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Disclosure - Related Party Transactions - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 996050 - Disclosure - Related Party Transactions - Trinity Capital Adviser LLC - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 996060 - Disclosure - Related Party Transactions - Eagle Point Trinity Senior Secured Lending Company - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 996070 - Disclosure - Segment Reporting - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 996080 - Disclosure - Subsequent Events - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink March 2029 notes. March 2029 Notes Member March 2029 Notes Organization, consolidation and presentation of financial statements. Organization Consolidation And Presentation Of Financial Statements [Table] Organization Consolidation And Presentation Of Financial Statements [Table] Western Europe. Western Europe [Member] Western Europe Axiom Space, Inc. Axiom Space Inc [Member] Axiom Space, Inc. Axiom Space, Inc. Investment, Issuer Name [Axis] CapTrin Partners, LLC [Member] CapTrin Partners, LLC. CapTrin Partners, LLC Cagent Vascular, Inc. [Member] Cagent Vascular, Inc. Cagent Vascular, Inc. Entity Incorporation, State or Country Code Statement of Financial Position Location, Balance [Domain] Balance Sheet Location Legacy funds. Legacy Funds [Member] Legacy Funds O 2021 Q2 Dividends. O 2021 Q2 Dividends [Member] June 15, 2021 Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Table [Text Block] Summary of Company's Assets Measured at Fair Value by Investment Type on a Recurring Basis Percentage of estimated at time of issuance that values of debt. Percentage Of Estimated At Time Of Issuance That Values Of Debt Percentage of estimated at time of issuance that values of debt Tarana Wireless, Inc. Tarana Wireless Inc [Member] Tarana Wireless Inc Plan Name Plan Name [Axis] Entity Current Reporting Status Dividends Payable Amount Per Share Per Share Amount Qwick, Inc. Qwick Inc [Member] Qwick, Inc. Operating Expenses [Abstract] EXPENSES: Fair Value Inputs Level2 [Member] Significant Other Observable Inputs (Level 2) Commitments And Contingencies Disclosure [Text Block] Commitments and Contingencies Investment Company Financial Highlights Table [Text Block] Summary of Financial Highlights Common Stock Shares Authorized Common stock, authorized Earnings Per Share Basic [Abstract] Earnings per common share - basic Issuance of Unsecured Notes, net of issuance costs Proceeds from Repayments of Issuance of Unsecured Debt Proceeds from repayments of issuance of unsecured debt. Investment Policy [Text Block] Investment Transactions Equity interests. Equity Interests [Member] Equity interests Document Fiscal Period Focus Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Interest rate Debt Instrument Interest Rate Stated Percentage Debt instrument percentage Entity Shell Company O 2026 Q1 Dividends [Member] O 2026 Q1 dividends. March 31, 2026 Cash Paid to Convertible Debt Accrued and Unpaid Interest Cash paid to convertible debt accrued and unpaid interest Cash paid to convertible debt accrued and unpaid interest Investment company ratio of interest and credit facility expenses to average net assets. Investment Company Ratio Of Interest And Credit Facility Expenses To Average Net Assets Ratio of interest and credit facility expenses to average net assets Cash and Cash Equivalents, at Carrying Value, Total Cash And Cash Equivalents At Carrying Value Cash and cash equivalents Cash and Cash Equivalents, Cost Nexii Inc [Member] Nexii Inc. Nexii, Inc. Unfunded capital commitment Unfunded capital commitment Unfunded capital commitment. Members' Capital Capital commitment amount Capital contributions Net assets sold Net Assets, Total Assets Net Ending balance Beginning balance Net assets, end of period Evo Equipment Leasing, LLC [Member] Evo Equipment Leasing, LLC [Member] Evo Equipment Leasing, LLC Diagnostics And Tools Member Diagnostics and tools. Diagnostics & Tools 3DEO Inc [Member] 3DEO, Inc. 3DEO, Inc. Common stock, issued Common stock, shares issued Common stock shares issued and sold Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation By Asset Class [Domain] Asset Class Schedule of Portfolio Investments by Investment Type Schedule Of Portfolio Investments By Investment Type [Table Text Block] Schedule of portfolio investments by investment type. Senior Securities Senior securities [Member] Senior securities. Statement [Table] Statement [Table] Interest Receivable Interest receivable Investment Company Investment Income Loss From Operations Per Share Net increase/(decrease) in net assets resulting from operations Investment Owned Balance Principal Amount Principal Amount Investment, Identifier [Axis] Investment Company, Total Return, Market Value Total return based on market value Statement [Line Items] Statement [Line Items] Business Acquisition Acquiree [Domain] Business Acquisition, Acquiree Revenue From Contract With Customer Policy [Text Block] Income Recognition Warrant [Member] Warrants Warrant Investments Entity Filer Category Mesa Financing I, LLC [Member] Mesa Financing I, LLC. Mesa Financing I, LLC Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Liabilities And Stockholders Equity Total liabilities and net assets Debt Instrument [Line Items] Debt Instrument [Line Items] Fixed interest rate Portfolio investment interest rate Fixed interest rate Industry Sector [Axis] Property Plant And Equipment By Type [Axis] Long-Lived Tangible Asset ServiceTrade Inc [Member] ServiceTrade, Inc. ServiceTrade, Inc. Two thousand nineteen long term incentive plan. Two Thousand Nineteen Long Term Incentive Plan [Member] 2019 Long Term Incentive Plan Intelligent Brands, Inc. Intelligent Brands, Inc. [Member] Intelligent Brands, Inc. Intelligent Brands, Inc. Federal Income Tax Note [Text Block] Summary of Tax Cost Basis and Estimated Aggregate Gross Unrealized Appreciation and Depreciation From Investments for Federal Income Tax Purposes Fee Income Fee Income [Member] Fee income. Fee Income Business Acquisition Percentage Of Voting Interests Acquired Percentage of equity interests acquired Derivative [Line Items] Cash And Cash Equivalents Fair Value Disclosure Cash and Cash Equivalents, Fair Value Cash and Cash Equivalents Weighted Average Grant Date Fair Value, Shares Vested and Forfeited Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested and Forfeited In Period Weighted Average Grant Date Fair Value Share based compensation arrangement by share based payment award equity instruments other than options vested and forfeited in period weighted average grant date fair value. Shares Issued Price Per Share Offering price Distribution reinvestment plan. Distribution Reinvestment Plan [Member] Distribution Reinvestment Plan Subsequent Event [Line Items] Investment, Affiliated Issuer [Member] Affiliate Investments Derivative Asset, Notional Amount Notional Amount to be Purchased Interest Income Investment Income, Interest Space Technology Space technology. Space Technology [Member] Bowery Farming, Inc. Bowery Farming Inc [Member] Bowery Farming, Inc. Segment Geographical [Domain] Geographical Volume Weighted Average Trading Price Per Share Volume weighted average trading price per share. Volume weighted average trading price per share Cash and Cash Equivalents Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Tilt Finance, Inc. (dba Empower Financial, Inc.) Tilt Finance, Inc. (Empower Financial, Inc.) [Member] Tilt Finance, Inc. (dba Empower Financial, Inc.). Additional Paid In Capital Common Stock Paid-in capital in excess of par Debt Issuance Costs, Net, Total Deferred Finance Costs Net Unamortized deferred financing costs, net Investment Maturity Date Maturity Date Fair Value Derivative Asset, Subject to Master Netting Arrangement, Liability Offset Fair Value Nucleus RadioPharma, Inc [Member] Nucleus RadioPharma, Inc. Nucleus RadioPharma, Inc Stock Issued During Period Value Dividend Reinvestment Plan Issuance of common stock pursuant to distribution reinvestment plan Investment, Variable Interest Rate, Type [Extensible Enumeration] Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies Consumer products & services. Consumer Products & Services [Member] Consumer Products & Services Adviser Sub Adviser Sub [Member] Adviser sub. Proceeds from Issuance of Secured Debt Issuance of Secured Notes, net of issuance costs Measurement Input Risk Free Interest Rate [Member] Risk-Free Interest Rate Share Repurchase Program [Axis] Vesting [Domain] Tranche C Tranche C Tranche C [Member] Schedule Of Earnings Per Share Basic And Diluted Table [Text Block] Summary of Computation of Basic and Diluted Earnings per Common Share Equity Securities [Member] Equity Equity Investments Valuation technique cost approximates fair value. Valuation Technique Cost Approximates Fair Value [Member] Cost approximates fair value Earnings Per Share, Basic, Total Earnings Per Share Basic NET CHANGE IN NET ASSETS RESULTING FROM OPERATIONS PER SHARE - BASIC Earnings/(Loss) per common share - basic Mountain Mountain America. Mountain America [Member] Equity Funds [Member] Equity investments Equity Retirement of employee shares Payments for Repurchase of Equity Payments for Repurchase of Equity, Total