Consolidated Schedule of Investments shares in Thousands, $ in Thousands |
12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|
|
Dec. 31, 2024
USD ($)
shares
|
Dec. 31, 2023
USD ($)
shares
|
Dec. 31, 2024
CAD ($)
shares
|
Dec. 31, 2023
CAD ($)
shares
|
Jun. 30, 2023
USD ($)
|
Mar. 31, 2023
USD ($)
|
Dec. 31, 2022
USD ($)
|
|
| Schedule of Investments [Line Items] | |||||||
| Investments, amortized cost | $ 695,240,000 | $ 740,021,000 | |||||
| Investments, fair value | $ 642,213,000 | $ 696,168,000 | |||||
| Percent of net assets | 224.40% | 219.70% | 224.40% | 219.70% | |||
| Total investments and money market funds amortized cost | $ 708,489,000 | ||||||
| Total investments and money market funds fair value | $ 655,462,000 | ||||||
| Total investments and money market funds percentage | 229.00% | 229.00% | |||||
| Qualifying assets required of acquiree at time of acquisition of total assets | 70.00% | 70.00% | |||||
| Qualifying assets of acquired of total assets | 80.70% | 83.30% | |||||
| Investments of net assets | 224.40% | 219.70% | |||||
| Investment Of total assets | 94.90% | 95.30% | |||||
| Unrealized appreciation | $ 20,000 | ||||||
| Unrealized depreciation | $ (43,000) | ||||||
| Investment, Identifier [Axis]: AB Centers Acquisition Corporation, First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:AbCentersAcquisitionCorporationMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Health Care Facilities | Health Care Facilities | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 0.75% | 0.75% | |||||
| Spread Above Index | 5.25% | 5.25% | |||||
| Interest Rate | 9.78% | 9.78% | |||||
| Acquisition Date | Sep. 19, 2024 | ||||||
| Maturity Date | Jul. 02, 2031 | Jul. 02, 2031 | |||||
| Principal/Share Amount | $ 78,000 | ||||||
| Investments, amortized cost | 78,000 | ||||||
| Investments, fair value | $ 80,000 | ||||||
| Investment, Identifier [Axis]: AB Centers Acquisition Corporation, First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:AbCentersAcquisitionCorporationMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Health Care Facilities | Health Care Facilities | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 0.75% | 0.75% | |||||
| Spread Above Index | 5.25% | 5.25% | |||||
| Interest Rate | 9.78% | 9.78% | |||||
| Acquisition Date | Sep. 19, 2024 | ||||||
| Maturity Date | Jul. 02, 2031 | Jul. 02, 2031 | |||||
| Investments, fair value | $ 5,000 | ||||||
| Investment, Identifier [Axis]: AB Centers Acquisition Corporation, First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:AbCentersAcquisitionCorporationMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Health Care Facilities | Health Care Facilities | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 0.75% | 0.75% | |||||
| Spread Above Index | 5.25% | 5.25% | |||||
| Interest Rate | 9.79% | 9.79% | |||||
| Acquisition Date | Sep. 19, 2024 | ||||||
| Maturity Date | Jul. 02, 2031 | Jul. 02, 2031 | |||||
| Principal/Share Amount | $ 7,962,000 | ||||||
| Investments, amortized cost | 7,866,000 | ||||||
| Investments, fair value | $ 7,919,000 | ||||||
| Investment, Identifier [Axis]: ABB/Con-cise Optical Group LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ABBCon-ciseOpticalGroupLLCMember | whfcl:ABBCon-ciseOpticalGroupLLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Health Care Supplies | Health Care Supplies | Health Care Supplies | Health Care Supplies | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 0.75% | 0.75% | 0.75% | 0.75% | |||
| Spread Above Index | 7.50% | 7.50% | 7.50% | 7.50% | |||
| Interest Rate | 11.98% | 13.01% | 11.98% | 13.01% | |||
| Acquisition Date | Feb. 23, 2022 | Feb. 23, 2022 | |||||
| Maturity Date | Feb. 23, 2028 | Feb. 23, 2028 | Feb. 23, 2028 | Feb. 23, 2028 | |||
| Principal/Share Amount | $ 20,409,000 | $ 20,409,000 | |||||
| Investments, amortized cost | 20,142,000 | 20,056,000 | |||||
| Investments, fair value | $ 19,535,000 | $ 18,983,000 | |||||
| Percent of net assets | 6.80% | 6.00% | 6.80% | 6.00% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: ALM Media, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ALMMediaLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Data Processing & Outsourced Services | Data Processing & Outsourced Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.00% | 6.00% | |||||
| Interest Rate | 11.50% | 11.50% | |||||
| Acquisition Date | Nov. 25, 2019 | ||||||
| Maturity Date | Nov. 25, 2024 | Nov. 25, 2024 | |||||
| Principal/Share Amount | $ 12,600,000 | ||||||
| Investments, amortized cost | 12,555,000 | ||||||
| Investments, fair value | $ 12,517,000 | ||||||
| Percent of net assets | 4.00% | 4.00% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: APG Lions Purchaser, LLC, First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ApgLionsPurchaserLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Distributors | Distributors | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.75% | 5.75% | |||||
| Interest Rate | 10.40% | 10.40% | |||||
| Acquisition Date | Apr. 26, 2024 | ||||||
| Maturity Date | Apr. 16, 2030 | Apr. 16, 2030 | |||||
| Investments, fair value | $ 15,000 | ||||||
| Investment, Identifier [Axis]: APG Lions Purchaser, LLC, First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ApgLionsPurchaserLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Distributors | Distributors | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.75% | 5.75% | |||||
| Interest Rate | 10.40% | 10.40% | |||||
| Acquisition Date | Apr. 26, 2024 | ||||||
| Maturity Date | Apr. 16, 2030 | Apr. 16, 2030 | |||||
| Investments, fair value | $ 6,000 | ||||||
| Investment, Identifier [Axis]: APG Lions Purchaser, LLC, First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ApgLionsPurchaserLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Distributors | Distributors | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.75% | 5.75% | |||||
| Interest Rate | 10.40% | 10.40% | |||||
| Acquisition Date | Apr. 26, 2024 | ||||||
| Maturity Date | Apr. 16, 2030 | Apr. 16, 2030 | |||||
| Principal/Share Amount | $ 4,080,000 | ||||||
| Investments, amortized cost | 4,027,000 | ||||||
| Investments, fair value | $ 4,070,000 | ||||||
| Investment, Identifier [Axis]: ATSG, First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ATSGIncMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 12.04% | 12.04% | |||||
| Acquisition Date | Mar. 27, 2023 | ||||||
| Maturity Date | Nov. 12, 2026 | Nov. 12, 2026 | |||||
| Principal/Share Amount | $ 9,873,000 | ||||||
| Investments, amortized cost | 9,678,000 | ||||||
| Investments, fair value | $ 9,771,000 | ||||||
| Investment, Identifier [Axis]: ATSG, Inc. First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ATSGIncMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 12.04% | 12.04% | |||||
| Acquisition Date | Nov. 12, 2021 | ||||||
| Maturity Date | Nov. 12, 2026 | Nov. 12, 2026 | |||||
| Principal/Share Amount | $ 3,785,000 | ||||||
| Investments, amortized cost | 3,741,000 | ||||||
| Investments, fair value | $ 3,745,000 | ||||||
| Percent of net assets | 1.20% | 1.20% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Alvaria Holdco (Cayman) (d/b/a Aspect Software, Inc.) First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:AlvariaHoldcoMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Application Software | Application Software | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 0.75% | 0.75% | |||||
| Spread Above Index | 7.50% | 7.50% | |||||
| Interest Rate | 11.96% | 11.96% | |||||
| Cash interest rate | 5.46% | 5.46% | |||||
| PIK interest rate | 6.50% | 6.50% | |||||
| Acquisition Date | Mar. 20, 2024 | ||||||
| Maturity Date | May 08, 2028 | May 08, 2028 | |||||
| Principal/Share Amount | $ 1,782,000 | ||||||
| Investments, amortized cost | 1,615,000 | ||||||
| Investments, fair value | $ 1,456,000 | ||||||
| Percent of net assets | 0.50% | 0.50% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Alvaria Holdco (Cayman) (d/b/a Aspect Software, Inc.) First Lien Secured Term Loan Four | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:AlvariaHoldcoMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:SecondLienSecuredTermLoanMember | whfcl:SecondLienSecuredTermLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Application Software | Application Software | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 0.75% | 0.75% | |||||
| Spread Above Index | 7.00% | 7.00% | |||||
| Interest Rate | 11.46% | 11.46% | |||||
| Acquisition Date | Mar. 20, 2024 | ||||||
| Maturity Date | May 08, 2028 | May 08, 2028 | |||||
| Principal/Share Amount | $ 2,400,000 | ||||||
| Investments, amortized cost | 2,330,000 | ||||||
| Investments, fair value | $ 74,000 | ||||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Alvaria Holdco (Cayman) (d/b/a Aspect Software, Inc.) First Lien Secured Term Loan Three | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:AlvariaHoldcoMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Application Software | Application Software | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 0.75% | 0.75% | |||||
| Spread Above Index | 7.00% | 7.00% | |||||
| Interest Rate | 11.46% | 11.46% | |||||
| Acquisition Date | Mar. 20, 2024 | ||||||
| Maturity Date | May 08, 2028 | May 08, 2028 | |||||
| Principal/Share Amount | $ 9,600,000 | ||||||
| Investments, amortized cost | 9,318,000 | ||||||
| Investments, fair value | $ 3,990,000 | ||||||
| Percent of net assets | 1.40% | 1.40% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Alvaria Holdco (Cayman) (d/b/a Aspect Software, Inc.) First Lien Secured Term Loan Two | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:AlvariaHoldcoMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Application Software | Application Software | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 0.75% | 0.75% | |||||
| Spread Above Index | 7.50% | 7.50% | |||||
| Interest Rate | 11.96% | 11.96% | |||||
| Cash interest rate | 6.46% | 6.46% | |||||
| PIK interest rate | 5.50% | 5.50% | |||||
| Acquisition Date | Mar. 20, 2024 | ||||||
| Maturity Date | May 08, 2028 | May 08, 2028 | |||||
| Principal/Share Amount | $ 1,178,000 | ||||||
| Investments, amortized cost | 1,029,000 | ||||||
| Investments, fair value | $ 451,000 | ||||||
| Percent of net assets | 0.20% | 0.20% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: American Crafts Holdings, LLC, Warrants | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Controlled affiliate company investments | Controlled affiliate company investments | Controlled affiliate company investments | Controlled affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:AmericanCraftsHoldingsLlcMember | whfcl:AmericanCraftsHoldingsLlcMember | |||||
| Investment, Type [Extensible Enumeration] | Warrant [Member] | Warrant [Member] | Warrant [Member] | Warrant [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Products | Leisure Products | Leisure Products | Leisure Products | |||
| Acquisition Date | Dec. 22, 2022 | Dec. 22, 2022 | |||||
| Maturity Date | Dec. 22, 2032 | Dec. 22, 2032 | Dec. 22, 2032 | Dec. 22, 2032 | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: American Crafts LC Super Priority First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Controlled affiliate company investments | Controlled affiliate company investments | Controlled affiliate company investments | Controlled affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:AmericanCraftsLCMember | whfcl:AmericanCraftsLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:SuperPriorityFirstLienSecuredTermLoanMember | whfcl:SuperPriorityFirstLienSecuredTermLoanMember | whfcl:SuperPriorityFirstLienSecuredTermLoanMember | whfcl:SuperPriorityFirstLienSecuredTermLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Products | Leisure Products | Leisure Products | Leisure Products | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 8.50% | 8.50% | 8.50% | 8.50% | |||
| PIK interest rate | 12.96% | 13.96% | 12.96% | 13.96% | |||
| Acquisition Date | Jul. 25, 2023 | Jul. 25, 2023 | |||||
| Maturity Date | May 28, 2026 | May 28, 2026 | May 28, 2026 | May 28, 2026 | |||
| Principal/Share Amount | $ 2,191,000 | $ 1,903,000 | |||||
| Investments, amortized cost | $ 2,094,000 | 1,903,000 | |||||
| Investments, fair value | $ 1,878,000 | ||||||
| Percent of net assets | 0.60% | 0.60% | |||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: American Crafts Lc Super Priority First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:AmericanCraftsLCMember | whfcl:AmericanCraftsLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:SuperPriorityFirstLienSecuredTermLoanMember | whfcl:SuperPriorityFirstLienSecuredTermLoanMember | whfcl:SuperPriorityFirstLienSecuredTermLoanMember | whfcl:SuperPriorityFirstLienSecuredTermLoanMember | |||
| Investments, fair value | $ 1,878,000 | ||||||
| Investment, Identifier [Axis]: American Crafts, LC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Controlled affiliate company investments | Controlled affiliate company investments | Controlled affiliate company investments | Controlled affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:AmericanCraftsLCMember | whfcl:AmericanCraftsLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Products | Leisure Products | Leisure Products | Leisure Products | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 8.50% | 8.50% | 8.50% | 8.50% | |||
| PIK interest rate | 12.96% | 13.96% | 12.96% | 13.96% | |||
| Acquisition Date | Jan. 25, 2022 | Jan. 25, 2022 | |||||
| Maturity Date | May 28, 2026 | May 28, 2026 | May 28, 2026 | May 28, 2026 | |||
| Principal/Share Amount | $ 1,823,000 | $ 1,585,000 | |||||
| Investments, amortized cost | $ 1,458,000 | 1,458,000 | |||||
| Investments, fair value | $ 93,000 | ||||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: American Crafts, LC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Controlled affiliate company investments | Controlled affiliate company investments | Controlled affiliate company investments | Controlled affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:AmericanCraftsLCMember | whfcl:AmericanCraftsLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Products | Leisure Products | Leisure Products | Leisure Products | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 8.50% | 8.50% | 8.50% | 8.50% | |||
| PIK interest rate | 12.96% | 13.96% | 12.96% | 13.96% | |||
| Acquisition Date | May 28, 2021 | May 28, 2021 | |||||
| Maturity Date | May 28, 2026 | May 28, 2026 | May 28, 2026 | May 28, 2026 | |||
| Principal/Share Amount | $ 10,859,000 | $ 9,441,000 | |||||
| Investments, amortized cost | $ 8,720,000 | 8,720,000 | |||||
| Investments, fair value | $ 553,000 | ||||||
| Percent of net assets | 0.20% | 0.20% | |||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: American Crafts, LC Priority First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Controlled affiliate company investments | Controlled affiliate company investments | Controlled affiliate company investments | Controlled affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:AmericanCraftsLCMember | whfcl:AmericanCraftsLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:PriorityFirstLienSecuredTermLoanMember | whfcl:PriorityFirstLienSecuredTermLoanMember | whfcl:PriorityFirstLienSecuredTermLoanMember | whfcl:PriorityFirstLienSecuredTermLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Products | Leisure Products | Leisure Products | Leisure Products | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 8.50% | 8.50% | 8.50% | 8.50% | |||
| PIK interest rate | 12.96% | 13.96% | 12.96% | 13.96% | |||
| Acquisition Date | Dec. 22, 2022 | Dec. 22, 2022 | |||||
| Maturity Date | May 28, 2026 | May 28, 2026 | May 28, 2026 | May 28, 2026 | |||
| Principal/Share Amount | $ 5,876,000 | $ 5,105,000 | |||||
| Investments, amortized cost | $ 5,105,000 | 5,105,000 | |||||
| Investments, fair value | $ 3,226,000 | ||||||
| Percent of net assets | 1.00% | 1.00% | |||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: American Crafts, LC Super Senior Priority First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Controlled affiliate company investments | Controlled affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:AmericanCraftsLCMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:SuperSeniorPriorityFirstLienSecuredTermLoanMember | whfcl:SuperSeniorPriorityFirstLienSecuredTermLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Products | Leisure Products | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 8.50% | 8.50% | |||||
| Acquisition Date | May 02, 2024 | ||||||
| Maturity Date | May 28, 2026 | May 28, 2026 | |||||
| Principal/Share Amount | $ 2,485,000 | ||||||
| Investments, amortized cost | 2,374,000 | ||||||
| Investments, fair value | $ 373,000 | ||||||
| Percent of net assets | 0.10% | 0.10% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: American Crafts, LC Super Senior Priority First Lien Secured Term Loan One | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Controlled affiliate company investments | Controlled affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:AmericanCraftsLCMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:SuperSeniorPriorityFirstLienSecuredTermLoanMember | whfcl:SuperSeniorPriorityFirstLienSecuredTermLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Products | Leisure Products | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 8.50% | 8.50% | |||||
| PIK interest rate | 12.96% | 12.96% | |||||
| Acquisition Date | Jan. 31, 2024 | ||||||
| Maturity Date | May 28, 2026 | May 28, 2026 | |||||
| Principal/Share Amount | $ 1,287,000 | ||||||
| Investments, amortized cost | $ 1,230,000 | ||||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: American Crafts, LC Super Senior Priority First Lien Secured Term Loan one | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:AmericanCraftsLCMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:SuperSeniorPriorityFirstLienSecuredTermLoanMember | whfcl:SuperSeniorPriorityFirstLienSecuredTermLoanMember | |||||
| Investment, Identifier [Axis]: Arcole Holding Corporation | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ArcoleHoldingCorporationMember | ||||||
| Investment, Identifier [Axis]: Arcole Holding Corporation, Equity | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Type [Extensible Enumeration] | Equity Investments | Equity Investments | |||||
| Investments, fair value | $ 6,380,000 | ||||||
| Investment, Identifier [Axis]: Arcserve Cayman GP LLC (d/b/a Arcserve (USA), LLC) Common Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled affiliate company investments | Non-controlled affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ArcserveCaymanGpLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:CommonUnitsMember | whfcl:CommonUnitsMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Systems Software | Systems Software | |||||
| Acquisition Date | Jan. 03, 2024 | ||||||
| Investment owned shares | shares | 663 | 663 | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Arcserve Cayman GP LLC (d/b/a Arcserve (USA), LLC) Common Units One | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ArcserveCaymanGpLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:CommonUnitsMember | whfcl:CommonUnitsMember | |||||
| Investment, Identifier [Axis]: Arcserve Cayman Opco LP (d/b/a Arcserve (USA), LLC) First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled affiliate company investments | Non-controlled affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ArcserveCaymanOpcoLpMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Systems Software | Systems Software | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 8.00% | 8.00% | |||||
| PIK interest rate | 12.67% | 12.67% | |||||
| Acquisition Date | Jan. 03, 2024 | ||||||
| Maturity Date | Jan. 04, 2027 | Jan. 04, 2027 | |||||
| Principal/Share Amount | $ 689,000 | ||||||
| Investments, amortized cost | 677,000 | ||||||
| Investments, fair value | $ 1,247,000 | ||||||
| Percent of net assets | 0.40% | 0.40% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Arcserve Cayman Opco LP (d/b/a Arcserve (USA), LLC) Unsecured Loan One | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled affiliate company investments | Non-controlled affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ArcserveCaymanOpcoLpMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:UnsecuredLoanMember | whfcl:UnsecuredLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Systems Software | Systems Software | |||||
| Interest Rate | 9.00% | 9.00% | |||||
| PIK interest rate | 9.00% | 9.00% | |||||
| Acquisition Date | Jan. 03, 2024 | ||||||
| Maturity Date | Jul. 02, 2029 | Jul. 02, 2029 | |||||
| Principal/Share Amount | $ 581,000 | ||||||
| Investments, amortized cost | 569,000 | ||||||
| Investments, fair value | $ 581,000 | ||||||
| Percent of net assets | 0.20% | 0.20% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Arcserve Cayman Opco LP (d/b/a Arcserve (USA), LLC) Unsecured Loan Two | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled affiliate company investments | Non-controlled affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ArcserveCaymanOpcoLpMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:UnsecuredLoanMember | whfcl:UnsecuredLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Systems Software | Systems Software | |||||
| Interest Rate | 9.00% | 9.00% | |||||
| Acquisition Date | Jan. 03, 2024 | ||||||
| Maturity Date | Jul. 02, 2029 | Jul. 02, 2029 | |||||
| Principal/Share Amount | $ 594,000 | ||||||
| Investments, amortized cost | 583,000 | ||||||
| Investments, fair value | $ 594,000 | ||||||
| Percent of net assets | 0.20% | 0.20% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Arcserve Cayman Topco LP (d/b/a Arcserve (USA), LLC) Common Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled affiliate company investments | Non-controlled affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ArcserveCaymanTopcoLpMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:CommonUnitsMember | whfcl:CommonUnitsMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Systems Software | Systems Software | |||||
| Acquisition Date | Jan. 03, 2024 | ||||||
| Investment owned shares | shares | 663 | 663 | |||||
| Investments, amortized cost | $ 19,568,000 | ||||||
| Investments, fair value | $ 9,131,000 | ||||||
| Percent of net assets | 3.20% | 3.20% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Arcserve Cayman Topco LP (d/b/a Arcserve (USA), LLC) Common Units Two | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ArcserveCaymanTopcoLpMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:CommonUnitsMember | whfcl:CommonUnitsMember | |||||
| Investments, fair value | $ 9,131,000 | ||||||
| Investment, Identifier [Axis]: Arcstor Midco, LLC (d/b/a Arcserve (USA), LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ArcstorMidcoLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Systems Software | Systems Software | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 7.75% | 7.75% | |||||
| PIK interest rate | 13.21% | 13.21% | |||||
| Acquisition Date | Mar. 16, 2021 | ||||||
| Maturity Date | Mar. 16, 2027 | Mar. 16, 2027 | |||||
| Principal/Share Amount | $ 21,613,000 | ||||||
| Investments, amortized cost | 19,568,000 | ||||||
| Investments, fair value | $ 10,477,000 | ||||||
| Percent of net assets | 3.30% | 3.30% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Arcstor Midco, LLC (d/b/a Arcserve (USA), LLC Priority First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ArcstorMidcoLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:PriorityFirstLienSecuredDelayedDrawLoanMember | whfcl:PriorityFirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Systems Software | Systems Software | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Spread Above Index | 8.00% | 8.00% | |||||
| PIK interest rate | 13.46% | 13.46% | |||||
| Acquisition Date | Jul. 14, 2023 | ||||||
| Maturity Date | Mar. 16, 2027 | Mar. 16, 2027 | |||||
| Principal/Share Amount | $ 1,078,000 | ||||||
| Investments, amortized cost | 1,050,000 | ||||||
| Investments, fair value | $ 1,046,000 | ||||||
| Percent of net assets | 0.30% | 0.30% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Arteriocyte Medical Systems, Inc. First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ArteriocyteMedicalSystemsInc.Member | whfcl:ArteriocyteMedicalSystemsInc.Member | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Health Care Supplies | Health Care Supplies | Health Care Supplies | Health Care Supplies | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 5.00% | 6.25% | 5.00% | 6.25% | |||
| Interest Rate | 9.33% | 11.60% | 9.33% | 11.60% | |||
| Acquisition Date | Oct. 25, 2023 | Oct. 25, 2023 | |||||
| Maturity Date | Oct. 18, 2028 | Oct. 18, 2028 | Oct. 18, 2028 | Oct. 18, 2028 | |||
| Investments, fair value | $ 9,000 | ||||||
| Investment, Identifier [Axis]: Arteriocyte Medical Systems, Inc. First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ArteriocyteMedicalSystemsInc.Member | whfcl:ArteriocyteMedicalSystemsInc.Member | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Health Care Supplies | Health Care Supplies | Health Care Supplies | Health Care Supplies | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 5.00% | 6.25% | 5.00% | 6.25% | |||
| Interest Rate | 9.33% | 11.60% | 9.33% | 11.60% | |||
| Acquisition Date | Oct. 25, 2023 | Oct. 25, 2023 | |||||
| Maturity Date | Oct. 18, 2028 | Oct. 18, 2028 | Oct. 18, 2028 | Oct. 18, 2028 | |||
| Principal/Share Amount | $ 4,972,000 | $ 5,022,000 | |||||
| Investments, amortized cost | 4,877,000 | 4,901,000 | |||||
| Investments, fair value | $ 5,021,000 | $ 4,901,000 | |||||
| Investment, Identifier [Axis]: Atlas Purchaser, Inc First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:AtlasPurchaserIncMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Application Software | Application Software | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 0.75% | 0.75% | |||||
| Spread Above Index | 5.25% | 5.25% | |||||
| Interest Rate | 10.88% | 10.88% | |||||
| Acquisition Date | Aug. 29, 2022 | ||||||
| Maturity Date | May 08, 2028 | May 08, 2028 | |||||
| Principal/Share Amount | $ 3,066,000 | ||||||
| Investments, amortized cost | 2,675,000 | ||||||
| Investments, fair value | $ 2,269,000 | ||||||
| Percent of net assets | 0.70% | 0.70% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Atlas Purchaser, Inc Second Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:AtlasPurchaserIncMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:SecondLienSecuredTermLoanMember | whfcl:SecondLienSecuredTermLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Application Software | Application Software | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 0.75% | 0.75% | |||||
| Spread Above Index | 9.00% | 9.00% | |||||
| Interest Rate | 14.64% | 14.64% | |||||
| Acquisition Date | May 03, 2021 | ||||||
| Maturity Date | May 07, 2029 | May 07, 2029 | |||||
| Principal/Share Amount | $ 15,000,000 | ||||||
| Investments, amortized cost | 14,699,000 | ||||||
| Investments, fair value | $ 9,744,000 | ||||||
| Percent of net assets | 3.10% | 3.10% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Avision Holdings, LLC (d/b/a Avision Sales Group) First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Avision Holdings, LLC [Member] | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Advertising | Advertising | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.00% | 6.00% | |||||
| Interest Rate | 10.48% | 10.48% | |||||
| Acquisition Date | May 31, 2024 | ||||||
| Maturity Date | Dec. 15, 2026 | Dec. 15, 2026 | |||||
| Principal/Share Amount | $ 553,000 | ||||||
| Investments, amortized cost | 545,000 | ||||||
| Investments, fair value | $ 558,000 | ||||||
| Percent of net assets | 0.20% | 0.20% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Avision Holdings, LLC (d/b/a Avision Sales Group) First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Avision Holdings, LLC [Member] | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Advertising | Advertising | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.00% | 6.00% | |||||
| Interest Rate | 10.48% | 10.48% | |||||
| Acquisition Date | May 31, 2024 | ||||||
| Maturity Date | Dec. 15, 2026 | Dec. 15, 2026 | |||||
| Principal/Share Amount | $ 658,000 | ||||||
| Investments, amortized cost | 648,000 | ||||||
| Investments, fair value | $ 652,000 | ||||||
| Percent of net assets | 0.20% | 0.20% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Avision Holdings, LLC Class A LLC Interests | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | Avision Holdings, LLC [Member] | Avision Holdings, LLC [Member] | |||||
| Investment, Type [Extensible Enumeration] | whfcl:ClassALLCInterestsMember | whfcl:ClassALLCInterestsMember | whfcl:ClassALLCInterestsMember | whfcl:ClassALLCInterestsMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Advertising | Advertising | Advertising | Advertising | |||
| Acquisition Date | Dec. 15, 2021 | Dec. 15, 2021 | |||||
| Investment owned shares | shares | 200 | 200 | 200 | 200 | |||
| Investments, amortized cost | $ 287,000 | $ 287,000 | |||||
| Investments, fair value | $ 577,000 | $ 411,000 | |||||
| Percent of net assets | 0.20% | 0.10% | 0.20% | 0.10% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: BBQ Buyer, LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:BBQBuyerLLCMember | whfcl:BBQBuyerLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Household Appliances | Household Appliances | Household Appliances | Household Appliances | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.50% | 1.50% | 1.50% | 1.50% | |||
| Spread Above Index | 10.50% | 9.50% | 10.50% | 9.50% | |||
| Interest Rate | 14.96% | 14.96% | 14.96% | 14.96% | |||
| Cash interest rate | 12.96% | 13.96% | 12.96% | 13.96% | |||
| PIK interest rate | 2.00% | 1.00% | 2.00% | 1.00% | |||
| Acquisition Date | Dec. 02, 2021 | Dec. 02, 2021 | |||||
| Maturity Date | Aug. 28, 2025 | Aug. 28, 2025 | Aug. 28, 2025 | Aug. 28, 2025 | |||
| Principal/Share Amount | $ 2,654,000 | $ 2,628,000 | |||||
| Investments, amortized cost | 2,645,000 | 2,606,000 | |||||
| Investments, fair value | $ 2,642,000 | $ 2,613,000 | |||||
| Percent of net assets | 0.90% | 0.80% | 0.90% | 0.80% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: BBQ Buyer, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:BBQBuyerLLCMember | whfcl:BBQBuyerLLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Household Appliances | Household Appliances | Household Appliances | Household Appliances | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.50% | 1.50% | 1.50% | 1.50% | |||
| Spread Above Index | 10.50% | 9.50% | 10.50% | 9.50% | |||
| Interest Rate | 14.96% | 14.96% | 14.96% | 14.96% | |||
| Cash interest rate | 12.96% | 13.96% | 12.96% | 13.96% | |||
| PIK interest rate | 2.00% | 1.00% | 2.00% | 1.00% | |||
| Acquisition Date | Aug. 28, 2020 | Aug. 28, 2020 | |||||
| Maturity Date | Aug. 28, 2025 | Aug. 28, 2025 | Aug. 28, 2025 | Aug. 28, 2025 | |||
| Principal/Share Amount | $ 13,013,000 | $ 12,891,000 | |||||
| Investments, amortized cost | 12,972,000 | 12,787,000 | |||||
| Investments, fair value | $ 12,955,000 | $ 12,818,000 | |||||
| Percent of net assets | 4.50% | 4.10% | 4.50% | 4.10% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: BBQ Buyer, LLC Shares | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:BBQBuyerLLCMember | whfcl:BBQBuyerLLCMember | |||||
| Investment, Type [Extensible Enumeration] | Common Stock [Member] | Common Stock [Member] | Common Stock [Member] | Common Stock [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Household Appliances | Household Appliances | Household Appliances | Household Appliances | |||
| Acquisition Date | Aug. 28, 2020 | Aug. 28, 2020 | |||||
| Investment owned shares | shares | 1,100 | 1,100 | 1,100 | 1,100 | |||
| Investments, amortized cost | $ 1,100,000 | $ 1,100,000 | |||||
| Investments, fair value | $ 907,000 | $ 1,330,000 | |||||
| Percent of net assets | 0.30% | 0.40% | 0.30% | 0.40% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: BL Products Parent, LP Class A Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:BLProductsParentLPMember | whfcl:BLProductsParentLPMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:ClassAUnitsMember | whfcl:ClassAUnitsMember | whfcl:ClassAUnitsMember | whfcl:ClassAUnitsMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Industrial Machinery & Supplies & Components | Industrial Machinery & Supplies & Components | Industrial Machinery & Supplies & Components | Industrial Machinery & Supplies & Components | |||
