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75020 - Statement - Consolidated Statements of Assets and Liabilities (unaudited)
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75030 - Statement - Consolidated Statements of Assets and Liabilities (Parenthetical)
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75040 - Statement - Consolidated Statements of Operations (unaudited)
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75070 - Statement - Consolidated Schedule of Investments
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75070 - Statement - Consolidated Schedule of Investments [Default]
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75080 - Statement - Consolidated Schedule of Investments (Parenthetical)
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75080 - Statement - Consolidated Schedule of Investments (Parenthetical) [Default]
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75090 - Statement - Consolidated Schedule of Investments (PIK Investment)
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75090 - Statement - Consolidated Schedule of Investments (PIK Investment) [Default]
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995480 - Disclosure - Organization
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995490 - Disclosure - Summary of Significant Accounting Policies
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995500 - Disclosure - Related Party Transactions
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995510 - Disclosure - Investments
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995520 - Disclosure - Fair Value of Financial Instruments
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995530 - Disclosure - Commitments and Contingencies
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995540 - Disclosure - Borrowings
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995550 - Disclosure - Federal Income Tax
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995560 - Disclosure - Financial Highlights
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995570 - Disclosure - Capital Transactions
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995580 - Disclosure - Consolidated Schedule of Investments In and Advances To Affiliates
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995590 - Disclosure - Subsequent Events
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995600 - Disclosure - Summary of Significant Accounting Policies (Policies)
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995610 - Disclosure - Summary of Significant Accounting Policies (Tables)
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995620 - Disclosure - Related Party Transactions (Tables)
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995630 - Disclosure - Investments (Tables)
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995640 - Disclosure - Fair Value of Financial Instruments (Tables)
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995650 - Disclosure - Commitments and Contingencies (Tables)
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995660 - Disclosure - Borrowings (Tables)
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995670 - Disclosure - Federal Income Tax (Tables)
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995680 - Disclosure - Financial Highlights (Tables)
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995690 - Disclosure - Capital Transactions (Tables)
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995700 - Disclosure - Consolidated Schedule of Investments In and Advances To Affiliates (Tables)
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995710 - Disclosure - Organization (Additional Information) (Details)
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995720 - Disclosure - Summary of Significant Accounting Policies - Reportable Segments (Details)
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995730 - Disclosure - Summary of Significant Accounting Policies - Cash and Cash Equivalents (Details)
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995740 - Disclosure - Summary of Significant Accounting Policies - Income Taxes (Details)
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995750 - Disclosure - Summary of Significant Accounting Policies - Deferred Debt Issuance Costs (Details)
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995760 - Disclosure - Related Party Transactions - Narrative (Details)
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995770 - Disclosure - Related Party Transactions - Expenses and Distributions (Details)
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995780 - Disclosure - Related Party Transactions - Schedule Of Related Party Transactions (Parenthetical) (Details)
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995790 - Disclosure - Investments - Narrative (Details)
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995800 - Disclosure - Investments - By Composition and Domicile (Details)
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995820 - Disclosure - Investments - By Industry (Details)
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995830 - Disclosure - Investments - By Portfolio Concentration (Details)
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995840 - Disclosure - Investments - By Portfolio Concentration (Parenthetical) (Details)
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995850 - Disclosure - Fair Value of Financial Instruments - Transfers Between Levels (Details)
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995860 - Disclosure - Fair Value of Financial Instruments - Narrative (Details)
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995870 - Disclosure - Fair Value of Financial Instruments - Investment Portfolio Measured at Fair Value on a Recurring Basis (Details)
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995880 - Disclosure - Fair Value of Financial Instruments - Significant Level 3 Inputs (Details)
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995890 - Disclosure - Fair Value of Financial Instruments - Level 3 Rollforward (Details)
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995900 - Disclosure - Fair Value of Financial Instruments - Carrying Values and Fair Values of Debt (Details)
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995910 - Disclosure - Commitments and Contingencies (Details)
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995920 - Disclosure - Commitments and Contingencies (Additional Information) (Details)