Retirement of employee shares Realized Investment Gains Losses [Abstract] NET REALIZED GAIN/(LOSS) FROM INVESTMENTS: Debt Policy [Text Block] Debt Financing Costs Investment Company Total Return Total return based on net asset value Neuros Medical, Inc. [Member] Neuros Medical, Inc. Neuros Medical, Inc. Net change in Unrealized (Depreciation)/ Appreciation Investments in and Advances to Affiliates, at Fair Value, Period Increase (Decrease) Investments in and Advances to Affiliates, at Fair Value, Period Increase (Decrease), Total EPT 16 LLC EPT 16 LLC [Member] EPT 16 LLC. Eagle Point Trinity Senior Secured Lending Company Adjustments to reconcile net increase/(decrease) in net assets resulting from operation to net cash provided by/(used in) operating activities: Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Dividends Payable Date Of Record Day Month And Year Record Date Get Spiffy Inc [Member] Get Spiffy, Inc. Get Spiffy, Inc. Non qualifying assets at fair value percentage on to total assets. Non Qualifying Assets At Fair Value Percentage On To Total Assets Non qualifying assets at fair value percentage on to total assets Tax Basis Of Investments Gross Unrealized Appreciation Unrealized appreciation Share Repurchase Program [Domain] Repurchase Agreements Valuation Policy Valuation of Investments Investment Company Net Asset Value Per Share Period Increase Decrease Total increase/(decrease) in net assets Transaction Price Transaction Price. Measurement Input Transaction Price [Member] Stock Issued During Period Value Restricted Stock Award Forfeitures Retired and forfeited shares of restricted stock Consumer Products And Services [Member] Consumer Products and Services. Consumer Products & Services Consumer Products & Services Summary of Changes In Fair Value of Company's Level 3 Debt Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Text Block] Entity Small Business SOCi Inc [Member] SOCi, Inc. SOCi, Inc. Variable advance rate on eligible first lien loans Variable Advance Rate On Eligible First Lien Loans Variable advance rate on eligible first lien loans. Market Approach Valuation Technique [Member] Market Approach Retained Earnings Accumulated Deficit Distributable earnings/(accumulated loss) Distributable earnings/(accumulated deficit) Components of distributable earnings Healthcare technology. Healthcare Technology [Member] Healthcare Technology Portofino Labs, Inc.. Portofino Labs Inc [Member] Portofino Labs, Inc. Industry Sector [Domain] Senior Credit Corp [Member] Senior credit corp. Senior Credit Corp Stock Repurchase Program Stock repurchase proram. Stock Repurchase Proram [Member] Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Equity Incentive Plans Orchard Technologies, Inc. Orchard Technologies Inc [Member] Orchard Technologies, Inc. Organization Consolidation And Presentation Of Financial Statements [Abstract] Digital assets technology and services. Digital Assets Technology and Services [Member] Digital Assets Technology and Services Yellowbrick Learning, Inc. Yellowbrick Learning Inc [Member] Yellowbrick Learning, Inc. Amortization of Deferred Charges, Total Amortization of Deferred Charges Amortization of deferred financing costs Amortization of deferred financing costs Common Stock, par value $0.001 per share [Member] Common Class A [Member] Weighted Average Number of Shares Outstanding, Diluted, Adjustment Weighted Average Number of Shares Outstanding, Diluted, Adjustment, Total Adjustment for dilutive effect of Option Awards and Convertible Notes Amendment Flag Food and agriculture technologies. Food and Agriculture Technologies [Member] Food and Agriculture Technologies July 2030 Notes [Member] July 2030 Notes. July 2030 Notes TMRW Life Sciences, Inc. T M R W Life Sciences Inc [Member] TMRW Life Sciences, Inc. Applied Digital Corporation Member Applied Digital Corporation. Applied Digital Corporation Applied Digital Corporation Earnings Per Share Policy [Text Block] Earnings Per Share Line of credit facility revolving period. Line Of Credit Facility Revolving Period Line of credit facility revolving period Entity Address, Postal Zip Code Tranche B. Tranche B [Member] Tranche B Net Cash Provided By Used In Operating Activities Net cash provided by/(used in) operating activities Investment Owned Percent Of Portfolio Investments and Cash and Cash Equivalents Investment owned percent of portfolio investments and cash and cash equivalents. Total Portfolio Investments and Cash and Cash Equivalents, Percentage Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description Unamortized Deferred Financing Costs And Premium Discount Unamortized deferred financing costs and premium discount. Unamortized deferred financing costs and premium/discount Common Stock [Member] Common Stock Nomad Health, Inc. Nomad Health Inc [Member] Nomad Health, Inc. NextCar Holding Company, Inc.. Next Car Holding Company Inc [Member] NextCar Holding Company, Inc. Secured loans. Secured Loans [Member] Secured Loans Effect of shares issued and repurchased Effect of Shares Issued And Repurchased Investment company effect of shares issued and repurchased. Exercise price of option awards Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Lessee Operating Lease Liability Payments Due Year Three 2029 Other assets. Other Assets Policy [Text Block] Other Assets Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Schedule of Fair Value and Locaton of Derivative Instruments in Consolidated Statements of Assets and Liabilities Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] 6.00% Convertible Notes due 2025. Six Point Zero Zero Percentage Convertible Notes Due Two Thousand Twenty Five [Member] 6.00% Convertible Notes due 2025 Entity Address, Address Line One Transfers into/(out of) of Level 3 Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 Transfers out Level 3 Dividends Payable [Table] Dividends Payable [Table] Fair Value By Fair Value Hierarchy Level [Axis] Fair Value Hierarchy and NAV Earnings Per Share [Abstract] Income Taxes Income Tax Policy [Text Block] O 2026 M4 Dividends [Member] O 2026 M4 dividends. March 18, 2026 O2025Q3Dividends [Member] O2025Q3Dividends. September 17, 2025 Supplemental Cash Flow Information [Abstract] Supplemental and non-cash investing and financing activities: Foreign Currency Transactions and Translations Policy [Policy Text Block] Foreign Currency Transactions Noncontrolling Interest in Limited Partnerships Limited partnership interest Income Tax Examination Estimate Of Possible Loss Uncertain tax position Derivative Asset Derivative Asset, Total Total Foreign Currency Forward Maxwell Financial Labs, Inc. Maxwell Financial Labs Inc [Member] Maxwell Financial Labs, Inc Measurement Input Maturity [Member] Estimated Time to Exit (in years) O 2022 Q3 Dividends. O 2022 Q3 Dividends [Member] September 15, 2022 Statement of Financial Position Location, Balance [Axis] Balance Sheet Location Investment Type [Axis] Investment Type Line of credit facility amortization period. Line Of Credit Facility Amortization Period Line of credit facility amortization period Schedule of Carrying Value of Convertible Notes. Schedule Of Carrying Value Of Convertible Notes Table [Text Block] Summary of Carrying Value of Convertible Notes Right of use asset Operating Lease Right Of Use Asset Share-Based Compensation Arrangement by Share-Based Payment Award, Maximum Number of Shares Per Employee Non-statutory stock options purchased Real estate technology. Real Estate Technology [Member] Real Estate Technology Marketing, media, and entertainment. Marketing, Media, and Entertainment [Member] Marketing, Media, and Entertainment Net realized (gain)/loss from investments Gain (Loss) on Sale of Investments, Total Gain Loss On Sale Of Investments Education technology. Education Technology [Member] Education Technology Average daily price of notes. Average Daily Price of Notes Average daily price of notes Document Type Income Taxes Paid, Net, Total Income Taxes Paid Net Income tax, including excise tax, paid Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Equity offering costs. Equity Offering Costs Policy [Text Block] Equity Offering Costs Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Entity Central Index Key Line Of Credit Facility [Table] Line Of Credit Facility [Table] Digilens Inc [Member] Digilens Inc. Digilens, Inc. Valuation Technique [Axis] Valuation Approach and Technique Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect Net increase/(decrease) in cash, cash equivalents and restricted cash Credit Facility [Member] Credit facility. Credit Facility Subsequent Event Type [Domain] Interest Income Interest Income, Operating Interest Income, Operating, Total Capital in Excess of Par Value. Capital In Excess Of Par Value [Member] Capital in Excess of Par Value Equity Interest Issued Or Issuable Type [Domain] Equity Interest Issued or Issuable, Type Common Stock Par Or Stated Value Per Share Common stock, par value Vox Media Holdings, Inc [Member] Vox Media Holdings, Inc. Vox Media Holdings, Inc. Vox Media Holdings, Inc. Operating Costs and Expenses Total gross expenses Share-Based Payment Arrangement, Tranche One [Member] Tranche One Liabilities [Abstract] LIABILITIES Uniphore Technologies Inc. [Member] Uniphore Technologies Inc.. Uniphore Technologies Inc. O 