| Acquisition Date | Feb. 01, 2022 | Feb. 01, 2022 | |||||
| Investment owned shares | shares | 733 | 733 | 733 | 733 | |||
| Investments, amortized cost | $ 788,000 | $ 788,000 | |||||
| Investments, fair value | $ 1,012,000 | $ 1,053,000 | |||||
| Percent of net assets | 0.40% | 0.30% | 0.40% | 0.30% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: BPII-JL Group Holdings LP Class A Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:BPII-JLGroupHoldingsLPMember | whfcl:BPII-JLGroupHoldingsLPMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:ClassAUnitsMember | whfcl:ClassAUnitsMember | whfcl:ClassAUnitsMember | whfcl:ClassAUnitsMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Environmental & Facilities Services | Environmental & Facilities Services | Environmental & Facilities Services | Environmental & Facilities Services | |||
| Acquisition Date | Dec. 29, 2021 | Dec. 29, 2021 | |||||
| Investment owned shares | shares | 90 | 83 | 90 | 83 | |||
| Investments, amortized cost | $ 942,000 | $ 825,000 | |||||
| Investments, fair value | $ 1,400,000 | $ 983,000 | |||||
| Percent of net assets | 0.50% | 0.30% | 0.50% | 0.30% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: BUSA Acquisition Co. (d/b/a BankCard USA Merchant Services Inc.) First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Busa Acquisition Co BankCard Usa Merchant Services Inc [Member] | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Data Processing & Outsourced Services | Data Processing & Outsourced Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 10.81% | 10.81% | |||||
| Acquisition Date | Apr. 04, 2024 | ||||||
| Maturity Date | Mar. 30, 2029 | Mar. 30, 2029 | |||||
| Principal/Share Amount | $ 459,000 | ||||||
| Investments, amortized cost | 447,000 | ||||||
| Investments, fair value | $ 461,000 | ||||||
| Percent of net assets | 0.20% | 0.20% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: BUSA Acquisition Co. (d/b/a BankCard USA Merchant Services Inc.) First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Busa Acquisition Co BankCard Usa Merchant Services Inc [Member] | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Data Processing & Outsourced Services | Data Processing & Outsourced Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 10.77% | 10.77% | |||||
| Acquisition Date | Apr. 04, 2024 | ||||||
| Maturity Date | Mar. 30, 2029 | Mar. 30, 2029 | |||||
| Principal/Share Amount | $ 7,779,000 | ||||||
| Investments, amortized cost | 7,580,000 | ||||||
| Investments, fair value | $ 7,691,000 | ||||||
| Percent of net assets | 2.70% | 2.70% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Banner Acquisition Holdings, LLC (d/b/a Banner Industries, Inc) First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:BannerIndustriesIncMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Construction & Engineering | Construction & Engineering | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.00% | 6.00% | |||||
| Interest Rate | 11.38% | 11.38% | |||||
| Acquisition Date | Dec. 01, 2023 | ||||||
| Maturity Date | Jan. 02, 2029 | Jan. 02, 2029 | |||||
| Principal/Share Amount | $ 140,000 | ||||||
| Investments, amortized cost | 137,000 | ||||||
| Investments, fair value | $ 137,000 | ||||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Banner Acquisition Holdings, LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | Banner Acquisition Holdings, LLC [Member] | Banner Acquisition Holdings, LLC [Member] | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Construction & Engineering | Construction & Engineering | Construction & Engineering | Construction & Engineering | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.25% | 6.00% | 6.25% | 6.00% | |||
| Interest Rate | 10.59% | 11.38% | 10.59% | 11.38% | |||
| Acquisition Date | Dec. 21, 2023 | Dec. 21, 2023 | |||||
| Maturity Date | Jan. 02, 2029 | Jan. 02, 2029 | Jan. 02, 2029 | Jan. 02, 2029 | |||
| Principal/Share Amount | $ 1,502,000 | $ 1,400,000 | |||||
| Investments, amortized cost | 1,472,000 | 1,366,000 | |||||
| Investments, fair value | $ 1,477,000 | $ 1,365,000 | |||||
| Investment, Identifier [Axis]: Banner Acquisition Holdings, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | Banner Acquisition Holdings, LLC [Member] | Banner Acquisition Holdings, LLC [Member] | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Construction & Engineering | Construction & Engineering | Construction & Engineering | Construction & Engineering | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.25% | 6.00% | 6.25% | 6.00% | |||
| Interest Rate | 10.61% | 11.37% | 10.61% | 11.37% | |||
| Acquisition Date | Dec. 21, 2023 | Dec. 21, 2023 | |||||
| Maturity Date | Jan. 02, 2029 | Jan. 02, 2029 | Jan. 02, 2029 | Jan. 02, 2029 | |||
| Principal/Share Amount | $ 420,000 | $ 196,000 | |||||
| Investments, amortized cost | 412,000 | 191,000 | |||||
| Investments, fair value | $ 415,000 | $ 191,000 | |||||
| Investment, Identifier [Axis]: Banner Acquisition Holdings, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | Banner Acquisition Holdings, LLC [Member] | Banner Acquisition Holdings, LLC [Member] | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Construction & Engineering | Construction & Engineering | Construction & Engineering | Construction & Engineering | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.25% | 6.00% | 6.25% | 6.00% | |||
| Interest Rate | 10.61% | 11.38% | 10.61% | 11.38% | |||
| Acquisition Date | Dec. 21, 2023 | Dec. 21, 2023 | |||||
| Maturity Date | Jan. 02, 2029 | Jan. 02, 2029 | Jan. 02, 2029 | Jan. 02, 2029 | |||
| Principal/Share Amount | $ 3,033,000 | $ 3,091,000 | |||||
| Investments, amortized cost | 2,974,000 | 3,015,000 | |||||
| Investments, fair value | $ 2,981,000 | $ 3,015,000 | |||||
| Investment, Identifier [Axis]: Barrett Purchaser LLC (d/b/a SIB Development and Consulting, Inc.) First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Barrett Purchaser LLC [Member] | Barrett Purchaser LLC [Member] | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Research & Consulting Services | Research & Consulting Services | Research & Consulting Services | Research & Consulting Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | whfcl:SecuredOvernightFinancingRateSofrMember | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 0.75% | 0.75% | 0.75% | 0.75% | |||
| Spread Above Index | 6.00% | 6.00% | 6.00% | 6.00% | |||
| Interest Rate | 10.51% | 11.36% | 10.51% | 11.36% | |||
| Acquisition Date | Jan. 10, 2024 | Nov. 21, 2023 | |||||
| Maturity Date | Nov. 21, 2029 | Nov. 21, 2029 | Nov. 21, 2029 | Nov. 21, 2029 | |||
| Investments, fair value | $ (2,000) | ||||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Barrett Purchaser LLC (d/b/a SIB Development and Consulting, Inc.) First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Barrett Purchaser LLC [Member] | Barrett Purchaser LLC [Member] | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Research & Consulting Services | Research & Consulting Services | Research & Consulting Services | Research & Consulting Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | us-gaap:PrimeRateMember | whfcl:SecuredOvernightFinancingRateSofrMember | us-gaap:PrimeRateMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 0.75% | 0.75% | 0.75% | 0.75% | |||
| Spread Above Index | 5.00% | 6.00% | 5.00% | 6.00% | |||
| Interest Rate | 12.50% | 11.36% | 12.50% | 11.36% | |||
| Acquisition Date | Jan. 10, 2024 | Nov. 21, 2023 | |||||
| Maturity Date | Nov. 21, 2028 | Nov. 21, 2028 | Nov. 21, 2028 | Nov. 21, 2028 | |||
| Principal/Share Amount | $ 60,000 | ||||||
| Investments, amortized cost | 58,000 | ||||||
| Investments, fair value | $ 63,000 | ||||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Barrett Purchaser LLC (d/b/a SIB Development and Consulting, Inc.) First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Barrett Purchaser LLC [Member] | Barrett Purchaser LLC [Member] | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Research & Consulting Services | Research & Consulting Services | Research & Consulting Services | Research & Consulting Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | whfcl:SecuredOvernightFinancingRateSofrMember | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 0.75% | 0.75% | 0.75% | 0.75% | |||
| Spread Above Index | 6.00% | 6.00% | 6.00% | 6.00% | |||
| Interest Rate | 10.51% | 11.36% | 10.51% | 11.36% | |||
| Acquisition Date | Jan. 10, 2024 | Nov. 21, 2023 | |||||
| Maturity Date | Nov. 21, 2029 | Nov. 21, 2029 | Nov. 21, 2029 | Nov. 21, 2029 | |||
| Principal/Share Amount | $ 3,617,000 | $ 3,654,000 | |||||
| Investments, amortized cost | 3,543,000 | 3,564,000 | |||||
| Investments, fair value | $ 3,574,000 | $ 3,564,000 | |||||
| Percent of net assets | 1.10% | 1.10% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Basel U.S. Acquisition Co., Inc. First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:BaselU.s.AcquisitionCo.Inc.Member | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Aerospace Sector [Member] | Aerospace Sector [Member] | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.50% | 5.50% | |||||
| Interest Rate | 9.94% | 9.94% | |||||
| Acquisition Date | Sep. 13, 2024 | ||||||
| Maturity Date | Dec. 05, 2028 | Dec. 05, 2028 | |||||
| Investments, fair value | $ 7,000 | ||||||
| Investment, Identifier [Axis]: Basel U.S. Acquisition Co., Inc. First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:BaselU.s.AcquisitionCo.Inc.Member | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Aerospace Sector [Member] | Aerospace Sector [Member] | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.50% | 5.50% | |||||
| Interest Rate | 9.94% | 9.94% | |||||
| Acquisition Date | Sep. 13, 2024 | ||||||
| Maturity Date | Dec. 05, 2028 | Dec. 05, 2028 | |||||
| Principal/Share Amount | $ 3,681,000 | ||||||
| Investments, amortized cost | 3,633,000 | ||||||
| Investments, fair value | $ 3,675,000 | ||||||
| Investment, Identifier [Axis]: Branford Filtration, LLC (d/b/a Clean Solutions Group) First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Branford Filtration, LLC [Member] | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Environmental & Facilities Services | Environmental & Facilities Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 11.96% | 11.96% | |||||
| Acquisition Date | Nov. 17, 2023 | ||||||
| Maturity Date | Nov. 17, 2028 | Nov. 17, 2028 | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Branford Filtration, LLC (d/b/a Clean Solutions Group) First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Branford Filtration, LLC [Member] | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Environmental & Facilities Services | Environmental & Facilities Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 11.96% | 11.96% | |||||
| Acquisition Date | Nov. 17, 2023 | ||||||
| Maturity Date | Nov. 17, 2028 | Nov. 17, 2028 | |||||
| Principal/Share Amount | $ 11,613,000 | ||||||
| Investments, amortized cost | 11,358,000 | ||||||
| Investments, fair value | $ 11,358,000 | ||||||
| Percent of net assets | 3.60% | 3.60% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Bridgepoint Healthcare, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:BridgepointHealthcareLLCMember | whfcl:BridgepointHealthcareLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Health Care Facilities | Health Care Facilities | Health Care Facilities | Health Care Facilities | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 8.00% | 8.00% | 8.00% | 8.00% | |||
| Interest Rate | 12.46% | 13.46% | 12.46% | 13.46% | |||
| Acquisition Date | Oct. 05, 2021 | Oct. 05, 2021 | |||||
| Maturity Date | Oct. 05, 2026 | Oct. 05, 2026 | Oct. 05, 2026 | Oct. 05, 2026 | |||
| Principal/Share Amount | $ 238,000 | ||||||
| Investments, amortized cost | 237,000 | ||||||
| Investments, fair value | $ 231,000 | $ (1,000) | |||||
| Percent of net assets | 0.10% | 0.10% | |||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Bridgepoint Healthcare, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:BridgepointHealthcareLLCMember | whfcl:BridgepointHealthcareLLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Health Care Facilities | Health Care Facilities | Health Care Facilities | Health Care Facilities | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 8.00% | 8.00% | 8.00% | 8.00% | |||
| Interest Rate | 12.46% | 13.46% | 12.46% | 13.46% | |||
| Acquisition Date | Oct. 05, 2021 | Oct. 05, 2021 | |||||
| Maturity Date | Oct. 05, 2026 | Oct. 05, 2026 | Oct. 05, 2026 | Oct. 05, 2026 | |||
| Principal/Share Amount | $ 8,517,000 | $ 9,073,000 | |||||
| Investments, amortized cost | 8,457,000 | 8,973,000 | |||||
| Investments, fair value | $ 8,429,000 | $ 8,967,000 | |||||
| Percent of net assets | 2.90% | 2.80% | 2.90% | 2.80% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Buckeye Acquiror LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:BuckeyeAcquirorLlcMember | whfcl:BuckeyeAcquirorLlcMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Environmental & Facilities Services | Environmental & Facilities Services | Environmental & Facilities Services | Environmental & Facilities Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 5.00% | 6.50% | 5.00% | 6.50% | |||
| Interest Rate | 8.45% | 11.96% | 8.45% | 11.96% | |||
| Acquisition Date | Aug. 09, 2023 | Aug. 09, 2023 | |||||
| Maturity Date | Aug. 01, 2029 | Aug. 01, 2029 | Aug. 01, 2029 | Aug. 01, 2029 | |||
| Principal/Share Amount | $ 2,168,000 | ||||||
| Investments, amortized cost | 2,120,000 | ||||||
| Investments, fair value | $ 2,183,000 | $ (3,000) | |||||
| Investment, Identifier [Axis]: Buckeye Acquiror LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:BuckeyeAcquirorLlcMember | whfcl:BuckeyeAcquirorLlcMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Environmental & Facilities Services | Environmental & Facilities Services | Environmental & Facilities Services | Environmental & Facilities Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.50% | 6.50% | 6.50% | 6.50% | |||
| Interest Rate | 10.96% | 11.96% | 10.96% | 11.96% | |||
| Acquisition Date | Aug. 09, 2023 | Aug. 09, 2023 | |||||
| Maturity Date | Aug. 01, 2029 | Aug. 01, 2029 | Aug. 01, 2029 | Aug. 01, 2029 | |||
| Principal/Share Amount | $ 234,000 | $ 180,000 | |||||
| Investments, amortized cost | 230,000 | 176,000 | |||||
| Investments, fair value | $ 248,000 | $ 181,000 | |||||
| Investment, Identifier [Axis]: Buckeye Acquiror LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:BuckeyeAcquirorLlcMember | whfcl:BuckeyeAcquirorLlcMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Environmental & Facilities Services | Environmental & Facilities Services | Environmental & Facilities Services | Environmental & Facilities Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.42% | 6.50% | 6.42% | 6.50% | |||
| Interest Rate | 10.88% | 11.96% | 10.88% | 11.96% | |||
| Acquisition Date | Aug. 09, 2023 | Aug. 09, 2023 | |||||
| Maturity Date | Aug. 01, 2029 | Aug. 01, 2029 | Aug. 01, 2029 | Aug. 01, 2029 | |||
| Principal/Share Amount | $ 6,904,000 | $ 5,985,000 | |||||
| Investments, amortized cost | 6,774,000 | 5,845,000 | |||||
| Investments, fair value | $ 6,952,000 | $ 5,898,000 | |||||
| Investment, Identifier [Axis]: Bulk Midco, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:BulkMidcoLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Wireless Telecommunication Services | Wireless Telecommunication Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 7.50% | 7.50% | |||||
| Interest Rate | 12.96% | 12.96% | |||||
| Cash interest rate | 11.96% | 11.96% | |||||
| PIK interest rate | 1.00% | 1.00% | |||||
| Acquisition Date | Oct. 28, 2022 | ||||||
| Maturity Date | Jun. 10, 2024 | Jun. 10, 2024 | |||||
| Principal/Share Amount | $ 2,000,000 | ||||||
| Investments, amortized cost | 1,989,000 | ||||||
| Investments, fair value | $ 1,972,000 | ||||||
| Percent of net assets | 0.60% | 0.60% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Bulk Midco, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:BulkMidcoLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Wireless Telecommunication Services | Wireless Telecommunication Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 7.50% | 7.50% | |||||
| Interest Rate | 12.96% | 12.96% | |||||
| Cash interest rate | 11.96% | 11.96% | |||||
| PIK interest rate | 1.00% | 1.00% | |||||
| Acquisition Date | Oct. 28, 2022 | ||||||
| Maturity Date | Jun. 10, 2024 | Jun. 10, 2024 | |||||
| Principal/Share Amount | $ 19,267,000 | ||||||
| Investments, amortized cost | 19,237,000 | ||||||
| Investments, fair value | $ 18,997,000 | ||||||
| Percent of net assets | 6.00% | 6.00% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: CX Holdco LLC Common Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:CXHoldcoLLCMember | whfcl:CXHoldcoLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:CommonUnitsMember | whfcl:CommonUnitsMember | whfcl:CommonUnitsMember | whfcl:CommonUnitsMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | |||
| Acquisition Date | May 04, 2021 | May 04, 2021 | |||||
| Investment owned shares | shares | 1,068 | 1,068 | 1,068 | 1,068 | |||
| Investments, amortized cost | $ 1,116,000 | $ 1,116,000 | |||||
| Investments, fair value | $ 2,232,000 | $ 1,715,000 | |||||
| Percent of net assets | 0.80% | 0.50% | 0.80% | 0.50% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Camarillo Fitness Holdings, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled affiliate company investments | Non-controlled affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:CamarilloFitnessHoldingsLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Facilities | Leisure Facilities | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 8.50% | 8.50% | |||||
| PIK interest rate | 12.98% | 12.98% | |||||
| Acquisition Date | Sep. 25, 2024 | ||||||
| Maturity Date | Sep. 25, 2029 | Sep. 25, 2029 | |||||
| Principal/Share Amount | $ 11,738,000 | ||||||
| Investments, amortized cost | 10,269,000 | ||||||
| Investments, fair value | $ 10,492,000 | ||||||
| Percent of net assets | 3.70% | 3.70% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Camp Facility Services Holdings, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:CampFacilityServicesHoldingsLLCMember | whfcl:CampFacilityServicesHoldingsLLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Real Estate Services [Member] | Real Estate Services [Member] | Real Estate Services [Member] | Real Estate Services [Member] | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.50% | 6.50% | 6.50% | 6.50% | |||
| Interest Rate | 10.96% | 11.96% | 10.96% | 11.96% | |||
| Acquisition Date | Nov. 16, 2021 | Nov. 16, 2021 | |||||
| Maturity Date | Nov. 16, 2027 | Nov. 16, 2027 | Nov. 16, 2027 | Nov. 16, 2027 | |||
| Principal/Share Amount | $ 10,424,000 | $ 11,668,000 | |||||
| Investments, amortized cost | 10,325,000 | 11,517,000 | |||||
| Investments, fair value | $ 9,905,000 | $ 11,496,000 | |||||
| Percent of net assets | 3.50% | 3.60% | 3.50% | 3.60% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Camp Facility Services Parent, LLC Preferred Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:CampFacilityServicesParentLLCMember | whfcl:CampFacilityServicesParentLLCMember | |||||
| Investment, Type [Extensible Enumeration] | Preferred Units [Member] | Preferred Units [Member] | Preferred Units [Member] | Preferred Units [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Real Estate Services [Member] | Real Estate Services [Member] | Real Estate Services [Member] | Real Estate Services [Member] | |||
| Interest Rate | 10.00% | 10.00% | 10.00% | 10.00% | |||
| PIK interest rate | 10.00% | 10.00% | 10.00% | 10.00% | |||
| Acquisition Date | Nov. 16, 2021 | Nov. 16, 2021 | |||||
| Investment owned shares | shares | 15 | 15 | 15 | 15 | |||
| Investments, amortized cost | $ 840,000 | $ 840,000 | |||||
| Investments, fair value | $ 162,000 | $ 1,023,000 | |||||
| Percent of net assets | 0.10% | 0.30% | 0.10% | 0.30% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | true | true | true | true | |||
| Investment, Identifier [Axis]: Cennox Holdings Limited, First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:CennoxHoldingsLimitedMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Sterling Overnight Index Average [Member] | Sterling Overnight Index Average [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.50% | 5.50% | |||||
| Interest Rate | 10.40% | 10.40% | |||||
| Acquisition Date | Sep. 11, 2024 | ||||||
| Maturity Date | May 04, 2029 | May 04, 2029 | |||||
| Investments, fair value | $ 2,000 | ||||||
| Investment, Identifier [Axis]: Cennox Holdings Limited, First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:CennoxHoldingsLimitedMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Sterling Overnight Index Average [Member] | Sterling Overnight Index Average [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.50% | 5.50% | |||||
| Interest Rate | 10.40% | 10.40% | |||||
| Acquisition Date | Sep. 11, 2024 | ||||||
| Maturity Date | May 04, 2029 | May 04, 2029 | |||||
| Principal/Share Amount | $ 513,000 | ||||||
| Investments, amortized cost | 665,000 | ||||||
| Investments, fair value | $ 643,000 | ||||||
| Investment, Identifier [Axis]: Cennox Holdings Limited, First lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:CennoxHoldingsLimitedMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Sterling Overnight Index Average [Member] | Sterling Overnight Index Average [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.25% | 6.25% | |||||
| Interest Rate | 11.56% | 11.56% | |||||
| Cash interest rate | 11.31% | 11.31% | |||||
| PIK interest rate | 0.25% | 0.25% | |||||
| Acquisition Date | Jul. 16, 2021 | ||||||
| Maturity Date | May 04, 2026 | May 04, 2026 | |||||
| Principal/Share Amount | $ 864,000 | ||||||
| Investments, amortized cost | 1,182,000 | ||||||
| Investments, fair value | $ 1,082,000 | ||||||
| Investment, Identifier [Axis]: Cennox Holdings Limited., First lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:CennoxHoldingsLimitedMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Sterling Overnight Index Average [Member] | Sterling Overnight Index Average [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.25% | 6.25% | |||||
| Acquisition Date | Jul. 16, 2021 | ||||||
| Maturity Date | May 04, 2026 | May 04, 2026 | |||||
| Principal/Share Amount | $ 2,825,000 | ||||||
| Investments, amortized cost | 3,863,000 | ||||||
| Investments, fair value | $ 3,538,000 | ||||||
| Investment, Identifier [Axis]: Cennox, Inc, First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:CennoxInc.Member | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.50% | 5.50% | |||||
| Interest Rate | 10.25% | 10.25% | |||||
| Acquisition Date | Sep. 11, 2024 | ||||||
| Maturity Date | May 04, 2029 | May 04, 2029 | |||||
| Principal/Share Amount | $ 29,000 | ||||||
| Investments, amortized cost | 29,000 | ||||||
| Investments, fair value | $ 30,000 | ||||||
| Investment, Identifier [Axis]: Cennox, Inc, First Lien Secured Term Loan One | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:CennoxInc.Member | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:EuroInterbankOfferedRateMember | whfcl:EuroInterbankOfferedRateMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.75% | 5.75% | |||||
| Interest Rate | 9.14% | 9.14% | |||||
| Acquisition Date | Sep. 11, 2024 | ||||||
| Maturity Date | May 04, 2029 | May 04, 2029 | |||||
| Principal/Share Amount | $ 594,000 | ||||||
| Investments, amortized cost | 649,000 | ||||||
| Investments, fair value | $ 611,000 | ||||||
| Investment, Identifier [Axis]: Cennox, Inc, First lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:CennoxInc.Member | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:EuroInterbankOfferedRateMember | whfcl:EuroInterbankOfferedRateMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 10.44% | 10.44% | |||||
| Cash interest rate | 10.19% | 10.19% | |||||
| PIK interest rate | 0.25% | 0.25% | |||||
| Acquisition Date | Jun. 28, 2022 | ||||||
| Maturity Date | May 04, 2026 | May 04, 2026 | |||||
| Principal/Share Amount | $ 9,422,000 | ||||||
| Investments, amortized cost | 9,851,000 | ||||||
| Investments, fair value | $ 10,257,000 | ||||||
| Investment, Identifier [Axis]: Cennox, Inc. First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:CennoxInc.Member | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.50% | 5.50% | |||||
| Interest Rate | 10.34% | 10.34% | |||||
| Acquisition Date | Sep. 11, 2024 | ||||||
| Maturity Date | May 04, 2029 | May 04, 2029 | |||||
| Principal/Share Amount | $ 3,350,000 | ||||||
| Investments, amortized cost | 3,319,000 | ||||||
| Investments, fair value | $ 3,344,000 | ||||||
| Investment, Identifier [Axis]: Chase Products Co. (f/k/a Starco) Second Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled affiliate company investments | Non-controlled affiliate company investments | Non-controlled affiliate company investments | Non-controlled affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ChaseProductsCoMember | whfcl:ChaseProductsCoMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:SecondLienSecuredTermLoanMember | whfcl:SecondLienSecuredTermLoanMember | whfcl:SecondLienSecuredTermLoanMember | whfcl:SecondLienSecuredTermLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Diversified Chemicals | Diversified Chemicals | Diversified Chemicals | Diversified Chemicals | |||
| Interest Rate | 12.00% | 12.00% | 12.00% | 12.00% | |||
| PIK interest rate | 12.00% | 12.00% | 12.00% | 12.00% | |||
| Acquisition Date | Mar. 16, 2023 | Mar. 16, 2023 | |||||
| Maturity Date | Mar. 16, 2028 | Mar. 16, 2028 | Mar. 16, 2028 | Mar. 16, 2028 | |||
| Principal/Share Amount | $ 3,342,000 | $ 2,962,000 | |||||
| Investments, amortized cost | 3,342,000 | 2,962,000 | |||||
| Investments, fair value | $ 3,342,000 | $ 2,793,000 | |||||
| Percent of net assets | 1.20% | 0.90% | 1.20% | 0.90% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Claridge Products and Equipment, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ClaridgeProductsandEquipmentLLCMember | whfcl:ClaridgeProductsandEquipmentLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Construction Materials | Construction Materials | Construction Materials | Construction Materials | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Base Rate [Member] | Base Rate [Member] | Base Rate [Member] | Base Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 8.31% | 7.56% | 8.31% | 7.56% | |||
| Interest Rate | 14.13% | 14.41% | 14.13% | 14.41% | |||
| Cash interest rate | 11.88% | 12.91% | 11.88% | 12.91% | |||
| PIK interest rate | 2.25% | 1.50% | 2.25% | 1.50% | |||
| Acquisition Date | Dec. 30, 2020 | Dec. 30, 2020 | |||||
| Maturity Date | Dec. 30, 2025 | Dec. 30, 2025 | Dec. 30, 2025 | Dec. 30, 2025 | |||
| Principal/Share Amount | $ 632,000 | $ 632,000 | |||||
| Investments, amortized cost | 630,000 | 628,000 | |||||
| Investments, fair value | $ 555,000 | $ 496,000 | |||||
| Percent of net assets | 0.20% | 0.20% | 0.20% | 0.20% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Claridge Products and Equipment, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ClaridgeProductsandEquipmentLLCMember | whfcl:ClaridgeProductsandEquipmentLLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Construction Materials | Construction Materials | Construction Materials | Construction Materials | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 8.75% | 8.00% | 8.75% | 8.00% | |||
| Interest Rate | 13.21% | 13.50% | 13.21% | 13.50% | |||
| Cash interest rate | 10.96% | 12.00% | 10.96% | 12.00% | |||
| PIK interest rate | 2.25% | 1.50% | 2.25% | 1.50% | |||
| Acquisition Date | Dec. 30, 2020 | Dec. 30, 2020 | |||||
| Maturity Date | Dec. 30, 2025 | Dec. 30, 2025 | Dec. 30, 2025 | Dec. 30, 2025 | |||
| Principal/Share Amount | $ 5,711,000 | $ 7,452,000 | |||||
| Investments, amortized cost | 5,690,000 | 7,395,000 | |||||
| Investments, fair value | $ 5,085,000 | $ 6,405,000 | |||||
| Percent of net assets | 1.80% | 2.00% | 1.80% | 2.00% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Clark Restaurant Service, LLC, First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ClarkRestaurantServiceLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Food Distributors | Food Distributors | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.75% | 5.75% | |||||
| Interest Rate | 10.11% | 10.11% | |||||
| Acquisition Date | Jun. 14, 2024 | ||||||
| Maturity Date | May 10, 2029 | May 10, 2029 | |||||
| Principal/Share Amount | $ 5,006,000 | ||||||
| Investments, amortized cost | 4,919,000 | ||||||
| Investments, fair value | $ 4,993,000 | ||||||
| Investment, Identifier [Axis]: CleanChoice Energy, Inc First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:CleanChoiceEnergyIncMember | whfcl:CleanChoiceEnergyIncMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Electric Utilities | Electric Utilities | Electric Utilities | Electric Utilities | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 7.59% | 7.58% | 7.59% | 7.58% | |||
| Interest Rate | 12.39% | 13.14% | 12.39% | 13.14% | |||
| Acquisition Date | Oct. 12, 2021 | Oct. 12, 2021 | |||||
| Maturity Date | Oct. 12, 2026 | Oct. 12, 2026 | Oct. 12, 2026 | Oct. 12, 2026 | |||
| Principal/Share Amount | $ 15,955,000 | $ 15,955,000 | |||||
| Investments, amortized cost | 15,802,000 | 15,715,000 | |||||
| Investments, fair value | $ 16,032,000 | $ 15,954,000 | |||||
| Percent of net assets | 5.60% | 5.00% | 5.60% | 5.00% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Coastal Television Broadcasting Group LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:CoastalTelevisionBroadcastingGroupLLCMember | whfcl:CoastalTelevisionBroadcastingGroupLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Broadcasting | Broadcasting | Broadcasting | Broadcasting | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.50% | 7.00% | 6.50% | 7.00% | |||
| Interest Rate | 10.96% | 12.46% | 10.96% | 12.46% | |||
| Acquisition Date | Dec. 30, 2021 | Dec. 30, 2021 | |||||
| Maturity Date | Dec. 30, 2026 | Dec. 30, 2026 | Dec. 30, 2026 | Dec. 30, 2026 | |||
| Investments, fair value | $ 1,000 | $ (3,000) | |||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Coastal Television Broadcasting Group LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:CoastalTelevisionBroadcastingGroupLLCMember | whfcl:CoastalTelevisionBroadcastingGroupLLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Broadcasting | Broadcasting | Broadcasting | Broadcasting | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.50% | 7.00% | 6.50% | 7.00% | |||
| Interest Rate | 10.96% | 12.46% | 10.96% | 12.46% | |||
| Acquisition Date | Dec. 30, 2021 | Dec. 30, 2021 | |||||
| Maturity Date | Dec. 30, 2026 | Dec. 30, 2026 | Dec. 30, 2026 | Dec. 30, 2026 | |||
| Principal/Share Amount | $ 7,879,000 | $ 7,418,000 | |||||
| Investments, amortized cost | 7,808,000 | 7,329,000 | |||||
| Investments, fair value | $ 7,832,000 | $ 7,246,000 | |||||
| Percent of net assets | 2.70% | 2.30% | 2.70% | 2.30% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Drew Foam Companies Inc First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:DrewFoamCompaniesIncMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Building Products | Building Products | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 7.25% | 7.25% | |||||
| Interest Rate | 12.75% | 12.75% | |||||
| Acquisition Date | Nov. 09, 2020 | ||||||
| Maturity Date | Nov. 05, 2025 | Nov. 05, 2025 | |||||
| Principal/Share Amount | $ 13,644,000 | ||||||
| Investments, amortized cost | 13,541,000 | ||||||
| Investments, fair value | $ 13,313,000 | ||||||
| Investment, Identifier [Axis]: Drew Foam Companies Inc, First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:DrewFoamCompaniesIncMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Building Products | Building Products | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.00% | 6.00% | |||||
| Interest Rate | 10.48% | 10.48% | |||||
| Acquisition Date | Nov. 09, 2020 | ||||||
| Maturity Date | Dec. 07, 2026 | Dec. 07, 2026 | |||||
| Principal/Share Amount | $ 13,501,000 | ||||||
| Investments, amortized cost | 13,445,000 | ||||||
| Investments, fair value | $ 13,437,000 | ||||||
| Investment, Identifier [Axis]: E-Phoenix Acquisition Co. Inc. First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:E-PhoenixAcquisitionCo.Inc.Member | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Research & Consulting Services | Research & Consulting Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.50% | 5.50% | |||||
| Interest Rate | 11.00% | 11.00% | |||||
| Acquisition Date | Jul. 15, 2021 | ||||||
| Maturity Date | Jun. 23, 2027 | Jun. 23, 2027 | |||||
