Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Internal Noninvestment Grade Internal Noninvestment Grade [Member] Trading Arrangement: Trading Arrangement [Axis] Maximum Maximum [Member] Muon Space, Inc. Muon Space, Inc. [Member] Muon Space, Inc. Special distribution sourced from net investment income (in dollars per share) Investment Company, Distribution to Shareholders, Net Investment Income, Per Share Investment Company, Distribution to Shareholders, Net Investment Income, Per Share Statistical Measurement [Domain] Statistical Measurement [Domain] Common Distributions Distributions Payable [Text Block] Distributions Payable Subsequent Event Subsequent Event [Member] Document Fiscal Year Focus Document Fiscal Year Focus Derivatives Available for Offset Derivative Liability, Subject to Master Netting Arrangement, Asset Offset Black Scholes Option Pricing Model Valuation Technique, Option Pricing Model [Member] Adjustment to Compensation, Amount Adjustment to Compensation Amount Financial Instrument [Axis] Financial Instrument [Axis] Segment Reporting [Abstract] Dependent on milestones Contractual Obligation, Contingent Commitments Contractual Obligation, Contingent Commitments Schedule of Fair Value, Assets Measured on Recurring Basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Common stock, par value $0.01 per share Common Stock, Value, Issued Amortization Period Amortization Period [Member] Amortization Period Certamen Ventures Inc. Certamen Ventures Inc. [Member] Certamen Ventures Inc. Schedule of Long-Term Debt Instruments Schedule of Long-Term Debt Instruments [Table Text Block] Entertainment Software Entertainment Software [Member] Entertainment Software Line of Credit Line of Credit [Member] Entity Ex Transition Period Entity Ex Transition Period Restatement Determination Date Restatement Determination Date Derivative Instrument [Axis] Derivative Instrument [Axis] Investment, Unaffiliated Issuer Investment, Unaffiliated Issuer [Member] Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Interest coverage ratio, minimum Debt Instrument, Covenant, Interest Coverage Ratio, Minimum Debt Instrument, Covenant, Interest Coverage Ratio, Minimum Fundings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances Don't Run Out, Inc. Don't Run Out, Inc. [Member] Don't Run Out, Inc. Food Products Food Products [Member] Food Products Net investment income, before taxes Net Investment Income Communication Software Communication Software [Member] Communication Software MXP Prime Platform GmbH MXP Prime Platform GmbH [Member] MXP Prime Platform GmbH Common Stock, Shares Issued, Not Disclosed Common Stock, Shares Issued, Not Disclosed Common Stock, Shares Issued, Not Disclosed Number of lenders Line Of Credit Facility, Number Of Lenders Line Of Credit Facility, Number Of Lenders Investments [Domain] Investments [Domain] Social/Platform Software Social/Platform Software [Member] Social/Platform Software Base management fee payable Increase (Decrease) in Management Fee Payable Related Party Agreements and Transactions Related Party Transactions Disclosure [Text Block] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Entity Address, State or Province Entity Address, State or Province PEO Total Compensation Amount PEO Total Compensation Amount Commercial Transportation Commercial Transportation [Member] Commercial Transportation Common stock par value (in dollars per share) Common Stock, Par or Stated Value Per Share Number of portfolio companies Investment Company, Financial Commitment to Investee, Number Of Portfolio Companies Investment Company, Financial Commitment to Investee, Number Of Portfolio Companies Other accrued expenses and liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Weighted average shares of common stock outstanding, Basic (in shares) Weighted average shares of common stock outstanding for period, basic (in shares) Basic weighted average shares of common stock outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Schedule of Related Party Transactions Schedule of Related Party Transactions [Table Text Block] Workmate Labs, Inc. Workmate Labs, Inc. [Member] Workmate Labs, Inc. Amortization and accretion of premiums and discounts, net Accretion (Amortization) of Discounts and Premiums, Investments Assets pledged as collateral Debt Instrument, Collateral Amount Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Schedule of Investments [Abstract] Unfunded Loan Commitment Unfunded Loan Commitment [Member] Flink SE Flink SE [Member] Flink SE Dividends declared (in dollars per share) Common Stock, Dividends, Per Share, Declared, Ordinary Common Stock, Dividends, Per Share, Declared, Ordinary Fair Value of Unfunded Commitment Liability Investment Company, Financial Commitment to Investee, Future Amount, Fair Value Investment Company, Financial Commitment to Investee, Future Amount, Fair Value Mirelo AI GmbH Mirelo AI GmbH [Member] Mirelo AI GmbH Sylva, Inc. Sylva, Inc. [Member] Sylva, Inc. Special distribution sourced from net realized short-term capital gains (in dollars per share) Investment Company, Distribution to Shareholders, Net Realized Short-Term Capital Gains, Per Share Investment Company, Distribution to Shareholders, Net Realized Short-Term Capital Gains, Per Share Healthcare Technology Systems Healthcare Technology Systems [Member] Healthcare Technology Systems Entity Address, City or Town Entity Address, City or Town Derivative instruments Derivative, Fair Value, Net Statement of Financial Position [Abstract] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Class of Stock [Axis] Class of Stock [Axis] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Preferred stock distributions paid Payments of Ordinary Dividends, Preferred Stock and Preference Stock Debt Investments Debt Investments [Member] Debt Investments Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Number of transfers out of Level 3 Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Number Of Transfers Out Of Level 3 Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Number Of Transfers Out Of Level 3 Advance rate Line of Credit Facility, Advance Rate Line of Credit Facility, Advance