2022 Q4 Dividends. O 2022 Q4 Dividends [Member] December 15, 2022 Goldman Sachs Financial Square Government Institutional Fund Goldman Sachs Financial Square Government Institutional Fund [Member] Goldman Sachs Financial Square Government Institutional Fund. Realized gain Realized Gain/(Loss) Net realized gain/(loss) from investments Net realized gain/(loss) from investments Other cash accounts. Other Cash Accounts [Member] Other Cash Accounts O2020Q3Dividends. O2020Q3Dividends [Member] November 9, 2020 Unamortized deferred financing costs and discount Unamortized deferred financing costs and discount. Unamortized deferred financing costs and discount Debt Disclosure [Abstract] Ordinary income percentage. Ordinary Income Percentage Ordinary income percentage Mainspring Energy, Inc. Mainspring Energy Inc [Member] Mainspring Energy, Inc. Investment [Text Block] Investments Derivative [Table] Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases Purchases, net of deferred fees Valuation Technique, Black-Scholes-Merton Model [Member] Black Scholes Cash and cash equivalents interest rate Cash and cash equivalents interest rate. Cash and Cash Equivalents Interest Rate December 17, 2025 O 2026 M3 Dividends [Member] O 2026 M3 dividends. Investments In And Advances To Affiliates At Fair Value Gross Additions Gross Additions Excise And Sales Taxes Excise tax expense Federal excise tax Knockaway, Inc. Knockaway Inc [Member] Knockaway Inc. Current Fiscal Year End Date Debt Instrument [Table] Debt Instrument [Table] KeyBank Secured Term Loan Facility [Member] KeyBank secured term loan facility. KeyBank Secured Term Loan Facility Rarefied Atmosphere, Inc. [Member] Rarefied Atmosphere, Inc. Rarefied Atmosphere, Inc. Document Quarterly Report Paytient Technologies, Inc. [Member] Paytient Technologies, Inc. Paytient Technologies, Inc. Probability Weighting of Alternative Outcomes. Measurement Input Probability Weighting Of Alternative Outcomes [Member] Probability Weighting of Alternative Outcomes Cherry Technologies Inc [Member] Cherry Technologies, Inc. Cherry Technologies, Inc. Fair Value By Balance Sheet Grouping [Table] Fair Value By Balance Sheet Grouping [Table] Entity Address, State or Province Distribution payable Distribution Payable Unvested, Beginning balance Unvested, Ending balance Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number Investment Company Investment Income Loss Ratio Investment percentage Ratio of net investment income to average net assets Line Of Credit Facility Remaining Borrowing Capacity Line of credit facility, borrowing availability Shares Investment Owned, Balance, Shares O 2022 Q2 Dividends. O 2022 Q2 Dividends [Member] June 15, 2022 Statement Geographical [Axis] Geographical Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Increase Decrease In Accrued Interest Receivable Net (Increase)/Decrease in interest receivable Angel Studios, Inc. [Member] Angel Studios, Inc. Angel Studios, Inc. Disclosure of summary of significant accounting policies. Disclosure Of Summary Of Significant Accounting Policies [Table] Disclosure Of Summary Of Significant Accounting Policies [Table] RXAnte, Inc. Member RXAnte, Inc. RXAnte, Inc. Payment of common stock value in cash. Payment Of Common Stock Value In Cash Payment of common stock value in cash Estimated Yield Estimated yield. Aggregate Principal Amount Aggregate principal amount. Aggregate principal amount May 7, 2020 O2020Q1Dividends. O2020Q1Dividends [Member] Professional Fees Professional fees Percentage of fee for loan and advance. Percentage of Fee for Loan and Advance Percentage of fee for loan and advance Issuance premium and/or (discount), net of accretion Debt Instrument, Unamortized Discount (Premium), Net Debt Instrument, Unamortized Discount (Premium), Net, Total Option Awards Equity Option [Member] Rocket Lab USA Inc [Member] Rocket Lab USA, Inc. Rocket Lab USA, Inc. Subsequent Event Subsequent Event [Member] Portfolio Investments and Cash and Cash Equivalents, Fair Value Portfolio investments and cash and cash equivalents, fair value. Total Portfolio Investments and Cash and Cash Equivalents, Fair Value Total Portfolio Investments and Cash and Cash Equivalents, Fair Value Reciprocity, Inc. Reciprocity, Inc. Reciprocity Inc [Member] Reciprocity, Inc. Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net, Total Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Unamortized deferred finance costs Unamortized debt financing cost Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Table] Unsecured Debt Unsecured Debt, Total Unsecured Notes, net of $9,273 and $10,118, respectively, of unamortized deferred financing costs and premium/discount Unsecured Notes, net of $9,273 and $10,118, respectively, of unamortized deferred financing costs and premium/discount PIK Interest Rate Investment, Interest Rate, Paid in Kind Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Vesting percentage Direct Lending [Member] Direct lending. Direct Lending Busbot Inc [Member] Busbot Inc. Busbot, Inc. Interest Expense, Debt, Total Interest Expense Debt Stated interest expense Derivative Liability, Notional Amount Notional Amount to be Sold Tranche A. Tranche A [Member] Tranche A Non deductible federal excise tax. Non Deductible Federal Excise Tax Nondeductible federal excise tax Derivative Liability Derivative Liability, Total Derivative Instruments Derivative Instruments Treasury Stock, Common, Shares Shares repurchased Investment, Issuer Name [Domain] S 2023 Two Dividends. S 2023 Two Dividends [Member] September 13, 2023 BaubleBar, Inc. Bauble Bar Inc [Member] BaubleBar, Inc. Cash and Cash Equivalents [Domain] Unsecured Notes Unsecured Debt [Member] Fair Value Net Asset Liability [Abstract] O 2023 Q4 Dividends. O 2023 Q4 Dividends [Member] December 14, 2023 Maximum Advance Rate Maximum advance rate. Maximum advance rate Aledia, Inc. Aledia Inc [Member] Aledia Inc Debt Instrument Maturity Date Debt instrument, maturity date Astranis Space Technology Corporation [Member] Astranis Space Technology Corporation. Astranis Space Technology Corporation Net change in unrealized (appreciation)/depreciation from investments Increase decrease in unrealized appreciation (depreciation) from investments. Increase Decrease In Unrealized Appreciation Depreciation From Investments Minimum [Member] Minimum Weighted Average Grant Date Fair Value, Shares Granted Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value Financial Instrument [Axis] Financial Instrument Equity Derivative Assets, Fair Value Derivative Asset, Subject to Master Netting Arrangement, before Offset Non accrual cost Non accrual cost. Non Accrual Cost O 2026 M2 Dividends [Member] O 2026 M2 dividends. December 17, 2025 Investments In And Advances To Affiliates At Fair Value Gross Reductions Gross Reductions Footprint International Holding, Inc. Footprint International Holding Inc [Member] Footprint International Holding, Inc. Madison Reed, Inc. Madison Reed Inc [Member] Madison Reed, Inc. Joint venture ownership percentage Joint venture ownership percentage. Joint venture ownership percentage Control and affiliate investments. Control And Affiliate Investments [Member] Control and Affiliate Investments Parafin, Inc. [Member] Parafin, Inc. Parafin, Inc. Fair Value Inputs Level3 [Member] Significant Unobservable Inputs (Level 3) Investment Company Gain Loss On Investment Per Share Net realized and unrealized gains/(losses) on investments I Fourty LLC. I Fourty LLC [Member] i 40 LLC Segment Reporting [Abstract] Seven Point Zero Zero Notes Due 2025. Seven Point Zero Zero Notes Due2025 [Member] 7.00% Notes due 2025 Unrealized Gain Loss On Investments Net change in unrealized appreciation/(depreciation) from investments Net change in unrealized appreciation/(depreciation) from investments O2024Q4Dividends [Member] O2024Q4Dividends. December 12, 2024 Impulse Space, Inc [Member] Impulse Space, Inc. Impulse Space, Inc Debt Conversion Original Debt Interest Rate Of Debt Percentage of original issue discount Equity offerings. Equity Offerings [Member] Equity Offerings Related Party Transactions [Abstract] Investment Company, Tax Return of Capital Distribution Distributions to stockholders Net change in unrealized appreciation (depreciation) from investments. Net Change In Unrealized Appreciation Depreciation From Investments [Abstract] NET CHANGE IN UNREALIZED APPRECIATION/(DEPRECIATION) FROM INVESTMENTS: Equity Interest Issued Or Issuable By Type [Axis] Equity Interest Type S 2023 Dividends. S 2023 Dividends [Member] June 14, 2023 Accounts Receivable, after Allowance for Credit Loss, Current, Total Accounts Receivable, after Allowance for Credit Loss, Current Receivables from related party O 2023 Q2 Dividends. O 2023 Q2 Dividends [Member] June 14, 2023 Deferred Finance Costs Noncurrent Gross Unamortized deferred financing costs Accounts Payable and Accrued Liabilities [Member] Accounts payable, accrued expenses and other liabilities December 17, 2025 O2025Q4Dividends [Member] O2025Q4dividends. Commitments And Contingencies Commitments and contingencies Biotechnology Biotechnology. Biotechnology [Member] Weighted Average Grant Date Fair Value, Unvested beginning balance Weighted Average Grant Date Fair Value, Unvested ending balance Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value