| Principal/Share Amount | $ 8,604,000 | ||||||
| Investments, amortized cost | 8,541,000 | ||||||
| Investments, fair value | $ 8,562,000 | ||||||
| Investment, Identifier [Axis]: E-Phoenix Acquisition Co. Inc., First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:E-PhoenixAcquisitionCo.Inc.Member | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Research & Consulting Services | Research & Consulting Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.50% | 5.50% | |||||
| Interest Rate | 9.98% | 9.98% | |||||
| Acquisition Date | Jul. 15, 2021 | ||||||
| Maturity Date | Jun. 23, 2027 | Jun. 23, 2027 | |||||
| Principal/Share Amount | $ 8,342,000 | ||||||
| Investments, amortized cost | 8,299,000 | ||||||
| Investments, fair value | $ 8,342,000 | ||||||
| Investment, Identifier [Axis]: Eddy Acquisitions, LLC Preferred Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:EddyAcquisitionsLLCMember | whfcl:EddyAcquisitionsLLCMember | |||||
| Investment, Type [Extensible Enumeration] | Preferred Units [Member] | Preferred Units [Member] | Preferred Units [Member] | Preferred Units [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Education Services | Education Services | Education Services | Education Services | |||
| Interest Rate | 12.00% | 12.00% | 12.00% | 12.00% | |||
| Acquisition Date | Sep. 15, 2021 | Sep. 15, 2021 | |||||
| Investment owned shares | shares | 167 | 167 | 167 | 167 | |||
| Investments, amortized cost | $ 167,000 | $ 167,000 | |||||
| Investments, fair value | $ 18,000 | ||||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | true | false | true | false | |||
| Investment, Identifier [Axis]: Education Dynamics, LLC Senior Preferred Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:EducationDynamicsLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:SeniorPreferredUnitsMember | whfcl:SeniorPreferredUnitsMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Education Services | Education Services | |||||
| Acquisition Date | Sep. 15, 2021 | ||||||
| Investment owned shares | shares | 167 | 167 | |||||
| Investments, amortized cost | $ 167,000 | ||||||
| Investments, fair value | $ 100,000 | ||||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: EducationDynamics, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:EducationDynamicsLLCMember | whfcl:EducationDynamicsLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Education Services | Education Services | Education Services | Education Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.50% | 7.00% | 6.50% | 7.00% | |||
| Interest Rate | 10.96% | 12.46% | 10.96% | 12.46% | |||
| Cash interest rate | 11.96% | 11.96% | |||||
| PIK interest rate | 0.50% | 0.50% | |||||
| Acquisition Date | Sep. 15, 2021 | Sep. 15, 2021 | |||||
| Maturity Date | Sep. 15, 2027 | Sep. 15, 2026 | Sep. 15, 2027 | Sep. 15, 2026 | |||
| Investments, fair value | $ (51,000) | $ (22,000) | |||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: EducationDynamics, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:EducationDynamicsLLCMember | whfcl:EducationDynamicsLLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Education Services | Education Services | Education Services | Education Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.50% | 7.00% | 6.50% | 7.00% | |||
| Interest Rate | 10.96% | 12.46% | 10.96% | 12.46% | |||
| Cash interest rate | 11.96% | 11.96% | |||||
| PIK interest rate | 0.50% | 0.50% | |||||
| Acquisition Date | Sep. 15, 2021 | Sep. 15, 2021 | |||||
| Maturity Date | Sep. 15, 2027 | Sep. 15, 2026 | Sep. 15, 2027 | Sep. 15, 2026 | |||
| Principal/Share Amount | $ 13,089,000 | $ 12,784,000 | |||||
| Investments, amortized cost | 12,989,000 | 12,647,000 | |||||
| Investments, fair value | $ 12,449,000 | $ 12,407,000 | |||||
| Percent of net assets | 4.30% | 4.00% | 4.30% | 4.00% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: EducationDynamics, LLC Subordinated Unsecured Term Loa | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:EducationDynamicsLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:SubordinatedUnsecuredTermLoanMember | whfcl:SubordinatedUnsecuredTermLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Education Services | Education Services | |||||
| Interest Rate | 4.00% | 4.00% | |||||
| Acquisition Date | Sep. 15, 2021 | ||||||
| Maturity Date | Mar. 15, 2027 | Mar. 15, 2027 | |||||
| Principal/Share Amount | $ 167,000 | ||||||
| Investments, amortized cost | 167,000 | ||||||
| Investments, fair value | $ 167,000 | ||||||
| Percent of net assets | 0.10% | 0.10% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Empire Office, Inc First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:EmpireOfficeIncMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Office Services & Supplies | Office Services & Supplies | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.50% | 1.50% | |||||
| Spread Above Index | 6.75% | 6.75% | |||||
| Interest Rate | 12.21% | 12.21% | |||||
| Acquisition Date | Aug. 17, 2021 | ||||||
| Maturity Date | Apr. 12, 2024 | Apr. 12, 2024 | |||||
| Principal/Share Amount | $ 4,556,000 | ||||||
| Investments, amortized cost | 4,545,000 | ||||||
| Investments, fair value | $ 4,556,000 | ||||||
| Percent of net assets | 1.40% | 1.40% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Empire Office, Inc First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:EmpireOfficeIncMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Office Services & Supplies | Office Services & Supplies | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.50% | 1.50% | |||||
| Spread Above Index | 6.75% | 6.75% | |||||
| Interest Rate | 12.21% | 12.21% | |||||
| Acquisition Date | Apr. 12, 2019 | ||||||
| Maturity Date | Apr. 12, 2024 | Apr. 12, 2024 | |||||
| Principal/Share Amount | $ 10,947,000 | ||||||
| Investments, amortized cost | 10,931,000 | ||||||
| Investments, fair value | $ 10,947,000 | ||||||
| Percent of net assets | 3.50% | 3.50% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Event Services America, Inc. (d/b/a Contemporary Services Corporation) First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:EventServicesAmericaIncMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Security & Alarm Services | Security & Alarm Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.75% | 6.75% | |||||
| Interest Rate | 11.11% | 11.11% | |||||
| Acquisition Date | Jan. 31, 2024 | ||||||
| Maturity Date | Jan. 31, 2029 | Jan. 31, 2029 | |||||
| Principal/Share Amount | $ 7,000,000 | ||||||
| Investments, amortized cost | 6,857,000 | ||||||
| Investments, fair value | $ 7,070,000 | ||||||
| Percent of net assets | 2.50% | 2.50% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: FGI Acquisition Corp. (d/b/a Flexitallic Group SAS) First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:FgiAcquisitionCorpMember | whfcl:FgiAcquisitionCorpMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Commodity Chemicals | Commodity Chemicals | Commodity Chemicals | Commodity Chemicals | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.50% | 6.50% | 6.50% | 6.50% | |||
| Interest Rate | 10.98% | 12.00% | 10.98% | 12.00% | |||
| Acquisition Date | Oct. 28, 2019 | Oct. 28, 2019 | |||||
| Maturity Date | Oct. 29, 2026 | Oct. 29, 2026 | Oct. 29, 2026 | Oct. 29, 2026 | |||
| Principal/Share Amount | $ 16,026,000 | $ 16,193,000 | |||||
| Investments, amortized cost | 15,765,000 | 15,786,000 | |||||
| Investments, fair value | $ 16,026,000 | $ 16,110,000 | |||||
| Percent of net assets | 5.60% | 5.10% | 5.60% | 5.10% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: FloWorks International LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:FloworksInternationalLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Distributors | Distributors | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 0.75% | 0.75% | |||||
| Spread Above Index | 5.75% | 5.75% | |||||
| Interest Rate | 10.40% | 10.40% | |||||
| Acquisition Date | Dec. 12, 2024 | ||||||
| Maturity Date | Nov. 26, 2031 | Nov. 26, 2031 | |||||
| Investment, Identifier [Axis]: FloWorks International LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:FloworksInternationalLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Distributors | Distributors | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 0.75% | 0.75% | |||||
| Spread Above Index | 4.75% | 4.75% | |||||
| Interest Rate | 9.27% | 9.27% | |||||
| Acquisition Date | Dec. 12, 2024 | ||||||
| Maturity Date | Nov. 26, 2031 | Nov. 26, 2031 | |||||
| Principal/Share Amount | $ 5,333,000 | ||||||
| Investments, amortized cost | 5,280,000 | ||||||
| Investments, fair value | $ 5,281,000 | ||||||
| Investment, Identifier [Axis]: Foodservices Brand Group, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:FoodservicesBrandGroupLlcMember | whfcl:FoodservicesBrandGroupLlcMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Distributors | Distributors | Distributors | Distributors | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 8.00% | 8.00% | 8.00% | 8.00% | |||
| Interest Rate | 12.62% | 13.52% | 12.62% | 13.52% | |||
| Acquisition Date | Nov. 22, 2022 | Nov. 22, 2022 | |||||
| Maturity Date | Dec. 09, 2025 | Dec. 09, 2025 | Dec. 09, 2025 | Dec. 09, 2025 | |||
| Principal/Share Amount | $ 357,000 | $ 357,000 | |||||
| Investments, amortized cost | 357,000 | 357,000 | |||||
| Investments, fair value | $ 321,000 | $ 200,000 | |||||
| Percent of net assets | 0.10% | 0.10% | 0.10% | 0.10% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Foodservices Brand Group, LLC Second Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:FoodservicesBrandGroupLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:SecondLienSecuredTermLoanMember | whfcl:SecondLienSecuredTermLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Distributors | Distributors | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.50% | 1.50% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 11.96% | 11.96% | |||||
| Acquisition Date | Nov. 22, 2022 | ||||||
| Maturity Date | Jan. 08, 2026 | Jan. 08, 2026 | |||||
| Principal/Share Amount | $ 5,171,000 | ||||||
| Investments, amortized cost | 4,915,000 | ||||||
| Investments, fair value | $ 1,601,000 | ||||||
| Percent of net assets | 0.50% | 0.50% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Forward Solutions, LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ForwardSolutionsLlcMember | whfcl:ForwardSolutionsLlcMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Advertising | Advertising | Advertising | Advertising | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.75% | 6.75% | 6.75% | 6.75% | |||
| Interest Rate | 11.23% | 12.25% | 11.23% | 12.25% | |||
| Acquisition Date | Mar. 11, 2022 | Mar. 11, 2022 | |||||
| Maturity Date | Dec. 15, 2026 | Dec. 15, 2026 | Dec. 15, 2026 | Dec. 15, 2026 | |||
| Principal/Share Amount | $ 3,023,000 | $ 3,054,000 | |||||
| Investments, amortized cost | 3,000,000 | 3,018,000 | |||||
| Investments, fair value | $ 3,023,000 | $ 3,025,000 | |||||
| Investment, Identifier [Axis]: Forward Solutions, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ForwardSolutionsLlcMember | whfcl:ForwardSolutionsLlcMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Advertising | Advertising | Advertising | Advertising | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.75% | 6.75% | 6.75% | 6.75% | |||
| Interest Rate | 11.23% | 12.25% | 11.23% | 12.25% | |||
| Acquisition Date | Feb. 18, 2022 | Feb. 18, 2022 | |||||
| Maturity Date | Dec. 15, 2026 | Dec. 15, 2026 | Dec. 15, 2026 | Dec. 15, 2026 | |||
| Investments, fair value | $ 5,000 | $ 1,000 | |||||
| Investment, Identifier [Axis]: Forward Solutions, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ForwardSolutionsLlcMember | whfcl:ForwardSolutionsLlcMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Advertising | Advertising | Advertising | Advertising | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.75% | 6.75% | 6.75% | 6.75% | |||
| Interest Rate | 11.23% | 12.25% | 11.23% | 12.25% | |||
| Acquisition Date | Feb. 18, 2022 | Feb. 18, 2022 | |||||
| Maturity Date | Dec. 15, 2026 | Dec. 15, 2026 | Dec. 15, 2026 | Dec. 15, 2026 | |||
| Principal/Share Amount | $ 9,007,000 | $ 9,100,000 | |||||
| Investments, amortized cost | 8,937,000 | 8,991,000 | |||||
| Investments, fair value | $ 9,007,000 | $ 9,014,000 | |||||
| Investment, Identifier [Axis]: Future Payment Technologies, LP First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:FuturePaymentTechnologiesLPMember | whfcl:FuturePaymentTechnologiesLPMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Data Processing & Outsourced Services | Data Processing & Outsourced Services | Data Processing & Outsourced Services | Data Processing & Outsourced Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 8.25% | 8.25% | 8.25% | 8.25% | |||
| Interest Rate | 12.90% | 13.69% | 12.90% | 13.69% | |||
| Acquisition Date | Dec. 23, 2016 | Dec. 23, 2016 | |||||
| Maturity Date | Dec. 05, 2025 | Dec. 05, 2025 | Dec. 05, 2025 | Dec. 05, 2025 | |||
| Principal/Share Amount | $ 20,420,000 | $ 21,665,000 | |||||
| Investments, amortized cost | 20,382,000 | 21,582,000 | |||||
| Investments, fair value | $ 20,420,000 | $ 21,480,000 | |||||
| Percent of net assets | 7.10% | 6.80% | 7.10% | 6.80% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Geo Logic Systems Ltd First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:GeoLogicSystemsLtdMember | whfcl:GeoLogicSystemsLtdMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Data Processing & Outsourced Services | Data Processing & Outsourced Services | Data Processing & Outsourced Services | Data Processing & Outsourced Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:CanadianOvernightRepoRateAverageMember | whfcl:CanadianDollarOfferedRateMember | whfcl:CanadianOvernightRepoRateAverageMember | whfcl:CanadianDollarOfferedRateMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.00% | 6.50% | 6.00% | 6.50% | |||
| Interest Rate | 9.49% | 11.94% | 9.49% | 11.94% | |||
| Acquisition Date | Jan. 22, 2020 | Jan. 22, 2020 | |||||
| Maturity Date | Dec. 21, 2026 | Dec. 19, 2024 | Dec. 21, 2026 | Dec. 19, 2024 | |||
| Investments, fair value | $ 2,000 | $ 5,000 | |||||
| Investment, Identifier [Axis]: Geo Logic Systems Ltd First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:GeoLogicSystemsLtdMember | whfcl:GeoLogicSystemsLtdMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Data Processing & Outsourced Services | Data Processing & Outsourced Services | Data Processing & Outsourced Services | Data Processing & Outsourced Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:CanadianOvernightRepoRateAverageMember | whfcl:CanadianDollarOfferedRateMember | whfcl:CanadianOvernightRepoRateAverageMember | whfcl:CanadianDollarOfferedRateMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.00% | 6.50% | 6.00% | 6.50% | |||
| Interest Rate | 9.49% | 11.94% | 9.49% | 11.94% | |||
| Acquisition Date | Jan. 22, 2020 | Jan. 22, 2020 | |||||
| Maturity Date | Dec. 21, 2026 | Dec. 19, 2024 | Dec. 21, 2026 | Dec. 19, 2024 | |||
| Principal/Share Amount | $ 18,415,000 | $ 19,416,000 | |||||
| Investments, amortized cost | 14,234,000 | 14,969,000 | |||||
| Investments, fair value | $ 12,883,000 | $ 14,654,000 | |||||
| Investment, Identifier [Axis]: Gulf Winds International Acquisition, LLC (d/b/a Gulf Winds International, Inc.) First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:GulfWindsInternationalAcquisitionLlcMember | whfcl:GulfWindsInternationalAcquisitionLlcMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Air Freight & Logistics | Air Freight & Logistics | Air Freight & Logistics | Air Freight & Logistics | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 7.50% | 7.00% | 7.50% | 7.00% | |||
| Interest Rate | 11.95% | 12.46% | 11.95% | 12.46% | |||
| Acquisition Date | Dec. 16, 2022 | Dec. 16, 2022 | |||||
| Maturity Date | Dec. 18, 2028 | Dec. 18, 2028 | Dec. 18, 2028 | Dec. 18, 2028 | |||
| Principal/Share Amount | $ 453,000 | ||||||
| Investments, amortized cost | 444,000 | ||||||
| Investments, fair value | $ 447,000 | $ 7,000 | |||||
| Percent of net assets | 0.20% | 0.20% | |||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Gulf Winds International Acquisition, LLC (d/b/a Gulf Winds International, Inc.) First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:GulfWindsInternationalAcquisitionLlcMember | whfcl:GulfWindsInternationalAcquisitionLlcMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Air Freight & Logistics | Air Freight & Logistics | Air Freight & Logistics | Air Freight & Logistics | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 7.60% | 7.00% | 7.60% | 7.00% | |||
| Interest Rate | 11.96% | 12.46% | 11.96% | 12.46% | |||
| Acquisition Date | Dec. 16, 2022 | Dec. 16, 2022 | |||||
| Maturity Date | Dec. 18, 2028 | Dec. 18, 2028 | Dec. 18, 2028 | Dec. 18, 2028 | |||
| Principal/Share Amount | $ 8,994,000 | $ 4,804,000 | |||||
| Investments, amortized cost | 8,811,000 | 4,685,000 | |||||
| Investments, fair value | $ 8,857,000 | $ 4,738,000 | |||||
| Percent of net assets | 3.10% | 1.50% | 3.10% | 1.50% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: H I G Camarillo, LP, Limited Partners Interests | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled affiliate company investments | Non-controlled affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:HIGCamarilloLpMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:LimitedPartnerInterestsMember | whfcl:LimitedPartnerInterestsMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Facilities | Leisure Facilities | |||||
| Acquisition Date | Sep. 25, 2024 | ||||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: HC Salon Holdings, Inc First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:HCSalonHoldingsIncMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Research & Consulting Services | Research & Consulting Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 12.11% | 12.11% | |||||
| Acquisition Date | Sep. 30, 2021 | ||||||
| Maturity Date | Sep. 30, 2026 | Sep. 30, 2026 | |||||
| Investments, fair value | $ 8,000 | ||||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: HC Salon Holdings, Inc First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:HCSalonHoldingsIncMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Research & Consulting Services | Research & Consulting Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 12.11% | 12.11% | |||||
| Acquisition Date | Sep. 30, 2021 | ||||||
| Maturity Date | Sep. 30, 2026 | Sep. 30, 2026 | |||||
| Principal/Share Amount | $ 11,404,000 | ||||||
| Investments, amortized cost | 11,279,000 | ||||||
| Investments, fair value | $ 11,404,000 | ||||||
| Percent of net assets | 3.60% | 3.60% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: HRG Management, LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:HRGManagementLLCMember | whfcl:HRGManagementLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Real Estate Services [Member] | Real Estate Services [Member] | Real Estate Services [Member] | Real Estate Services [Member] | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Base Rate [Member] | Base Rate [Member] | Base Rate [Member] | Base Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.97% | 6.22% | 6.97% | 6.22% | |||
| Interest Rate | 11.29% | 12.10% | 11.29% | 12.10% | |||
| Acquisition Date | Feb. 18, 2022 | Feb. 18, 2022 | |||||
| Maturity Date | Oct. 19, 2026 | Oct. 19, 2026 | Oct. 19, 2026 | Oct. 19, 2026 | |||
| Principal/Share Amount | $ 1,395,000 | $ 2,398,000 | |||||
| Investments, amortized cost | 1,384,000 | 2,369,000 | |||||
| Investments, fair value | $ 1,354,000 | $ 2,282,000 | |||||
| Investment, Identifier [Axis]: HRG Management, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:HRGManagementLLCMember | whfcl:HRGManagementLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Real Estate Services [Member] | Real Estate Services [Member] | Real Estate Services [Member] | Real Estate Services [Member] | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.25% | 6.25% | 6.25% | 6.25% | |||
| Interest Rate | 11.02% | 11.80% | 11.02% | 11.80% | |||
| Acquisition Date | Feb. 18, 2022 | Feb. 18, 2022 | |||||
| Maturity Date | Oct. 19, 2026 | Oct. 19, 2026 | Oct. 19, 2026 | Oct. 19, 2026 | |||
| Principal/Share Amount | $ 483,000 | $ 596,000 | |||||
| Investments, amortized cost | 480,000 | 589,000 | |||||
| Investments, fair value | $ 455,000 | $ 547,000 | |||||
| Investment, Identifier [Axis]: HRG Management, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:HRGManagementLLCMember | whfcl:HRGManagementLLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Real Estate Services [Member] | Real Estate Services [Member] | Real Estate Services [Member] | Real Estate Services [Member] | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.25% | 6.25% | 6.25% | 6.25% | |||
| Interest Rate | 11.02% | 11.80% | 11.02% | 11.80% | |||
| Acquisition Date | Dec. 28, 2021 | Dec. 28, 2021 | |||||
| Maturity Date | Oct. 19, 2026 | Oct. 19, 2026 | Oct. 19, 2026 | Oct. 19, 2026 | |||
| Principal/Share Amount | $ 5,563,000 | $ 9,555,000 | |||||
| Investments, amortized cost | 5,523,000 | 9,448,000 | |||||
| Investments, fair value | $ 5,395,000 | $ 9,074,000 | |||||
| Investment, Identifier [Axis]: Hollander Intermediate LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:HollanderIntermediateLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Home Furnishings | Home Furnishings | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 3.00% | 3.00% | |||||
| Spread Above Index | 10.75% | 10.75% | |||||
| Interest Rate | 16.22% | 16.22% | |||||
| Acquisition Date | Sep. 19, 2022 | ||||||
| Maturity Date | Sep. 21, 2026 | Sep. 21, 2026 | |||||
| Principal/Share Amount | $ 4,689,000 | ||||||
| Investments, amortized cost | 4,661,000 | ||||||
| Investments, fair value | $ 4,179,000 | ||||||
| Percent of net assets | 1.30% | 1.30% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Honors Holdings, LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Honors Holdings, LLC [Member] | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Facilities | Leisure Facilities | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.37% | 6.37% | |||||
| Interest Rate | 11.90% | 11.90% | |||||
| Acquisition Date | Sep. 06, 2019 | ||||||
| Maturity Date | Sep. 06, 2024 | Sep. 06, 2024 | |||||
| Principal/Share Amount | $ 4,650,000 | ||||||
| Investments, amortized cost | 4,631,000 | ||||||
| Investments, fair value | $ 4,603,000 | ||||||
| Percent of net assets | 1.50% | 1.50% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Honors Holdings, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Honors Holdings, LLC [Member] | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Facilities | Leisure Facilities | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.49% | 6.49% | |||||
| Interest Rate | 12.02% | 12.02% | |||||
| Acquisition Date | Sep. 06, 2019 | ||||||
| Maturity Date | Sep. 06, 2024 | Sep. 06, 2024 | |||||
| Principal/Share Amount | $ 9,441,000 | ||||||
| Investments, amortized cost | 9,375,000 | ||||||
| Investments, fair value | $ 9,347,000 | ||||||
| Percent of net assets | 3.00% | 3.00% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: ITS Buyer Inc. First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ITSBuyerIncMember | whfcl:ITSBuyerIncMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Air Freight & Logistics | Air Freight & Logistics | Air Freight & Logistics | Air Freight & Logistics | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 5.50% | 5.50% | 5.50% | 5.50% | |||
| Interest Rate | 10.35% | 11.11% | 10.35% | 11.11% | |||
| Acquisition Date | Feb. 17, 2022 | Feb. 17, 2022 | |||||
| Maturity Date | Jun. 15, 2026 | Jun. 15, 2026 | Jun. 15, 2026 | Jun. 15, 2026 | |||
| Investments, fair value | $ 4,000 | ||||||
| Investment, Identifier [Axis]: ITS Buyer Inc. First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ITSBuyerIncMember | whfcl:ITSBuyerIncMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Air Freight & Logistics | Air Freight & Logistics | Air Freight & Logistics | Air Freight & Logistics | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 5.50% | 5.50% | 5.50% | 5.50% | |||
| Interest Rate | 10.35% | 11.11% | 10.35% | 11.11% | |||
| Acquisition Date | Feb. 17, 2022 | Feb. 17, 2022 | |||||
| Maturity Date | Jun. 15, 2026 | Jun. 15, 2026 | Jun. 15, 2026 | Jun. 15, 2026 | |||
| Principal/Share Amount | $ 3,307,000 | $ 3,541,000 | |||||
| Investments, amortized cost | 3,286,000 | 3,503,000 | |||||
| Investments, fair value | $ 3,307,000 | $ 3,504,000 | |||||
| Investment, Identifier [Axis]: ImageOne Industries, LLC Common A Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ImageOneIndustriesLLCMember | whfcl:ImageOneIndustriesLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:CommonUnitsMember | whfcl:CommonAUnitsMember | whfcl:CommonUnitsMember | whfcl:CommonAUnitsMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Advertising | Advertising | Advertising | Advertising | |||
| Acquisition Date | Sep. 20, 2019 | Sep. 20, 2019 | |||||
| Investment owned shares | shares | 235 | 149 | 235 | 149 | |||
| Investments, amortized cost | $ 10,000 | $ 7,000 | |||||
| Investments, fair value | $ 12,000 | $ 9,000 | |||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Industrial Specialty Services USA LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:IndustrialSpecialtyServicesUSALLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Environmental & Facilities Services | Environmental & Facilities Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.75% | 6.75% | |||||
| Interest Rate | 12.25% | 12.25% | |||||
| Acquisition Date | Dec. 31, 2021 | ||||||
| Maturity Date | Dec. 31, 2026 | Dec. 31, 2026 | |||||
| Principal/Share Amount | $ 11,767,000 | ||||||
| Investments, amortized cost | 11,626,000 | ||||||
| Investments, fair value | $ 11,537,000 | ||||||
| Percent of net assets | 3.60% | 3.60% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: JVMC Holdings Corp First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:JVMCHoldingsCorpMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Investment Banking & Brokerage | Investment Banking & Brokerage | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 11.96% | 11.96% | |||||
| Acquisition Date | Feb. 28, 2019 | ||||||
| Maturity Date | Feb. 28, 2024 | Feb. 28, 2024 | |||||
| Principal/Share Amount | $ 3,522,000 | ||||||
| Investments, amortized cost | 3,521,000 | ||||||
| Investments, fair value | $ 3,522,000 | ||||||
| Percent of net assets | 1.10% | 1.10% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Juniper Landscaping Holdings LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:JuniperLandscapingHoldingsLLCMember | whfcl:JuniperLandscapingHoldingsLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Environmental & Facilities Services | Environmental & Facilities Services | Environmental & Facilities Services | Environmental & Facilities Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.25% | 6.25% | 6.25% | 6.25% | |||
| Interest Rate | 10.85% | 11.94% | 10.85% | 11.94% | |||
| Acquisition Date | Mar. 01, 2022 | Mar. 01, 2022 | |||||
| Maturity Date | Dec. 29, 2026 | Dec. 29, 2026 | Dec. 29, 2026 | Dec. 29, 2026 | |||
| Principal/Share Amount | $ 2,343,000 | $ 2,366,000 | |||||
| Investments, amortized cost | 2,326,000 | 2,341,000 | |||||
| Investments, fair value | $ 2,343,000 | $ 2,342,000 | |||||
| Investment, Identifier [Axis]: Juniper Landscaping Holdings LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:JuniperLandscapingHoldingsLLCMember | whfcl:JuniperLandscapingHoldingsLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Environmental & Facilities Services | Environmental & Facilities Services | Environmental & Facilities Services | Environmental & Facilities Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.25% | 6.25% | 6.25% | 6.25% | |||
| Interest Rate | 10.82% | 12.11% | 10.82% | 12.11% | |||
| Acquisition Date | Mar. 01, 2022 | Mar. 01, 2022 | |||||
| Maturity Date | Dec. 29, 2026 | Dec. 29, 2026 | Dec. 29, 2026 | Dec. 29, 2026 | |||
| Principal/Share Amount | $ 517,000 | $ 199,000 | |||||
| Investments, amortized cost | 513,000 | 197,000 | |||||
| Investments, fair value | $ 522,000 | $ 193,000 | |||||
| Investment, Identifier [Axis]: Juniper Landscaping Holdings LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:JuniperLandscapingHoldingsLLCMember | whfcl:JuniperLandscapingHoldingsLLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Environmental & Facilities Services | Environmental & Facilities Services | Environmental & Facilities Services | Environmental & Facilities Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.25% | 6.25% | 6.25% | 6.25% | |||
| Interest Rate | 10.84% | 11.86% | 10.84% | 11.86% | |||
| Acquisition Date | Mar. 01, 2022 | Mar. 01, 2022 | |||||
| Maturity Date | Dec. 29, 2026 | Dec. 29, 2026 | Dec. 29, 2026 | Dec. 29, 2026 | |||
| Principal/Share Amount | $ 11,078,000 | $ 11,192,000 | |||||
| Investments, amortized cost | 11,000,000 | 11,073,000 | |||||
| Investments, fair value | $ 11,078,000 | $ 11,080,000 | |||||
| Investment, Identifier [Axis]: KORE Wireless Group Inc. First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:KoreWirelessGroupIncMember | whfcl:KoreWirelessGroupIncMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Wireless Telecommunication Services | Wireless Telecommunication Services | Wireless Telecommunication Services | Wireless Telecommunication Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.50% | 6.50% | 6.50% | 6.50% | |||
| Interest Rate | 11.02% | 11.88% | 11.02% | 11.88% | |||
| Acquisition Date | Nov. 27, 2023 | Nov. 27, 2023 | |||||
| Maturity Date | Nov. 09, 2028 | Nov. 09, 2028 | Nov. 09, 2028 | Nov. 09, 2028 | |||
| Investments, fair value | $ 9,000 | ||||||
| Investment, Identifier [Axis]: KORE Wireless Group Inc. First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:KoreWirelessGroupIncMember | whfcl:KoreWirelessGroupIncMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Wireless Telecommunication Services | Wireless Telecommunication Services | Wireless Telecommunication Services | Wireless Telecommunication Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.50% | 6.50% | 6.50% | 6.50% | |||
| Interest Rate | 11.02% | 11.88% | 11.02% | 11.88% | |||
| Acquisition Date | Nov. 27, 2023 | Nov. 27, 2023 | |||||
| Maturity Date | Nov. 09, 2028 | Nov. 09, 2028 | Nov. 09, 2028 | Nov. 09, 2028 | |||
| Principal/Share Amount | $ 6,354,000 | $ 6,418,000 | |||||
| Investments, amortized cost | 6,256,000 | 6,294,000 | |||||
| Investments, fair value | $ 6,323,000 | $ 6,295,000 | |||||
| Investment, Identifier [Axis]: Kelso Industries LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Kelso Industries L L C [Member] | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Construction & Engineering | Construction & Engineering | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.75% | 5.75% | |||||
| Interest Rate | 10.09% | 10.09% | |||||
| Acquisition Date | Dec. 26, 2024 | ||||||
| Maturity Date | Dec. 31, 2029 | Dec. 31, 2029 | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Kelso Industries LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Kelso Industries L L C [Member] | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Construction & Engineering | Construction & Engineering | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.75% | 5.75% | |||||
| Interest Rate | 10.09% | 10.09% | |||||
| Acquisition Date | Dec. 26, 2024 | ||||||
| Maturity Date | Dec. 31, 2029 | Dec. 31, 2029 | |||||
| Principal/Share Amount | $ 3,611,000 | ||||||
| Investments, amortized cost | 3,539,000 | ||||||
| Investments, fair value | $ 3,539,000 | ||||||
| Percent of net assets | 1.20% | 1.20% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Keras Holdings, LLC Shares | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:KerasHoldingsLLCMember | whfcl:KerasHoldingsLLCMember | |||||
| Investment, Type [Extensible Enumeration] | Common Stock [Member] | Common Stock [Member] | Common Stock [Member] | Common Stock [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | |||
| Acquisition Date | Dec. 31, 2020 | Dec. 31, 2020 | |||||
| Investment owned shares | shares | 496 | 496 | 496 | 496 | |||
| Investments, amortized cost | $ 496,000 | $ 496,000 | |||||
| Investments, fair value | $ 779,000 | $ 683,000 | |||||
| Percent of net assets | 0.30% | 0.20% | 0.30% | 0.20% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: LINC Systems, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:LINCSystemsLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Paper & Plastic Packaging Products & Materials | Paper & Plastic Packaging Products & Materials | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.25% | 6.25% | |||||