Rate Level 2 Fair Value, Inputs, Level 2 [Member] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Net investment income (in dollars per share) Investment Company, Investment Income (Loss), Per Share, Basic Total Commitment Total commitment Line of Credit Facility, Maximum Borrowing Capacity Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Interest rate Investment Interest Rate Interest rate floor Investment, Interest Rate, Floor Net increase (decrease) in net assets resulting from operations per common share (in dollars per share) Net increase (decrease) in net assets resulting from operations per common share (in dollars per share) Basic and diluted net increase (decrease) in net assets resulting from operations per share of common stock (in dollars per share) Investment Company, Net Asset Value, Per Share, Period Increase (Decrease) Investments Schedule of Investments [Text Block] Dividends [Domain] Dividends [Domain] Debt instrument, variable interest rate, type flag Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] Preferred stock distributions from distributable earnings Dividends, Preferred Stock Subsequent Event Type [Axis] Subsequent Event Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Schedule of Long-Term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Non-cash Collateral Received Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Security Not Offset Total operating expenses Investment Income, Investment Expense Ratio of expenses to average net asset value Investment Company, Expense Ratio before Incentive Allocation Amortization of debt fees and issuance costs Amortization of costs and other fees Amortization of Debt Issuance Costs Aggregated investment holdings percent of gross assets where third party valuation is not required Fair Value Measurements, Third Party Valuation Not Required Threshold For Aggregated Investments, Percent Of Gross Assets Fair Value Measurements, Third Party Valuation Not Required Threshold For Aggregated Investments, Percent Of Gross Assets Related Party [Axis] Related and Nonrelated Parties [Axis] Schedule of Level 3 Commitment Liabilities Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Average net asset value Investment Company, Average Net Assets Document Period End Date Document Period End Date Change in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Cash Collateral Received Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash Not Offset Preferred stock, shares outstanding (in shares) Beginning balance, preferred stock, outstanding (in shares) Ending balance, preferred stock, outstanding (in shares) Preferred Stock, Shares Outstanding Face amount Debt Instrument, Face Amount Equity Equity [Text Block] Debt term Debt Instrument, Term Elder and Disabled Care Elder and Disabled Care [Member] Elder and Disabled Care Construction Finance Corporation Construction Finance Corporation [Member] Construction Finance Corporation Current borrowing capacity Debt Instrument, Covenant, Aggregate Principal Balance, Secured Status Threshold Debt Instrument, Covenant, Aggregate Principal Balance, Secured Status Threshold Appex Group, Inc. Appex Group, Inc. [Member] Appex Group, Inc. Investment Management Agreement - Incentive Rate, Realized Capital Gains, Net Investment Management Agreement - Incentive Rate, Realized Capital Gains, Net [Member] Investment Management Agreement - Incentive Rate, Realized Capital Gains, Net Relay Commerce, Inc. Relay Commerce, Inc. [Member] Relay Commerce, Inc. Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Entity Shell Company Entity Shell Company Ao1 Holdings Inc. Ao1 Holdings Inc. [Member] Ao1 Holdings Inc. Percent of the investment portfolio that will receive valuation recommendations from a third party valuation firm each quarter Fair Value Measurements, Third Party Quarterly Valuation, Percent Of Investment Portfolio Fair Value Measurements, Third Party Quarterly Valuation, Percent Of Investment Portfolio Net Increase in Net Assets per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Earnings Per Share [Abstract] Healthcare Services Healthcare Services [Member] Healthcare Services Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Document Fiscal Period Focus Document Fiscal Period Focus Non-cash Collateral Received Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Security Not Offset Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Communications and Networking Communications and Networking [Member] Communications and Networking Total liabilities Liabilities Luxury Presence, Inc. Luxury Presence, Inc. [Member] Luxury Presence, Inc. Discount Rate Measurement Input, Discount Rate [Member] Ocrolus Inc. Ocrolus Inc. [Member] Ocrolus Inc. Habyt GmbH (f/k/a Common Living Inc.) Habyt GmbH (f/k/a Common Living Inc.) [Member] Habyt GmbH (f/k/a Common Living Inc.) Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Manufactured Networks, Inc. Manufactured Networks, Inc. [Member] Manufactured Networks, Inc. Business Applications Software Business Applications Software [Member] Business Applications Software Company Selected Measure Name Company Selected Measure Name Household Products Household Products [Member] Household Products Schedule of Investments [Table] Schedule of Investments [Table] Cart.com, Inc. Cart.com, Inc. [Member] Cart.com, Inc. General Media and Content General Media and Content [Member] General Media and Content Gross unrealized losses for tax purposes Investment, Tax Basis, Unrealized Loss Schedule of Financial Support For Nonconsolidated Entity Schedule of Financial Support For Nonconsolidated Entity [Table Text Block] Schedule of Financial Support For Nonconsolidated Entity Unrealized Gain/(Loss) Unrealized Gain (Loss) on Derivatives Ratios / Supplemental Data Investment Company, Financial Ratios [Abstract] Investment In Non-Accrual Status Investment In Non-Accrual Status [Member] Investment In Non-Accrual Status Balance Outstanding Long-Term Debt, Gross Schedule of Derivatives Not Designated as Hedging Instruments Derivatives Not Designated as Hedging Instruments [Table Text Block] Debt Investments Debt Securities [Member] Credit Facility [Domain] Credit Facility [Domain] Asset Class [Domain] Asset Class [Domain] Net realized and unrealized gains/(losses) Gain (Loss), Investment and Derivative, Operating, before Tax [Abstract] Related Party Transactions [Abstract] Cash Flows from Operating Activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Compensation Amount Outstanding Recovery Compensation Amount Operating expenses excluding incentive fees to average net asset value Investment Company, Operating Expense Ratio Before Incentive Allocation Investment Company, Operating Expense Ratio Before Incentive Allocation Individual: Individual [Axis] Net realized losses on investments Realized Gain (Loss), Investments And Foreign Currency Transactions Realized Gain (Loss), Investments And Foreign Currency Transactions Warrant Investments Warrant [Member] Weighted average shares of common stock outstanding, Diluted (in shares) Weighted average shares of common stock outstanding for period, diluted (in shares) Diluted weighted average shares of common stock outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Entity Emerging Growth Company Entity Emerging Growth Company Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Gross transfers out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Credit Loss [Abstract] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Skyflow Inc. Skyflow Inc. [Member] Skyflow Inc. Multimedia and Design Software Multimedia and Design Software [Member] Multimedia and Design Software Foreign currency forward contracts Derivative Liabilities Subject to Master Netting Agreement Derivative Liability, Subject to Master Netting Arrangement, before Offset Schedule of Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Per Share Data Investment Company, Financial Highlights [Roll Forward] Award Timing Predetermined Award Timing Predetermined [Flag] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Level 1 Fair Value, Inputs, Level 1 [Member] Business to Business Marketplace Business to Business Marketplace [Member] Business to Business Marketplace Consumer Finance Consumer Finance [Member] Consumer Finance Unfunded commitments dependent on milestones Investment Company, Financial Commitment To Investee, Contingent Commitment Investment Company, Financial Commitment To Investee, Contingent Commitment Organization, Consolidation and Presentation of Financial Statements [Abstract] Amount Derivative Asset, Notional Amount Haven Energy Inc. Haven Energy Inc. [Member] Haven Energy Inc. Period from date of investment when each new portfolio investment will be reviewed by a third party valuation firm Fair Value Measurements, Third Party Valuation, Period From Initial Investment Fair Value Measurements, Third Party Valuation, Period From Initial Investment Net investment income to average net asset value Investment Company, Investment Income (Loss) Ratio Accordion feature, higher borrowing capacity option Line of Credit Facility, Accordion Feature, Higher Borrowing Capacity Option Line of Credit Facility, Accordion Feature, Higher Borrowing Capacity Option All Executive Categories All Executive Categories [Member] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Repayments under revolving credit facility Repayments of Long-Term Lines of Credit Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Outstanding borrowings Total Long-Term Debt, Fair Value Unused fee Line of Credit Facility, Commitment Fee Amount Rally Network, Inc. Rally Network, Inc. [Member] Rally Network, Inc. 2027 Notes 2027 Notes [Member] 2027 Notes Concentration Risk Type [Domain] Concentration Risk Type [Domain] Offsetting Assets [Table] Offsetting Assets [Table] Pair Team, PBC Pair Team, PBC [Member] Pair Team, PBC Debt Disclosure [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Asset coverage ratio, minimum Debt Instrument, Covenant, Asset Coverage Ratio, Minimum Debt Instrument, Covenant, Asset Coverage Ratio, Minimum Operating Segments Segment Reporting [Text Block] Minimum Minimum [Member] Revolving Credit Facility Revolving credit facility Long-Term Line of Credit Consumer Non-Durables Consumer Non-Durables [Member] Consumer Non-Durables Quick Commerce Ltd. Quick Commerce Ltd. [Member] Quick Commerce Ltd. Investment Type [Axis] Investment Type [Axis] Common stock distributions paid Payments of Ordinary Dividends, Common Stock Expiration Date Trading Arrangement Expiration Date Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Liabilities Liabilities [Abstract] Income Statement Location [Axis] Location, Statement of Income, Balance [Axis] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Net Amount of Derivative Assets Derivative Asset, Subject to Master Netting Arrangement, after Offset and Deduction Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Changes in net asset value due to: Investment Company, Investment Income (Loss) from Operations, Per Share [Abstract] Affiliated Entity Affiliated Entity [Member] Common stock distributions from distributable earnings Dividends, Common Stock 2027 Notes, net of deferred offering costs of $164 and $267, respectively Unsecured Debt Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Derivative [Table] Derivative [Table] Accretion of discount Investment Company, Accretion Of Discount, Ratio Investment Company, Accretion Of Discount, Ratio Net investment income, after taxes Net investment income Investment Income, Operating, after Expense and Tax Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock issued (in shares) Sale of Stock, Number of Shares Issued in Transaction Schedule of Carrying Values and Estimated Fair Values of Debt Instruments Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Exercise Price Award Exercise Price Related Party Transaction [Axis] Related Party Transaction [Axis] New commitments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Additions Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Additions Activehours, Inc. Activehours, Inc. [Member] Activehours, Inc. Document Quarterly Report Document Quarterly Report Repayments under existing revolvers Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Repayments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Repayments Investment Management Agreement - Incentive Rate, Quarterly Hurdle Rate Investment Management Agreement - Incentive Rate, Quarterly Hurdle Rate [Member] Investment Management Agreement - Incentive Rate, Quarterly Hurdle Rate FitOn, Inc. FitOn, Inc. [Member] FitOn, Inc. Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Measurement input Investment Company, Investment Owned, Measurement Input Borrowings Debt Disclosure [Text Block] Amortized cost Amortized Cost Investment Owned, Cost Schedule of Contractual Obligation, Fiscal Year Maturity Contractual Obligation, Fiscal Year Maturity [Table Text Block] Base management fee Base management fee Management Fee Expense Deferred issuance costs Debt Issuance Costs, Net Capital gains incentive fee Incentive Fee Expense, Capital-Gain-Based FlashParking, Inc. FlashParking, Inc. [Member] FlashParking, Inc. Open Forward Foreign Currency Contract, Identifier [Axis] Open Forward Foreign Currency Contract, Identifier [Axis] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Financial Highlights Investment Company, Financial Highlights [Text Block] Equity Component [Domain] Equity Component [Domain] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Measurement Input Type [Domain] Measurement Input Type [Domain] Gain (loss) included in earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Fundings and purchases of investments Payment for Purchase, Investment, Operating Activity US $ Value at Settlement Date Foreign Currency Contract, Asset, Fair Value Disclosure Weighted average portfolio yield on debt investments Investment Company, Weighted Average Yield, Ratio Investment Company, Weighted Average Yield, Ratio Investment income Investment Income, Net [Abstract] Adoption Date Trading Arrangement Adoption Date Interest rate Debt Instrument, Interest Rate, Stated Percentage Counterparty Name [Domain] Counterparty Name [Domain] Probability-Weighted Expected Return Method Valuation Technique, Probability-Weighted Expected Return Method [Member] Valuation Technique, Probability-Weighted Expected Return Method Total net assets Beginning balance Ending balance Net asset value at end of period Equity, Attributable to Parent Bitonic Technology Labs, Inc. Bitonic Technology Labs, Inc. [Member] Bitonic Technology Labs, Inc. Net increase (decrease) in net assets to average net asset value Investment Company, Increase (Decrease) In Net Assets To Average Net As, Percentages Net Value Investment Company, Increase (Decrease) In Net Assets To Average Net As, Percentages Net Value Offsetting Assets [Line Items] Offsetting Assets [Line Items] JOKR S.à r.l. JOKR S.à r.l. [Member] JOKR S.à r.l. Assets Assets [Abstract] EBITDA Multiples Measurement Input, EBITDA Multiple [Member] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Accounting Policies [Abstract] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Unrealized gains on foreign currency forward contracts Unrealized Gains On Foreign Currency Forward Contracts Unrealized Gains On Foreign Currency Forward Contracts Insider Trading Policies and Procedures [Line Items] Investment, Issuer Affiliation [Domain] Investment, Issuer Affiliation [Domain] Interest income from investments Interest Income, Operating Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Nakdcom One World AB Nakdcom One World AB [Member] Nakdcom One World AB Lively, Inc. Lively, Inc. [Member] Lively, Inc. Human Capital Services Human Capital Services [Member] Human Capital Services Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Investment Management Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income Exceeds Catch-Up Threshold Investment Management Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income Exceeds Catch-Up Threshold [Member] Investment Management Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income Exceeds Catch-Up Threshold Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Simpplr Inc. Simpplr Inc. [Member] Simpplr Inc. Database Software Database Software [Member] Database Software Number of operating segments Number of Operating Segments Entity Central Index Key Entity Central Index Key Weighted Average Weighted Average [Member] Investment Owned, Balance, Principal Amount Investment Owned, Balance, Principal Amount [Member] Investment Owned, Balance, Principal Amount All Adjustments to Compensation All Adjustments to Compensation [Member] Net assets Equity [Abstract] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Net cash provided by/(used in) operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Income Statement [Abstract] Document Transition Report Document Transition Report Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Schedule of Investments [Line Items] Schedule of Investments [Line Items] Medical Software and Information Services Medical Software and Information Services [Member] Medical Software and Information Services Net realized gains/(losses) on foreign currency forward contracts Realized Gain (Loss), Foreign Currency Transaction, after Tax Operating expenses Operating Expenses [Abstract] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Gross unrealized gains for tax purposes Investment, Tax Basis, Unrealized Gain Net realized and unrealized gain/(losses) Gain (Loss), Investment and Derivative, Operating, and Foreign Currency Transaction, after Tax Ephemeral Solutions, Inc. Ephemeral Solutions, Inc. [Member] Ephemeral Solutions, Inc. Net change in unrealized gains/(losses) on investments Debt and Equity Securities, Unrealized Gain (Loss) Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Consumer Products and Services Consumer Products and Services [Member] Consumer Products and Services Other Commitments [Domain] Other Commitments [Domain] Revolving Period Revolving Period [Member] Revolving Period Interest rate margin Investment, Basis Spread, Variable Rate City Area Code City Area Code Dance GmbH Dance GmbH [Member] Dance GmbH All Individuals All Individuals [Member] Subsequent Events Subsequent Events [Text Block] Investment, Issuer Name [Domain] Investment, Issuer Name [Domain] Volatility Measurement Input, Price Volatility [Member] HI LLC (Kernel) HI LLC (Kernel) [Member] HI LLC (Kernel) Name Forgone Recovery, Individual Name Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Arcadia Power, Inc. Arcadia Power, Inc. [Member] Arcadia Power, Inc. Net realized (gains)/losses on investments and foreign currency forward contracts Debt and Equity Securities, Realized Gain (Loss) Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Real Estate Services Real Estate Services [Member] Real Estate Services Impact of prepayments during the period Investment Company, Impact Of Prepayments, Ratio Investment Company, Impact Of Prepayments, Ratio Statement [Line Items] Statement [Line Items] Total assets Assets Interest expense and amortization of fees Interest Expense, Operating Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Industry Sector [Axis] Industry Sector [Axis] Upward adjustment, percent of issuance proceeds Debt Instrument, Covenant, Equity Balance, Upward Adjustment, Percent Of Issuance Proceeds Debt Instrument, Covenant, Equity Balance, Upward Adjustment, Percent Of Issuance Proceeds Merama Inc. Merama Inc. [Member] Merama Inc. Logistics Logistics [Member] Logistics Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Sandbox VR, Inc. Sandbox VR, Inc. [Member] Sandbox VR, Inc. PEO PEO [Member] Minted, Inc. Minted, Inc. [Member] Minted, Inc. Credit Risk Credit Loss, Financial Instrument [Text Block] Outstanding Principal Investment Owned, Balance, Principal Amount Derivatives Available for Offset Derivative Asset, Subject to Master Netting Arrangement, Liability Offset Tax cost of investments Investment, Tax Basis, Cost Interest Rate Type Risk Interest Rate Type Risk [Member] Interest Rate Type Risk Cash Equivalents Cash Equivalents [Member] Other Financial Services Other Financial Services [Member] Other Financial Services Information Services (B2C) Information Services (B2C) [Member] Information Services (B2C) Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Business/Productivity Software Business/Productivity Software [Member] Business/Productivity Software Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Total distributable earnings (loss) Retained Earnings [Member] Revolving Credit Facility Revolving Credit Facility [Member] Investment Company [Abstract] Planet A Foods GmbH Planet A Foods GmbH [Member] Planet A Foods GmbH Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Schedule of Fair Value Measurement Inputs and Valuation Techniques Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Shares of common stock outstanding (in shares) Beginning balance (in shares) Ending balance (in shares) Shares of common stock outstanding at end of period (in shares) Common stock outstanding (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Financial Support for Nonconsolidated Legal Entity [Table] Financial Support for Nonconsolidated Legal Entity [Table] Diluted net investment income per share of common stock (in dollars per share) Earnings Per Share, Diluted Entity Current Reporting Status Entity Current Reporting Status Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Idelic Inc. Idelic Inc. [Member] Idelic Inc. 2026 Investment Company, Financial Support to Investee Contractually Required, Not Provided, Amount, Year One Investment Company, Financial Support to Investee Contractually Required, Not Provided Amount, Remainder Of The Year Amount1 Interest Receivable, prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Computer Hardware Computer Hardware [Member] Computer Hardware Net change in unrealized gains/(losses) on investments Unrealized Gain (Loss) on Investments Income incentive fee Incentive Fee Expense Income incentive fees to average net asset value Investment Company, Incentive Allocation to Average Net Assets, Percentage Debt Instrument, Interest Period [Axis] Debt Instrument, Interest Period [Axis] Debt Instrument, Interest Period 2027 Investment Company, Financial Support to Investee Contractually Required, Not Provided, Amount, Year Two Investment Company, Financial Support to Investee Contractually Required, Not Provided, Amount, Year Two Total return based on net asset value per share Investment Company, Total Return Hydrow, Inc. Hydrow, Inc. [Member] Hydrow, Inc. Borrowings under revolving credit facility Proceeds from Long-Term Lines of Credit Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash provided by / (used in) operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] 2028 Investment Company, Financial Support to Investee Contractually Required, Not Provided, Amount, Year Three Investment Company, Financial Support to Investee Contractually Required, Not Provided, Amount, Year Three Schedule of Offsetting Assets Offsetting Assets [Table Text Block] Cash Flows from Financing Activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Unused Commitment Line of Credit Facility, Remaining Borrowing Capacity Financial Instruments [Domain] Financial Instruments [Domain] Number of subsidiaries Number of Wholly Owned Subsidiaries Number of Wholly Owned Subsidiaries Other fees Other Income Coupon income Investment Company, Coupon Income, Ratio Investment Company, Coupon Income, Ratio Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Underlying Securities Award Underlying Securities Amount E-Commerce - Personal Goods E-Commerce - Personal Goods [Member] E-Commerce - Personal Goods O 2026 M7 Aggregate Dividends O 2026 M7 Aggregate Dividends [Member] O 2026 M7 Aggregate Dividends Schedule of Financial Highlights Investment Company, Financial Highlights [Table Text Block] Investment, Issuer Name [Axis] Investment, Issuer Name [Axis] Preferred stock Preferred Stock [Member] Additional term extension period Investment Company, Term, Optional Extension Period Investment Company, Term, Optional Extension Period Principal payments and sale proceeds received from investments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales and Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales and Settlements Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] Interest rate EOT Investment, Interest Rate, End of Term Investment, Interest Rate, End of Term Quantum Circuits, Inc. Quantum Circuits, Inc. [Member] Quantum Circuits, Inc. Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Unfunded commitments at beginning of period Unfunded commitments and backlog of potential future commitments at end of period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Schedule of Dividends Declared Dividends Declared [Table Text Block] Supplemental Disclosures of Cash Flow Information: Interest Paid, Including Capitalized Interest, Operating and Investing Activities [Abstract] Net change in unrealized (gains)/losses on investments and foreign currency forward contracts Unrealized Gain (Loss) On Investments And Foreign Currency Forward Contracts Unrealized Gain (Loss) On Investments And Foreign Currency Forward Contracts Current Fiscal Year End Date Current Fiscal Year End Date Shares Investment Owned, Balance, Shares Accretion of end-of-term payments Investment Company, Accretion Of End Of Term Payments, Ratio Investment Company, Accretion Of End Of Term Payments, Ratio Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Derivative [Line Items] Derivative [Line Items] Related Party Transaction [Domain] Related Party Transaction [Domain] FabFitFun, Inc. FabFitFun, Inc. [Member] FabFitFun, Inc. Net change in unrealized gains/(losses) on foreign currency forward contracts Unrealized Gain (Loss), Foreign Currency Transaction, after Tax Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Securities Act File Number Securities Act File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Investment holdings percent of gross assets where third party valuation is not required (less than) Fair Value Measurements, Third Party Valuation Not Required Threshold, Percent Of Gross Assets Fair Value Measurements, Third Party Valuation Not Required Threshold, Percent Of Gross Assets Investments at fair value (amortized cost of $373,901 and $367,496, respectively) Fair Value Total portfolio company investments Investment Owned, Fair Value Equity Investments Equity Securities [Member] Deferred offering costs Deferred Costs, Current Recovery of Erroneously Awarded Compensation Disclosure [Line Items] MA Micro Limited MA Micro Limited [Member] MA Micro Limited Administration agreement expenses Administrative Fees Expense Measure: Measure [Axis] Fair value, beginning balance Fair value, ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Roofstock, Inc. (f/k/a Mynd Management, Inc.) Roofstock, Inc. (f/k/a Mynd Management, Inc.) [Member] Roofstock, Inc. (f/k/a Mynd Management, Inc.) PlanHub, Inc. PlanHub, Inc. [Member] PlanHub, Inc. Equity Components [Axis] Equity Components [Axis] Application Software Application Software [Member] Application Software Class of Stock [Line Items] Class of Stock [Line Items] Zions Bancorporation, N.A. Zions Bancorporation, N.A. [Member] Zions Bancorporation, N.A. Entity Interactive Data Current Entity Interactive Data Current OpenLoop Health, Inc. OpenLoop Health, Inc. [Member] OpenLoop Health, Inc. Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Net realized and unrealized gains and losses on derivative instruments Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Deferred credit facility costs Debt Issuance Costs, Line of Credit Arrangements, Net Entity Small Business Entity Small Business Financial Services Financial Services [Member] Financial Services Termination Date Trading Arrangement Termination Date Other Commitments [Axis] Other Commitments [Axis] Subsequent Events [Abstract] Expirations / Terminations Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Principal payments and proceeds from investments Proceeds from Disposition of Investment, Operating Activity Document Type Document Type 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] Commercial Services Commercial Services [Member] Commercial Services Fair Value as of Grant Date Award Grant Date Fair Value Net asset value per common share (in dollars per share) Net asset value at beginning of period (in dollars per share) Net asset value at end of period (in dollars per share) Net Asset Value Per Share Significant Accounting Policies Significant Accounting Policies [Text Block] FloatMe Corp. FloatMe Corp. [Member] FloatMe Corp. Interest rate PIK Investment, Interest Rate, Paid in Kind Unrealized losses on foreign currency forward contracts Unrealized Losses On Foreign Currency Forward Contracts Unrealized Losses On Foreign Currency Forward Contracts Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Arrangement Duration Trading Arrangement Duration Subsequent Event [Line Items] Subsequent Event [Line Items] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Non-Qualifying Assets Non-Qualifying Assets [Member] Non-Qualifying Assets Other income Noninterest Income, Other [Abstract] Net change in unrealized gains (losses) (in dollars per share) Investment Company, Unrealized Gain (Loss) on Investment, Per Share Environmental Services Environmental Services [Member] Environmental Services Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Commitments and Contingencies (Note 7) Commitments and Contingencies Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Payment-in-kind interest income Payment-in-kind interest on investments Interest Income, Operating, Paid in Kind Total investments, including derivative instruments Assets, Fair Value Disclosure, Including Derivative Instruments Assets, Fair Value Disclosure, Including Derivative Instruments Executive Category: Executive Category [Axis] Counterparty Name [Axis] Counterparty Name [Axis] Incode Technologies, Inc. Incode Technologies, Inc. [Member] Incode Technologies, Inc. 2031 Investment Company, Financial Support to Investee Contractually Required, Not Provided, Amount, Year Four Investment Company, Financial Support to Investee Contractually Required, Not Provided, Amount, Year Four All Award Types Award Type [Domain] Net realized gains (losses) (in dollars per share) Investment Company, Realized Gain (Loss) on Investment, Per Share Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Trendly, Inc. Trendly, Inc. [Member] Trendly, Inc. Energy Energy [Member] Energy Revenue Multiples Measurement Input, Revenue Multiple [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Financial Support for Nonconsolidated Legal