Series A Two Thousand Twenty Nine Notes [Member] Series A Two Thousand Twenty Nine Notes [Member] Series A 2029 Strike Price Investment Company, Market Value, Per Share Operating Lease, Liability, Total Operating Lease Liability Lease liability Investment owned at cost percentage. Investment Owned At Cost Percentage Cost, Percentage Stated interest and amortization of deferred financing costs and original issue discount. Stated Interest And Amortization Of Deferred Financing Costs And Original Issue Discount Total interest and amortization of deferred financing costs and original issue discount Debt Instrument Basis Spread On Variable Rate1 Variable interest rate Interest rate Dividends Payable [Line Items] Dividends Payable [Line Items] Total Lightning Step Technologies LLC [Member] Total Lightning Step Technologies LLC. Total Lightning Step Technologies, LLC Macrofab, Inc. Macrofab, Inc. [Member] Macrofab, Inc. Percentage of principal amount of loan or equipment financing advance. Percentage of Principal Amount of Loan Or Equipment Financing Advance Percentage of principal amount of loan or equipment financing advance Disposal/(Acquisition) of fixed assets. Disposal Acquisition Of Fixed Assets Disposal/(Acquisition) of fixed assets Commitments and contingencies. Commitments And Contingencies [Table] Commitments And Contingencies [Table] Fair Value Inputs Quantitative Information [Abstract] Open Forward Foreign Currency Contract, Identifier [Axis] Series A two thousand twenty eight notes. Series A Two Thousand Twenty Eight Notes [Member] Series A 2028 Series A Two Thousand Twenty Seven Notes [Member] Series A Two Thousand Twenty Seven Notes [Member] Series A 2027 Line Of Credit Facility [Abstract] Interest And Dividend Income Operating Total interest and dividend income Total interest and dividend income Convergent Dental Inc [Member] Convergent Dental, Inc. Convergent Dental, Inc. Interest Income (Expense), Net, Total Interest Income Expense Net Interest income Profit Loss Net increase/(decrease) in net assets resulting from operations NET INCREASE/(DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS Net increase/(decrease) in net assets resulting from operations Longterm Debt Type [Domain] Long-Term Debt, Type Weighted average shares outstanding, basic Weighted Average Number of Shares Outstanding, Basic, Total WEIGHTED AVERAGE SHARES OUTSTANDING - BASIC Denominator for basic weighted average shares Document Information [Line Items] Floor Rate Investment, Interest Rate, Floor Interest Rate Risks [Member] Interest rate risks. Interest Rate Risk Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Measured at Net Asset Value Fair Value Measured at Net Asset Value Per Share [Member] Property Plant And Equipment Type [Domain] Long-Lived Tangible Asset O 2021 Q1 Dividends. O 2021 Q1 Dividends [Member] March 23, 2021 Fee and Other Income [Abstract] Fee and other income. Fee and other income: Subsequent Events [Text Block] Subsequent Events Total Long-Term Debt, Total Outstanding debt Outstanding aggregate principal amount September 13, 2021 O 2021 Q3 Dividends. O 2021 Q3 Dividends [Member] Related Party Transactions Disclosure [Text Block] Related Party Transactions Debt instrument, interest rate terms Debt Instrument Interest Rate Terms Interest Rate Commonwealth Fusion Systems, LLC. Commonwealth Fusion Systems L L C [Member] Commonwealth Fusion Systems, LLC Variable Rate [Domain] Variable Rate Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent Percentage of net tax- exempt income Ticketure LLC [Member] Ticketure LLC. Ticketure LLC Stockholders' Equity Attributable to Parent, Ending Balance Stockholders' Equity Attributable to Parent, Beginning Balance Stockholders Equity Total net assets Schedule of Composition of Portfolio Investments by Geographic Region Schedule Of Portfolio Investments By Geographic Region [Table Text Block] Schedule of portfolio investments by geographic region. Statement Of Stockholders Equity [Abstract] Share-Based Payment Arrangement, Tranche Two [Member] Tranche Two Net investment income per share basic. Net Investment Income Per Share Basic NET INVESTMENT INCOME PER SHARE - BASIC Transfer to Investments Non-cash purchase of investments through issuance of common stock Valuation Technique [Domain] Valuation Approach and Technique CMR Surgical Limited [Member] CMR Surgical Limited. CMR Surgical Limited Use Of Estimates Use of Estimates Schedule Of Nonvested Share Activity Table [Text Block] Summary of Issuances, Vesting and Retirement of Shares under Plan December 17, 2025 O 2026 M1 Dividends [Member] O 2026 M1 dividends. Senior credit corp 2022 LLC. Senior Credit Corp 2022 LLC [Member] Senior Credit Corp 2022 LLC Commitments and contingencies. Commitments And Contingencies [Line Items] Commitments And Contingencies [Line Items] Over Allotment Option [Member] Overallotment Option Entity Address, Address Line Two Fair Value Disclosures [Text Block] Fair Value of Financial Instruments West West America [Member] West America. O2025Q1Dividends [Member] O2025Q1dividends. March 19, 2025 SBIC LP SBIC LP [Member] SBIC LP. September 2029 Notes September 2029 Notes [Member] September 2029 Notes. Fair Value, ending balance Fair Value, beginning balance Investment Owned At Fair Value Fair Value Total investments United States UNITED STATES Debt Instrument, Name [Domain] Debt Instrument, Name Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased Weighted-average price per share of common stock Derivative Instruments and Hedging Activities Disclosure [Abstract] Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] Gtxcel, Inc. Gtxcel Inc [Member] Nexii Building Solutions, Inc. Gtxcel, Inc. Plan Name [Domain] Plan Name Cirrascale Cloud Services LLC Member Cirrascale Cloud Services LLC. Cirrascale Cloud Services, LLC Cirrascale Cloud Services, LLC Increase (Decrease) in Other Operating Assets, Total Increase Decrease In Other Operating Assets (Increase)/Decrease in other assets Transactions Precedent. Valuation Technique Transactions Precedent [Member] Transaction Precedent Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] Credit Facility [Axis] Credit Facility Schedule Of Investments [Line Items] Schedule Of Investments [Line Items] Debt Securities [Member] Debt Securities Debt Percentage of net tax-exempt income Investment Company Threshold Percentage Of Net Tax Exempt Income Investment company threshold percentage of net tax exempt income. Schedule Of Line Of Credit Facilities [Text Block] Components of Interest Expense and Related Fees Beam Technologies, Inc. [Member] Beam Technologies, Inc.. Beam Technologies, Inc. Operating Lease Liabilities Payments Due [Abstract] Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Disclosure of summary of significant accounting policies. Disclosure Of Summary Of Significant Accounting Policies [Line Items] Disclosure Of Summary Of Significant Accounting Policies [Line Items] Related and Nonrelated Parties [Axis] WorkWell Prevention & Care Inc. Work Well Prevention And Care Inc [Member] WorkWell Prevention & Care Inc. O 2022 Q1 Dividends. O 2022 Q1 Dividends [Member] March 15, 2022 Debt Securities Available For Sale Measurement Input Range Lark Technologies, Inc. Lark Technologies Inc [Member] Lark Technologies, Inc. Ceiling rate Investment Ceiling Rate Investment ceiling rate. Entity Address, City or Town August 2026 notes member. August2026 Notes [Member] August 2026 Notes Investment, Issuer Affiliation [Domain] Debt [Member] Debt investments Debt Number of Reportable Segments Number of reporting segments Upgrade Master Pass - Thru Trust, Series 2025-ST5 (Estimated Yield 15.08%, maturity July 15, 2030) [Member] Upgrade Master Pass - Thru Trust, Series 2025-ST5 (Estimated Yield 15.08%, maturity July 15, 2030). Upgrade Master Pass - Thru Trust, Series 2025-ST5 (Estimated Yield 15.08%, maturity July 15, 2030) Security Exchange Name Credit Facility [Domain] Credit Facility Europe Europe [Member] Europe Asset coverage per unit measure per dollar. Asset Coverage Per Unit Measure Per Dollar Asset coverage per unit measure per dollar Debt Instrument Carrying Amount Carrying value Deferred Offering Costs Financing costs capitalized and deferred Auction Market Preferred Securities, Stock Series [Axis] Net proceeds for the sale of investments Proceeds from Sale of Investment Projects Proceeds from the sale of investments Cap Trin [Member] CapTrin. CapTrin Rinse, Inc. Rinse Inc [Member] Rinse, Inc. Measurement Input Type [Domain] Measurement Input Type Investment Date Investment, Acquisition Date Investment Owned At Cost Cost of investment Cost Stockholders Equity Note [Abstract] Maturity period description. Maturity Period Description Maturity period description Construction Technology Construction technology. Construction Technology Member Total cash, cash equivalents and restricted cash shown in the Consolidated Statements of Cash Flows Total cash, cash equivalents and restricted cash shown in the Consolidated Statements of Cash Flows Cash, cash equivalents and restricted cash Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Interest Paid Net Cash paid for interest Range [Member] Statistical Measurement Private common stock offerings. Private Common Stock Offerings [Member] Private Common Stock