| Interest Rate | 11.93% | 11.93% | |||||
| Acquisition Date | Jun. 22, 2021 | ||||||
| Maturity Date | Feb. 24, 2026 | Feb. 24, 2026 | |||||
| Investments, fair value | $ (1,000) | ||||||
| Investment, Identifier [Axis]: LINC Systems, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:LINCSystemsLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Paper & Plastic Packaging Products & Materials | Paper & Plastic Packaging Products & Materials | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.25% | 6.25% | |||||
| Interest Rate | 11.93% | 11.93% | |||||
| Acquisition Date | Jun. 22, 2021 | ||||||
| Maturity Date | Feb. 24, 2026 | Feb. 24, 2026 | |||||
| Principal/Share Amount | $ 8,534,000 | ||||||
| Investments, amortized cost | 8,454,000 | ||||||
| Investments, fair value | $ 8,443,000 | ||||||
| Investment, Identifier [Axis]: LINC Systems, LLC, First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:LINCSystemsLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Paper & Plastic Packaging Products & Materials | Paper & Plastic Packaging Products & Materials | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 8.50% | 8.50% | |||||
| Interest Rate | 12.99% | 12.99% | |||||
| Acquisition Date | Jun. 22, 2021 | ||||||
| Maturity Date | Feb. 24, 2026 | Feb. 24, 2026 | |||||
| Investments, fair value | $ 3,000 | ||||||
| Investment, Identifier [Axis]: LINC Systems, LLC, First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:LINCSystemsLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Paper & Plastic Packaging Products & Materials | Paper & Plastic Packaging Products & Materials | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 8.50% | 8.50% | |||||
| Interest Rate | 12.99% | 12.99% | |||||
| Acquisition Date | Jun. 22, 2021 | ||||||
| Maturity Date | Feb. 24, 2026 | Feb. 24, 2026 | |||||
| Principal/Share Amount | $ 8,155,000 | ||||||
| Investments, amortized cost | 8,114,000 | ||||||
| Investments, fair value | $ 8,155,000 | ||||||
| Investment, Identifier [Axis]: LMG Holdings, Inc First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:LMGHoldingsIncMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Electronic Equipment & Instruments | Electronic Equipment & Instruments | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 12.00% | 12.00% | |||||
| Acquisition Date | Jun. 28, 2021 | ||||||
| Maturity Date | Apr. 30, 2026 | Apr. 30, 2026 | |||||
| Principal/Share Amount | $ 13,330,000 | ||||||
| Investments, amortized cost | 13,203,000 | ||||||
| Investments, fair value | $ 13,265,000 | ||||||
| Investment, Identifier [Axis]: LMG Holdings, Inc. First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:LMGHoldingsIncMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Electronic Equipment & Instruments | Electronic Equipment & Instruments | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 12.00% | 12.00% | |||||
| Acquisition Date | Jun. 28, 2021 | ||||||
| Maturity Date | Apr. 30, 2026 | Apr. 30, 2026 | |||||
| Investments, fair value | $ 4,000 | ||||||
| Investment, Identifier [Axis]: LSCS Holdings, Inc Second Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:LSCSHoldingsIncMember | whfcl:LSCSHoldingsIncMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:SecondLienSecuredTermLoanMember | whfcl:SecondLienSecuredTermLoanMember | whfcl:SecondLienSecuredTermLoanMember | whfcl:SecondLienSecuredTermLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Life Sciences Tools & Services | Life Sciences Tools & Services | Life Sciences Tools & Services | Life Sciences Tools & Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 0.50% | 0.50% | 0.50% | 0.50% | |||
| Spread Above Index | 8.00% | 8.00% | 8.00% | 8.00% | |||
| Interest Rate | 12.47% | 13.47% | 12.47% | 13.47% | |||
| Acquisition Date | Nov. 23, 2021 | Nov. 23, 2021 | |||||
| Maturity Date | Dec. 16, 2029 | Dec. 16, 2029 | Dec. 16, 2029 | Dec. 16, 2029 | |||
| Principal/Share Amount | $ 5,000,000 | $ 5,000,000 | |||||
| Investments, amortized cost | 4,953,000 | 4,944,000 | |||||
| Investments, fair value | $ 5,000,000 | $ 4,901,000 | |||||
| Percent of net assets | 1.70% | 1.50% | 1.70% | 1.50% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Lab Logistics, LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:LabLogisticsLLCMember | whfcl:LabLogisticsLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Health Care Services | Health Care Services | Health Care Services | Health Care Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 7.25% | 7.25% | 7.25% | 7.25% | |||
| Interest Rate | 11.71% | 12.71% | 11.71% | 12.71% | |||
| Acquisition Date | Oct. 16, 2019 | Oct. 16, 2019 | |||||
| Maturity Date | Dec. 31, 2025 | Sep. 25, 2024 | Dec. 31, 2025 | Sep. 25, 2024 | |||
| Principal/Share Amount | $ 5,020,000 | $ 5,090,000 | |||||
| Investments, amortized cost | 5,020,000 | 5,089,000 | |||||
| Investments, fair value | $ 5,020,000 | $ 5,090,000 | |||||
| Percent of net assets | 1.80% | 1.60% | 1.80% | 1.60% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Lab Logistics, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:LabLogisticsLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Health Care Services | Health Care Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 7.25% | 7.25% | |||||
| Interest Rate | 11.71% | 11.71% | |||||
| Acquisition Date | Sep. 17, 2024 | ||||||
| Maturity Date | Dec. 31, 2025 | Dec. 31, 2025 | |||||
| Principal/Share Amount | $ 437,000 | ||||||
| Investments, amortized cost | 437,000 | ||||||
| Investments, fair value | $ 437,000 | ||||||
| Percent of net assets | 0.20% | 0.20% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Lab Logistics, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:LabLogisticsLLCMember | whfcl:LabLogisticsLLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Health Care Services | Health Care Services | Health Care Services | Health Care Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 7.25% | 7.25% | 7.25% | 7.25% | |||
| Interest Rate | 11.71% | 12.71% | 11.71% | 12.71% | |||
| Acquisition Date | Oct. 16, 2019 | Oct. 16, 2019 | |||||
| Maturity Date | Dec. 31, 2025 | Sep. 25, 2024 | Dec. 31, 2025 | Sep. 25, 2024 | |||
| Principal/Share Amount | $ 5,383,000 | $ 5,449,000 | |||||
| Investments, amortized cost | 5,381,000 | 5,442,000 | |||||
| Investments, fair value | $ 5,383,000 | $ 5,449,000 | |||||
| Percent of net assets | 1.90% | 1.70% | 1.90% | 1.70% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Leviathan Intermediate Holdco, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:LeviathanIntermediateHoldcoLlcMember | whfcl:LeviathanIntermediateHoldcoLlcMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Products | Leisure Products | Leisure Products | Leisure Products | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.50% | 1.50% | 1.50% | 1.50% | |||
| Spread Above Index | 7.50% | 7.50% | 7.50% | 7.50% | |||
| Interest Rate | 11.98% | 13.00% | 11.98% | 13.00% | |||
| Acquisition Date | Dec. 27, 2022 | Dec. 27, 2022 | |||||
| Maturity Date | Dec. 27, 2027 | Dec. 27, 2027 | Dec. 27, 2027 | Dec. 27, 2027 | |||
| Investments, fair value | $ 10,000 | $ 14,000 | |||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Leviathan Intermediate Holdco, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:LeviathanIntermediateHoldcoLlcMember | whfcl:LeviathanIntermediateHoldcoLlcMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Products | Leisure Products | Leisure Products | Leisure Products | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.50% | 1.50% | 1.50% | 1.50% | |||
| Spread Above Index | 7.50% | 7.50% | 7.50% | 7.50% | |||
| Interest Rate | 11.98% | 13.00% | 11.98% | 13.00% | |||
| Acquisition Date | Dec. 27, 2022 | Dec. 27, 2022 | |||||
| Maturity Date | Dec. 27, 2027 | Dec. 27, 2027 | Dec. 27, 2027 | Dec. 27, 2027 | |||
| Principal/Share Amount | $ 13,211,000 | $ 10,346,000 | |||||
| Investments, amortized cost | 12,981,000 | 10,098,000 | |||||
| Investments, fair value | $ 13,312,000 | $ 10,346,000 | |||||
| Percent of net assets | 4.60% | 3.30% | 4.60% | 3.30% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Lift Brands, Inc First Lien Secured Term Loan A | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:LiftBrandsIncMember | whfcl:LiftBrandsIncMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredTermLoanAMember | whfcl:FirstLienSecuredTermLoanAMember | whfcl:FirstLienSecuredTermLoanAMember | whfcl:FirstLienSecuredTermLoanAMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Facilities | Leisure Facilities | Leisure Facilities | Leisure Facilities | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 7.50% | 7.50% | 7.50% | 7.50% | |||
| Interest Rate | 11.96% | 12.96% | 11.96% | 12.96% | |||
| Acquisition Date | Jun. 29, 2020 | Jun. 29, 2020 | |||||
| Maturity Date | Jun. 29, 2025 | Jun. 29, 2025 | Jun. 29, 2025 | Jun. 29, 2025 | |||
| Principal/Share Amount | $ 5,461,000 | $ 5,518,000 | |||||
| Investments, amortized cost | 5,453,000 | 5,492,000 | |||||
| Investments, fair value | $ 5,461,000 | $ 5,457,000 | |||||
| Percent of net assets | 1.90% | 1.70% | 1.90% | 1.70% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Lift Brands, Inc First Lien Secured Term Loan B | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:LiftBrandsIncMember | whfcl:LiftBrandsIncMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredTermLoanBMember | whfcl:FirstLienSecuredTermLoanBMember | whfcl:FirstLienSecuredTermLoanBMember | whfcl:FirstLienSecuredTermLoanBMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Facilities | Leisure Facilities | Leisure Facilities | Leisure Facilities | |||
| Interest Rate | 9.50% | 9.50% | 9.50% | 9.50% | |||
| PIK interest rate | 9.50% | 9.50% | |||||
| Acquisition Date | Jun. 29, 2020 | Jun. 29, 2020 | |||||
| Maturity Date | Jun. 29, 2025 | Jun. 29, 2025 | Jun. 29, 2025 | Jun. 29, 2025 | |||
| Principal/Share Amount | $ 1,594,000 | $ 1,450,000 | |||||
| Investments, amortized cost | 1,592,000 | 1,441,000 | |||||
| Investments, fair value | $ 1,594,000 | $ 1,406,000 | |||||
| Percent of net assets | 0.60% | 0.40% | 0.60% | 0.40% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: LogicMonitor, Inc. First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | LogicMonitor, Inc. [Member] | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Systems Software | Systems Software | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 0.75% | 0.75% | |||||
| Spread Above Index | 5.50% | 5.50% | |||||
| Interest Rate | 9.99% | 9.99% | |||||
| Acquisition Date | Nov. 19, 2024 | ||||||
| Maturity Date | Nov. 19, 2031 | Nov. 19, 2031 | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: LogicMonitor, Inc. First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | LogicMonitor, Inc. [Member] | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Systems Software | Systems Software | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 0.75% | 0.75% | |||||
| Spread Above Index | 5.50% | 5.50% | |||||
| Interest Rate | 9.99% | 9.99% | |||||
| Acquisition Date | Nov. 19, 2024 | ||||||
| Maturity Date | Nov. 19, 2031 | Nov. 19, 2031 | |||||
| Principal/Share Amount | $ 6,220,000 | ||||||
| Investments, amortized cost | 6,144,000 | ||||||
| Investments, fair value | $ 6,144,000 | ||||||
| Percent of net assets | 2.10% | 2.10% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Luxury Brand Holdings, Inc First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:LuxuryBrandHoldingsIncMember | whfcl:LuxuryBrandHoldingsIncMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Broadline Retail | Broadline Retail | Broadline Retail | Broadline Retail | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 5.75% | 6.50% | 5.75% | 6.50% | |||
| Interest Rate | 10.11% | 11.96% | 10.11% | 11.96% | |||
| Acquisition Date | Dec. 04, 2020 | Dec. 04, 2020 | |||||
| Maturity Date | Jun. 04, 2026 | Jun. 04, 2026 | Jun. 04, 2026 | Jun. 04, 2026 | |||
| Principal/Share Amount | $ 4,580,000 | $ 5,280,000 | |||||
| Investments, amortized cost | 4,556,000 | 5,233,000 | |||||
| Investments, fair value | $ 4,580,000 | $ 5,280,000 | |||||
| Percent of net assets | 1.60% | 1.70% | 1.60% | 1.70% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: M2S Group Intermediate Holdings, Inc. First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:M2sGroupIntermediateHoldingsIncMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Paper Products | Paper Products | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Base Rate [Member] | Base Rate [Member] | |||||
| Floor | 0.50% | 0.50% | |||||
| Spread Above Index | 4.73% | 4.73% | |||||
| Interest Rate | 9.10% | 9.10% | |||||
| Acquisition Date | Aug. 22, 2024 | ||||||
| Maturity Date | Aug. 25, 2031 | Aug. 25, 2031 | |||||
| Principal/Share Amount | $ 9,770,000 | ||||||
| Investments, amortized cost | 9,119,000 | ||||||
| Investments, fair value | $ 9,453,000 | ||||||
| Percent of net assets | 3.30% | 3.30% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: MBS Highway, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MbsHighwayLlcMember | whfcl:MbsHighwayLlcMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Application Software | Application Software | Application Software | Application Software | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 8.50% | 7.50% | 8.50% | 7.50% | |||
| Interest Rate | 13.20% | 13.18% | 13.20% | 13.18% | |||
| Cash interest rate | 12.70% | 12.70% | |||||
| PIK interest rate | 0.50% | 0.50% | |||||
| Acquisition Date | Oct. 13, 2022 | Oct. 13, 2022 | |||||
| Maturity Date | Oct. 13, 2027 | Oct. 13, 2027 | Oct. 13, 2027 | Oct. 13, 2027 | |||
| Principal/Share Amount | $ 9,286,000 | $ 9,381,000 | |||||
| Investments, amortized cost | 9,157,000 | 9,204,000 | |||||
| Investments, fair value | $ 9,212,000 | $ 9,089,000 | |||||
| Percent of net assets | 3.20% | 2.90% | 3.20% | 2.90% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: MGT Merger Target, LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MgtMergerTargetLlcMember | whfcl:MgtMergerTargetLlcMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 5.97% | 6.50% | 5.97% | 6.50% | |||
| Interest Rate | 10.51% | 11.98% | 10.51% | 11.98% | |||
| Acquisition Date | May 10, 2023 | May 10, 2023 | |||||
| Maturity Date | Apr. 10, 2029 | Apr. 10, 2029 | Apr. 10, 2029 | Apr. 10, 2029 | |||
| Principal/Share Amount | $ 821,000 | $ 392,000 | |||||
| Investments, amortized cost | 804,000 | 378,000 | |||||
| Investments, fair value | $ 817,000 | $ 389,000 | |||||
| Investment, Identifier [Axis]: MGT Merger Target, LLC First lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MgtMergerTargetLlcMember | whfcl:MgtMergerTargetLlcMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | us-gaap:PrimeRateMember | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | us-gaap:PrimeRateMember | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 5.50% | 6.50% | 5.50% | 6.50% | |||
| Interest Rate | 13.00% | 11.98% | 13.00% | 11.98% | |||
| Acquisition Date | May 10, 2023 | May 10, 2023 | |||||
| Maturity Date | Apr. 10, 2028 | Apr. 10, 2028 | Apr. 10, 2028 | Apr. 10, 2028 | |||
| Principal/Share Amount | $ 241,000 | ||||||
| Investments, amortized cost | 236,000 | ||||||
| Investments, fair value | $ 249,000 | $ 11,000 | |||||
| Investment, Identifier [Axis]: MGT Merger Target, LLC First lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MgtMergerTargetLlcMember | whfcl:MgtMergerTargetLlcMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.39% | 6.50% | 6.39% | 6.50% | |||
| Interest Rate | 10.85% | 11.98% | 10.85% | 11.98% | |||
| Acquisition Date | May 10, 2023 | May 10, 2023 | |||||
| Maturity Date | Apr. 10, 2029 | Apr. 10, 2029 | Apr. 10, 2029 | Apr. 10, 2029 | |||
| Principal/Share Amount | $ 7,187,000 | $ 6,247,000 | |||||
| Investments, amortized cost | 7,040,000 | 6,084,000 | |||||
| Investments, fair value | $ 7,176,000 | $ 6,194,000 | |||||
| Investment, Identifier [Axis]: MSI Information Services, Inc First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MSIInformationServicesIncMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Education Services | Education Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Base Rate [Member] | Base Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.84% | 6.84% | |||||
| Interest Rate | 15.06% | 15.06% | |||||
| Acquisition Date | Apr. 25, 2022 | ||||||
| Maturity Date | Apr. 24, 2026 | Apr. 24, 2026 | |||||
| Principal/Share Amount | $ 825,000 | ||||||
| Investments, amortized cost | 815,000 | ||||||
| Investments, fair value | $ 776,000 | ||||||
| Percent of net assets | 0.20% | 0.20% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: MSI Information Services, Inc First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MSIInformationServicesIncMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Education Services | Education Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 7.75% | 7.75% | |||||
| Interest Rate | 13.29% | 13.29% | |||||
| Acquisition Date | Apr. 25, 2022 | ||||||
| Maturity Date | Apr. 24, 2026 | Apr. 24, 2026 | |||||
| Principal/Share Amount | $ 7,333,000 | ||||||
| Investments, amortized cost | 7,248,000 | ||||||
| Investments, fair value | $ 6,972,000 | ||||||
| Percent of net assets | 2.20% | 2.20% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: MSI Information Services, Inc. First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MSIInformationServicesIncMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Education Services | Education Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Base Rate [Member] | Base Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 8.82% | 8.82% | |||||
| Interest Rate | 15.24% | 15.24% | |||||
| Acquisition Date | Apr. 25, 2022 | ||||||
| Maturity Date | Apr. 24, 2026 | Apr. 24, 2026 | |||||
| Principal/Share Amount | $ 1,050,000 | ||||||
| Investments, amortized cost | 1,043,000 | ||||||
| Investments, fair value | $ 945,000 | ||||||
| Percent of net assets | 0.30% | 0.30% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: MSI Information Services, Inc. First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MSIInformationServicesIncMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Education Services | Education Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 9.75% | 9.75% | |||||
| Interest Rate | 14.23% | 14.23% | |||||
| Acquisition Date | Apr. 25, 2022 | ||||||
| Maturity Date | Apr. 24, 2026 | Apr. 24, 2026 | |||||
| Principal/Share Amount | $ 8,746,000 | ||||||
| Investments, amortized cost | 8,552,000 | ||||||
| Investments, fair value | $ 7,871,000 | ||||||
| Percent of net assets | 2.80% | 2.80% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Mamp;M OpCo. LLC (d/b/a Escalent, Inc.) First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | M&M OpCo. LLC (d/b/a Escalent, Inc.) | M&M OpCo. LLC (d/b/a Escalent, Inc.) | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Research & Consulting Services | Research & Consulting Services | Research & Consulting Services | Research & Consulting Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 8.00% | 8.00% | 8.00% | 8.00% | |||
| Interest Rate | 12.43% | 13.45% | 12.43% | 13.45% | |||
| Acquisition Date | Apr. 07, 2023 | Apr. 07, 2023 | |||||
| Maturity Date | Apr. 09, 2029 | Apr. 09, 2029 | Apr. 09, 2029 | Apr. 09, 2029 | |||
| Investments, fair value | $ 5,000 | $ (1,000) | |||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Mamp;M OpCo. LLC (d/b/a Escalent, Inc.) First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | M&M OpCo. LLC (d/b/a Escalent, Inc.) | M&M OpCo. LLC (d/b/a Escalent, Inc.) | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Research & Consulting Services | Research & Consulting Services | Research & Consulting Services | Research & Consulting Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 8.00% | 8.00% | 8.00% | 8.00% | |||
| Interest Rate | 12.43% | 13.45% | 12.43% | 13.45% | |||
| Acquisition Date | Apr. 07, 2023 | Apr. 07, 2023 | |||||
| Maturity Date | Apr. 09, 2029 | Apr. 09, 2029 | Apr. 09, 2029 | Apr. 09, 2029 | |||
| Principal/Share Amount | $ 4,927,000 | $ 4,726,000 | |||||
| Investments, amortized cost | 4,823,000 | 4,602,000 | |||||
| Investments, fair value | $ 4,922,000 | $ 4,580,000 | |||||
| Percent of net assets | 1.70% | 1.40% | 1.70% | 1.40% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Manchester Acquisition Sub LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ManchesterAcquisitionSubLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Diversified Chemicals | Diversified Chemicals | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 0.75% | 0.75% | |||||
| Spread Above Index | 5.75% | 5.75% | |||||
| Interest Rate | 11.28% | 11.28% | |||||
| Acquisition Date | Nov. 16, 2021 | ||||||
| Maturity Date | Dec. 01, 2026 | Dec. 01, 2026 | |||||
| Principal/Share Amount | $ 7,840,000 | ||||||
| Investments, amortized cost | 7,587,000 | ||||||
| Investments, fair value | $ 7,215,000 | ||||||
| Percent of net assets | 2.30% | 2.30% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Marlin DTC-LS Midco 2, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MarlinDTC-LSMidco2LLCMember | whfcl:MarlinDTC-LSMidco2LLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Broadline Retail | Broadline Retail | Broadline Retail | Broadline Retail | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.50% | 6.50% | 6.50% | 6.50% | |||
| Interest Rate | 11.03% | 11.99% | 11.03% | 11.99% | |||
| Acquisition Date | Jul. 19, 2019 | Jul. 19, 2019 | |||||
| Maturity Date | Jul. 01, 2025 | Jul. 01, 2025 | Jul. 01, 2025 | Jul. 01, 2025 | |||
| Investments, fair value | $ (38,000) | $ (3,000) | |||||
| Investment, Identifier [Axis]: Marlin DTC-LS Midco 2, LLC First Lien Secured Term | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MarlinDTC-LSMidco2LLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Broadline Retail | Broadline Retail | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 11.99% | 11.99% | |||||
| Acquisition Date | Jul. 19, 2019 | ||||||
| Maturity Date | Jul. 01, 2025 | Jul. 01, 2025 | |||||
| Principal/Share Amount | $ 18,908,000 | ||||||
| Investments, amortized cost | 18,798,000 | ||||||
| Investments, fair value | $ 18,762,000 | ||||||
| Investment, Identifier [Axis]: Marlin DTC-LS Midco 2, LLC, First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MarlinDTC-LSMidco2LLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Broadline Retail | Broadline Retail | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 11.03% | 11.03% | |||||
| Acquisition Date | Jul. 19, 2019 | ||||||
| Maturity Date | Jul. 01, 2025 | Jul. 01, 2025 | |||||
| Principal/Share Amount | $ 18,613,000 | ||||||
| Investments, amortized cost | 18,577,000 | ||||||
| Investments, fair value | $ 17,865,000 | ||||||
| Investment, Identifier [Axis]: Max Solutions Inc. Common Stock | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MaxSolutionsIncMember | whfcl:MaxSolutionsIncMember | |||||
| Investment, Type [Extensible Enumeration] | Common Stock [Member] | Common Stock [Member] | Common Stock [Member] | Common Stock [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Paper & Plastic Packaging Products & Materials | Paper & Plastic Packaging Products & Materials | Paper & Plastic Packaging Products & Materials | Paper & Plastic Packaging Products & Materials | |||
| Acquisition Date | Sep. 29, 2022 | Sep. 29, 2022 | |||||
| Investment owned shares | shares | 4 | 4 | 4 | 4 | |||
| Investments, amortized cost | $ 400,000 | $ 400,000 | |||||
| Investments, fair value | $ 179,000 | ||||||
| Percent of net assets | 0.10% | 0.10% | |||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Max Solutions, Inc. First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MaxSolutionsIncMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Paper & Plastic Packaging Products & Materials | Paper & Plastic Packaging Products & Materials | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 7.66% | 7.66% | |||||
| Interest Rate | 13.15% | 13.15% | |||||
| Acquisition Date | Oct. 07, 2022 | ||||||
| Maturity Date | Sep. 29, 2028 | Sep. 29, 2028 | |||||
| Investments, fair value | $ (17,000) | ||||||
| Investment, Identifier [Axis]: Max Solutions, Inc. First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MaxSolutionsIncMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Paper & Plastic Packaging Products & Materials | Paper & Plastic Packaging Products & Materials | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:CanadianDollarOfferedRateMember | whfcl:CanadianDollarOfferedRateMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 7.66% | 7.66% | |||||
| Interest Rate | 13.15% | 13.15% | |||||
| Acquisition Date | Oct. 07, 2022 | ||||||
| Maturity Date | Sep. 29, 2028 | Sep. 29, 2028 | |||||
| Investment, Identifier [Axis]: Max Solutions, Inc. First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MaxSolutionsIncMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Paper & Plastic Packaging Products & Materials | Paper & Plastic Packaging Products & Materials | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 7.66% | 7.66% | |||||
| Interest Rate | 13.15% | 13.15% | |||||
| Acquisition Date | Oct. 07, 2022 | ||||||
| Maturity Date | Sep. 29, 2028 | Sep. 29, 2028 | |||||
| Principal/Share Amount | $ 6,589,000 | ||||||
| Investments, amortized cost | 6,485,000 | ||||||
| Investments, fair value | $ 6,488,000 | ||||||
| Investment, Identifier [Axis]: Max Solutions, Inc., First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MaxSolutionsIncMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Paper & Plastic Packaging Products & Materials | Paper & Plastic Packaging Products & Materials | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 8.10% | 8.10% | |||||
| Interest Rate | 12.56% | 12.56% | |||||
| Acquisition Date | Oct. 07, 2022 | ||||||
| Maturity Date | Sep. 29, 2028 | Sep. 29, 2028 | |||||
| Principal/Share Amount | $ 414,000 | ||||||
| Investments, amortized cost | 411,000 | ||||||
| Investments, fair value | $ 402,000 | ||||||
| Investment, Identifier [Axis]: Max Solutions, Inc., First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MaxSolutionsIncMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Paper & Plastic Packaging Products & Materials | Paper & Plastic Packaging Products & Materials | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:CanadianOvernightRepoRateAverageMember | whfcl:CanadianOvernightRepoRateAverageMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 8.10% | 8.10% | |||||
| Interest Rate | 12.56% | 12.56% | |||||
| Acquisition Date | Oct. 07, 2022 | ||||||
| Maturity Date | Sep. 29, 2028 | Sep. 29, 2028 | |||||
| Investments, fair value | $ (3,000) | ||||||
| Investment, Identifier [Axis]: Max Solutions, Inc., First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MaxSolutionsIncMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Paper & Plastic Packaging Products & Materials | Paper & Plastic Packaging Products & Materials | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 8.11% | 8.11% | |||||
| Interest Rate | 12.57% | 12.57% | |||||
| Acquisition Date | Oct. 07, 2022 | ||||||
| Maturity Date | Sep. 29, 2028 | Sep. 29, 2028 | |||||
| Principal/Share Amount | $ 6,521,000 | ||||||
| Investments, amortized cost | 6,439,000 | ||||||
| Investments, fair value | $ 6,324,000 | ||||||
| Investment, Identifier [Axis]: Maxor Acquisition, Inc. (d/b/a Maxor National Pharmacy Services, LLC) First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MaxorAcquisitionInc.Member | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Health Care Services | Health Care Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.00% | 6.00% | |||||
| Interest Rate | 10.46% | 10.46% | |||||
| Acquisition Date | Dec. 27, 2024 | ||||||
| Maturity Date | Mar. 01, 2029 | Mar. 01, 2029 | |||||
| Principal/Share Amount | $ 947,000 | ||||||
| Investments, amortized cost | 938,000 | ||||||
| Investments, fair value | $ 938,000 | ||||||
| Percent of net assets | 0.30% | 0.30% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Maxor Acquisition, Inc. First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MaxorAcquisitionInc.Member | whfcl:MaxorAcquisitionInc.Member | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Health Care Services | Health Care Services | Health Care Services | Health Care Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.00% | 6.75% | 6.00% | 6.75% | |||
| Interest Rate | 10.46% | 12.48% | 10.46% | 12.48% | |||
| Acquisition Date | Apr. 11, 2023 | Apr. 11, 2023 | |||||
| Maturity Date | Mar. 01, 2029 | Mar. 01, 2029 | Mar. 01, 2029 | Mar. 01, 2029 | |||
| Investments, fair value | $ 9,000 | $ 9,000 | |||||
| Investment, Identifier [Axis]: Maxor Acquisition, Inc. First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MaxorAcquisitionInc.Member | whfcl:MaxorAcquisitionInc.Member | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Health Care Services | Health Care Services | Health Care Services | Health Care Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.00% | 6.75% | 6.00% | 6.75% | |||
| Interest Rate | 10.46% | 12.48% | 10.46% | 12.48% | |||
| Acquisition Date | Apr. 11, 2023 | Apr. 11, 2023 | |||||
| Maturity Date | Mar. 01, 2029 | Mar. 01, 2029 | Mar. 01, 2029 | Mar. 01, 2029 | |||
| Principal/Share Amount | $ 5,002,000 | $ 5,053,000 | |||||
| Investments, amortized cost | 4,898,000 | 4,922,000 | |||||
| Investments, fair value | $ 4,986,000 | $ 5,013,000 | |||||
| Investment, Identifier [Axis]: Medical Device Inc First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MedicalDeviceIncMember | whfcl:MedicalDeviceIncMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Health Care Supplies | Health Care Supplies | Health Care Supplies | Health Care Supplies | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.25% | 1.00% | 1.25% | 1.00% | |||
| Spread Above Index | 6.25% | 6.50% | 6.25% | 6.50% | |||
| Interest Rate | 10.68% | 11.95% | 10.68% | 11.95% | |||
| Acquisition Date | Jul. 27, 2023 | Jul. 27, 2023 | |||||
| Maturity Date | Jul. 11, 2029 | Jul. 11, 2029 | Jul. 11, 2029 | Jul. 11, 2029 | |||
| Investments, fair value | $ 6,000 | $ 3,000 | |||||
| Investment, Identifier [Axis]: Medical Device Inc First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MedicalDeviceIncMember | whfcl:MedicalDeviceIncMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Health Care Supplies | Health Care Supplies | Health Care Supplies | Health Care Supplies | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.25% | 1.00% | 1.25% | 1.00% | |||
| Spread Above Index | 6.25% | 6.50% | 6.25% | 6.50% | |||
| Interest Rate | 10.68% | 11.95% | 10.68% | 11.95% | |||
| Acquisition Date | Jul. 27, 2023 | Jul. 27, 2023 | |||||
| Maturity Date | Jul. 11, 2029 | Jul. 11, 2029 | Jul. 11, 2029 | Jul. 11, 2029 | |||
| Principal/Share Amount | $ 2,633,000 | $ 2,660,000 | |||||
| Investments, amortized cost | 2,584,000 | 2,599,000 | |||||
| Investments, fair value | $ 2,660,000 | $ 2,626,000 | |||||
| Investment, Identifier [Axis]: Merriman Holdings LP (d/b/a Escalent, Inc.) Class A Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MerrimanHoldingsLPMember | whfcl:MerrimanHoldingsLPMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:ClassAUnitsMember | whfcl:ClassAUnitsMember | whfcl:ClassAUnitsMember | whfcl:ClassAUnitsMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Research & Consulting Services | Research & Consulting Services | Research & Consulting Services | Research & Consulting Services | |||
| Acquisition Date | Apr. 07, 2023 | Apr. 07, 2023 | |||||
| Investment owned shares | shares | 327 | 327 | 327 | 327 | |||
| Investments, amortized cost | $ 333,000 | $ 333,000 | |||||
| Investments, fair value | $ 368,000 | $ 295,000 | |||||
| Percent of net assets | 0.10% | 0.10% | 0.10% | 0.10% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Meta Buyer LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MetaBuyerLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Pharmaceuticals [Member] | Pharmaceuticals [Member] | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.00% | 6.00% | |||||
| Interest Rate | 11.56% | 11.56% | |||||
| Acquisition Date | Dec. 16, 2021 | ||||||
| Maturity Date | Nov. 01, 2027 | Nov. 01, 2027 | |||||
| Principal/Share Amount | $ 883,000 | ||||||
| Investments, amortized cost | 871,000 | ||||||
| Investments, fair value | $ 883,000 | ||||||
| Investment, Identifier [Axis]: Meta Buyer LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MetaBuyerLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Pharmaceuticals [Member] | Pharmaceuticals [Member] | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.00% | 6.00% | |||||