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995930 - Disclosure - Borrowings - Unsecured Notes Narrative (Details)
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995940 - Disclosure - Borrowings - Natixis Facility Narrative (Details)
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995950 - Disclosure - Borrowings - Unsecured Notes Interest Expense and Average Outstanding Balance (Details)
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995960 - Disclosure - Borrowings - Banc of California Credit Facility Narrative (Details)
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995970 - Disclosure - Borrowings - Banc of California Credit Facility Interest Expense and Average Outstanding Balance (Details)
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995980 - Disclosure - Borrowings - Schedule Of Components of Interest Expense Natixis Facility (Details)
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995990 - Disclosure - Borrowings - BNP Facility Narrative (Details)
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996000 - Disclosure - Borrowings - BNP Facility Interest Expense and Average Outstanding Balance (Details)
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996010 - Disclosure - Borrowings - SBA Debentures Narrative (Details)
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996020 - Disclosure - Borrowings - Natixis Facility Interest Expense and Average Outstanding Balance (Details)
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996030 - Disclosure - Borrowings - Average Dollar Borrowings and Weighted Average Effective Interest Rate (Details)
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996040 - Disclosure - Borrowings - Maturity (Details)
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996050 - Disclosure - Federal Income Tax - Narrative (Details)
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996060 - Disclosure - Federal Income Tax - Tax Character of Distributions Paid (Details)
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996070 - Disclosure - Federal Income Tax - Distributable Earnings (Details)
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996080 - Disclosure - Federal Income Tax - Cost of Investments and Associated Gross Unrealized Appreciation (Depreciation) (Details)
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996090 - Disclosure - Federal Income Tax - Unrealized Appreciation (Depreciation) by Entity (Details)
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996100 - Disclosure - Federal Income Tax - Deferred Tax Assets and Liabilities (Details)
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996110 - Disclosure - Federal Income Tax - Income Taxes Paid (Details)
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996120 - Disclosure - Financial Highlights (Details)
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996130 - Disclosure - Capital Transactions - Narrative (Details)
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996140 - Disclosure - Capital Transactions - Distributions (Details)
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996150 - Disclosure - Capital Transactions - DRIP Participation (Details)
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996160 - Disclosure - Consolidated Schedule of Investments In and Advances To Affiliates (Details)
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996160 - Disclosure - Consolidated Schedule of Investments In and Advances To Affiliates (Details) [Default]
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996170 - Disclosure - Subsequent Events Narrative (Details)
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999009 - Disclosure - Anchoring
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7.50 Percent Notes Due 2028
7.50 Percent Notes Due 2028 [Member]
7.50% Notes due 2028
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]
Schedule of Income Taxes Paid
Interest payable
Increase (Decrease) in Interest Payable, Net
Clevertech Bidco, LLC
Clevertech Bidco, LLC [Member]
Clevertech Bidco, LLC
New Single Family Housing Construction Except For Sale Builders [Member]
New Single Family Housing Construction Except For Sale Builders [Member]
New Single-Family Housing Construction (except For-Sale Builders) [Member]
Contract Datascan Holdings, Inc.
Contract Datascan Holdings, Inc. [Member]
Contract Datascan Holdings, Inc.
Concentration Risk Type [Axis]
Concentration Risk Type [Axis]
Investment, Issuer Name [Axis]
Investment, Issuer Name [Axis]
Schedule of Related Party Transactions [Table Text Block]
Schedule of Related Party Expenses and Distributions
Entity Incorporation, State or Country Code
Pharmaceutical Preparation Manufacturing [Member]
Pharmaceutical Preparation Manufacturing [Member]
Pharmaceutical Preparation Manufacturing [Member]
Preferred Stock, Shares Issued
Preferred stock, issued (in shares)
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Supplemental Disclosure of Non-Cash Activities:
Schedule of Long-Term Debt Instruments [Table Text Block]
Schedule of Debt Instruments
Equity [Abstract]
Entity Current Reporting Status
Interest And Dividend Income, Operating, Paid In Kind, Including Capitalized Amounts
Interest And Dividend Income, Operating, Paid In Kind, Including Capitalized Amounts
Payment-in-kind interest and dividend income
Natixis Facility
Natixis Facility [Member]
Natixis Facility
Fair Value, Inputs, Level 2 [Member]
Level 2
Deferred Tax Assets, Net of Valuation Allowance
Total deferred tax assets
Commitments and Contingencies Disclosure [Text Block]
Commitments and Contingencies
Investment Company, Financial Highlights [Table Text Block]
Schedule of Financial Highlights
Common Stock, Shares Authorized
Common stock, authorized (in shares)
4.95% Notes due 2028
4.95 Percent Notes Due 2028
4.95 Percent Notes Due 2028 [Member]
Inergex Holdings, LLC
Inergex Holdings, LLC [Member]
Inergex Holdings, LLC
Investment, Affiliated Issuer, Noncontrolled [Member]
Affiliate investments
Document Fiscal Period Focus
Debt Instrument, Description
Computer and Computer Peripheral Equipment and Software Merchant Wholesalers [Member]
Computer and Computer Peripheral Equipment and Software Merchant Wholesalers [Member]
Computer and Computer Peripheral Equipment and Software Merchant Wholesalers [Member]
Debt Instrument, Interest Rate, Stated Percentage
Interest rate
Stated Interest Rate
Entity Shell Company
Wellful Inc.