Offering Remaining percentage of fee for loan or advance. Remaining Percentage of Fee for Loan Or Advance Remaining percentage of fee for loan or advance Percentage of capital contribution invested in joint venture common equity. Percentage Of Capital Contribution Invested In Joint Venture Common Equity Percentage of capital contribution invested in joint venture common equity Allocated Share Based Compensation Expense Compensation Cost Recognized Compensation costs JV Partner. JV Partner [Member] JV Partner Document Period End Date Medical Sales Training Holding Company. Medical Sales Training Holding Company [Member] Medical Sales Training Holding Company Hypothetical Market Yield Hypothetical Market Yield. Measurement Input Hypothetical Market Yield [Member] Title Of Individual [Axis] Title of Individual Fair Value Measurements Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV Valuation Risk [Member] Valuation risk. Valuation Risk Investment, Issuer Affiliation [Axis] Two thousand nineteen restricted stock plan. Two Thousand Nineteen Restricted Stock Plan [Member] 2019 Restricted Stock Plan Direct Lending 2025 LLC [Member] Direct Lending 2025 LLC. Direct Lending 2025 LLC New JV Partner [Member] New JV Partner. New JV Partner Reporting Unit Percentage Of Fair Value In Excess Of Carrying Amount Fair value of companies investment percentage Statement Of Financial Position [Abstract] Secured Notes [Member] Secured notes Secured Notes Notes Due September 2029 [Member] Notes Due September 2029. 7.875% Notes Due September 2029 [Member] Vesting [Axis] RTS Holding, Inc. R T S Holding Inc [Member] RTS Holding, Inc. Class of Stock Industrials. Industrials [Member] Industrials Other Receivables Other receivables Fair ​value ​measurement ​with ​unobservable ​inputs ​reconciliation ​recurring​ basis ​asset ​sales ​paydowns. Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales Paydowns Proceeds from sales and paydowns Electric Hydrogen Co [Member] Electric Hydrogen Co. Electric Hydrogen Co. Total liabilities Liabilities Discount rates Lessee Operating Lease Discount Rate Ogee, Inc. [Member] Ogee, Inc. Ogee, Inc. Transfers And Servicing Of Financial Instruments Types Of Financial Instruments [Domain] Financial Instruments Weighted-average price per share of common stock Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Share Purchased Share based compensation arrangement by share based payment award per share weighted average price of share purchased. South America [Member] South Income Loss Attributable To Parent NET INVESTMENT INCOME/(LOSS) BEFORE TAXES Dilutive Securities, Effect on Basic Earnings Per Share Dilutive Securities, Effect on Basic Earnings Per Share, Total Adjustment for dilutive effect of Option Awards and Convertible Notes Advances Fair Value Disclosure Fair value Vertical Communications, Inc. Vertical Communications Inc [Member] Vertical Communications, Inc. Lessee Operating Lease Liability Payments Due Year Two 2028 Derivative Instruments, Gain (Loss) [Line Items] Restricted Cash, Total Restricted Cash Restricted cash Restricted Stock Awards Restricted Stock [Member] Foreign Exchange Forward [Member] Foreign Currency Forward Contracts Foreign Currency Forward Contract Variable Rate [Axis] Variable Rate ATM March 2029 And September 2029 Notes [Member] ATM March 2029 And September 2029 Notes [Member] ATM March 2029 and September 2029 Notes Series A Notes. Series A Notes [Member] Series A Notes Quip NYC, Inc. Quip N Y C Inc [Member] Quip NYC, Inc. Neurolens, Inc. Neurolens Inc [Member] Neurolens, Inc. Weighted average shares outstanding, diluted WEIGHTED AVERAGE SHARES OUTSTANDING - DILUTED Denominator for diluted weighted average shares Denominator for diluted weighted average shares Entity File Number Statement of Financial Position Location, Activity, Capitalization [Axis] Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Abstract] Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Abstract] Shares Vested and Forfeited Shares Vested and Forfeited Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested and Forfeited In Period Share based compensation arrangement by share based payment award equity instruments other than options vested and forfeited in period. Other Assets, Total Other Assets Other assets Percentage of fully diluted equity positions in portfolio companies. Percentage Of Fully Diluted Equity Positions In Portfolio Companies Percentage of fully diluted equity positions in portfolio companies Schedule of Net Realized and Unrealized Gains and Losses on Derivative Instruments Derivative Instruments, Gain (Loss) [Table Text Block] Cover Tax Basis Of Investments Gross Unrealized Depreciation Unrealized depreciation Measurement Input Type [Axis] Measurement Input Type Increase (Decrease) in Accounts Payable and Accrued Liabilities, Total Increase Decrease In Accounts Payable And Accrued Liabilities Increase/(Decrease) in accounts payable, accrued expenses and other liabilities Common stock shares issued and sold. Common Stock Shares Issued and Sold Common stock shares issued and sold Loan or advance fee payable days. Loan Or Advance Fee Payable Days Loan or advance fee payable number of days Number of portfolio companies loans. Number Of Portfolio Companies Loans Number of portfolio companies loans Investment Type Categorization [Member] Investments Origination and administrative agent fees Origination and Administrative Agent Fees Origination and administrative agent fees. Derivative, Gain (Loss) on Derivative, Net Derivative, Gain (Loss) on Derivative, Net, Total Derivative gains and losses on derivatives Lightning Step Technologies LLC [Member] Lightning Step Technologies LLC. Lightning Step Technologies, LLC Private Convertible Note Offering. Private Convertible Note Offering [Member] Private Convertible Note Offering Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized Common stock authorized for issuance Number of Operating Segments Number of operating segments Convertible Notes Redemption [Member] Convertible notes redemption. Convertible Notes Redemption Sale Of Stock Name Of Transaction [Domain] Sale of Stock Maple Raptor Acquisition Inc. (dba Rentsync) [Member] Maple Raptor Acquisition Inc. (dba Rentsync). Maple Raptor Acquisition Inc. (dba Rentsync) Segment Reporting Disclosure [Text Block] Segment Reporting General and Administrative Expense, Total General And Administrative Expense General and administrative Distributions reinvested. Distributions Reinvested Distributions reinvested Tax Basis Of Investments Cost For Income Tax Purposes Tax Cost of Investments Subsequent Event [Table] Emerald Cloud Lab, Inc. Emerald Cloud Lab Inc [Member] Emerald Cloud Lab, Inc. Dividend distributions Investment Income, Dividend Dividend income Deferred Costs, Total Deferred Costs Current And Noncurrent Deferred credit facility costs Centivo Corporation [Member] Centivo Corporation. Centivo Corporation Share Repurchase Program, Expiration Date Stock repurchase program, Expiration date Income Tax Disclosure [Table] Income tax disclosure. Operating Lease Expense Total lease expense Excise tax percentage. Excise Tax Percentage Excise tax Valuation technique enterprise value. Valuation Technique Enterprise Value [Member] Enterprise Value Unamortized deferred financing costs and premium Unamortized deferred financing costs and premium. Unamortized deferred financing costs and premium Number of portfolio unfunded commitments. Number Of Portfolio Unfunded Commitments Number of portfolio companies unfunded commitments Trinity Capital Adviser LLC Trinity Capital Adviser LLC [Member] Trinity Capital Adviser LLC. Debt Instrument Interest Rate Increase Decrease Additional rate of interest March 14, 2024 O2024Q1Dividends. O2024Q1Dividends [Member] Schedule Of Investments [Table] Schedule Of Investments [Table] Warrants Warrant investments. Warrant Warrant Investments Lessee Operating Lease Liability Maturity Table [Text Block] Summary of Future Minimum Payments under Operating Leases Emergy, Inc. Emergy Inc [Member] Emergy, Inc. Schedule Of Sharebased Compensation Restricted Stock And Restricted Stock Units Activity Table [Text Block] Summary of Issuances, Vesting and Retirement of Shares under Plan Derivative Instruments, Gain (Loss) [Table] Payment for Purchase, Investment, Operating Activity Purchase of investments, net of deferred fees Federal excise tax. Federal Excise Tax Federal excise tax Credit suisse credit facility member. Credit Suisse Credit Facility [Member] Credit Suisse Credit Facility Empower Financial Inc [Member] Empower Financial Inc. Empower Financial, Inc. Debt Instrument Redemption Description Debt instrument, redemption, description December 16, 2021 O 2021 Q4 Dividends. O 2021 Q4 Dividends [Member] Debt Instrument Redemption Price Percentage Of Principal Amount Redeemed Debt instrument, redemption price, percentage of principal amount redeemed Capital gain net income percentage. Capital Gain Net Income Percentage Capital gain net income percentage Portfolio turnover rate Investment Company, Portfolio Turnover Proceeds from Issuance of Long-Term Debt Proceeds from Issuance of Long-Term Debt, Total Issuance of Unsecured Notes, net of issuance costs Net proceeds from long term debt issuance Common Stock Shares Outstanding Ending balance, shares