| Interest Rate | 11.53% | 11.53% | |||||
| Acquisition Date | Dec. 16, 2021 | ||||||
| Maturity Date | Nov. 01, 2027 | Nov. 01, 2027 | |||||
| Principal/Share Amount | $ 1,156,000 | ||||||
| Investments, amortized cost | 1,141,000 | ||||||
| Investments, fair value | $ 1,161,000 | ||||||
| Investment, Identifier [Axis]: Meta Buyer LLC First Lien Secured Term Loan One | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MetaBuyerLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Pharmaceuticals [Member] | Pharmaceuticals [Member] | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:EuroInterbankOfferedRateMember | whfcl:EuroInterbankOfferedRateMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.00% | 6.00% | |||||
| Interest Rate | 9.87% | 9.87% | |||||
| Acquisition Date | Dec. 16, 2021 | ||||||
| Maturity Date | Nov. 01, 2027 | Nov. 01, 2027 | |||||
| Principal/Share Amount | $ 12,163,000 | ||||||
| Investments, amortized cost | 13,552,000 | ||||||
| Investments, fair value | $ 13,401,000 | ||||||
| Investment, Identifier [Axis]: Meta Buyer LLC First Lien Secured Term Loan Two | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MetaBuyerLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Pharmaceuticals [Member] | Pharmaceuticals [Member] | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.00% | 6.00% | |||||
| Interest Rate | 11.46% | 11.46% | |||||
| Acquisition Date | Dec. 16, 2021 | ||||||
| Maturity Date | Nov. 01, 2027 | Nov. 01, 2027 | |||||
| Principal/Share Amount | $ 971,000 | ||||||
| Investments, amortized cost | 959,000 | ||||||
| Investments, fair value | $ 971,000 | ||||||
| Investment, Identifier [Axis]: Meta Buyer LLC., First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MetaBuyerLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Pharmaceuticals [Member] | Pharmaceuticals [Member] | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.00% | 6.00% | |||||
| Interest Rate | 10.51% | 10.51% | |||||
| Acquisition Date | Dec. 16, 2021 | ||||||
| Maturity Date | Nov. 01, 2027 | Nov. 01, 2027 | |||||
| Principal/Share Amount | $ 874,000 | ||||||
| Investments, amortized cost | 865,000 | ||||||
| Investments, fair value | $ 874,000 | ||||||
| Investment, Identifier [Axis]: Meta Buyer LLC., First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MetaBuyerLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Pharmaceuticals [Member] | Pharmaceuticals [Member] | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:EuroInterbankOfferedRateMember | whfcl:EuroInterbankOfferedRateMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.00% | 6.00% | |||||
| Interest Rate | 8.85% | 8.85% | |||||
| Acquisition Date | Dec. 16, 2021 | ||||||
| Maturity Date | Nov. 01, 2027 | Nov. 01, 2027 | |||||
| Principal/Share Amount | $ 12,039,000 | ||||||
| Investments, amortized cost | 13,449,000 | ||||||
| Investments, fair value | $ 12,465,000 | ||||||
| Investment, Identifier [Axis]: Meta Buyer LLC., First Lien Secured Term Loan One | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MetaBuyerLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Pharmaceuticals [Member] | Pharmaceuticals [Member] | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.00% | 6.00% | |||||
| Interest Rate | 10.48% | 10.48% | |||||
| Acquisition Date | Dec. 16, 2021 | ||||||
| Maturity Date | Nov. 01, 2027 | Nov. 01, 2027 | |||||
| Principal/Share Amount | $ 962,000 | ||||||
| Investments, amortized cost | 952,000 | ||||||
| Investments, fair value | $ 962,000 | ||||||
| Investment, Identifier [Axis]: Meta Buyer LLC.,First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MetaBuyerLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Pharmaceuticals [Member] | Pharmaceuticals [Member] | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.00% | 6.00% | |||||
| Interest Rate | 10.44% | 10.44% | |||||
| Acquisition Date | Dec. 16, 2021 | ||||||
| Maturity Date | Nov. 01, 2027 | Nov. 01, 2027 | |||||
| Principal/Share Amount | $ 1,156,000 | ||||||
| Investments, amortized cost | 1,145,000 | ||||||
| Investments, fair value | $ 1,160,000 | ||||||
| Investment, Identifier [Axis]: Midwest Texas Tea CA, LLC (d/b/a US Petroleum Partners, LLC) First Lien Secured Bridge Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Midwest Texas Tea CA, LLC [Member] | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredBridgeLoanMember | whfcl:FirstLienSecuredBridgeLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Distributors | Distributors | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 14.00% | 14.00% | |||||
| Interest Rate | 19.46% | 19.46% | |||||
| Cash interest rate | 13.46% | 13.46% | |||||
| PIK interest rate | 6.00% | 6.00% | |||||
| Acquisition Date | Dec. 22, 2023 | ||||||
| Maturity Date | Dec. 22, 2025 | Dec. 22, 2025 | |||||
| Principal/Share Amount | $ 1,464,000 | ||||||
| Investments, amortized cost | 1,420,000 | ||||||
| Investments, fair value | $ 1,420,000 | ||||||
| Percent of net assets | 0.40% | 0.40% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Midwest Texas Tea CA, LLC (d/b/a US Petroleum Partners, LLC) First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | Midwest Texas Tea CA, LLC [Member] | Midwest Texas Tea CA, LLC [Member] | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Distributors | Distributors | Distributors | Distributors | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 7.25% | 7.25% | 7.25% | 7.25% | |||
| Interest Rate | 11.71% | 12.71% | 11.71% | 12.71% | |||
| Acquisition Date | Dec. 22, 2023 | Dec. 22, 2023 | |||||
| Maturity Date | Dec. 22, 2028 | Dec. 22, 2028 | Dec. 22, 2028 | Dec. 22, 2028 | |||
| Principal/Share Amount | $ 645,000 | ||||||
| Investments, amortized cost | 632,000 | ||||||
| Investments, fair value | $ 642,000 | ||||||
| Percent of net assets | 0.20% | 0.20% | |||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Midwest Texas Tea CA, LLC (d/b/a US Petroleum Partners, LLC) First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | Midwest Texas Tea CA, LLC [Member] | Midwest Texas Tea CA, LLC [Member] | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Distributors | Distributors | Distributors | Distributors | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Base Rate [Member] | whfcl:SecuredOvernightFinancingRateSofrMember | Base Rate [Member] | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.92% | 7.25% | 6.92% | 7.25% | |||
| Interest Rate | 12.39% | 12.71% | 12.39% | 12.71% | |||
| Acquisition Date | Dec. 22, 2023 | Dec. 22, 2023 | |||||
| Maturity Date | Dec. 22, 2028 | Dec. 22, 2028 | Dec. 22, 2028 | Dec. 22, 2028 | |||
| Principal/Share Amount | $ 326,000 | ||||||
| Investments, amortized cost | 319,000 | ||||||
| Investments, fair value | $ 328,000 | ||||||
| Percent of net assets | 0.10% | 0.10% | |||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Midwest Texas Tea CA, LLC (d/b/a US Petroleum Partners, LLC) First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | Midwest Texas Tea CA, LLC [Member] | Midwest Texas Tea CA, LLC [Member] | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Distributors | Distributors | Distributors | Distributors | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 7.25% | 7.25% | 7.25% | 7.25% | |||
| Interest Rate | 11.71% | 12.71% | 11.71% | 12.71% | |||
| Acquisition Date | Dec. 22, 2023 | Dec. 22, 2023 | |||||
| Maturity Date | Dec. 22, 2028 | Dec. 22, 2028 | Dec. 22, 2028 | Dec. 22, 2028 | |||
| Principal/Share Amount | $ 9,443,000 | $ 9,490,000 | |||||
| Investments, amortized cost | 9,255,000 | 9,254,000 | |||||
| Investments, fair value | $ 9,399,000 | $ 9,254,000 | |||||
| Percent of net assets | 3.30% | 2.90% | 3.30% | 2.90% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Monarch Collective Holdings, LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MonarchCollectiveHoldingsLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Real Estate Services [Member] | Real Estate Services [Member] | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.50% | 1.50% | |||||
| Spread Above Index | 6.75% | 6.75% | |||||
| Interest Rate | 11.16% | 11.16% | |||||
| Acquisition Date | Jan. 10, 2024 | ||||||
| Maturity Date | Jan. 10, 2029 | Jan. 10, 2029 | |||||
| Principal/Share Amount | $ 1,596,000 | ||||||
| Investments, amortized cost | 1,572,000 | ||||||
| Investments, fair value | $ 1,582,000 | ||||||
| Percent of net assets | 0.60% | 0.60% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Monarch Collective Holdings, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MonarchCollectiveHoldingsLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Real Estate Services [Member] | Real Estate Services [Member] | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.50% | 1.50% | |||||
| Spread Above Index | 6.75% | 6.75% | |||||
| Interest Rate | 11.08% | 11.08% | |||||
| Acquisition Date | Jan. 10, 2024 | ||||||
| Maturity Date | Jan. 10, 2029 | Jan. 10, 2029 | |||||
| Principal/Share Amount | $ 9,306,000 | ||||||
| Investments, amortized cost | 9,119,000 | ||||||
| Investments, fair value | $ 9,223,000 | ||||||
| Percent of net assets | 3.20% | 3.20% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Motivational CIV, LLC Class B Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MotivationalCIVLLCMember | whfcl:MotivationalCIVLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:ClassBUnitsMember | whfcl:ClassBUnitsMember | whfcl:ClassBUnitsMember | whfcl:ClassBUnitsMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Air Freight & Logistics | Air Freight & Logistics | Air Freight & Logistics | Air Freight & Logistics | |||
| Acquisition Date | Jul. 12, 2021 | Jul. 12, 2021 | |||||
| Investment owned shares | shares | 1,250 | 1,250 | 1,250 | 1,250 | |||
| Investments, amortized cost | $ 1,250,000 | $ 1,250,000 | |||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Motivational Marketing, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MotivationalMarketingLLCMember | whfcl:MotivationalMarketingLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Air Freight & Logistics | Air Freight & Logistics | Air Freight & Logistics | Air Freight & Logistics | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 8.50% | 7.25% | 8.50% | 7.25% | |||
| Interest Rate | 13.00% | 12.71% | 13.00% | 12.71% | |||
| Cash interest rate | 11.00% | 11.96% | 11.00% | 11.96% | |||
| PIK interest rate | 2.00% | 0.75% | 2.00% | 0.75% | |||
| Acquisition Date | Jul. 12, 2021 | Jul. 12, 2021 | |||||
| Maturity Date | Jul. 12, 2026 | Jul. 12, 2026 | Jul. 12, 2026 | Jul. 12, 2026 | |||
| Principal/Share Amount | $ 1,182,000 | $ 473,000 | |||||
| Investments, amortized cost | 1,175,000 | 468,000 | |||||
| Investments, fair value | $ 1,061,000 | $ 338,000 | |||||
| Percent of net assets | 0.40% | 0.10% | 0.40% | 0.10% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Motivational Marketing, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:MotivationalMarketingLLCMember | whfcl:MotivationalMarketingLLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Air Freight & Logistics | Air Freight & Logistics | Air Freight & Logistics | Air Freight & Logistics | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 8.50% | 7.25% | 8.50% | 7.25% | |||
| Interest Rate | 12.96% | 12.71% | 12.96% | 12.71% | |||
| Cash interest rate | 5.48% | 11.96% | 5.48% | 11.96% | |||
| PIK interest rate | 7.48% | 0.75% | 7.48% | 0.75% | |||
| Acquisition Date | Jul. 12, 2021 | Jul. 12, 2021 | |||||
| Maturity Date | Jul. 12, 2026 | Jul. 12, 2026 | Jul. 12, 2026 | Jul. 12, 2026 | |||
| Principal/Share Amount | $ 10,510,000 | $ 9,989,000 | |||||
| Investments, amortized cost | 10,449,000 | 9,888,000 | |||||
| Investments, fair value | $ 9,438,000 | $ 8,790,000 | |||||
| Percent of net assets | 3.20% | 2.80% | 3.20% | 2.80% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: NNA Services, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:NNAServicesLLCMember | whfcl:NNAServicesLLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Diversified Support Services | Diversified Support Services | Diversified Support Services | Diversified Support Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 7.25% | 6.75% | 7.25% | 6.75% | |||
| Interest Rate | 11.73% | 12.25% | 11.73% | 12.25% | |||
| Acquisition Date | Aug. 27, 2021 | Aug. 27, 2021 | |||||
| Maturity Date | Aug. 27, 2026 | Aug. 27, 2026 | Aug. 27, 2026 | Aug. 27, 2026 | |||
| Principal/Share Amount | $ 9,125,000 | $ 9,417,000 | |||||
| Investments, amortized cost | 9,087,000 | 9,354,000 | |||||
| Investments, fair value | $ 8,941,000 | $ 9,293,000 | |||||
| Percent of net assets | 3.10% | 2.90% | 3.10% | 2.90% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: NPAV Lessor Corp., First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:NPAVLessorCorp.Member | whfcl:NPAVLessorCorp.Member | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Real Estate Services [Member] | Real Estate Services [Member] | Real Estate Services [Member] | Real Estate Services [Member] | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.50% | 6.50% | 6.50% | 6.50% | |||
| Interest Rate | 10.96% | 11.96% | 10.96% | 11.96% | |||
| Acquisition Date | Mar. 01, 2022 | Mar. 01, 2022 | |||||
| Maturity Date | Jan. 21, 2027 | Jan. 21, 2027 | Jan. 21, 2027 | Jan. 21, 2027 | |||
| Principal/Share Amount | $ 725,000 | $ 725,000 | |||||
| Investments, amortized cost | 719,000 | 716,000 | |||||
| Investments, fair value | $ 660,000 | $ 647,000 | |||||
| Investment, Identifier [Axis]: NPAV Lessor Corp., First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:NPAVLessorCorp.Member | whfcl:NPAVLessorCorp.Member | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Real Estate Services [Member] | Real Estate Services [Member] | Real Estate Services [Member] | Real Estate Services [Member] | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.50% | 6.50% | 6.50% | 6.50% | |||
| Interest Rate | 10.96% | 11.96% | 10.96% | 11.96% | |||
| Acquisition Date | Mar. 01, 2022 | Mar. 01, 2022 | |||||
| Maturity Date | Jan. 21, 2027 | Jan. 21, 2027 | Jan. 21, 2027 | Jan. 21, 2027 | |||
| Principal/Share Amount | $ 6,502,000 | $ 7,510,000 | |||||
| Investments, amortized cost | 6,448,000 | 7,418,000 | |||||
| Investments, fair value | $ 5,918,000 | $ 6,706,000 | |||||
| Investment, Identifier [Axis]: Naviga Inc First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:NavigaIncMember | whfcl:NavigaIncMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Application Software | Application Software | Application Software | Application Software | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Base Rate [Member] | Base Rate [Member] | Base Rate [Member] | Base Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.84% | 6.84% | 6.84% | 6.84% | |||
| Interest Rate | 12.78% | 12.78% | 12.78% | 12.78% | |||
| Acquisition Date | Jun. 14, 2019 | Jun. 14, 2019 | |||||
| Maturity Date | Jun. 28, 2024 | Feb. 27, 2024 | Jun. 28, 2024 | Feb. 27, 2024 | |||
| Principal/Share Amount | $ 301,000 | $ 271,000 | |||||
| Investments, amortized cost | 301,000 | 271,000 | |||||
| Investments, fair value | $ 169,000 | $ 268,000 | |||||
| Percent of net assets | 0.10% | 0.10% | 0.10% | 0.10% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Naviga Inc First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:NavigaIncMember | whfcl:NavigaIncMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Application Software | Application Software | Application Software | Application Software | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 7.00% | 7.00% | 7.00% | 7.00% | |||
| Interest Rate | 12.40% | 12.45% | 12.40% | 12.45% | |||
| Acquisition Date | Jun. 14, 2019 | Jun. 14, 2019 | |||||
| Maturity Date | Jun. 28, 2024 | Feb. 27, 2024 | Jun. 28, 2024 | Feb. 27, 2024 | |||
| Principal/Share Amount | $ 3,140,000 | $ 3,148,000 | |||||
| Investments, amortized cost | 3,140,000 | 3,148,000 | |||||
| Investments, fair value | $ 1,763,000 | $ 3,113,000 | |||||
| Percent of net assets | 0.60% | 1.00% | 0.60% | 1.00% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: New American Crafts Holdings, LLC Class A Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Controlled affiliate company investments | Controlled affiliate company investments | Controlled affiliate company investments | Controlled affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:NewAmericanCraftsHoldingsLlcMember | whfcl:NewAmericanCraftsHoldingsLlcClassaUnitsMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:ClassAUnitsMember | whfcl:ClassAUnitsMember | whfcl:ClassAUnitsMember | whfcl:ClassAUnitsMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Products | Leisure Products | Leisure Products | Leisure Products | |||
| Acquisition Date | Mar. 16, 2023 | Mar. 16, 2023 | |||||
| Investment owned shares | shares | 1 | 1 | 1 | 1 | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: PANOS Brands, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Panos Brands, Llc [Member] | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Packaged Foods & Meats | Packaged Foods & Meats | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.75% | 5.75% | |||||
| Interest Rate | 10.15% | 10.15% | |||||
| Acquisition Date | May 14, 2024 | ||||||
| Maturity Date | May 14, 2029 | May 14, 2029 | |||||
| Principal/Share Amount | $ 27,000 | ||||||
| Investments, amortized cost | 27,000 | ||||||
| Investments, fair value | $ 33,000 | ||||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: PANOS Brands, LLC First Lien Secured Revolving Loan, One 05/14/29 | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | Panos Brands, Llc [Member] | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.75% | 5.75% | |||||
| Interest Rate | 10.15% | 10.15% | |||||
| Acquisition Date | Jun. 14, 2024 | ||||||
| Maturity Date | May 14, 2029 | May 14, 2029 | |||||
| Principal/Share Amount | $ 30,000 | ||||||
| Investments, amortized cost | 30,000 | ||||||
| Investments, fair value | $ 36,000 | ||||||
| Investment, Identifier [Axis]: PANOS Brands, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | Panos Brands, Llc [Member] | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.75% | 5.75% | |||||
| Interest Rate | 10.13% | 10.13% | |||||
| Acquisition Date | Jun. 14, 2024 | ||||||
| Maturity Date | May 14, 2029 | May 14, 2029 | |||||
| Principal/Share Amount | $ 4,520,000 | ||||||
| Investments, amortized cost | 4,441,000 | ||||||
| Investments, fair value | $ 4,505,000 | ||||||
| Investment, Identifier [Axis]: PANOS Brands, LLC First Lien Secured Term Loan, One 05/14/29 | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Panos Brands, Llc [Member] | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Packaged Foods & Meats | Packaged Foods & Meats | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.75% | 5.75% | |||||
| Interest Rate | 10.13% | 10.13% | |||||
| Acquisition Date | May 14, 2024 | ||||||
| Maturity Date | May 14, 2029 | May 14, 2029 | |||||
| Principal/Share Amount | $ 4,068,000 | ||||||
| Investments, amortized cost | 3,997,000 | ||||||
| Investments, fair value | $ 4,054,000 | ||||||
| Percent of net assets | 1.40% | 1.40% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: PFB Holdco, Inc Class A Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PfbHoldingCompanyLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:ClassAUnitsMember | whfcl:ClassAUnitsMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Building Products | Building Products | |||||
| Acquisition Date | Dec. 17, 2021 | ||||||
| Investment owned shares | shares | 1 | 1 | |||||
| Investments, amortized cost | $ 423,000 | ||||||
| Investments, fair value | $ 1,053,000 | ||||||
| Percent of net assets | 0.30% | 0.30% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: PFB Holding Company, LLC Class A Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PFBHoldcoIncMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:ClassAUnitsMember | whfcl:ClassAUnitsMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Building Products | Building Products | |||||
| Acquisition Date | Dec. 17, 2021 | ||||||
| Investment owned shares | shares | 1 | 1 | |||||
| Investments, amortized cost | $ 24,000 | ||||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: PG Dental New Jersey Parent, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PGDentalNewJerseyParentLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Health Care Services | Health Care Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Base Rate [Member] | Base Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 7.00% | 7.00% | |||||
| Interest Rate | 13.98% | 13.98% | |||||
| Cash interest rate | 11.73% | 11.73% | |||||
| PIK interest rate | 2.25% | 2.25% | |||||
| Acquisition Date | Nov. 25, 2020 | ||||||
| Maturity Date | Nov. 25, 2025 | Nov. 25, 2025 | |||||
| Principal/Share Amount | $ 704,000 | ||||||
| Investments, amortized cost | 698,000 | ||||||
| Investments, fair value | $ 704,000 | ||||||
| Percent of net assets | 0.20% | 0.20% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: PG Dental New Jersey Parent, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PGDentalNewJerseyParentLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Health Care Services | Health Care Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 7.50% | 7.50% | |||||
| Interest Rate | 12.96% | 12.96% | |||||
| Cash interest rate | 10.71% | 10.71% | |||||
| PIK interest rate | 2.25% | 2.25% | |||||
| Acquisition Date | Nov. 25, 2020 | ||||||
| Maturity Date | Nov. 25, 2025 | Nov. 25, 2025 | |||||
| Principal/Share Amount | $ 6,400,000 | ||||||
| Investments, amortized cost | 6,348,000 | ||||||
| Investments, fair value | $ 6,400,000 | ||||||
| Percent of net assets | 2.00% | 2.00% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: PLTFRM Companies, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PltfrmCompaniesLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Advertising | Advertising | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 3.00% | 3.00% | |||||
| Spread Above Index | 9.00% | 9.00% | |||||
| Interest Rate | 13.34% | 13.34% | |||||
| Cash interest rate | 12.34% | 12.34% | |||||
| PIK interest rate | 1.00% | 1.00% | |||||
| Acquisition Date | Jan. 29, 2024 | ||||||
| Maturity Date | Jan. 29, 2029 | Jan. 29, 2029 | |||||
| Principal/Share Amount | $ 889,000 | ||||||
| Investments, amortized cost | 867,000 | ||||||
| Investments, fair value | $ 916,000 | ||||||
| Percent of net assets | 0.30% | 0.30% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: PLTFRM Companies, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PltfrmCompaniesLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Advertising | Advertising | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 3.00% | 3.00% | |||||
| Spread Above Index | 9.00% | 9.00% | |||||
| Interest Rate | 13.36% | 13.36% | |||||
| Cash interest rate | 12.36% | 12.36% | |||||
| PIK interest rate | 1.00% | 1.00% | |||||
| Acquisition Date | Jan. 29, 2024 | ||||||
| Maturity Date | Jan. 29, 2029 | Jan. 29, 2029 | |||||
| Principal/Share Amount | $ 7,950,000 | ||||||
| Investments, amortized cost | 7,757,000 | ||||||
| Investments, fair value | $ 8,188,000 | ||||||
| Percent of net assets | 3.00% | 3.00% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Patagonia Holdco LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PatagoniaHoldcoLLCMember | whfcl:PatagoniaHoldcoLLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Integrated Telecommunication Services | Integrated Telecommunication Services | Integrated Telecommunication Services | Integrated Telecommunication Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 0.50% | 0.50% | 0.50% | 0.50% | |||
| Spread Above Index | 5.75% | 5.75% | 5.75% | 5.75% | |||
| Interest Rate | 10.27% | 11.12% | 10.27% | 11.12% | |||
| Acquisition Date | Aug. 05, 2022 | Aug. 05, 2022 | |||||
| Maturity Date | Aug. 01, 2029 | Aug. 01, 2029 | Aug. 01, 2029 | Aug. 01, 2029 | |||
| Principal/Share Amount | $ 14,296,000 | $ 14,442,000 | |||||
| Investments, amortized cost | 12,602,000 | 12,357,000 | |||||
| Investments, fair value | $ 13,135,000 | $ 13,191,000 | |||||
| Percent of net assets | 4.60% | 4.20% | 4.60% | 4.20% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Pavement Partners Interco, LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PavementPartnersIntercoLLCMember | whfcl:PavementPartnersIntercoLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Construction & Engineering | Construction & Engineering | Construction & Engineering | Construction & Engineering | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.75% | 6.75% | 6.75% | 6.75% | |||
| Interest Rate | 11.23% | 12.42% | 11.23% | 12.42% | |||
| Acquisition Date | Mar. 17, 2023 | Mar. 17, 2023 | |||||
| Maturity Date | Feb. 07, 2028 | Feb. 07, 2028 | Feb. 07, 2028 | Feb. 07, 2028 | |||
| Principal/Share Amount | $ 569,000 | $ 575,000 | |||||
| Investments, amortized cost | 558,000 | 560,000 | |||||
| Investments, fair value | $ 569,000 | $ 569,000 | |||||
| Investment, Identifier [Axis]: Pavement Partners Interco, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PavementPartnersIntercoLLCMember | whfcl:PavementPartnersIntercoLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Construction & Engineering | Construction & Engineering | Construction & Engineering | Construction & Engineering | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.75% | 6.75% | 6.75% | 6.75% | |||
| Interest Rate | 11.23% | 12.42% | 11.23% | 12.42% | |||
| Acquisition Date | Mar. 17, 2023 | Mar. 17, 2023 | |||||
| Maturity Date | Feb. 07, 2028 | Feb. 07, 2028 | Feb. 07, 2028 | Feb. 07, 2028 | |||
| Principal/Share Amount | $ 338,000 | ||||||
| Investments, amortized cost | 331,000 | ||||||
| Investments, fair value | $ 341,000 | $ 5,000 | |||||
| Investment, Identifier [Axis]: Pavement Partners Interco, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PavementPartnersIntercoLLCMember | whfcl:PavementPartnersIntercoLLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Construction & Engineering | Construction & Engineering | Construction & Engineering | Construction & Engineering | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.75% | 6.75% | 6.75% | 6.75% | |||
| Interest Rate | 11.23% | 12.27% | 11.23% | 12.27% | |||
| Acquisition Date | Mar. 17, 2023 | Mar. 17, 2023 | |||||
| Maturity Date | Feb. 07, 2028 | Feb. 07, 2028 | Feb. 07, 2028 | Feb. 07, 2028 | |||
| Principal/Share Amount | $ 5,117,000 | $ 4,455,000 | |||||
| Investments, amortized cost | 5,015,000 | 4,344,000 | |||||
| Investments, fair value | $ 5,111,000 | $ 4,405,000 | |||||
| Investment, Identifier [Axis]: Pennsylvania Machine Works, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PennsylvaniaMachineWorksLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Industrial Machinery & Supplies & Components | Industrial Machinery & Supplies & Components | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.00% | 6.00% | |||||
| Interest Rate | 11.61% | 11.61% | |||||
| Acquisition Date | Mar. 25, 2022 | ||||||
| Maturity Date | Mar. 08, 2027 | Mar. 08, 2027 | |||||
| Principal/Share Amount | $ 6,561,000 | ||||||
| Investments, amortized cost | 6,498,000 | ||||||
| Investments, fair value | $ 6,561,000 | ||||||
| Investment, Identifier [Axis]: Pirtek Holdco, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PirtekHoldcoLLCMember | whfcl:PirtekHoldcoLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Diversified Support Services | Diversified Support Services | Diversified Support Services | Diversified Support Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 5.50% | 5.75% | 5.50% | 5.75% | |||
| Interest Rate | 9.95% | 11.20% | 9.95% | 11.20% | |||
| Acquisition Date | Oct. 31, 2023 | Oct. 31, 2023 | |||||
| Maturity Date | Oct. 26, 2028 | Oct. 26, 2028 | Oct. 26, 2028 | Oct. 26, 2028 | |||
| Investments, fair value | $ 17,000 | ||||||
| Investment, Identifier [Axis]: Pirtek Holdco, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PirtekHoldcoLLCMember | whfcl:PirtekHoldcoLLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Diversified Support Services | Diversified Support Services | Diversified Support Services | Diversified Support Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 5.50% | 5.75% | 5.50% | 5.75% | |||
| Interest Rate | 9.95% | 11.20% | 9.95% | 11.20% | |||
| Acquisition Date | Oct. 31, 2023 | Oct. 31, 2023 | |||||
| Maturity Date | Oct. 26, 2028 | Oct. 26, 2028 | Oct. 26, 2028 | Oct. 26, 2028 | |||
| Principal/Share Amount | $ 7,425,000 | $ 7,500,000 | |||||
| Investments, amortized cost | 7,298,000 | 7,337,000 | |||||
| Investments, fair value | $ 7,425,000 | $ 7,337,000 | |||||
| Investment, Identifier [Axis]: PlayMonster LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PlaymonsterGroupLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investments, fair value | $ 1,363,000 | 2,977,000 | |||||
| Investment, Identifier [Axis]: Playmonster Group Equity, Inc Common Stock | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled affiliate company investments | Non-controlled affiliate company investments | Non-controlled affiliate company investments | Non-controlled affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PlaymonsterGroupEquityIncMember | whfcl:PlaymonsterGroupEquityIncMember | |||||
| Investment, Type [Extensible Enumeration] | Common Stock [Member] | Common Stock [Member] | Common Stock [Member] | Common Stock [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Products | Leisure Products | Leisure Products | Leisure Products | |||
| Acquisition Date | Jan. 24, 2022 | Jan. 24, 2022 | |||||
| Investment owned shares | shares | 72 | 72 | 72 | 72 | |||
| Investments, amortized cost | $ 460,000 | $ 460,000 | |||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Playmonster Group Equity, Inc. Preferred Stock | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled affiliate company investments | Non-controlled affiliate company investments | Non-controlled affiliate company investments | Non-controlled affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PlaymonsterGroupEquityIncMember | whfcl:PlaymonsterGroupEquityIncMember | |||||
| Investment, Type [Extensible Enumeration] | us-gaap:PreferredStockMember | us-gaap:PreferredStockMember | us-gaap:PreferredStockMember | us-gaap:PreferredStockMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Products | Leisure Products | Leisure Products | Leisure Products | |||
| Interest Rate | 14.00% | 14.00% | 14.00% | 14.00% | |||
| PIK interest rate | 14.00% | 14.00% | 14.00% | 14.00% | |||
| Acquisition Date | Jan. 24, 2022 | Jan. 24, 2022 | |||||
| Investment owned shares | shares | 36 | 36 | 36 | 36 | |||
| Investments, amortized cost | $ 3,600,000 | $ 3,600,000 | |||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | true | true | true | true | |||
| Investment, Identifier [Axis]: Playmonster Group LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled affiliate company investments | Non-controlled affiliate company investments | Non-controlled affiliate company investments | Non-controlled affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PlaymonsterGroupLLCMember | whfcl:PlayMonsterLLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Products | Leisure Products | Leisure Products | Leisure Products | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 9.00% | 9.00% | 9.00% | 9.00% | |||
| PIK interest rate | 13.74% | 14.53% | 13.74% | 14.53% | |||
| Acquisition Date | Jun. 07, 2021 | Jun. 07, 2021 | |||||
| Maturity Date | Jun. 08, 2026 | Jun. 08, 2026 | Jun. 08, 2026 | Jun. 08, 2026 | |||
| Principal/Share Amount | $ 4,890,000 | $ 4,232,000 | |||||
| Investments, amortized cost | 3,661,000 | 3,661,000 | |||||
| Investments, fair value | $ 1,635,000 | $ 1,363,000 | |||||
| Percent of net assets | 0.60% | 0.40% | 0.60% | 0.40% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Playmonster Group LLC, Priority First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled affiliate company investments | Non-controlled affiliate company investments | Non-controlled affiliate company investments | Non-controlled affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PlaymonsterGroupLLCMember | whfcl:PlayMonsterLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:PriorityFirstLienSecuredTermLoanMember | whfcl:PriorityFirstLienSecuredTermLoanMember | whfcl:PriorityFirstLienSecuredTermLoanMember | whfcl:PriorityFirstLienSecuredTermLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Products | Leisure Products | Leisure Products | Leisure Products | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.75% | 6.75% | 6.75% | 6.75% | |||
| PIK interest rate | 11.41% | 12.37% | 11.41% | 12.37% | |||
| Acquisition Date | Dec. 09, 2022 | Dec. 09, 2022 | |||||
| Maturity Date | Jun. 08, 2026 | Jun. 08, 2026 | Jun. 08, 2026 | Jun. 08, 2026 | |||