Entity [Line Items] Financial Support for Nonconsolidated Legal Entity [Line Items] PEO Name PEO Name Other accrued expenses and liabilities Accrued Liabilities and Other Liabilities Restricted cash Restricted cash Restricted Cash Investment, Issuer Affiliation [Axis] Investment, Issuer Affiliation [Axis] Excise taxes paid Income Tax Paid, before Refund Received Credit facility, average interest rate Line of Credit Facility, Interest Rate During Period Worldwide Freight Logistics Limited Worldwide Freight Logistics Limited [Member] Worldwide Freight Logistics Limited Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Income and non-income weighted average portfolio yield on debt investments Investment Company, Income And Non-Income Producing, Weighted Average Yield, Ratio Investment Company, Income And Non-Income Producing, Weighted Average Yield, Ratio Total interest expense and amortization of fees Interest Expense, Debt Prepaid expenses and other assets Prepaid Expense and Other Assets Liability Class [Axis] Liability Class [Axis] Earth Services, Inc. Earth Services, Inc. [Member] Earth Services, Inc. Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Total cash, cash equivalents and restricted cash shown in the statements of cash flows Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Base management fee payable Management Fee Payable Cash Collateral Received Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset Forum Brands, LLC Forum Brands, LLC [Member] Forum Brands, LLC Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Incentive fee percentage Management and Service Fees, Incentive Rate Net Amount of Derivative Liabilities Derivative Liability, Subject to Master Netting Arrangement, after Offset and Deduction Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Advisory Agreement Advisory Agreement [Member] Advisory Agreement Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Organization Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Debt Instrument [Axis] Debt Instrument [Axis] Subsequent Event [Table] Subsequent Event [Table] Expirations/terminations of unfunded commitments Fees And Other Income, Expirations And Terminations Of Unfunded Commitments Fees And Other Income, Expirations And Terminations Of Unfunded Commitments Basic net investment income per share of common stock (in dollars per share) Earnings Per Share, Basic Long-Term Debt, Type [Domain] Long-Term Debt, Type [Domain] Gross Profit Multiples Measurement Input, Gross Profit Multiples [Member] Measurement Input, Gross Profit Multiples Measurement Input Type [Axis] Measurement Input Type [Axis] Risk Free Rate Measurement Input, Risk Free Interest Rate [Member] Hover Inc. Hover Inc. [Member] Hover Inc. Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Base management fee percentage Management and Service Fees, Base Rate Financial Software Financial Software [Member] Financial Software Award Type Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Information Technology Information Technology [Member] Information Technology Net unrealized losses for tax purposes Investment, Tax Basis, Unrealized Gain (Loss) Total distributable loss Retained Earnings (Accumulated Deficit) Business Products and Services Business Products and Services [Member] Business Products and Services Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common stock Common Stock [Member] Unfunded commitments Unfunded Commitments Unfunded commitments at end of period Unfunded commitments Investment Company, Financial Support to Investee Contractually Required, Not Provided, Amount Hermeus Corporation Hermeus Corporation [Member] Hermeus Corporation Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Interest cost Interest Expense, Debt, Excluding Amortization Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Derivative Contract [Domain] Derivative Contract [Domain] Concentration risk percentage Concentration Risk, Percentage Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Educational Software Educational Software [Member] Educational Software Equity Awards Adjustments Equity Awards Adjustments [Member] Income incentive fee payable Increase (Decrease) in Incentive Fee Payable Probability Weighting of Alternative Outcomes Measurement Input, Probability-Weighting of Aleternative Outcomes [Member] Measurement Input, Probability-Weighting of Aleternative Outcomes Total liabilities and net assets Liabilities and Equity Net realized gains/(losses) on investments Realized Investment Gains (Losses) Employee Stock Option Share-Based Payment Arrangement, Option [Member] Funding and purchases of investments, at cost Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Income incentive fee payable Incentive Fee Payable, Income-Based Debt Instrument, Interest Period [Domain] Debt Instrument, Interest Period [Domain] Debt Instrument, Interest Period [Domain] Industry Sector [Domain] Industry Sector [Domain] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Asset Class [Axis] Asset Class [Axis] Related Party [Domain] Related and Nonrelated Parties [Domain] Percentage of net assets Investment Owned, Net Assets, Percentage Tabular List, Table Tabular List [Table Text Block] Transfers between investments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Paid-in capital in excess of par value Additional Paid in Capital Software Development Applications Software Development Applications [Member] Software Development Applications Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Minimum stockholders' equity balance Debt Instrument, Covenant, Equity Balance, Minimum Debt Instrument, Covenant, Equity Balance, Minimum Name Awards Close in Time to MNPI Disclosures, Individual Name Credit facility, average outstanding borrowings Line of Credit Facility, Average Outstanding Amount Investment, Identifier [Axis] Investment, Identifier [Axis] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] General and administrative expenses General and Administrative Expense Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Alloy Technologies, Inc. Alloy Technologies, Inc. [Member] Alloy Technologies, Inc. Path Robotics, Inc. Path Robotics, Inc. [Member] Path Robotics, Inc. Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Distributions to common shareholders (in dollars per share) Distributions from distributable earnings (in dollars per share) Investment Company, Distribution to Shareholders, Per Share Homeward, Inc. Homeward, Inc. [Member] Homeward, Inc. Preferred stock, par value $0.01 per share (50,000,000 shares authorized; 525 shares issued and outstanding) Preferred Stock, Value, Issued Investment Management Agreement Investment Management Agreement [Member] Investment Management Agreement Adjustment to Compensation: Adjustment to Compensation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Class of Stock [Domain] Class of Stock [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Hedging Designation [Axis] Hedging Designation [Axis] Capital gains incentive fee Incentive Fee Expense, Capital Gains Incentive Fee, Net Incentive Fee Expense, Capital Gains Incentive Fee, Net Foreign currency forward contracts Foreign Exchange Forward [Member] Aerospace and Defense Aerospace and Defense [Member] Aerospace and Defense Etched.ai, Inc. Etched.ai, Inc. [Member] Etched.ai, Inc. Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Name Measure Name Healthcare Devices and Supplies Healthcare Devices and Supplies [Member] Healthcare Devices and Supplies Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Debt Instrument [Line Items] Debt Instrument [Line Items] Well Dot, Inc. Well Dot, Inc. [Member] Well Dot, Inc. Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Paid-in capital in excess of par value Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Committed capital Investment Company, Committed Capital Dividends [Axis] Dividends [Axis] Interest receivable Interest Receivable Name Trading Arrangement, Individual Name Number of components Related Party Transaction, Number Of Components Related Party Transaction, Number Of Components Expiring during: Contractual Obligation, Fiscal Year Maturity [Abstract] Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Term Measurement Input, Expected Term [Member] Karat Financial Technologies Incorporated Karat Financial Technologies Incorporated [Member] Karat Financial Technologies Incorporated Revolving Credit Facility Credit Facility Credit Facility [Member] Credit Facility Investment Management Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income Investment Management Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income [Member] Investment Management Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Company Selected Measure Amount Company Selected Measure Amount 2027 Notes 2027 Notes, Net [Member] 2027 Notes, Net Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Network Management Software Network Management Software [Member] Network Management Software Net change in unrealized gains (losses) on Level 3 investments held Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss) Entity Address, Address Line Two Entity Address, Address Line Two Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Total investment and other income Gross Investment Income, Operating Non-PEO NEO Non-PEO NEO [Member] Senior Notes Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One Life and Health Insurance Life and Health Insurance [Member] Life and Health Insurance Excise tax expense Investment Income, Operating, Tax Expense (Benefit) Award Timing Method Award Timing Method [Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Net change in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Investment Management Agreement - Incentive Rate, Quarterly Catch-Up Threshold Investment Management Agreement - Incentive Rate, Quarterly Catch-Up Threshold [Member] Investment Management Agreement - Incentive Rate, Quarterly Catch-Up Threshold Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Portfolio turnover rate Investment Company, Portfolio Turnover Called investments Proceeds from Maturities, Prepayments and Calls of Securities, Operating Activities Net increase (decrease) in net assets resulting from operations Net (decrease) increase in net assets resulting from operations Net increase (decrease) in net assets resulting from operations Net increase (decrease) in net assets resulting from operations Net Income (Loss) Attributable to Parent Excise tax payable Sales and Excise Tax Payable Long-Term Debt, Type [Axis] Long-Term Debt, Type [Axis] Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table Text Block] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Investments Investments [Member] Balance Sheet Location [Axis] Location, Statement of Financial Position, Balance [Axis] Discounted Cash Flows Valuation Technique, Discounted Cash Flow [Member] Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Debt investments with floating interest rates Debt Investments, Floating Interest Rate [Member] Debt Investments, Floating Interest Rate Ocrolus Inc. Parker Group Inc. [Member] Parker Group Inc. Infrastructure Infrastructure [Member] Infrastructure Foreign currency adjustments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss) Automation/Workflow Software Automation/Workflow Software [Member] Automation/Workflow Software Foreign currency forward contracts Derivative Assets Subject to Master Netting Agreement Derivative Asset, Subject to Master Netting Arrangement, before Offset Backlog amount Backlog of potential future commitments Investment Company, Financial Support To Investee Contractually Required, Not Provided, Backlog Amount Investment Company, Financial Support To Investee Contractually Required, Not Provided, Backlog Amount Hybrid Equity Investment Hybrid Equity Investment [Member] Hybrid Equity Investment E-Commerce - Clothing and Accessories E-Commerce - Clothing and Accessories [Member] E-Commerce - Clothing and Accessories Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Investment Management Agreement - Incentive Rate, Annualized Hurdle Rate Investment Management Agreement - Incentive Rate, Annualized Hurdle Rate [Member] Investment Management Agreement - Incentive Rate, Annualized Hurdle Rate Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Secured Overnight Financing Rate (SOFR) [Member]