Beginning balance, shares Common stock, outstanding Shares outstanding, end of period Distributions Payable Distributions payable. Distribution payable Long Term Debt Average Amount Outstanding Weighted average outstanding balance iTutor.com, Inc. [Member] iTutor.com, Inc. iTutor.com, Inc. Additional aggregate offering price. Additional Aggregate Offering Price Increase in aggregate offering price Medical devices. Medical Devices [Member] Medical Devices Dividends [Domain] Dividends Document Transition Report Equity ATM Program [Member] Equity ATM Program Equity ATM Program Operating Expenses Total net expenses Total net expenses Asset coverage per unit measure. Asset Coverage Per Unit Measure Asset Coverage per Unit Lessee operating lease liability payments due after year four. Lessee Operating Lease Liability Payments Due After Year Four Thereafter SeaOn Global, LLC. SeaOn Global, LLC SeaOn Global, LLC [Member] Valuation Technique Discounted Cash Flow [Member] Discounted Cash Flows Slingshot Aerospace, Inc [Member] Slingshot Aerospace, Inc. Slingshot Aerospace, Inc Schedule Of Investments [Abstract] Statement Of Cash Flows [Abstract] Currency Risk [Member] Currency risk. Currency Risk Percentage of daily average aggregate value of outstanding loans and equipment financings. Percentage of daily average aggregate value of outstanding loans and equipment financings Percentage of daily average aggregate value of outstanding loans and equipment financings Stock Issued During Period Value New Issues Issuance of common stock, net of issuance costs Common stock issuance, aggregate purchase price Transportation technology. Transportation Technology [Member] Transportation Technology Stockholders' Equity Stockholders Equity Note Disclosure [Text Block] Control And Affiliate Investments One [Member] Control and affiliate investments one. Control and Affiliate Investments Earnings Per Share [Text Block] Earnings Per Share Northeast America. Northeast America [Member] Northeast Pendulum Therapeutics, Inc. Pendulum Therapeutics Inc [Member] Pendulum Therapeutics Inc BWell Connected Health Inc [Member] BWell Connected Health Inc. B.Well Connected Health, Inc. Variable advance rate on eligible second lien loans Variable Advance Rate On Eligible Second Lien Loans Variable advance rate on eligible second lien loans. Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value Fair Value, Ending balance Fair Value, Beginning balance Investment Table [Text Block] Summary of Composition of Portfolio Investments by Industry Wisetack, Inc. Wisetack, Inc. [Member] Wisetack, Inc. Partner Type of Partners' Capital Account, Name [Domain] Hospitalists Now, Inc. Hospitalists Now, Inc. Hospitalists Now Inc [Member] Variable interest rate Investment, Basis Spread, Variable Rate S 2022 One Dividends. S 2022 One Dividends [Member] June 15, 2022 Connectivity. Connectivity [Member] Connectivity Line Of Credit Facility [Line Items] Line Of Credit Facility [Line Items] Notes Due March 2029 [Member] Notes Due March 2029. 7.875% Notes Due March 2029 [Member] S 2022 Dividends. S 2022 Dividends [Member] March 15, 2022 June 15, 2022 Assets [Abstract] ASSETS Partner Type [Axis] Investment company asset coverage ratio. Investment Company Asset Coverage Ratio Asset coverage ratio Repayments of Debt Repayment of Unsecured Notes Repayment of Unsecured Notes Percentage of embedded conversion feature of convertible notes Percentage of embedded conversion feature of convertible notes. Percentage Of Embedded Conversion Feature Of Convertible Notes Document Fiscal Year Focus Dividends Payable Nature Type Other assets Other Assets [Member] Other Assets Investment Owned Percent of Cash and Cash Equivalents Investment owned percent of cash and cash equivalents. Cash and Cash Equivalents, Percentage Eight point five percentage notes. Eight Point Five Percentage Notes [Member] 8.5% Notes Net Cash Provided By Used In Investing Activities [Abstract] Cash flows provided by/(used in) investing activities: Percentage of capital contribution invested in joint venture debt notes. Percentage Of Capital Contribution Invested In Joint Venture Debt Notes Percentage of capital contribution invested in joint venture debt notes EOT, Interest rate Investment Interest Rate During Period Investment interest rate during period. New Accounting Pronouncements And Changes In Accounting Principles [Abstract] Derivative, Contract End Date Settlement Date Convertible Notes Payable [Member] Convertible Notes Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture, Total Stock Issued During Period Value Share Based Compensation Stock based compensation Average Market Value Per Units. Average Market Value Per Units Average Market Value per Unit Fair value measurement with unobservable inputs reconciliation recurring basis asset accretion of OID, EOT and PIK payments. Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Accretion Of O I D, E O T and P I K Payments Accretion of OID, EOT, and PIK payments Convertible Notes Debt instrument, conversion of principal amount Carrying value of Convertible Notes Convertible Notes, net of $764 and $1,243, respectively, of unamortized deferred financing costs and discount Midwest America. Midwest America [Member] Midwest Organization, consolidation and presentation of financial statements. Organization Consolidation And Presentation Of Financial Statements [Line Items] Organization Consolidation And Presentation Of Financial Statements [Line Items] Affiliate Investments Investment Affiliated Issuer One [Member] Investment affiliated issuer one. San Diego Office San Diego Office [Member] San Diego office. Southeast America. Southeast America [Member] Southeast Fair Value Disclosures [Abstract] Commitments And Contingencies Disclosure [Abstract] CANADA Canada Earthdaily Constellation Holdings LP [Member] Earthdaily Constellation Holdings LP. Earthdaily Constellation Holdings, LP Lessee Operating Lease Liability Payments Due Next Twelve Months 2027 Investment Company Distribution To Shareholders Per Share Distributions Distributions Sale Of Stock Consideration Received On Transaction Additional proceeds from issuance of common stock Net Income (Loss) Available to Common Stockholders, Basic, Total Net Income Loss Available To Common Stockholders Basic Numerator for basic earnings per share Investment percentage on net assets Investment Owned Percent Of Net Assets Foreign domiciled portfolio investment percentage on net assets Credit facility Long-Term Line of Credit, Total Line Of Credit Initial commitment Securities Borrowed And Loaned Policy Security Deposits Debt Instrument Derivative Instrument [Axis] Daring Foods, Inc. Daring Foods Inc [Member] Daring Foods, Inc. Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Unrecognized compensation costs Total Assets Fair Value Disclosure Total Investments including cash and cash equivalents and derivative instruments Subsidiary Sale Of Stock [Axis] Sale of Stock DerivativesPolicyTextBlock Derivatives, Policy [Policy Text Block] Net investment income per share diluted. Net Investment Income Per Share Diluted NET INVESTMENT INCOME PER SHARE - DILUTED Vital Connect Inc [Member] Vital Connect, Inc. Vital Connect, Inc. Proceeds from Maturities, Prepayments and Calls of Securities, Operating Activities Proceeds from sales and paydowns of investments Proceeds from sales and paydowns of investments Debt Instrument, Fair Value Disclosure, Total Debt Instrument Fair Value Fair value Net Cash Provided By Used In Investing Activities Net cash provided by/(used in) investing activities Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 Transfers into Level 3 Title of 12(b) Security Partners' Capital Account, Return of Capital Return of capital Investment Income Net NET INVESTMENT INCOME Hadrian Automation, Inc. [Member] Hadrian Automation, Inc. Hadrian Automation, Inc. Income Tax Disclosure [Line Items] Income tax disclosure. All Space Networks Limited [Member] All Space Networks Limited. All.Space Networks, Limited. Related and Nonrelated Parties [Domain] Deferred tax liability Deferred tax liability. Scenario Analysis Scenario Analysis Member Scenario Analysis. Income Tax Disclosure [Text Block] Income Taxes Energy And Resource Technology [Member] Energy and resource technology. Energy & Resource Technology Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year 2026 Document Information [Table] Increase Decrease In Operating Capital [Abstract] Change in operating assets and liabilities Fair value granted stock options. Fair Value Granted Stock Options Fair Value of Granted Stock Fair value measurement with unobservable inputs reconciliation recurring basis asset change in unrealized appreciation/(depreciation). Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Change In Unrealized Appreciation Depreciation Net change in unrealized appreciation/(depreciation) Net change in unrealized appreciation/(depreciation) Weighted average effective interest rate. Weighted Average Effective Interest Rate Weighted average effective interest rate Income Tax Disclosure [Abstract] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Paid In Capital in Excess of Par Value Additional Paid In Capital [Member] Escrow Receivables Escrow Receivables [Member] Escrow Receivables. Kymeta Corporation Kymeta Corporation [Member] Kymeta Corporation. Molekule Group, Inc. Molekule Group Inc Member Molekule Group, Inc. Molekule Group, Inc. Fair Value Measurement Frequency [Domain] Measurement Frequency Share Repurchase Program, Authorized, Amount Stock repurchase program, Authorized amount Statement of Income Location, Balance [Axis] Trading Symbol Schedule of information about senior securities. Schedule Of Information About Senior Securities Table [Text Block] Summary of Information about Senior Securities Net change in Unrealized (Depreciation)/ Appreciation Debt and Equity Securities, Unrealized Gain (Loss) Debt and Equity Securities, Unrealized Gain (Loss), Total Related Party Transaction [Table] Schedule Of Related Party Transactions By Related Party [Table] December 2026 notes member. December2026 Notes [Member] December 2026 Notes Number of foreign domiciled portfolio companies. Number Of Foreign Domiciled Portfolio Companies Number of foreign domiciled portfolio companies Director [Member] Director Subsequent Event Type [Axis] Allocated expenses Allocated expenses. Allocated expenses to Trinity Capital Adviser, LLC Allocated expenses to Trinity Capital Adviser, LLC Dividend payable declaration date. Dividend Payable Declaration Date Declaration Date Investment Company Financial Highlights [Abstract] Investment Company Financial Highlights [Abstract] Net Cash Provided By Used In Financing Activities [Abstract] Cash flows provided by/(used in) financing activities Fair Value Measurements Recurring [Member] Fair Value, Recurring Entitiy Ex Transition Period Stated interest expense and amortization of deferred finance costs. Stated Interest Expense And Amortization Of Deferred Finance Costs Total interest and amortization of deferred financing costs Lessee Operating Lease Liability Payments Due Total Involuntary Liquidating Preference per Unit Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items] Fair value measurement with unobservable inputs reconciliation recurring basis asset non-cash conversion. Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Non Cash Conversion Non-cash conversions Interest and Debt Expense, Total Interest and Debt Expense Interest expense and other debt financing costs Statement Equity Components [Axis] Equity Components Trinity Capital Holdings. Trinity Capital Holdings [Member] Trinity Capital Holdings Equity Component [Domain] Equity Component Investment owned at fair value percentage. Investment Owned At Fair Value Percentage Fair Value, Percentage Fair Value By Asset Class [Axis] Asset Class Investment Company Financial Highlights [Text Block] Financial Highlights Eyelit Technologies Inc [Member] Eyelit Technologies, Inc. Eyelit Technologies, Inc. Investment income. Investment Income Total investment income Formlogic Corporation [Member] Formlogic Corporation. Formlogic Corporation Business Combination [Axis] Business Acquisition Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures Issuance of restricted stock awards, shares I P O [Member] Initial Public Offering Investment Company Investment Income Loss Per Share Net investment income Edeniq, Inc. Edeniq Inc [Member] Edeniq, Inc. Hermeus Corporation [Member] Hermeus Corporation. Hermeus Corporation Lendflow, Inc [Member] Lendflow, Inc. Lendflow, Inc. Crowdtap, Inc. Crowdtap, Inc. Crowdtap Inc [Member] Crowdtap, Inc. VitaCup, Inc. Vita Cup Inc [Member] VitaCup, Inc. Total B Well Connected Health Inc [Member] Total B Well Connected Health Inc. Total B.Well Connected Health, Inc. Corporate Joint Venture [Member] Corporate Joint Venture Joint Venture Formation, Formation Date Joint venture agreement date Investment Income Net [Abstract] INVESTMENT INCOME: Maximum Maximum [Member] Dividend Payable Date To Be Paid Day Month And Year Payment Date Tax Basis Of Investments Unrealized Appreciation Depreciation Net Unrealized appreciation/(depreciation) Net unrealized appreciation/(depreciation) from investments Adjustments to Additional Paid in Capital, Convertible Debt with Conversion Feature Additional paid-in capital in connection with Convertible Notes Redemption Debt Instrument, Convertible, Conversion Ratio Variable interest rate Statistical Measurement Range [Axis] Common Stock Value Common stock, value Common stock, $0.001 par value per share (200,000,000 authorized, 87,903,645 and 81,518,294 shares issued and outstanding as of March 31, 2026 and December 31, 2025, respectively) Net Income Loss Available To Common Stockholders Diluted Numerator for diluted earnings per share Multi Sector Holdings One [Member] Multi Sector Holdings One. Multi-Sector Holdings Line Of Credit Facility Expiration Date1 Line of credit facility expiration date Dividends [Axis] Dividends Beginning balance Equity, Including Portion Attributable to Noncontrolling Interest Equity, Including Portion Attributable to Noncontrolling Interest, Total Ending balance Secured Overnight Financing Rate (SOFR) [Member] Capital commitments Investment Company, Committed Capital Number of portfolio companies equipment financing. Number Of Portfolio Companies Equipment Financing Number of portfolio companies equipment financing O2020Q2Dividends. O2020Q2Dividends [Member] August 10, 2020 Form Energy Inc [Member] Form Energy Inc. Form Energy Inc. Artificial intelligence and automation. Artificial Intelligence And Automation Member Artificial Intelligence & Automation AST and Science, LLC [Member] AST & Science, LLC. AST & Science, LLC Cellares Corporation [Member] Cellares Corporation. Cellares Corporation Investment Company Financial Ratios [Abstract] Ratio/Supplemental Data: Upgrade Master Pass - Thru Trust [Member] Upgrade Master Pass - Thru Trust. Upgrade Master Pass - Thru Trust Amortization Of Financing Costs Amortization of deferred financing costs Under Technologies, Inc. Under Technologies Inc [Member] Under Technologies, Inc. Fair value of debt investment portfolio Fair value of debt investment portfolio. Fair Value Of Debt Investment Portfolio Non-control / Non-affiliate investments member. Non Control Non Affiliate Investments [Member] Non-Control / Non-Affiliate Investments Private offerings. Private Offerings [Member] Private Offerings Long Term Debt Term Debt securities, term Investment fee and other income. Investment Fee and Other Income Total fee and other income Schedule of Debt [Table Text Block] Schedule of Outstanding Unsecured Notes Investment Company Expense Ratio Including Incentive Fee Ratio of total expenses to average net assets Qualifying assets percentage on total assets. Qualifying Assets Percentage On Total Assets Qualifying assets percentage on total assets Settlement of Convertible Notes Repayments of Convertible Debt Schedule Of Dividends Payable [Text Block] Summary of Distributions Declared Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] Accounts Payable And Other Accrued Liabilities Accounts payable, accrued expenses and other liabilities Outstanding payable Related Party Transaction [Line Items] Related Party Transaction [Line Items] Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Table] Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Table] Entity Registrant Name Debt Disclosure [Text Block] Borrowings Subsequent Events [Abstract] Debt security payment period. Debt Security Payment Period Debt security payment due Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] Investment, Affiliated Issuer, Controlled [Member] Control Investments SOFR Secured Overnight Financing Rate Sofr Overnight Index Swap Rate [Member] Measurement Frequency Fair Value By Measurement Frequency [Axis] Proceeds From Issuance Of Common Stock Proceeds from issuance of common stock Issuance of common stock, net of issuance costs Net proceeds after deducting commissions to sales agents on shares sold SaaS SaaS. SaaS [Member] SaaS (Software as a Service) Investment Company [Abstract] Line Of Credit Facility Initial Period Line of credit facility initial period. Line of credit facility initial period Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Portfolio Investments and Cash and Cash Equivalents, Cost Portfolio investments and cash and cash equivalents, cost. Total Portfolio Investments and Cash and Cash Equivalents, Cost Total Portfolio Investments and Cash and Cash Equivalents, Cost Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques Table [Text Block] Summary of Significant Unobservable Inputs Used to Measure The Fair Value Of The Level 3 Portfolio Investments Project Frog, Inc. Project Frog, Inc. Project Frog Inc [Member] S 2022 Three Dividends. S 2022 Three Dividends [Member] December 15, 2022 2025 Notes Two Thousand Twenty Five Notes [Member] 2025 Notes member. Net assets abstract. Net Assets [Abstract] NET ASSETS Entity Common Stock, Shares Outstanding Lessee Operating Lease Remaining Lease Term Remaining lease term Ambient Photonics Inc [Member] Ambient Photonics, Inc. Ambient Photonics, Inc. Limited Partner Limited Partner [Member] Net asset value, end of period Net asset value, beginning of period NET ASSET VALUE PER SHARE Net Asset Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Shares Granted Number of shares granted (in shares) Key Bank Term Credit Facility Member KeyBank Term Credit Facility. KeyBank Term Credit Facility Steno Agency Inc [Member] Steno Agency, Inc. Steno Agency, Inc. Assets