| Principal/Share Amount | $ 1,289,000 | $ 1,140,000 | |||||
| Investments, amortized cost | 1,275,000 | 1,118,000 | |||||
| Investments, fair value | $ 1,172,000 | $ 1,015,000 | 176,000 | ||||
| Percent of net assets | 0.40% | 0.30% | 0.40% | 0.30% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Potpourri Group, Inc First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PotpourriGroupIncMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Broadline Retail | Broadline Retail | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.50% | 1.50% | |||||
| Spread Above Index | 8.25% | 8.25% | |||||
| Interest Rate | 13.71% | 13.71% | |||||
| Acquisition Date | Jul. 03, 2019 | ||||||
| Maturity Date | Jul. 03, 2024 | Jul. 03, 2024 | |||||
| Principal/Share Amount | $ 13,799,000 | ||||||
| Investments, amortized cost | 13,767,000 | ||||||
| Investments, fair value | $ 13,799,000 | ||||||
| Percent of net assets | 4.40% | 4.40% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Poultry Holdings LLC., First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PoultryHoldingsLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Packaged Foods & Meats | Packaged Foods & Meats | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Acquisition Date | Oct. 21, 2019 | ||||||
| Maturity Date | Jun. 28, 2025 | Jun. 28, 2025 | |||||
| Principal/Share Amount | $ 6,939,000 | ||||||
| Investments, amortized cost | 6,904,000 | ||||||
| Investments, fair value | $ 6,904,000 | ||||||
| Investment, Identifier [Axis]: Power Service Group CR Acquisition Inc First Lien Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PowerServiceGroupCrAcquisitionIncMember | whfcl:PowerServiceGroupCrAcquisitionIncMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Heavy Electrical Equipment | Heavy Electrical Equipment | Heavy Electrical Equipment | Heavy Electrical Equipment | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.75% | 6.75% | 6.75% | 6.75% | |||
| Interest Rate | 11.23% | 12.25% | 11.23% | 12.25% | |||
| Acquisition Date | Jul. 11, 2022 | Jul. 11, 2022 | |||||
| Maturity Date | Jun. 25, 2026 | Jun. 25, 2026 | Jun. 25, 2026 | Jun. 25, 2026 | |||
| Principal/Share Amount | $ 1,340,000 | $ 1,356,000 | |||||
| Investments, amortized cost | 1,329,000 | 1,336,000 | |||||
| Investments, fair value | $ 1,354,000 | $ 1,353,000 | |||||
| Percent of net assets | 0.50% | 0.40% | 0.50% | 0.40% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Power Service Group CR Acquisition Inc First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PowerServiceGroupCrAcquisitionIncMember | whfcl:PowerServiceGroupCrAcquisitionIncMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Heavy Electrical Equipment | Heavy Electrical Equipment | Heavy Electrical Equipment | Heavy Electrical Equipment | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.75% | 6.75% | 6.75% | 6.75% | |||
| Interest Rate | 11.23% | 12.25% | 11.23% | 12.25% | |||
| Acquisition Date | Jun. 25, 2021 | Jun. 25, 2021 | |||||
| Maturity Date | Jun. 25, 2026 | Jun. 25, 2026 | Jun. 25, 2026 | Jun. 25, 2026 | |||
| Principal/Share Amount | $ 8,697,000 | $ 8,804,000 | |||||
| Investments, amortized cost | 8,642,000 | 8,712,000 | |||||
| Investments, fair value | $ 8,784,000 | $ 8,782,000 | |||||
| Percent of net assets | 3.10% | 2.80% | 3.10% | 2.80% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Pressurized Holdings, LLC Common Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled affiliate company investments | Non-controlled affiliate company investments | Non-controlled affiliate company investments | Non-controlled affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | Pressurized Holdings, LLC [Member] | Pressurized Holdings, LLC [Member] | |||||
| Investment, Type [Extensible Enumeration] | whfcl:CommonUnitsMember | whfcl:CommonUnitsMember | whfcl:CommonUnitsMember | whfcl:CommonUnitsMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Diversified Chemicals | Diversified Chemicals | Diversified Chemicals | Diversified Chemicals | |||
| Acquisition Date | Mar. 16, 2023 | Mar. 16, 2023 | |||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Pressurized Holdings, LLC Preferred Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled affiliate company investments | Non-controlled affiliate company investments | Non-controlled affiliate company investments | Non-controlled affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | Pressurized Holdings, LLC [Member] | Pressurized Holdings, LLC [Member] | |||||
| Investment, Type [Extensible Enumeration] | Preferred Units [Member] | Preferred Units [Member] | Preferred Units [Member] | Preferred Units [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Diversified Chemicals | Diversified Chemicals | Diversified Chemicals | Diversified Chemicals | |||
| Interest Rate | 14.00% | 14.00% | |||||
| PIK interest rate | 14.00% | 14.00% | 14.00% | 14.00% | |||
| Acquisition Date | Mar. 16, 2023 | Mar. 16, 2023 | |||||
| Investments, amortized cost | $ 4,537,000 | $ 4,537,000 | |||||
| Investments, fair value | $ 1,657,000 | $ 251,000 | |||||
| Percent of net assets | 0.60% | 0.10% | 0.60% | 0.10% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | true | true | true | true | |||
| Investment, Identifier [Axis]: Principal Lighting Group, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PrincipalLightingGroupLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Electronic Equipment & Instruments | Electronic Equipment & Instruments | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.25% | 5.25% | |||||
| Interest Rate | 9.81% | 9.81% | |||||
| Acquisition Date | Dec. 03, 2024 | ||||||
| Maturity Date | Nov. 04, 2030 | Nov. 04, 2030 | |||||
| Investment, Identifier [Axis]: Principal Lighting Group, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:PrincipalLightingGroupLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Electronic Equipment & Instruments | Electronic Equipment & Instruments | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.25% | 5.25% | |||||
| Interest Rate | 9.81% | 9.81% | |||||
| Acquisition Date | Dec. 03, 2024 | ||||||
| Maturity Date | Nov. 04, 2030 | Nov. 04, 2030 | |||||
| Principal/Share Amount | $ 3,531,000 | ||||||
| Investments, amortized cost | 3,479,000 | ||||||
| Investments, fair value | $ 3,479,000 | ||||||
| Investment, Identifier [Axis]: Project Castle, Inc First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ProjectCastleIncMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Industrial Machinery & Supplies & Components | Industrial Machinery & Supplies & Components | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 0.50% | 0.50% | |||||
| Spread Above Index | 5.50% | 5.50% | |||||
| Interest Rate | 10.89% | 10.89% | |||||
| Acquisition Date | Jun. 09, 2022 | ||||||
| Maturity Date | Jun. 01, 2029 | Jun. 01, 2029 | |||||
| Principal/Share Amount | $ 6,027,000 | ||||||
| Investments, amortized cost | 5,536,000 | ||||||
| Investments, fair value | $ 5,364,000 | ||||||
| Percent of net assets | 1.70% | 1.70% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Quest Events LLC, First Lien Secured Term Loan, 09/30/26 | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:QuestEventsLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Diversified Support Services | Diversified Support Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 2.00% | 2.00% | |||||
| Spread Above Index | 7.00% | 7.00% | |||||
| Interest Rate | 11.59% | 11.59% | |||||
| Acquisition Date | Jul. 19, 2019 | ||||||
| Maturity Date | Sep. 30, 2026 | Sep. 30, 2026 | |||||
| Principal/Share Amount | $ 11,592,000 | ||||||
| Investments, amortized cost | 11,563,000 | ||||||
| Investments, fair value | $ 11,592,000 | ||||||
| Investment, Identifier [Axis]: Quest Events, LLC Common Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:QuestEventsLLCMember | whfcl:QuestEventsLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:CommonUnitsMember | whfcl:CommonUnitsMember | whfcl:CommonUnitsMember | whfcl:CommonUnitsMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Diversified Support Services | Diversified Support Services | Diversified Support Services | Diversified Support Services | |||
| Acquisition Date | Dec. 28, 2018 | Dec. 28, 2018 | |||||
| Investment owned shares | shares | 333 | 317 | 333 | 317 | |||
| Investments, amortized cost | $ 376,000 | $ 360,000 | |||||
| Investments, fair value | $ 149,000 | $ 305,000 | |||||
| Percent of net assets | 0.10% | 0.10% | 0.10% | 0.10% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Quest Events, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:QuestEventsLLCMember | whfcl:QuestEventsLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Diversified Support Services | Diversified Support Services | Diversified Support Services | Diversified Support Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 2.00% | 2.00% | 2.00% | 2.00% | |||
| Spread Above Index | 7.00% | 7.25% | 7.00% | 7.25% | |||
| Interest Rate | 11.59% | 12.86% | 11.59% | 12.86% | |||
| Acquisition Date | Jul. 19, 2019 | Jul. 19, 2019 | |||||
| Maturity Date | Sep. 30, 2026 | Sep. 30, 2026 | Sep. 30, 2026 | Sep. 30, 2026 | |||
| Principal/Share Amount | $ 247,000 | $ 247,000 | |||||
| Investments, amortized cost | 246,000 | 246,000 | |||||
| Investments, fair value | $ 248,000 | $ 242,000 | |||||
| Investment, Identifier [Axis]: Quest Events, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:QuestEventsLLCMember | whfcl:QuestEventsLLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Diversified Support Services | Diversified Support Services | Diversified Support Services | Diversified Support Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | whfcl:SecuredOvernightFinancingRateSofrMember | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 2.00% | 1.00% | 2.00% | |||
| Spread Above Index | 6.50% | 7.25% | 6.50% | 7.25% | |||
| Interest Rate | 10.90% | 12.86% | 10.90% | 12.86% | |||
| Acquisition Date | Sep. 13, 2024 | Jul. 19, 2019 | |||||
| Maturity Date | Sep. 30, 2026 | Sep. 30, 2026 | Sep. 30, 2026 | Sep. 30, 2026 | |||
| Principal/Share Amount | $ 480,000 | $ 11,709,000 | |||||
| Investments, amortized cost | 472,000 | 11,663,000 | |||||
| Investments, fair value | $ 473,000 | $ 11,557,000 | |||||
| Percent of net assets | 0.20% | 0.20% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: RCKC Acquisitions LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:RCKCAcquisitionsLLCMember | whfcl:RCKCAcquisitionsLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 5.25% | 6.00% | 5.25% | 6.00% | |||
| Interest Rate | 9.99% | 11.53% | 9.99% | 11.53% | |||
| Acquisition Date | Jan. 27, 2021 | Jan. 27, 2021 | |||||
| Maturity Date | Jan. 02, 2029 | Dec. 31, 2026 | Jan. 02, 2029 | Dec. 31, 2026 | |||
| Principal/Share Amount | $ 2,946,000 | $ 2,976,000 | |||||
| Investments, amortized cost | 2,922,000 | 2,945,000 | |||||
| Investments, fair value | $ 2,946,000 | $ 2,965,000 | |||||
| Investment, Identifier [Axis]: RCKC Acquisitions LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:RCKCAcquisitionsLLCMember | whfcl:RCKCAcquisitionsLLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 5.25% | 6.00% | 5.25% | 6.00% | |||
| Interest Rate | 9.73% | 11.50% | 9.73% | 11.50% | |||
| Acquisition Date | Jan. 27, 2021 | Jan. 27, 2021 | |||||
| Maturity Date | Jan. 02, 2029 | Dec. 31, 2026 | Jan. 02, 2029 | Dec. 31, 2026 | |||
| Principal/Share Amount | $ 10,923,000 | $ 11,036,000 | |||||
| Investments, amortized cost | 10,839,000 | 10,925,000 | |||||
| Investments, fair value | $ 10,923,000 | $ 10,993,000 | |||||
| Investment, Identifier [Axis]: RCKC Acquisitions LLC, First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:RCKCAcquisitionsLLCMember | whfcl:RCKCAcquisitionsLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 5.25% | 6.00% | 5.25% | 6.00% | |||
| Interest Rate | 9.99% | 11.58% | 9.99% | 11.58% | |||
| Acquisition Date | Jan. 27, 2021 | Jan. 27, 2021 | |||||
| Maturity Date | Jan. 02, 2029 | Dec. 31, 2026 | Jan. 02, 2029 | Dec. 31, 2026 | |||
| Principal/Share Amount | $ 107,000 | ||||||
| Investments, amortized cost | 106,000 | ||||||
| Investments, fair value | $ 11,000 | $ 114,000 | |||||
| Investment, Identifier [Axis]: RLJ Pro-Vac, Inc. First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:RLJPro-VacInc.Member | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Environmental & Facilities Services | Environmental & Facilities Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.25% | 6.25% | |||||
| Interest Rate | 10.71% | 10.71% | |||||
| Acquisition Date | Jan. 23, 2024 | ||||||
| Maturity Date | Dec. 31, 2026 | Dec. 31, 2026 | |||||
| Principal/Share Amount | $ 6,659,000 | ||||||
| Investments, amortized cost | 6,566,000 | ||||||
| Investments, fair value | $ 6,637,000 | ||||||
| Investment, Identifier [Axis]: Ribbon Communications Operating Company, Inc. (d/b/a Ribbon Communications Inc.) First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Ribbon Communications Operating Company, Inc. [Member] | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Systems Software | Systems Software | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.25% | 6.25% | |||||
| Interest Rate | 10.59% | 10.59% | |||||
| Acquisition Date | Jun. 21, 2024 | ||||||
| Maturity Date | Jun. 21, 2029 | Jun. 21, 2029 | |||||
| Investments, fair value | $ 9,000 | ||||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Ribbon Communications Operating Company, Inc. (d/b/a Ribbon Communications Inc.) First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Ribbon Communications Operating Company, Inc. [Member] | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Systems Software | Systems Software | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.25% | 6.25% | |||||
| Interest Rate | 10.59% | 10.59% | |||||
| Acquisition Date | Jun. 21, 2024 | ||||||
| Maturity Date | Jun. 21, 2029 | Jun. 21, 2029 | |||||
| Principal/Share Amount | $ 8,756,000 | ||||||
| Investments, amortized cost | 8,600,000 | ||||||
| Investments, fair value | $ 8,692,000 | ||||||
| Percent of net assets | 3.00% | 3.00% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Ross-Simons Topco, LP Preferred Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:Ross-SimonsTopcoLPMember | whfcl:Ross-SimonsTopcoLPMember | |||||
| Investment, Type [Extensible Enumeration] | Preferred Units [Member] | Preferred Units [Member] | Preferred Units [Member] | Preferred Units [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Broadline Retail | Broadline Retail | Broadline Retail | Broadline Retail | |||
| Interest Rate | 8.00% | 8.00% | 8.00% | 8.00% | |||
| PIK interest rate | 8.00% | 8.00% | 8.00% | 8.00% | |||
| Acquisition Date | Dec. 04, 2020 | Dec. 04, 2020 | |||||
| Investment owned shares | shares | 600 | 600 | 600 | 600 | |||
| Investments, amortized cost | $ 514,000 | $ 514,000 | |||||
| Investments, fair value | $ 756,000 | $ 832,000 | |||||
| Percent of net assets | 0.30% | 0.30% | 0.30% | 0.30% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: SFS Global Holding Company Warrants | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SFSGlobalHoldingCompanyMember | ||||||
| Investment, Type [Extensible Enumeration] | Warrant [Member] | Warrant [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Other Diversified Financial Services | Other Diversified Financial Services | |||||
| Acquisition Date | Jun. 28, 2018 | ||||||
| Maturity Date | Dec. 28, 2025 | Dec. 28, 2025 | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Salon Republic Holdings, LLC (d/b/a Salon Republic, LLC) First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SalonRepublicHoldingsLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Specialized Consumer Services | Specialized Consumer Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 8.00% | 8.00% | |||||
| Interest Rate | 12.46% | 12.46% | |||||
| Acquisition Date | Dec. 02, 2022 | ||||||
| Maturity Date | Dec. 02, 2027 | Dec. 02, 2027 | |||||
| Principal/Share Amount | $ 1,669,000 | ||||||
| Investments, amortized cost | 1,641,000 | ||||||
| Investments, fair value | $ 1,672,000 | ||||||
| Percent of net assets | 0.60% | 0.60% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Salon Republic Holdings, LLC (d/b/a Salon Republic, LLC) First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SalonRepublicHoldingsLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Specialized Consumer Services | Specialized Consumer Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 8.00% | 8.00% | |||||
| Interest Rate | 12.46% | 12.46% | |||||
| Acquisition Date | Dec. 02, 2022 | ||||||
| Maturity Date | Dec. 02, 2027 | Dec. 02, 2027 | |||||
| Investments, fair value | $ 13,000 | ||||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Salon Republic Holdings, LLC (d/b/a Salon Republic, LLC) First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SalonRepublicHoldingsLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Specialized Consumer Services | Specialized Consumer Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 8.00% | 8.00% | |||||
| Interest Rate | 12.46% | 12.46% | |||||
| Acquisition Date | Dec. 02, 2022 | ||||||
| Maturity Date | Dec. 02, 2027 | Dec. 02, 2027 | |||||
| Principal/Share Amount | $ 5,076,000 | ||||||
| Investments, amortized cost | 4,988,000 | ||||||
| Investments, fair value | $ 5,063,000 | ||||||
| Percent of net assets | 1.80% | 1.80% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Salon Republic Holdings, LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SalonRepublicHoldingsLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Research & Consulting Services | Research & Consulting Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 7.50% | 7.50% | |||||
| Interest Rate | 12.96% | 12.96% | |||||
| Acquisition Date | Dec. 02, 2022 | ||||||
| Maturity Date | Dec. 02, 2027 | Dec. 02, 2027 | |||||
| Principal/Share Amount | $ 741,000 | ||||||
| Investments, amortized cost | 729,000 | ||||||
| Investments, fair value | $ 745,000 | ||||||
| Percent of net assets | 0.20% | 0.20% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Salon Republic Holdings, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SalonRepublicHoldingsLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Research & Consulting Services | Research & Consulting Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Spread Above Index | 7.50% | 7.50% | |||||
| Interest Rate | 12.96% | 12.96% | |||||
| Acquisition Date | Dec. 02, 2022 | ||||||
| Maturity Date | Dec. 02, 2027 | Dec. 02, 2027 | |||||
| Principal/Share Amount | $ 251,000 | ||||||
| Investments, amortized cost | 245,000 | ||||||
| Investments, fair value | $ 258,000 | ||||||
| Percent of net assets | 0.10% | 0.10% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Salon Republic Holdings, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SalonRepublicHoldingsLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Research & Consulting Services | Research & Consulting Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 7.50% | 7.50% | |||||
| Interest Rate | 12.96% | 12.96% | |||||
| Acquisition Date | Dec. 02, 2022 | ||||||
| Maturity Date | Dec. 02, 2027 | Dec. 02, 2027 | |||||
| Principal/Share Amount | $ 5,121,000 | ||||||
| Investments, amortized cost | 5,001,000 | ||||||
| Investments, fair value | $ 5,077,000 | ||||||
| Percent of net assets | 1.60% | 1.60% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Salon Republic Investments LLC Common Stock | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SalonRepublicInvestmentsLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | Common Stock [Member] | Common Stock [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Specialized Consumer Services | Specialized Consumer Services | |||||
| Acquisition Date | Dec. 02, 2022 | ||||||
| Investment owned shares | shares | 400 | 400 | |||||
| Investments, amortized cost | $ 400,000 | ||||||
| Investments, fair value | $ 241,000 | ||||||
| Percent of net assets | 0.10% | 0.10% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Salon Republic Investments LLC Preferred Stock | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SalonRepublicInvestmentsLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | us-gaap:PreferredStockMember | us-gaap:PreferredStockMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Specialized Consumer Services | Specialized Consumer Services | |||||
| PIK interest rate | 8.00% | 8.00% | |||||
| Acquisition Date | Dec. 02, 2022 | ||||||
| Investment owned shares | shares | 200 | 200 | |||||
| Investments, amortized cost | $ 200,000 | ||||||
| Investments, fair value | $ 218,000 | ||||||
| Percent of net assets | 0.10% | 0.10% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | true | true | |||||
| Investment, Identifier [Axis]: Salon Republic Investments LLC, Common Stock | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SalonRepublicInvestmentsLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | Common Stock [Member] | Common Stock [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Real Estate Operating Companies | Real Estate Operating Companies | |||||
| Acquisition Date | Dec. 02, 2022 | ||||||
| Investment owned shares | shares | 400 | 400 | |||||
| Investments, amortized cost | $ 400,000 | ||||||
| Investments, fair value | $ 132,000 | ||||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Salon Republic Investments LLC, Preferred Stock | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SalonRepublicInvestmentsLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | us-gaap:PreferredStockMember | us-gaap:PreferredStockMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Real Estate Operating Companies | Real Estate Operating Companies | |||||
| Interest Rate | 8.00% | 8.00% | |||||
| PIK interest rate | 8.00% | 8.00% | |||||
| Acquisition Date | Dec. 02, 2022 | ||||||
| Investment owned shares | shares | 200 | 200 | |||||
| Investments, amortized cost | $ 200,000 | ||||||
| Investments, fair value | $ 242,000 | ||||||
| Percent of net assets | 0.10% | 0.10% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | true | true | |||||
| Investment, Identifier [Axis]: Sigue Corporation Warrants | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SigueCorporationMember | ||||||
| Investment, Type [Extensible Enumeration] | Warrant [Member] | Warrant [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Other Diversified Financial Services | Other Diversified Financial Services | |||||
| Acquisition Date | Jun. 28, 2018 | ||||||
| Maturity Date | Dec. 28, 2025 | Dec. 28, 2025 | |||||
| Investment owned shares | shares | 22 | 22 | |||||
| Investments, amortized cost | $ 2,890,000 | ||||||
| Investments, fair value | $ 3,472,000 | ||||||
| Percent of net assets | 1.10% | 1.10% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Sleep OpCo LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SleepOpCoLLCMember | whfcl:SleepOpCoLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Home Furnishings | Home Furnishings | Home Furnishings | Home Furnishings | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.50% | 6.50% | 6.50% | 6.50% | |||
| Interest Rate | 11.28% | 12.07% | 11.28% | 12.07% | |||
| Acquisition Date | Oct. 12, 2021 | Oct. 12, 2021 | |||||
| Maturity Date | Oct. 12, 2026 | Oct. 12, 2026 | Oct. 12, 2026 | Oct. 12, 2026 | |||
| Investments, fair value | $ 5,000 | $ 3,000 | |||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Sleep OpCo LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SleepOpCoLLCMember | whfcl:SleepOpCoLLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Home Furnishings | Home Furnishings | Home Furnishings | Home Furnishings | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.50% | 6.50% | 6.50% | 6.50% | |||
| Interest Rate | 11.28% | 12.07% | 11.28% | 12.07% | |||
| Acquisition Date | Oct. 12, 2021 | Oct. 12, 2021 | |||||
| Maturity Date | Oct. 12, 2026 | Oct. 12, 2026 | Oct. 12, 2026 | Oct. 12, 2026 | |||
| Principal/Share Amount | $ 22,590,000 | $ 20,616,000 | |||||
| Investments, amortized cost | 22,401,000 | 20,385,000 | |||||
| Investments, fair value | $ 22,441,000 | $ 20,407,000 | |||||
| Percent of net assets | 7.80% | 6.40% | 7.80% | 6.40% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Smalto Inc, First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SmaltoInc.Member | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Household Appliances | Household Appliances | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:EuroInterbankOfferedRateMember | whfcl:EuroInterbankOfferedRateMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.00% | 6.00% | |||||
| Interest Rate | 8.86% | 8.86% | |||||
| Acquisition Date | May 04, 2022 | ||||||
| Maturity Date | Apr. 28, 2028 | Apr. 28, 2028 | |||||
| Principal/Share Amount | $ 6,423,000 | ||||||
| Investments, amortized cost | 6,682,000 | ||||||
| Investments, fair value | $ 6,654,000 | ||||||
| Investment, Identifier [Axis]: Smalto Inc, First Lien Secured Term Loan Interest Rate 10.18 | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SmaltoInc.Member | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Household Appliances | Household Appliances | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:EuroInterbankOfferedRateMember | whfcl:EuroInterbankOfferedRateMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.25% | 6.25% | |||||
| Interest Rate | 10.18% | 10.18% | |||||
| Acquisition Date | May 04, 2022 | ||||||
| Maturity Date | Apr. 28, 2028 | Apr. 28, 2028 | |||||
| Principal/Share Amount | $ 6,576,000 | ||||||
| Investments, amortized cost | 6,821,000 | ||||||
| Investments, fair value | $ 7,172,000 | ||||||
| Investment, Identifier [Axis]: Smalto Inc, First Lien Secured Term Loan Interest Rate 11.50 | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SmaltoInc.Member | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Household Appliances | Household Appliances | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.00% | 6.00% | |||||
| Interest Rate | 11.50% | 11.50% | |||||
| Acquisition Date | May 04, 2022 | ||||||
| Maturity Date | Apr. 28, 2028 | Apr. 28, 2028 | |||||
| Principal/Share Amount | $ 1,001,000 | ||||||
| Investments, amortized cost | 987,000 | ||||||
| Investments, fair value | $ 996,000 | ||||||
| Investment, Identifier [Axis]: Smalto Inc, First Lien Secured Term Loan One | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SmaltoInc.Member | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Household Appliances | Household Appliances | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.75% | 5.75% | |||||
| Interest Rate | 10.21% | 10.21% | |||||
| Acquisition Date | May 04, 2022 | ||||||
| Maturity Date | Apr. 28, 2028 | Apr. 28, 2028 | |||||
| Principal/Share Amount | $ 978,000 | ||||||
| Investments, amortized cost | 967,000 | ||||||
| Investments, fair value | $ 978,000 | ||||||
| Investment, Identifier [Axis]: Snap Fitness Holdings, Inc Class A Common Stock | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SnapFitnessHoldingsIncMember | whfcl:SnapFitnessHoldingsIncMember | |||||
| Investment, Type [Extensible Enumeration] | us-gaap:CommonClassAMember | us-gaap:CommonClassAMember | us-gaap:CommonClassAMember | us-gaap:CommonClassAMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Facilities | Leisure Facilities | Leisure Facilities | Leisure Facilities | |||
| Acquisition Date | Jun. 29, 2020 | Jun. 29, 2020 | |||||
| Investment owned shares | shares | 2 | 2 | 2 | 2 | |||
| Investments, amortized cost | $ 1,941,000 | $ 1,941,000 | |||||
| Investments, fair value | $ 173,000 | $ 130,000 | |||||
| Percent of net assets | 0.10% | 0.10% | |||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Snap Fitness Holdings, Inc First Lien Secured Term Loan C | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SnapFitnessHoldingsIncMember | whfcl:SnapFitnessHoldingsIncMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredTermLoanCMember | whfcl:FirstLienSecuredTermLoanCMember | whfcl:FirstLienSecuredTermLoanCMember | whfcl:FirstLienSecuredTermLoanCMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Facilities | Leisure Facilities | Leisure Facilities | Leisure Facilities | |||
| Interest Rate | 9.50% | 9.50% | 9.50% | 9.50% | |||
| PIK interest rate | 9.50% | 9.50% | |||||
| Acquisition Date | Jun. 29, 2020 | Jun. 29, 2020 | |||||
| Principal/Share Amount | $ 1,822,000 | $ 1,657,000 | |||||
| Investments, amortized cost | 1,819,000 | 1,654,000 | |||||
| Investments, fair value | $ 1,790,000 | $ 1,623,000 | |||||
| Percent of net assets | 0.60% | 0.50% | 0.60% | 0.50% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Snap Fitness Holdings, Inc Warrants | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SnapFitnessHoldingsIncMember | whfcl:SnapFitnessHoldingsIncMember | |||||
| Investment, Type [Extensible Enumeration] | Warrant [Member] | Warrant [Member] | Warrant [Member] | Warrant [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Facilities | Leisure Facilities | Leisure Facilities | Leisure Facilities | |||
| Acquisition Date | Jun. 29, 2020 | Jun. 29, 2020 | |||||
| Investment owned shares | shares | 1 | 1 | 1 | 1 | |||
| Investments, amortized cost | $ 793,000 | $ 793,000 | |||||
| Investments, fair value | $ 70,000 | $ 53,000 | |||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Solar Holdings Bidco Limited First Lien Secured Term Loan CDOR | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SolarHoldingsBidcoLimitedMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Research & Consulting Services | Research & Consulting Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:CanadianDollarOfferedRateMember | whfcl:CanadianDollarOfferedRateMember | |||||
| Floor | 0.50% | 0.50% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 11.94% | 11.94% | |||||
| Acquisition Date | Mar. 23, 2023 | ||||||
| Maturity Date | Sep. 28, 2029 | Sep. 28, 2029 | |||||
| Principal/Share Amount | $ 3,873,000 | ||||||
| Investments, amortized cost | 2,759,000 | ||||||
| Investments, fair value | $ 2,892,000 | ||||||
| Investment, Identifier [Axis]: Solar Holdings Bidco Limited First Lien Secured Term Loan SOFR | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SolarHoldingsBidcoLimitedMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Research & Consulting Services | Research & Consulting Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 0.50% | 0.50% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 11.85% | 11.85% | |||||
| Acquisition Date | Mar. 23, 2023 | ||||||
| Maturity Date | Sep. 28, 2029 | Sep. 28, 2029 | |||||
| Principal/Share Amount | $ 2,807,000 | ||||||
| Investments, amortized cost | 2,744,000 | ||||||
| Investments, fair value | $ 2,786,000 | ||||||
| Investment, Identifier [Axis]: Solar Holdings Bidco Limited First Lien Secured Term Loan SONIA | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SolarHoldingsBidcoLimitedMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Research & Consulting Services | Research & Consulting Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Sterling Overnight Index Average [Member] | Sterling Overnight Index Average [Member] | |||||
| Floor | 0.00% | 0.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 11.72% | 11.72% | |||||
| Acquisition Date | Mar. 23, 2023 | ||||||
| Maturity Date | Sep. 28, 2029 | Sep. 28, 2029 | |||||
| Principal/Share Amount | $ 171,000 | ||||||
| Investments, amortized cost | 205,000 | ||||||
| Investments, fair value | $ 217,000 | ||||||
| Investment, Identifier [Axis]: Solar Holdings Bidco Limited, First Lien Secured Delayed Draw Loan CDOR | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SolarHoldingsBidcoLimitedMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Research & Consulting Services | Research & Consulting Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:CanadianDollarOfferedRateMember | whfcl:CanadianDollarOfferedRateMember | |||||
| Floor | 0.50% | 0.50% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 12.08% | 12.08% | |||||
| Acquisition Date | Mar. 23, 2023 | ||||||
| Maturity Date | Sep. 28, 2029 | Sep. 28, 2029 | |||||
| Principal/Share Amount | $ 458,000 | ||||||
| Investments, amortized cost | 324,000 | ||||||
| Investments, fair value | $ 342,000 | ||||||
| Investment, Identifier [Axis]: Solar Holdings Bidco Limited, First Lien Secured Delayed Draw Loan SOFR | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SolarHoldingsBidcoLimitedMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Research & Consulting Services | Research & Consulting Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 0.50% | 0.50% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 11.85% | 11.85% | |||||
| Acquisition Date | Mar. 23, 2023 | ||||||