Total assets Presto Automation, Inc [Member] Presto automation, Inc. Presto Automation, Inc Key Bank credit facility member. Key Bank Credit Facility [Member] KeyBank Credit Facility O 2026 M6 Dividends [Member] O 2026 M6 dividends. March 18, 2026 Income Statement [Abstract] Hi-Power, LLC. Hi Power L L C [Member] Hi-Power, LLC Share Based Compensation Option And Incentive Plans Policy Stock-Based Compensation Weighted Average [Member] Weighted Average Sale Of Stock Number Of Shares Issued In Transaction Option to purchase additional common stock shares Supply chain technology. Supply Chain Technology [Member] Supply Chain Technology Stock Issued During Period Shares New Issues Issuance of common stock, net of issuance costs, shares Issuance of common stock in initial public offering, net of issuance costs, shares Market index of investment securities. Market Index Of Investment Securities Market index of investment securities Interest Rate Investment Interest Rate Terms Investment interest rate terms. S 2022 Two Dividends. S 2022 Two Dividends [Member] September 15, 2022 Earnings Per Share Diluted [Abstract] Earnings per common share - diluted December 22, 2020 O2020Q4Dividends. O2020Q4Dividends [Member] O 2026 M5 Dividends [Member] O 2026 M5 dividends. March 18, 2026 Earnings Per Share, Diluted, Total Earnings Per Share Diluted NET CHANGE IN NET ASSETS RESULTING FROM OPERATIONS PER SHARE - DILUTED Earnings/(Loss) per common share - diluted Auction Market Preferred Securities, Stock Series, Title [Domain] Debt Conversion Original Debt Amount1 Debt conversion, original issue discount of debt Debt ATM Program Debt ATM Program [Member] Debt ATM Program. O 2023 Q3 Dividends. O 2023 Q3 Dividends [Member] September 13, 2023 Title Of Individual With Relationship To Entity [Domain] Title of Individual Class A Class A [Member] Class A. City Area Code Upgrade Master Pass Thru Trust [Member] Upgrade Master Pass Thru Trust. Upgrade Master Pass - Thru Trust Slope Tech Inc [Member] Slope Tech Inc. Slope Tech, Inc. Payments of Capital Distribution Cash distributions paid Cash distributions paid Fair Value Investments Entities That Calculate Net Asset Value Per Share [Table] Fair Value Investments Entities That Calculate Net Asset Value Per Share [Table] Deposits, Total Deposits Security deposits Uveye, Inc. Uveye, Inc. [Member] Uveye, Inc. Proceeds from Lines of Credit, Total Proceeds From Lines Of Credit Borrowings under Credit Facilities Borrowings under Credit Facility Principal amount of debt Secured Notes, net of $1,333 and $1,467, respectively, of unamortized deferred financing costs Aggregate principal amount of unsecured notes CCP InterGalactic Buyer, LLC CCP InterGalactic Buyer, LLC [Member] CCP InterGalactic Buyer, LLC. Debt instrument default interest rate. Debt instrument default interest rate Default interest rate PatientFi, Inc. [Member] PatientFi, Inc.. PatientFi, Inc. Shares available for issuance increased Share-based compensation arrangement by share-based payment award, number of shares available for grant increased Share-based compensation arrangement by share-based payment award, number of shares available for grant increased. O2024Q2Dividends. O2024Q2Dividends [Member] June 13, 2024 Investment Company Financial Highlights Roll Forward Per Share Data: Human resource technology. Human Resource Technology [Member] Human Resource Technology Human Resource Technology Derivative Liability, Subject to Master Netting Arrangement, before Offset Derivative Liabilities, Fair value Derivative Liabilities, Fair value Derivative Liabilities, Fair Value Investments [Abstract] Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures, Total Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures Issuance of restricted stock awards Distributable Earnings / (Accumulated Deficit) Retained Earnings [Member] Increase (Decrease) in Deposit Assets, Total Increase Decrease In Deposit Other Assets Increase/(Decrease) in security deposits Cash and Cash Equivalents [Axis] Equipment Financings Equipment financing. Equipment Financing [Member] Equipment Financing Other healthcare services. Other Healthcare Services [Member] Other Healthcare Services Employee Benefits And Share Based Compensation Compensation and benefits Compensation costs Share-Based Payment Arrangement, Noncash Expense, Total Share Based Compensation Stock-based compensation O2025Q2Dividends [Member] O2025Q2dividends. June 18, 2025 Net change in unrealized appreciation/(depreciation) on Level 3 investments still held Fair value measurement with unobservable inputs reconciliation recurring basis asset net change in unrealized appreciation/depreciation on investments. Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Net Change In Unrealized Appreciation Depreciation On Investments Measurement Input Price Volatility [Member] Volatility Payments Of Stock Issuance Costs Offering costs of common stock Common stock issuance costs Multi-Sector Holdings Multi Sector Holdings [Member] Multi sector holdings. Statement of Financial Position Location, Activity, Capitalization [Domain] Finance and insurance. Finance And Insurance [Member] Finance and Insurance Lightforce Orthodontics, Inc. [Member] Lightforce Orthodontics, Inc. Lightforce Orthodontics, Inc. Fair Value Inputs Level1 [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) Class Of Stock [Line Items] Class Of Stock [Line Items] Net Cash Provided By Used In Financing Activities Net cash provided by/(used in) financing activities Apiject Holdings Inc [Member] Apiject Holdings, Inc. Apiject Holdings, Inc. DrinkPak, LLC DrinkPak, LLC [Member] DrinkPak, LLC. DrinkPak, LLC Management and Incentive Fees Expense Management and Incentive Fees Expense, Total Management fees, carried interest, or other advisory fees Investments, Fair Value Disclosure, Total Investments Fair Value Disclosure Total Investments at fair value Total Level 3 Investments Elucent Medical, Inc. [Member] Elucent Medical, Inc. Elucent Medical, Inc. Derivative Contract [Domain] Non-Control and Non-Affiliate investments issuer. Non-Control and Non-Affiliate investments issuer [Member] Non-Control / Non-Affiliate Investments Non-US [Member] Foreign Domiciled Entity Interactive Data Current Investment company offering costs. Investment Company Offering Costs Offering costs Statement of Income Location, Balance [Domain] Xytech Systems LLC [Member] Xytech Systems LLC. Xytech Systems, LLC Net Cash Provided By Used In Operating Activities [Abstract] Cash flows provided by/(used in) operating activities: Distributions Distributions Policy [Text Block] Distributions. Repayments Of Lines Of Credit Repayments of lines of credit Repayments under Credit Facility O 2023 Q1 Dividends. O 2023 Q1 Dividends [Member] March 14, 2023 New Accounting Pronouncements And Changes In Accounting Principles [Text Block] Recent Accounting Pronouncements Commitments Fair Value Disclosure Outstanding refunded commitments Accretion Amortization Of Discounts And Premiums Investments Accretion of original issue discounts and end of term payments on investments O2024Q3Dividends. O2024Q3Dividends [Member] September 18, 2024 Aggregate principal amount redeemed Debt Instrument Aggregate Principal Amount Redeemed Debt instrument aggregate principal amount redeemed Common Stock, Dividends, Per Share, Declared Aggregate dividends declared Underwriters. Underwriters [Member] Underwriters Trinity Investor JV I LLC. Trinity Investor J V I L L C [Member] Trinity Investor J V I L L C Entity Tax Identification Number Per share market value at end of period Market price per share Longterm Debt Type [Axis] Long-Term Debt, Type Metabolon, Inc. [Member] Metabolon, Inc. Metabolon, Inc. Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block] Organization and Basis of Presentation Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 Net realized gain/(loss) Local Phone Number Eterneva, Inc. Eterneva Inc [Member] Eterneva, Inc. Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement, Total Fair Value Measurement Input Revenue Multiple [Member] Revenue Multiple Accounting Policies [Abstract] Stock Issued During Period Shares Dividend Reinvestment Plan Issuance of common stock pursuant to distribution reinvestment plan, shares Stock Issued During Period Shares Restricted Stock Award Forfeited Retired and forfeited shares of restricted stock, shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Fair Value Share-based compensation arrangement by share-based payment award, options, fair value. Fair value of option award Lessee Operating Lease Liability Payments Due Year Four 2030 Class of Stock [Domain] Class of Stock Shares available for issuance Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Non-statutory stock options total Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 Unrecognized compensation costs, weighted average period Schedule Of Stock By Class [Table] Schedule Of Stock By Class [Table] EVO Transportation and Energy Services, Inc. [Member] EVO Transportation and Energy Services, Inc. EVO Transportation & Energy Services, Inc. Entity Emerging Growth Company Interest and dividend income. Interest and Dividend Income [Abstract] Interest and dividend income: Canadian overnight repo rate average. Canadian Overnight Repo Rate Average [Member]