| Maturity Date | Sep. 28, 2029 | Sep. 28, 2029 | |||||
| Principal/Share Amount | $ 368,000 | ||||||
| Investments, amortized cost | 360,000 | ||||||
| Investments, fair value | $ 366,000 | ||||||
| Investment, Identifier [Axis]: Solar Holdings Bidco Limited, First Lien Secured Delayed Draw Loan SONIA | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SolarHoldingsBidcoLimitedMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Research & Consulting Services | Research & Consulting Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Sterling Overnight Index Average [Member] | Sterling Overnight Index Average [Member] | |||||
| Floor | 0.00% | 0.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 11.71% | 11.71% | |||||
| Acquisition Date | Mar. 23, 2023 | ||||||
| Maturity Date | Sep. 28, 2029 | Sep. 28, 2029 | |||||
| Principal/Share Amount | $ 723,000 | ||||||
| Investments, amortized cost | 882,000 | ||||||
| Investments, fair value | $ 984,000 | ||||||
| Investment, Identifier [Axis]: Source Code Holdings, LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SourceCodeHoldingsLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Technology Hardware, Storage & Peripherals | Technology Hardware, Storage & Peripherals | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 11.96% | 11.96% | |||||
| Acquisition Date | Aug. 10, 2021 | ||||||
| Maturity Date | Jul. 30, 2027 | Jul. 30, 2027 | |||||
| Principal/Share Amount | $ 4,088,000 | ||||||
| Investments, amortized cost | 4,039,000 | ||||||
| Investments, fair value | $ 4,047,000 | ||||||
| Investment, Identifier [Axis]: Source Code Holdings, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SourceCodeHoldingsLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Technology Hardware, Storage & Peripherals | Technology Hardware, Storage & Peripherals | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 11.96% | 11.96% | |||||
| Acquisition Date | Aug. 10, 2021 | ||||||
| Maturity Date | Jul. 30, 2027 | Jul. 30, 2027 | |||||
| Principal/Share Amount | $ 14,952,000 | ||||||
| Investments, amortized cost | 14,772,000 | ||||||
| Investments, fair value | $ 14,806,000 | ||||||
| Investment, Identifier [Axis]: Source Code Holdings, LLC., First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SourceCodeHoldingsLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Technology Hardware, Storage & Peripherals | Technology Hardware, Storage & Peripherals | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 10.96% | 10.96% | |||||
| Acquisition Date | Aug. 10, 2021 | ||||||
| Maturity Date | Jul. 30, 2027 | Jul. 30, 2027 | |||||
| Principal/Share Amount | $ 3,872,000 | ||||||
| Investments, amortized cost | 3,839,000 | ||||||
| Investments, fair value | $ 3,854,000 | ||||||
| Investment, Identifier [Axis]: Source Code Holdings, LLC., First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SourceCodeHoldingsLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Technology Hardware, Storage & Peripherals | Technology Hardware, Storage & Peripherals | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 10.96% | 10.96% | |||||
| Acquisition Date | Aug. 10, 2021 | ||||||
| Maturity Date | Jul. 30, 2027 | Jul. 30, 2027 | |||||
| Principal/Share Amount | $ 14,162,000 | ||||||
| Investments, amortized cost | 14,041,000 | ||||||
| Investments, fair value | $ 14,095,000 | ||||||
| Investment, Identifier [Axis]: Sterling Pure Blocker, LLC (d/b/a Banner Industries, Inc.) Class B Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SterlingPureBlockerLlcMember | whfcl:SterlingPureBlockerLlcMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:ClassBUnitsMember | whfcl:ClassBUnitsMember | whfcl:ClassBUnitsMember | whfcl:ClassBUnitsMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Construction & Engineering | Construction & Engineering | Construction & Engineering | Construction & Engineering | |||
| Acquisition Date | Dec. 01, 2023 | Dec. 01, 2023 | |||||
| Investment owned shares | shares | 404 | 404 | 404 | 404 | |||
| Investments, amortized cost | $ 404,000 | $ 404,000 | |||||
| Investments, fair value | $ 388,000 | $ 404,000 | |||||
| Percent of net assets | 0.10% | 0.10% | 0.10% | 0.10% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: StoicLane MidCo, LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:StoiclaneMidcoLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Real Estate Services [Member] | Real Estate Services [Member] | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 7.50% | 7.50% | |||||
| Interest Rate | 13.00% | 13.00% | |||||
| Acquisition Date | Nov. 04, 2022 | ||||||
| Maturity Date | Nov. 04, 2027 | Nov. 04, 2027 | |||||
| Principal/Share Amount | $ 5,545,000 | ||||||
| Investments, amortized cost | 5,466,000 | ||||||
| Investments, fair value | $ 5,633,000 | ||||||
| Percent of net assets | 1.80% | 1.80% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: StoicLane MidCo, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:StoiclaneMidcoLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Real Estate Services [Member] | Real Estate Services [Member] | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 7.50% | 7.50% | |||||
| Interest Rate | 13.00% | 13.00% | |||||
| Acquisition Date | Nov. 04, 2022 | ||||||
| Maturity Date | Nov. 04, 2027 | Nov. 04, 2027 | |||||
| Principal/Share Amount | $ 4,606,000 | ||||||
| Investments, amortized cost | 4,518,000 | ||||||
| Investments, fair value | $ 4,606,000 | ||||||
| Percent of net assets | 1.50% | 1.50% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Sunless, Inc. First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SunlessInc.Member | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Personal Products | Personal Products | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.75% | 6.75% | |||||
| Interest Rate | 12.21% | 12.21% | |||||
| Acquisition Date | Oct. 21, 2019 | ||||||
| Maturity Date | Aug. 13, 2025 | Aug. 13, 2025 | |||||
| Principal/Share Amount | $ 488,000 | ||||||
| Investments, amortized cost | 485,000 | ||||||
| Investments, fair value | $ 484,000 | ||||||
| Investment, Identifier [Axis]: Sunless, Inc. First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:SunlessInc.Member | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Personal Products | Personal Products | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.75% | 6.75% | |||||
| Interest Rate | 12.20% | 12.20% | |||||
| Acquisition Date | Oct. 21, 2019 | ||||||
| Maturity Date | Aug. 13, 2025 | Aug. 13, 2025 | |||||
| Principal/Share Amount | $ 5,507,000 | ||||||
| Investments, amortized cost | 5,459,000 | ||||||
| Investments, fair value | $ 5,473,000 | ||||||
| Investment, Identifier [Axis]: Surge Amuze Holdings Inc. First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Surge Amuze Holdings Inc [Member] | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Products | Leisure Products | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.00% | 6.00% | |||||
| Interest Rate | 10.46% | 10.46% | |||||
| Acquisition Date | Sep. 06, 2024 | ||||||
| Maturity Date | Sep. 06, 2029 | Sep. 06, 2029 | |||||
| Principal/Share Amount | $ 584,000 | ||||||
| Investments, amortized cost | 573,000 | ||||||
| Investments, fair value | $ 577,000 | ||||||
| Percent of net assets | 0.20% | 0.20% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Surge Amuze Holdings Inc. First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Surge Amuze Holdings Inc [Member] | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Products | Leisure Products | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | us-gaap:PrimeRateMember | us-gaap:PrimeRateMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.00% | 5.00% | |||||
| Interest Rate | 12.50% | 12.50% | |||||
| Acquisition Date | Sep. 06, 2024 | ||||||
| Maturity Date | Sep. 06, 2029 | Sep. 06, 2029 | |||||
| Principal/Share Amount | $ 585,000 | ||||||
| Investments, amortized cost | 574,000 | ||||||
| Investments, fair value | $ 576,000 | ||||||
| Percent of net assets | 0.20% | 0.20% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Surge Amuze Holdings Inc. First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Surge Amuze Holdings Inc [Member] | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Leisure Products | Leisure Products | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.00% | 6.00% | |||||
| Interest Rate | 10.44% | 10.44% | |||||
| Acquisition Date | Sep. 06, 2024 | ||||||
| Maturity Date | Sep. 06, 2029 | Sep. 06, 2029 | |||||
| Principal/Share Amount | $ 5,737,000 | ||||||
| Investments, amortized cost | 5,629,000 | ||||||
| Investments, fair value | $ 5,643,000 | ||||||
| Percent of net assets | 2.00% | 2.00% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: TOT Group, Inc. (d/b/a Netevia Group LLC) First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Tot Group, Inc. [Member] | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Transaction & Payment Processing Services | Transaction & Payment Processing Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 7.50% | 7.50% | |||||
| Interest Rate | 11.83% | 11.83% | |||||
| Acquisition Date | Jun. 28, 2024 | ||||||
| Maturity Date | Jun. 28, 2029 | Jun. 28, 2029 | |||||
| Investments, fair value | $ (1,000) | ||||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: TOT Group, Inc. (d/b/a Netevia Group LLC) First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Tot Group, Inc. [Member] | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Transaction & Payment Processing Services | Transaction & Payment Processing Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 7.50% | 7.50% | |||||
| Interest Rate | 11.83% | 11.83% | |||||
| Acquisition Date | Jun. 28, 2024 | ||||||
| Maturity Date | Jun. 28, 2029 | Jun. 28, 2029 | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: TOT Group, Inc. (d/b/a Netevia Group LLC) First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Tot Group, Inc. [Member] | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Transaction & Payment Processing Services | Transaction & Payment Processing Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 7.50% | 7.50% | |||||
| Interest Rate | 11.83% | 11.83% | |||||
| Acquisition Date | Jun. 28, 2024 | ||||||
| Maturity Date | Jun. 28, 2029 | Jun. 28, 2029 | |||||
| Principal/Share Amount | $ 8,239,000 | ||||||
| Investments, amortized cost | 8,074,000 | ||||||
| Investments, fair value | $ 8,067,000 | ||||||
| Percent of net assets | 2.80% | 2.80% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: TOUR Intermediate Holdings, LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:TOURIntermediateHoldingsLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Investment Banking & Brokerage | Investment Banking & Brokerage | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 11.96% | 11.96% | |||||
| Acquisition Date | May 19, 2020 | ||||||
| Maturity Date | May 15, 2025 | May 15, 2025 | |||||
| Principal/Share Amount | $ 2,320,000 | ||||||
| Investments, amortized cost | 2,315,000 | ||||||
| Investments, fair value | $ 2,320,000 | ||||||
| Investment, Identifier [Axis]: TOUR Intermediate Holdings, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:TOURIntermediateHoldingsLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Investment Banking & Brokerage | Investment Banking & Brokerage | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 11.96% | 11.96% | |||||
| Acquisition Date | May 19, 2020 | ||||||
| Maturity Date | May 15, 2025 | May 15, 2025 | |||||
| Principal/Share Amount | $ 2,657,000 | ||||||
| Investments, amortized cost | 2,643,000 | ||||||
| Investments, fair value | $ 2,657,000 | ||||||
| Investment, Identifier [Axis]: TableTrust Brands LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:TabletrustBrandsLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.75% | 5.75% | |||||
| Interest Rate | 10.22% | 10.22% | |||||
| Acquisition Date | Dec. 24, 2024 | ||||||
| Maturity Date | Jun. 28, 2028 | Jun. 28, 2028 | |||||
| Principal/Share Amount | $ 2,505,000 | ||||||
| Investments, amortized cost | 2,468,000 | ||||||
| Investments, fair value | $ 2,468,000 | ||||||
| Investment, Identifier [Axis]: Team Car Care Holdings, First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:TeamCarCareHoldingsLLCMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Automotive Retail | Automotive Retail | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Base Rate [Member] | Base Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 7.48% | 7.48% | |||||
| Interest Rate | 13.09% | 13.09% | |||||
| Acquisition Date | Feb. 16, 2018 | ||||||
| Maturity Date | Dec. 31, 2024 | Dec. 31, 2024 | |||||
| Principal/Share Amount | $ 12,407,000 | ||||||
| Investments, amortized cost | 12,391,000 | ||||||
| Investments, fair value | $ 12,407,000 | ||||||
| Percent of net assets | 3.90% | 3.90% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Telestream Holdings Corporation First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | Telestream Holdings Corporation [Member] | Telestream Holdings Corporation [Member] | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Technology Hardware, Storage & Peripherals | Technology Hardware, Storage & Peripherals | Technology Hardware, Storage & Peripherals | Technology Hardware, Storage & Peripherals | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 9.75% | 11.75% | 9.75% | 11.75% | |||
| Interest Rate | 17.21% | 17.21% | |||||
| PIK interest rate | 14.21% | 14.21% | |||||
| Acquisition Date | Oct. 15, 2020 | Oct. 15, 2020 | |||||
| Maturity Date | Oct. 15, 2025 | Oct. 15, 2025 | Oct. 15, 2025 | Oct. 15, 2025 | |||
| Principal/Share Amount | $ 1,116,000 | $ 1,242,000 | |||||
| Investments, amortized cost | 1,051,000 | 1,228,000 | |||||
| Investments, fair value | $ 1,009,000 | $ 1,223,000 | |||||
| Percent of net assets | 0.40% | 0.40% | 0.40% | 0.40% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Telestream Holdings Corporation First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | Telestream Holdings Corporation [Member] | Telestream Holdings Corporation [Member] | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Technology Hardware, Storage & Peripherals | Technology Hardware, Storage & Peripherals | Technology Hardware, Storage & Peripherals | Technology Hardware, Storage & Peripherals | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 9.75% | 11.75% | 9.75% | 11.75% | |||
| Interest Rate | 17.28% | 17.28% | |||||
| PIK interest rate | 14.21% | 14.21% | |||||
| Acquisition Date | Oct. 15, 2020 | Oct. 15, 2020 | |||||
| Maturity Date | Oct. 15, 2025 | Oct. 15, 2025 | Oct. 15, 2025 | Oct. 15, 2025 | |||
| Principal/Share Amount | $ 18,547,000 | $ 15,763,000 | |||||
| Investments, amortized cost | 17,496,000 | 15,580,000 | |||||
| Investments, fair value | $ 17,063,000 | $ 15,522,000 | |||||
| Percent of net assets | 5.90% | 4.90% | 5.90% | 4.90% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: The Kyjen Company, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:TheKyjenCompanyLLCMember | whfcl:TheKyjenCompanyLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Household Products | Household Products | Household Products | Household Products | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.50% | 7.50% | 6.50% | 7.50% | |||
| Interest Rate | 10.97% | 13.21% | 10.97% | 13.21% | |||
| Cash interest rate | 10.22% | 12.21% | 10.22% | 12.21% | |||
| PIK interest rate | 0.75% | 1.00% | 0.75% | 1.00% | |||
| Acquisition Date | Apr. 05, 2021 | Apr. 05, 2021 | |||||
| Maturity Date | Apr. 05, 2026 | Apr. 05, 2026 | Apr. 05, 2026 | Apr. 05, 2026 | |||
| Principal/Share Amount | $ 798,000 | ||||||
| Investments, amortized cost | 795,000 | ||||||
| Investments, fair value | $ 761,000 | $ (31,000) | |||||
| Percent of net assets | 0.30% | 0.30% | |||||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: The Kyjen Company, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:TheKyjenCompanyLLCMember | whfcl:TheKyjenCompanyLLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Household Products | Household Products | Household Products | Household Products | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 7.25% | 7.50% | 7.25% | 7.50% | |||
| Interest Rate | 12.05% | 13.21% | 12.05% | 13.21% | |||
| Cash interest rate | 11.30% | 12.21% | 11.30% | 12.21% | |||
| PIK interest rate | 0.75% | 1.00% | 0.75% | 1.00% | |||
| Acquisition Date | Apr. 05, 2021 | Apr. 05, 2021 | |||||
| Maturity Date | Apr. 05, 2026 | Apr. 05, 2026 | Apr. 05, 2026 | Apr. 05, 2026 | |||
| Principal/Share Amount | $ 11,350,000 | $ 11,358,000 | |||||
| Investments, amortized cost | 11,309,000 | 11,282,000 | |||||
| Investments, fair value | $ 10,895,000 | $ 10,904,000 | |||||
| Percent of net assets | 3.80% | 3.40% | 3.80% | 3.40% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Token Buyer, Inc First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:TokenBuyerIncMember | whfcl:TokenBuyerIncMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Household Appliances | Household Appliances | Household Appliances | Household Appliances | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 0.50% | 0.50% | 0.50% | 0.50% | |||
| Spread Above Index | 6.00% | 6.00% | 6.00% | 6.00% | |||
| Interest Rate | 10.74% | 11.53% | 10.74% | 11.53% | |||
| Acquisition Date | May 26, 2022 | May 26, 2022 | |||||
| Maturity Date | May 31, 2029 | May 31, 2029 | May 31, 2029 | May 31, 2029 | |||
| Principal/Share Amount | $ 7,070,000 | $ 7,142,000 | |||||
| Investments, amortized cost | 6,709,000 | 6,695,000 | |||||
| Investments, fair value | $ 5,658,000 | $ 5,966,000 | |||||
| Percent of net assets | 2.00% | 1.90% | 2.00% | 1.90% | |||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Trailhead Media LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Trailhead Media L L C [Member] | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Advertising | Advertising | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.50% | 5.50% | |||||
| Interest Rate | 9.82% | 9.82% | |||||
| Cash interest rate | 9.07% | 9.07% | |||||
| PIK interest rate | 0.75% | 0.75% | |||||
| Acquisition Date | Dec. 30, 2024 | ||||||
| Maturity Date | Dec. 28, 2029 | Dec. 28, 2029 | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Trailhead Media LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Trailhead Media L L C [Member] | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Advertising | Advertising | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.50% | 5.50% | |||||
| Interest Rate | 9.82% | 9.82% | |||||
| Cash interest rate | 9.07% | 9.07% | |||||
| PIK interest rate | 0.75% | 0.75% | |||||
| Acquisition Date | Dec. 30, 2024 | ||||||
| Maturity Date | Dec. 28, 2029 | Dec. 28, 2029 | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Trailhead Media LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | Trailhead Media L L C [Member] | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Advertising | Advertising | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.50% | 5.50% | |||||
| Interest Rate | 9.82% | 9.82% | |||||
| Cash interest rate | 9.07% | 9.07% | |||||
| PIK interest rate | 0.75% | 0.75% | |||||
| Acquisition Date | Dec. 30, 2024 | ||||||
| Maturity Date | Dec. 28, 2029 | Dec. 28, 2029 | |||||
| Principal/Share Amount | $ 6,648,000 | ||||||
| Investments, amortized cost | 6,548,000 | ||||||
| Investments, fair value | $ 6,548,000 | ||||||
| Percent of net assets | 2.30% | 2.30% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Transervice Holdings, Inc. (d/b/a Transervice Logistics, Inc.) First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:TranserviceHoldingsIncMember | whfcl:TranserviceHoldingsIncMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Air Freight & Logistics | Air Freight & Logistics | Air Freight & Logistics | Air Freight & Logistics | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 2.00% | 2.00% | 2.00% | 2.00% | |||
| Spread Above Index | 7.25% | 7.50% | 7.25% | 7.50% | |||
| Interest Rate | 11.71% | 12.96% | 11.71% | 12.96% | |||
| Acquisition Date | Jun. 29, 2023 | Jun. 29, 2023 | |||||
| Maturity Date | Jun. 29, 2028 | Jun. 29, 2028 | Jun. 29, 2028 | Jun. 29, 2028 | |||
| Principal/Share Amount | $ 8,663,000 | $ 8,888,000 | |||||
| Investments, amortized cost | 8,481,000 | 8,648,000 | |||||
| Investments, fair value | $ 8,715,000 | $ 8,743,000 | |||||
| Percent of net assets | 3.00% | 2.80% | 3.00% | 2.80% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Trimlite Buyer LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:TrimliteBuyerLLCMember | whfcl:TrimliteBuyerLLCMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | country:CA | country:CA | country:CA | country:CA | |||
| Investment, Industry Sector [Extensible Enumeration] | Building Products | Building Products | Building Products | Building Products | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:CanadianDollarOfferedRateMember | whfcl:CanadianDollarOfferedRateMember | whfcl:CanadianDollarOfferedRateMember | whfcl:CanadianDollarOfferedRateMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.50% | 6.50% | 6.50% | 6.50% | |||
| Interest Rate | 9.99% | 11.94% | 9.99% | 11.94% | |||
| Acquisition Date | Jul. 27, 2021 | Jul. 27, 2021 | |||||
| Maturity Date | Jul. 27, 2027 | Jul. 27, 2027 | Jul. 27, 2027 | Jul. 27, 2027 | |||
| Principal/Share Amount | $ 18,984 | $ 19,624 | |||||
| Investments, amortized cost | $ 15,006,000 | $ 15,472,000 | |||||
| Investments, fair value | $ 13,206,000 | $ 14,810,000 | |||||
| Percent of net assets | 4.60% | 4.70% | 4.60% | 4.70% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: TriplePoint Acquisition Holdings LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:TriplepointAcquisitionHoldingsLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Construction & Engineering | Construction & Engineering | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.50% | 5.50% | |||||
| Interest Rate | 9.83% | 9.83% | |||||
| Acquisition Date | Jun. 14, 2024 | ||||||
| Maturity Date | May 31, 2029 | May 31, 2029 | |||||
| Investments, fair value | $ 9,000 | ||||||
| Investment, Identifier [Axis]: TriplePoint Acquisition Holdings LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:TriplepointAcquisitionHoldingsLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Construction & Engineering | Construction & Engineering | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.50% | 5.50% | |||||
| Interest Rate | 9.83% | 9.83% | |||||
| Acquisition Date | Jun. 14, 2024 | ||||||
| Maturity Date | May 31, 2029 | May 31, 2029 | |||||
| Investments, fair value | $ 12,000 | ||||||
| Investment, Identifier [Axis]: TriplePoint Acquisition Holdings LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:TriplepointAcquisitionHoldingsLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Construction & Engineering | Construction & Engineering | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 5.50% | 5.50% | |||||
| Interest Rate | 9.83% | 9.83% | |||||
| Acquisition Date | Jun. 14, 2024 | ||||||
| Maturity Date | May 31, 2029 | May 31, 2029 | |||||
| Principal/Share Amount | $ 5,349,000 | ||||||
| Investments, amortized cost | 5,254,000 | ||||||
| Investments, fair value | $ 5,338,000 | ||||||
| Investment, Identifier [Axis]: Turnberry Solutions., First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:TurnberrySolutionsInc.Member | whfcl:TurnberrySolutionsInc.Member | |||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 5.75% | 5.75% | 5.75% | 5.75% | |||
| Interest Rate | 10.21% | 11.45% | 10.21% | 11.45% | |||
| Acquisition Date | Aug. 10, 2021 | Aug. 10, 2021 | |||||
| Maturity Date | Sep. 02, 2026 | Sep. 02, 2026 | Sep. 02, 2026 | Sep. 02, 2026 | |||
| Investments, fair value | $ 4,000 | $ 2,000 | |||||
| Investment, Identifier [Axis]: Turnberry Solutions., First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:TurnberrySolutionsInc.Member | whfcl:TurnberrySolutionsInc.Member | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 5.75% | 5.75% | 5.75% | 5.75% | |||
| Interest Rate | 10.21% | 11.45% | 10.21% | 11.45% | |||
| Acquisition Date | Aug. 10, 2021 | Aug. 10, 2021 | |||||
| Maturity Date | Sep. 02, 2026 | Sep. 02, 2026 | Sep. 02, 2026 | Sep. 02, 2026 | |||
| Principal/Share Amount | $ 5,964,000 | $ 6,026,000 | |||||
| Investments, amortized cost | 5,924,000 | 5,962,000 | |||||
| Investments, fair value | $ 5,964,000 | $ 5,979,000 | |||||
| Investment, Identifier [Axis]: Twin Ridge CRS, LP (d/b/a CRS OneSource) Class A Common Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:TwinRidgeCrsLpMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:ClassCommonUnitsMember | whfcl:ClassCommonUnitsMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Food Distributors | Food Distributors | |||||
| Acquisition Date | May 10, 2024 | ||||||
| Investment owned shares | shares | 63 | 63 | |||||
| Investments, amortized cost | $ 317,000 | ||||||
| Investments, fair value | $ 350,000 | ||||||
| Percent of net assets | 0.10% | 0.10% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: US Methanol Midco LLC (d/b/a US Methanol LLC) First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:UsMethanolMidcoLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Commodity Chemicals | Commodity Chemicals | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 7.75% | 7.75% | |||||
| Interest Rate | 13.29% | 13.29% | |||||
| Acquisition Date | Dec. 20, 2022 | ||||||
| Maturity Date | Dec. 20, 2027 | Dec. 20, 2027 | |||||
| Principal/Share Amount | $ 9,540,000 | ||||||
| Investments, amortized cost | 9,345,000 | ||||||
| Investments, fair value | $ 9,449,000 | ||||||
| Percent of net assets | 3.00% | 3.00% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: US Methanol Midco LLC (d/b/a US Methanol LLC) First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:UsMethanolMidcoLlcMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Commodity Chemicals | Commodity Chemicals | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 7.75% | 7.75% | |||||
| Interest Rate | 13.28% | 13.28% | |||||
| Acquisition Date | Dec. 20, 2022 | ||||||
| Maturity Date | Dec. 20, 2027 | Dec. 20, 2027 | |||||
| Principal/Share Amount | $ 5,203,000 | ||||||
| Investments, amortized cost | 5,111,000 | ||||||
| Investments, fair value | $ 5,153,000 | ||||||
| Percent of net assets | 1.60% | 1.60% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: UserZoom Technologies, Inc. First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:UserzoomTechnologiesIncMember | whfcl:UserzoomTechnologiesIncMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Application Software | Application Software | Application Software | Application Software | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 7.50% | 7.50% | 7.50% | 7.50% | |||
| Interest Rate | 12.75% | 12.99% | 12.75% | 12.99% | |||
| Acquisition Date | Jan. 12, 2023 | Jan. 12, 2023 | |||||
| Maturity Date | Apr. 05, 2029 | Apr. 05, 2029 | Apr. 05, 2029 | Apr. 05, 2029 | |||
| Principal/Share Amount | $ 9,819,000 | $ 9,819,000 | |||||
| Investments, amortized cost | 9,618,000 | 9,570,000 | |||||
| Investments, fair value | $ 9,809,000 | $ 9,719,000 | |||||
| Percent of net assets | 3.40% | 3.20% | 3.40% | 3.20% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Vistria Blocked MGT Investor, LP (d/b/a MGT Consulting Group) Series A Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:VistriaBlockedMgtInvestorLpMember | whfcl:VistriaBlockedMgtInvestorLpMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:SeriesUnitsMember | whfcl:ClassAUnitsMember | whfcl:SeriesUnitsMember | whfcl:ClassAUnitsMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | IT Consulting And Other Services | |||
| Acquisition Date | Apr. 10, 2023 | Apr. 10, 2023 | |||||
| Investments, amortized cost | $ 314,000 | $ 314,000 | |||||
| Investments, fair value | $ 493,000 | $ 406,000 | |||||
| Percent of net assets | 0.20% | 0.10% | 0.20% | 0.10% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: W Electric Intermediate Holdings, LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | W Electric Intermediate Holdings, LLC [Member] | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Industrial Machinery & Supplies & Components | Industrial Machinery & Supplies & Components | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 10.86% | 10.86% | |||||
| Cash interest rate | 9.86% | 9.86% | |||||
| PIK interest rate | 1.00% | 1.00% | |||||
| Acquisition Date | Aug. 15, 2024 | ||||||
| Maturity Date | Aug. 15, 2029 | Aug. 15, 2029 | |||||
| Investments, fair value | $ 9,000 | ||||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: W Electric Intermediate Holdings, LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | W Electric Intermediate Holdings, LLC [Member] | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Industrial Machinery & Supplies & Components | Industrial Machinery & Supplies & Components | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 10.86% | 10.86% | |||||
| Cash interest rate | 9.86% | 9.86% | |||||
| PIK interest rate | 1.00% | 1.00% | |||||
| Acquisition Date | Aug. 15, 2024 | ||||||
| Maturity Date | Aug. 15, 2029 | Aug. 15, 2029 | |||||
| Principal/Share Amount | $ 12,322,000 | ||||||
| Investments, amortized cost | 12,124,000 | ||||||
| Investments, fair value | $ 12,216,000 | ||||||
| Percent of net assets | 4.30% | 4.30% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: WHF STRS Ohio Senior Loan Fund LLC Equity | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:WHFSTRSOhioSeniorLoanFundLLCMember | whfcl:WHFSTRSOhioSeniorLoanFundLLCMember | |||||
| Investment, Type [Extensible Enumeration] | Equity Investments | Equity Investments | Equity Investments | Equity Investments | |||
| Investments, fair value | $ 22,741,000 | $ 22,782,000 | 20,160,000 | ||||
| Investment, Identifier [Axis]: WHF STRS Ohio Senior Loan Fund LLC Interests | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Controlled affiliate company investments | Controlled affiliate company investments | Controlled affiliate company investments | Controlled affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:WHFSTRSOhioSeniorLoanFundMember | whfcl:WHFSTRSOhioSeniorLoanFundMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:LLCInterestsMember | whfcl:LLCInterestsMember | whfcl:LLCInterestsMember | whfcl:LLCInterestsMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Specialized Finance | Specialized Finance | Specialized Finance | Specialized Finance | |||
| Acquisition Date | Jul. 19, 2019 | Jul. 19, 2019 | |||||
| Investment owned shares | shares | 21,104 | 21,104 | 21,104 | 21,104 | |||
| Investments, amortized cost | $ 21,104,000 | $ 21,104,000 | |||||
| Investments, fair value | $ 22,741,000 | $ 22,782,000 | |||||
| Percent of net assets | 7.90% | 7.20% | 7.90% | 7.20% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: WHF STRS Ohio Senior Loan Fund LLC Subordinated Note | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Controlled affiliate company investments | Controlled affiliate company investments | Controlled affiliate company investments | Controlled affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:WHFSTRSOhioSeniorLoanFundLLCMember | whfcl:WHFSTRSOhioSeniorLoanFundLLCMember | |||||
| Investment, Type [Extensible Enumeration] | Subordinated Debt [Member] | Subordinated Debt [Member] | Subordinated Debt [Member] | Subordinated Debt [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Specialized Finance | Specialized Finance | Specialized Finance | Specialized Finance | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Spread Above Index | 6.50% | 6.50% | 6.50% | 6.50% | |||
| Interest Rate | 10.83% | 11.85% | 10.83% | 11.85% | |||
| Acquisition Date | Jul. 19, 2019 | Jul. 19, 2019 | |||||
| Principal/Share Amount | $ 84,416,000 | $ 84,416,000 | |||||
| Investments, amortized cost | 84,416,000 | 84,416,000 | |||||
| Investments, fair value | $ 84,416,000 | $ 84,416,000 | $ 80,000,000 | ||||
| Percent of net assets | 29.50% | 26.60% | 29.50% | 26.60% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Wamp;A Intermediate Co., LLC First Lien Secured Delayed Draw Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:WakefieldAndAssociatesIntermediateCo.LlcMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredDelayedDrawLoanMember | whfcl:FirstLienSecuredDelayedDrawLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Health Care Services | Health Care Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.25% | 6.25% | |||||
| Interest Rate | 10.58% | 10.58% | |||||
| Acquisition Date | Aug. 01, 2024 | ||||||
| Maturity Date | Aug. 01, 2029 | Aug. 01, 2029 | |||||
| Investments, fair value | $ 2,000 | ||||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Wamp;A Intermediate Co., LLC First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:WakefieldAndAssociatesIntermediateCo.LlcMember | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Health Care Services | Health Care Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.25% | 6.25% | |||||
| Interest Rate | 10.58% | 10.58% | |||||
| Acquisition Date | Aug. 01, 2024 | ||||||
| Maturity Date | Aug. 01, 2029 | Aug. 01, 2029 | |||||
| Principal/Share Amount | $ 258,000 | ||||||
| Investments, amortized cost | 253,000 | ||||||
| Investments, fair value | $ 254,000 | ||||||
| Percent of net assets | 0.10% | 0.10% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Wamp;A Intermediate Co., LLC First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:WakefieldAndAssociatesIntermediateCo.LlcMember | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Health Care Services | Health Care Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.25% | 6.25% | |||||
| Interest Rate | 10.58% | 10.58% | |||||
| Acquisition Date | Aug. 01, 2024 | ||||||
| Maturity Date | Aug. 01, 2029 | Aug. 01, 2029 | |||||
| Principal/Share Amount | $ 7,689,000 | ||||||
| Investments, amortized cost | 7,548,000 | ||||||
| Investments, fair value | $ 7,555,000 | ||||||
| Percent of net assets | 2.60% | 2.60% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: What If Media Group, LLC Common Units | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:WhatIfMediaGroupLLCMember | whfcl:WhatIfMediaGroupLLCMember | |||||
| Investment, Type [Extensible Enumeration] | whfcl:CommonUnitsMember | whfcl:CommonUnitsMember | whfcl:CommonUnitsMember | whfcl:CommonUnitsMember | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Interactive Media & Services | Interactive Media & Services | Interactive Media & Services | Interactive Media & Services | |||
| Acquisition Date | Jul. 02, 2021 | Jul. 02, 2021 | |||||
| Investment owned shares | shares | 3,081 | 3,081 | 3,081 | 3,081 | |||
| Investments, amortized cost | $ 851,000 | $ 851,000 | |||||
| Investments, fair value | $ 1,756,000 | $ 1,615,000 | |||||
| Percent of net assets | 0.60% | 0.50% | 0.60% | 0.50% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Whitestone Home Furnishings, LLC (d/b/a Saatva, Inc.) First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:WhitestoneHomeFurnishingsLlcMember | whfcl:WhitestoneHomeFurnishingsLlcMember | |||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investment, Industry Sector [Extensible Enumeration] | Home Furnishings | Home Furnishings | Home Furnishings | Home Furnishings | |||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||
| Floor | 1.00% | 1.00% | 1.00% | 1.00% | |||
| Spread Above Index | 6.00% | 6.50% | 6.00% | 6.50% | |||
| Interest Rate | 10.46% | 11.96% | 10.46% | 11.96% | |||
| Acquisition Date | Nov. 06, 2023 | Nov. 06, 2023 | |||||
| Maturity Date | Aug. 20, 2026 | Aug. 20, 2026 | Aug. 20, 2026 | Aug. 20, 2026 | |||
| Principal/Share Amount | $ 2,930,000 | $ 2,990,000 | |||||
| Investments, amortized cost | 2,887,000 | 2,919,000 | |||||
| Investments, fair value | $ 2,930,000 | $ 2,919,000 | |||||
| Percent of net assets | 1.00% | 0.90% | 1.00% | 0.90% | |||
| Investment, Restriction Status [true false] | true | true | true | true | |||
| Investment, Significant Unobservable Input [true false] | true | true | true | true | |||
| Investment, Non-income Producing [true false] | false | false | false | false | |||
| Investment, Identifier [Axis]: Zephyr Buyer, L.P. (d/b/a The Weather Company, LLC) First Lien Secured Revolving Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ZephyrBuyerL.p.Member | ||||||
| Investment, Type [Extensible Enumeration] | whfcl:FirstLienSecuredRevolvingLoanMember | whfcl:FirstLienSecuredRevolvingLoanMember | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Interactive Media & Services | Interactive Media & Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 10.83% | 10.83% | |||||
| Acquisition Date | Jan. 31, 2024 | ||||||
| Maturity Date | Jan. 31, 2030 | Jan. 31, 2030 | |||||
| Investments, fair value | $ 48,000 | ||||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Investment, Identifier [Axis]: Zephyr Buyer, L.P. (d/b/a The Weather Company, LLC) First Lien Secured Term Loan | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Name [Extensible Enumeration] | whfcl:ZephyrBuyerL.p.Member | ||||||
| Investment, Type [Extensible Enumeration] | First Lien Secured Term Loan [Member] | First Lien Secured Term Loan [Member] | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investment, Industry Sector [Extensible Enumeration] | Interactive Media & Services | Interactive Media & Services | |||||
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | whfcl:SecuredOvernightFinancingRateSofrMember | whfcl:SecuredOvernightFinancingRateSofrMember | |||||
| Floor | 1.00% | 1.00% | |||||
| Spread Above Index | 6.50% | 6.50% | |||||
| Interest Rate | 10.83% | 10.83% | |||||
| Acquisition Date | Jan. 31, 2024 | ||||||
| Maturity Date | Jan. 31, 2030 | Jan. 31, 2030 | |||||
| Principal/Share Amount | $ 14,087,000 | ||||||
| Investments, amortized cost | 13,789,000 | ||||||
| Investments, fair value | $ 14,166,000 | ||||||
| Percent of net assets | 5.00% | 5.00% | |||||
| Investment, Restriction Status [true false] | true | true | |||||
| Investment, Significant Unobservable Input [true false] | true | true | |||||
| Investment, Non-income Producing [true false] | false | false | |||||
| Morgan Stanley | |||||||
| Schedule of Investments [Line Items] | |||||||
| Unrealized appreciation | $ 20,000 | ||||||
| Unrealized depreciation | $ (43,000) | ||||||
| Morgan Stanley | CAD | |||||||
| Schedule of Investments [Line Items] | |||||||
| Currency to be sold | 796 | 1,253 | |||||
| Currency to be purchased | 903 | ||||||
| Unrealized appreciation | $ 20,000 | ||||||
| Unrealized depreciation | $ (43,000) | ||||||
| Morgan Stanley | USD | |||||||
| Schedule of Investments [Line Items] | |||||||
| Currency to be purchased | 574 | 903 | |||||
| Advertising | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 11,937,000 | $ 12,009,000 | |||||
| Investments, fair value | $ 12,035,000 | $ 12,040,000 | |||||
| Air Freight & Logistics | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 3,286,000 | $ 3,503,000 | |||||
| Investments, fair value | $ 3,311,000 | $ 3,504,000 | |||||
| Broadline Retail | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 18,577,000 | $ 18,798,000 | |||||
| Investments, fair value | $ 17,827,000 | $ 18,759,000 | |||||
| Building Products | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 13,445,000 | $ 13,541,000 | |||||
| Investments, fair value | $ 13,437,000 | $ 13,313,000 | |||||
| Construction & Engineering | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 16,016,000 | $ 9,476,000 | |||||
| Investments, fair value | $ 16,253,000 | $ 9,550,000 | |||||
| Data Processing & Outsourced Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 14,234,000 | $ 14,969,000 | |||||
| Investments, fair value | $ 12,885,000 | $ 14,659,000 | |||||
| Distributors | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 9,307,000 | ||||||
| Investments, fair value | $ 9,372,000 | ||||||
| Diversified Support Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 19,107,000 | $ 19,246,000 | |||||
| Investments, fair value | $ 19,282,000 | $ 19,136,000 | |||||
| Electronic Equipment & Instruments | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 13,203,000 | ||||||
| Investments, fair value | $ 13,269,000 | ||||||
| Environmental & Facilities Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 29,529,000 | $ 19,632,000 | |||||
| Investments, fair value | $ 29,963,000 | $ 19,691,000 | |||||
| Food Distributors | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 4,919,000 | ||||||
| Investments, fair value | $ 4,993,000 | ||||||
| Health Care Facilities | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 7,944,000 | ||||||
| Investments, fair value | $ 8,004,000 | ||||||
| Health Care Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 4,898,000 | $ 4,922,000 | |||||
| Investments, fair value | $ 4,995,000 | $ 5,022,000 | |||||
| Health Care Supplies | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 7,461,000 | $ 7,500,000 | |||||
| Investments, fair value | $ 7,696,000 | $ 7,530,000 | |||||
| Household Appliances | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 7,649,000 | $ 7,808,000 | |||||
| Investments, fair value | $ 7,632,000 | $ 8,168,000 | |||||
| Industrial Machinery & Supplies & Components | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 6,498,000 | ||||||
| Investments, fair value | $ 6,561,000 | ||||||
| Investment Banking & Brokerage | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 4,958,000 | ||||||
| Investments, fair value | $ 4,977,000 | ||||||
| IT Consulting And Other Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 32,427,000 | $ 50,974,000 | |||||
| Investments, fair value | $ 32,720,000 | $ 51,295,000 | |||||
| Packaged Foods & Meats | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 6,939,000 | $ 6,904,000 | |||||
| Investments, fair value | $ 7,009,000 | $ 6,904,000 | |||||
| Personal Products | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 5,944,000 | ||||||
| Investments, fair value | $ 5,957,000 | ||||||
| Paper & Plastic Packaging Products & Materials | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 14,964,000 | $ 14,939,000 | |||||
| Investments, fair value | $ 14,881,000 | $ 14,913,000 | |||||
| Research & Consulting Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 11,900,000 | $ 15,815,000 | |||||
| Investments, fair value | $ 11,977,000 | $ 16,149,000 | |||||
| Technology Hardware, Storage & Peripherals | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 17,880,000 | $ 18,811,000 | |||||
| Investments, fair value | $ 17,949,000 | $ 18,853,000 | |||||
| Wireless Telecommunication Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 6,256,000 | $ 6,294,000 | |||||
| Investments, fair value | $ 6,332,000 | $ 6,295,000 | |||||
| Debt Investments | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Controlled affiliate company investments, Non-controlled affiliate company investments, Non-controlled/non-affiliate company investments | Controlled affiliate company investments, Non-controlled affiliate company investments, Non-controlled/non-affiliate company investments | Controlled affiliate company investments, Non-controlled affiliate company investments, Non-controlled/non-affiliate company investments | Controlled affiliate company investments, Non-controlled affiliate company investments, Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember, country:CA | srt:NorthAmericaMember, country:CA | srt:NorthAmericaMember, country:CA | srt:NorthAmericaMember, country:CA | |||
| Investments, amortized cost | $ 631,941,000 | $ 693,621,000 | |||||
| Investments, fair value | $ 596,626,000 | $ 656,707,000 | |||||
| Percent of net assets | 208.40% | 207.40% | 208.40% | 207.40% | |||
| Debt Investments | Advertising | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 16,365,000 | ||||||
| Investments, fair value | $ 16,862,000 | ||||||
| Percent of net assets | 6.00% | 6.00% | |||||
| Debt Investments | Air Freight & Logistics | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 29,360,000 | $ 23,689,000 | |||||
| Investments, fair value | $ 28,518,000 | $ 22,616,000 | |||||
| Percent of net assets | 9.90% | 7.20% | 9.90% | 7.20% | |||
| Debt Investments | Application Software | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 36,508,000 | $ 39,567,000 | |||||
| Investments, fair value | $ 26,924,000 | $ 34,202,000 | |||||
| Percent of net assets | 9.40% | 11.00% | 9.40% | 11.00% | |||
| Debt Investments | Automotive Retail | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 12,391,000 | ||||||
| Investments, fair value | $ 12,407,000 | ||||||
| Percent of net assets | 3.90% | 3.90% | |||||
| Debt Investments | Broadcasting | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 7,808,000 | $ 7,329,000 | |||||
| Investments, fair value | $ 7,833,000 | $ 7,243,000 | |||||
| Percent of net assets | 2.70% | 2.30% | 2.70% | 2.30% | |||
| Debt Investments | Broadline Retail | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 4,556,000 | $ 19,000,000 | |||||
| Investments, fair value | $ 4,580,000 | $ 19,079,000 | |||||
| Percent of net assets | 1.60% | 6.10% | 1.60% | 6.10% | |||
| Debt Investments | Building Products | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | country:CA | country:CA | country:CA | country:CA | |||
| Investments, amortized cost | $ 15,006,000 | $ 15,472,000 | |||||
| Investments, fair value | $ 13,206,000 | $ 14,810,000 | |||||
| Percent of net assets | 4.60% | 4.70% | 4.60% | 4.70% | |||
| Debt Investments | Commodity Chemicals | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 15,765,000 | $ 30,242,000 | |||||
| Investments, fair value | $ 16,026,000 | $ 30,712,000 | |||||
| Percent of net assets | 5.60% | 9.70% | 5.60% | 9.70% | |||
| Debt Investments | Construction & Engineering | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 3,539,000 | $ 137,000 | |||||
| Investments, fair value | $ 3,539,000 | $ 137,000 | |||||
| Percent of net assets | 1.20% | 1.20% | |||||
| Debt Investments | Construction Materials | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 6,320,000 | $ 8,023,000 | |||||
| Investments, fair value | $ 5,640,000 | $ 6,901,000 | |||||
| Percent of net assets | 2.00% | 2.20% | 2.00% | 2.20% | |||
| Debt Investments | Data Processing & Outsourced Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 28,409,000 | $ 34,137,000 | |||||
| Investments, fair value | $ 28,572,000 | $ 33,997,000 | |||||
| Percent of net assets | 10.00% | 10.80% | 10.00% | 10.80% | |||
| Debt Investments | Distributors | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 10,563,000 | $ 15,946,000 | |||||
| Investments, fair value | $ 10,690,000 | $ 12,475,000 | |||||
| Percent of net assets | 3.70% | 3.90% | 3.70% | 3.90% | |||
| Debt Investments | Diversified Chemicals | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled affiliate company investments | Non-controlled affiliate company investments, Non-controlled/non-affiliate company investments | Non-controlled affiliate company investments | Non-controlled affiliate company investments, Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 3,342,000 | $ 10,549,000 | |||||
| Investments, fair value | $ 3,342,000 | $ 10,008,000 | |||||
| Percent of net assets | 1.20% | 3.20% | 1.20% | 3.20% | |||
| Debt Investments | Diversified Support Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 9,559,000 | $ 9,354,000 | |||||
| Investments, fair value | $ 9,414,000 | $ 9,293,000 | |||||
| Percent of net assets | 3.30% | 2.90% | 3.30% | 2.90% | |||
| Debt Investments | Education Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 22,584,000 | $ 20,877,000 | |||||
| Investments, fair value | $ 21,214,000 | $ 20,300,000 | |||||
| Percent of net assets | 7.40% | 6.50% | 7.40% | 6.50% | |||
| Debt Investments | Electric Utilities | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 15,802,000 | $ 15,715,000 | |||||
| Investments, fair value | $ 16,032,000 | $ 15,954,000 | |||||
| Percent of net assets | 5.60% | 5.00% | 5.60% | 5.00% | |||
| Debt Investments | Environmental & Facilities Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 22,984,000 | ||||||
| Investments, fair value | $ 22,895,000 | ||||||
| Percent of net assets | 7.20% | 7.20% | |||||
| Debt Investments | Health Care Facilities | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 8,694,000 | $ 8,973,000 | |||||
| Investments, fair value | $ 8,660,000 | $ 8,966,000 | |||||
| Percent of net assets | 3.00% | 2.80% | 3.00% | 2.80% | |||
| Debt Investments | Health Care Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 19,577,000 | $ 17,577,000 | |||||
| Investments, fair value | $ 19,589,000 | $ 17,643,000 | |||||
| Percent of net assets | 6.90% | 5.50% | 6.90% | 5.50% | |||
| Debt Investments | Health Care Supplies | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 20,142,000 | $ 20,056,000 | |||||
| Investments, fair value | $ 19,535,000 | $ 18,983,000 | |||||
| Percent of net assets | 6.80% | 6.00% | 6.80% | 6.00% | |||
| Debt Investments | Heavy Electrical Equipment | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 9,971,000 | $ 10,048,000 | |||||
| Investments, fair value | $ 10,138,000 | $ 10,135,000 | |||||
| Percent of net assets | 3.60% | 3.20% | 3.60% | 3.20% | |||
| Debt Investments | Home Furnishings | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 25,288,000 | $ 27,965,000 | |||||
| Investments, fair value | $ 25,376,000 | $ 27,508,000 | |||||
| Percent of net assets | 8.80% | 8.60% | 8.80% | 8.60% | |||
| Debt Investments | Household Products | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 12,104,000 | $ 11,282,000 | |||||
| Investments, fair value | $ 11,656,000 | $ 10,873,000 | |||||
| Percent of net assets | 4.10% | 3.40% | 4.10% | 3.40% | |||
| Debt Investments | Household Appliances | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 22,326,000 | $ 22,088,000 | |||||
| Investments, fair value | $ 21,255,000 | $ 21,397,000 | |||||
| Percent of net assets | 7.40% | 6.80% | 7.40% | 6.80% | |||
| Debt Investments | Industrial Machinery & Supplies & Components | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 12,124,000 | $ 5,536,000 | |||||
| Investments, fair value | $ 12,225,000 | $ 5,364,000 | |||||
| Percent of net assets | 4.30% | 1.70% | 4.30% | 1.70% | |||
| Debt Investments | Integrated Telecommunication Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 12,602,000 | $ 12,357,000 | |||||
| Investments, fair value | $ 13,135,000 | $ 13,191,000 | |||||
| Percent of net assets | 4.60% | 4.20% | 4.60% | 4.20% | |||
| Debt Investments | Interactive Media & Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 13,789,000 | ||||||
| Investments, fair value | $ 14,214,000 | ||||||
| Percent of net assets | 5.00% | 5.00% | |||||
| Debt Investments | Investment Banking & Brokerage | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 3,521,000 | ||||||
| Investments, fair value | $ 3,522,000 | ||||||
| Percent of net assets | 1.10% | 1.10% | |||||
| Debt Investments | IT Consulting And Other Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 3,741,000 | ||||||
| Investments, fair value | $ 3,745,000 | ||||||
| Percent of net assets | 1.20% | 1.20% | |||||
| Debt Investments | Leisure Facilities | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled affiliate company investments, Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled affiliate company investments, Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 19,133,000 | $ 22,593,000 | |||||
| Investments, fair value | $ 19,337,000 | $ 22,436,000 | |||||
| Percent of net assets | 6.80% | 7.10% | 6.80% | 7.10% | |||
| Debt Investments | Leisure Products | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Controlled affiliate company investments, Non-controlled affiliate company investments, Non-controlled/non-affiliate company investments | Controlled affiliate company investments, Non-controlled affiliate company investments, Non-controlled/non-affiliate company investments | Controlled affiliate company investments, Non-controlled affiliate company investments, Non-controlled/non-affiliate company investments | Controlled affiliate company investments, Non-controlled affiliate company investments, Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 45,674,000 | $ 32,063,000 | |||||
| Investments, fair value | $ 23,298,000 | $ 18,488,000 | |||||
| Percent of net assets | 8.10% | 5.80% | 8.10% | 5.80% | |||
| Debt Investments | Life Sciences Tools & Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 4,953,000 | $ 4,944,000 | |||||
| Investments, fair value | $ 5,000,000 | $ 4,901,000 | |||||
| Percent of net assets | 1.70% | 1.50% | 1.70% | 1.50% | |||
| Debt Investments | Office Services & Supplies | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 15,476,000 | ||||||
| Investments, fair value | $ 15,503,000 | ||||||
| Percent of net assets | 4.90% | 4.90% | |||||
| Debt Investments | Packaged Foods & Meats | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 4,024,000 | ||||||
| Investments, fair value | $ 4,087,000 | ||||||
| Percent of net assets | 1.40% | 1.40% | |||||
| Debt Investments | Paper Products | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 9,119,000 | ||||||
| Investments, fair value | $ 9,453,000 | ||||||
| Percent of net assets | 3.30% | 3.30% | |||||
| Debt Investments | Real Estate Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 21,016,000 | $ 21,501,000 | |||||
| Investments, fair value | $ 20,710,000 | $ 21,735,000 | |||||
| Percent of net assets | 7.30% | 6.90% | 7.30% | 6.90% | |||
| Debt Investments | Research & Consulting Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 4,823,000 | $ 8,166,000 | |||||
| Investments, fair value | $ 4,927,000 | $ 8,143,000 | |||||
| Percent of net assets | 1.70% | 2.50% | 1.70% | 2.50% | |||
| Debt Investments | Specialized Consumer Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 6,629,000 | $ 17,254,000 | |||||
| Investments, fair value | $ 6,748,000 | $ 17,492,000 | |||||
| Percent of net assets | 2.40% | 5.50% | 2.40% | 5.50% | |||
| Debt Investments | Security & Alarm Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 6,857,000 | ||||||
| Investments, fair value | $ 7,070,000 | ||||||
| Percent of net assets | 2.50% | 2.50% | |||||
| Debt Investments | Specialized Finance | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Controlled affiliate company investments | Controlled affiliate company investments | Controlled affiliate company investments | Controlled affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 84,416,000 | $ 84,416,000 | |||||
| Investments, fair value | $ 84,416,000 | $ 84,416,000 | |||||
| Percent of net assets | 29.50% | 26.60% | 29.50% | 26.60% | |||
| Debt Investments | Systems Software | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled affiliate company investments, Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled affiliate company investments, Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 16,573,000 | $ 20,618,000 | |||||
| Investments, fair value | $ 17,267,000 | $ 11,523,000 | |||||
| Percent of net assets | 5.90% | 3.60% | 5.90% | 3.60% | |||
| Debt Investments | Technology Hardware, Storage & Peripherals | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 18,547,000 | $ 16,808,000 | |||||
| Investments, fair value | $ 18,072,000 | $ 16,745,000 | |||||
| Percent of net assets | 6.30% | 5.30% | 6.30% | 5.30% | |||
| Debt Investments | Transaction & Payment Processing Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 8,074,000 | ||||||
| Investments, fair value | $ 8,066,000 | ||||||
| Percent of net assets | 2.80% | 2.80% | |||||
| Debt Investments | Wireless Telecommunication Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 21,226,000 | ||||||
| Investments, fair value | $ 20,969,000 | ||||||
| Percent of net assets | 6.60% | 6.60% | |||||
| Subordinated Debt [Member] | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investments, amortized cost | $ 1,152,000 | $ 167,000 | |||||
| Investments, fair value | $ 1,175,000 | $ 167,000 | |||||
| Equity Investments | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Controlled affiliate company investments, Non-controlled affiliate company investments, Non-controlled/non-affiliate company investments | Controlled affiliate company investments, Non-controlled affiliate company investments, Non-controlled/non-affiliate company investments | Controlled affiliate company investments, Non-controlled affiliate company investments, Non-controlled/non-affiliate company investments | Controlled affiliate company investments, Non-controlled affiliate company investments, Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 63,299,000 | $ 46,400,000 | |||||
| Investments, fair value | $ 45,587,000 | $ 39,461,000 | |||||
| Percent of net assets | 16.00% | 12.30% | 16.00% | 12.30% | |||
| Equity Investments | Advertising | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 297,000 | $ 294,000 | |||||
| Investments, fair value | $ 589,000 | $ 420,000 | |||||
| Percent of net assets | 0.20% | 0.10% | 0.20% | 0.10% | |||
| Equity Investments | Air Freight & Logistics | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 1,250,000 | $ 1,250,000 | |||||
| Equity Investments | Broadline Retail | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 514,000 | $ 514,000 | |||||
| Investments, fair value | $ 756,000 | $ 832,000 | |||||
| Percent of net assets | 0.30% | 0.30% | 0.30% | 0.30% | |||
| Equity Investments | Building Products | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 24,000 | $ 423,000 | |||||
| Investments, fair value | $ 1,053,000 | ||||||
| Percent of net assets | 0.30% | 0.30% | |||||
| Equity Investments | Construction & Engineering | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 404,000 | $ 404,000 | |||||
| Investments, fair value | $ 388,000 | $ 404,000 | |||||
| Percent of net assets | 0.10% | 0.10% | 0.10% | 0.10% | |||
| Equity Investments | Diversified Chemicals | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled affiliate company investments | Non-controlled affiliate company investments | Non-controlled affiliate company investments | Non-controlled affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 4,537,000 | $ 4,537,000 | |||||
| Investments, fair value | $ 1,657,000 | $ 251,000 | |||||
| Percent of net assets | 0.60% | 0.10% | 0.60% | 0.10% | |||
| Equity Investments | Diversified Support Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 376,000 | $ 360,000 | |||||
| Investments, fair value | $ 149,000 | $ 305,000 | |||||
| Percent of net assets | 0.10% | 0.10% | 0.10% | 0.10% | |||
| Equity Investments | Education Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 334,000 | $ 167,000 | |||||
| Investments, fair value | $ 100,000 | $ 18,000 | |||||
| Equity Investments | Environmental & Facilities Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 942,000 | $ 825,000 | |||||
| Investments, fair value | $ 1,400,000 | $ 983,000 | |||||
| Percent of net assets | 0.50% | 0.30% | 0.50% | 0.30% | |||
| Equity Investments | Food Distributors | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 317,000 | ||||||
| Investments, fair value | $ 350,000 | ||||||
| Percent of net assets | 0.10% | 0.10% | |||||
| Equity Investments | Household Products | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 1,100,000 | ||||||
| Investments, fair value | $ 907,000 | ||||||
| Percent of net assets | 0.30% | 0.30% | |||||
| Equity Investments | Household Appliances | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 1,100,000 | ||||||
| Investments, fair value | $ 1,330,000 | ||||||
| Percent of net assets | 0.40% | 0.40% | |||||
| Equity Investments | Industrial Machinery & Supplies & Components | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 788,000 | $ 788,000 | |||||
| Investments, fair value | $ 1,012,000 | $ 1,053,000 | |||||
| Percent of net assets | 0.40% | 0.30% | 0.40% | 0.30% | |||
| Equity Investments | Interactive Media & Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 851,000 | $ 851,000 | |||||
| Investments, fair value | $ 1,756,000 | $ 1,615,000 | |||||
| Percent of net assets | 0.60% | 0.50% | 0.60% | 0.50% | |||
| Equity Investments | IT Consulting And Other Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 1,926,000 | $ 1,926,000 | |||||
| Investments, fair value | $ 3,504,000 | $ 2,804,000 | |||||
| Percent of net assets | 1.30% | 0.80% | 1.30% | 0.80% | |||
| Equity Investments | Leisure Facilities | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled affiliate company investments, Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled affiliate company investments, Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 2,734,000 | $ 2,734,000 | |||||
| Investments, fair value | $ 243,000 | $ 183,000 | |||||
| Percent of net assets | 0.10% | 0.10% | |||||
| Equity Investments | Leisure Products | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Controlled affiliate company investments, Non-controlled affiliate company investments | Controlled affiliate company investments, Non-controlled affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 4,060,000 | ||||||
| Equity Investments | Office Services & Supplies | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Controlled affiliate company investments, Non-controlled affiliate company investments | Controlled affiliate company investments, Non-controlled affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 4,060,000 | ||||||
| Equity Investments | Other Diversified Financial Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 2,890,000 | ||||||
| Investments, fair value | $ 3,472,000 | ||||||
| Percent of net assets | 1.10% | 1.10% | |||||
| Equity Investments | Paper & Plastic Packaging Products & Materials | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 400,000 | $ 400,000 | |||||
| Investments, fair value | $ 179,000 | ||||||
| Percent of net assets | 0.10% | 0.10% | |||||
| Equity Investments | Real Estate Operating Companies | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 840,000 | ||||||
| Investments, fair value | $ 1,023,000 | ||||||
| Percent of net assets | 0.30% | 0.30% | |||||
| Equity Investments | Real Estate Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 840,000 | ||||||
| Investments, fair value | $ 162,000 | ||||||
| Percent of net assets | 0.10% | 0.10% | |||||
| Equity Investments | Research & Consulting Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 333,000 | $ 333,000 | |||||
| Investments, fair value | $ 368,000 | $ 295,000 | |||||
| Percent of net assets | 0.10% | 0.10% | 0.10% | 0.10% | |||
| Equity Investments | Specialized Consumer Services | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | Non-controlled/non-affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 600,000 | $ 600,000 | |||||
| Investments, fair value | $ 374,000 | $ 459,000 | |||||
| Percent of net assets | 0.10% | 0.20% | 0.10% | 0.20% | |||
| Equity Investments | Specialized Finance | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Controlled affiliate company investments | Controlled affiliate company investments | Controlled affiliate company investments | Controlled affiliate company investments | |||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | srt:NorthAmericaMember | |||
| Investments, amortized cost | $ 21,104,000 | $ 21,104 | |||||
| Investments, fair value | $ 22,741,000 | $ 22,782,000 | |||||
| Percent of net assets | 7.90% | 7.20% | 7.90% | 7.20% | |||
| Equity Investments | Systems Software | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investment, Issuer Affiliation [Extensible Enumeration] | Non-controlled affiliate company investments | Non-controlled affiliate company investments | |||||
| Investment, Issuer Geographic Region [Extensible Enumeration] | srt:NorthAmericaMember | srt:NorthAmericaMember | |||||
| Investments, amortized cost | $ 19,568,000 | ||||||
| Investments, fair value | $ 9,131,000 | ||||||
| Percent of net assets | 3.20% | 3.20% | |||||
| Money Market Funds | |||||||
| Schedule of Investments [Line Items] | |||||||
| Percent of net assets | 4.60% | 4.60% | |||||
| Money Market Funds amortized cost | $ 13,249,000 | ||||||
| Money Market Fair Value | $ 13,249,000 | ||||||
| Goldman Sachs Money Market Fund (CUSIP: 38141W315) | |||||||
| Schedule of Investments [Line Items] | |||||||
| Percent of net assets | 0.30% | 0.30% | |||||
| Weighted average interest rate | 4.33% | 4.33% | |||||
| Money Market Funds amortized cost | $ 837,000 | ||||||
| Money Market Fair Value | $ 837,000 | ||||||
| Invesco Treasury Money Market Fund (CUSIP: X9USDINVE) | |||||||
| Schedule of Investments [Line Items] | |||||||
| Percent of net assets | 4.30% | 4.30% | |||||
| Weighted average interest rate | 3.83% | 3.83% | |||||
| Money Market Funds amortized cost | $ 12,412,000 | ||||||
| Money Market Fair Value | 12,412,000 | ||||||
| Pressurized Holdings, LLC [Member] | Preferred Units [Member] | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investments, amortized cost | $ 3,892,000 | ||||||
| Sklar Holdings, Inc [Member] | First Lien Secured Term Loan [Member] | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investments, amortized cost | $ 3,339,000 | ||||||
| Honors Holdings, LLC [Member] | |||||||
| Schedule of Investments [Line Items] | |||||||
| Additional interest for senior term debt | 3.50% | ||||||
| Non-controlled/non-affiliate company investments | |||||||
| Schedule of Investments [Line Items] | |||||||
| Investments, fair value | $ 504,832,000 | $ 577,798,000 | |||||