Wellful Inc. [Member]
Wellful Inc. (F/K/A KNS Acquisition Corp.)
Cash and Cash Equivalent
Cash and cash equivalents
Total cash and cash equivalents
Schedule of Maturities of Long-Term Debt [Table Text Block]
Schedule of Scheduled Maturities
Other Industrial Machinery Manufacturing [Member]
Other Industrial Machinery Manufacturing [Member]
Other Industrial Machinery Manufacturing [Member]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Distributions
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Distributions
Proceeds from distributions received from portfolio investments
JP Intermediate B, LLC
JP Intermediate B, LLC [Member]
JP Intermediate B, LLC
Common Stock, Shares, Issued
Common stock, issued (in shares)
Asset Class [Domain]
Asset Class [Domain]
Professional, Scientific, And Technical Services
Professional, Scientific, And Technical Services [Member]
Professional, Scientific, and Technical Services
Statement [Table]
Statement [Table]
Investments, Owned, Federal Income Tax Note [Line Items]
Investments, Owned, Federal Income Tax Note [Line Items]
Investment Company, Investment Income (Loss) from Operations, Per Share
Total net loss from operations (in usd per share)
Investment Owned, Balance, Principal Amount
Principal Amount
Investment, Identifier [Axis]
Investment, Identifier [Axis]
Investment Company, Distribution to Shareholders to Tax Return of Capital Ratio
Investment Company, Distribution to Shareholders to Tax Return of Capital Ratio
Tax return of capital ratio
Investment Company, Distributable Earnings (Loss), Accumulated Capital Loss Carryforward
Investment Company, Distributable Earnings (Loss), Accumulated Capital Loss Carryforward [Abstract]
Capital loss carryforwards:
Electrical Contractors and Other Wiring Installation Contractors [Member]
Electrical Contractors and Other Wiring Installation Contractors [Member]
Electrical Contractors and Other Wiring Installation Contractors [Member]
Investment Company, Total Return, Market Value
Total return based on market value
Statement [Line Items]
Statement [Line Items]
Receivable, Investment, Sale
Receivable for investments sold
Warrant [Member]
Warrant Shares [Member]
Entity Filer Category
Reclassification, Comparability Adjustment [Policy Text Block]
Reclassifications
Liabilities and Equity
Total liabilities and net assets
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Investment Interest Rate
Interest Rate
Industry Sector [Axis]
Industry Sector [Axis]
Financial Support for Nonconsolidated Legal Entity [Table]
Financial Support for Nonconsolidated Legal Entity [Table]
Federal Income Tax Note [Table Text Block]
Schedule of Tax-Basis Cost of Investments and Associated Tax-Basis Gross Unrealized Appreciation (Depreciation)
Proceeds from Issuance of Debt
Net proceeds partial recovery of debt
Retail Trade
Retail Trade [Member]
Retail Trade
Health Care and Social Assistance
Health Care and Social Assistance [Member]
Health Care and Social Assistance
Investment Owned, Amortized Cost And Cash Equivalents, At Carrying Value
Investment Owned, Amortized Cost And Cash Equivalents, At Carrying Value
Total Investments and Cash Equivalents, Amortized Cost
Measurement Input, Default Rate [Member]
Constant default rate
Deferred Tax Assets, Valuation Allowance
Valuation allowance on deferred tax assets
Subsequent Event [Line Items]
Subsequent Event [Line Items]
Investment, Affiliated Issuer [Member]
Affiliate investments
Documents Incorporated by Reference
Investment Advisory Agreement - Incentive Fee Rate, Realized Capital Gains
Investment Advisory Agreement - Incentive Fee Rate, Realized Capital Gains [Member]
Incentive fee, realized capital gains
Fair Value Recurring Basis Unobservable Input Reconciliation Asset Gain Loss Statement Of Income Extensible List Not Disclosed Flag
Fair Value Recurring Basis Unobservable Input Reconciliation Asset Gain Loss Statement Of Income Extensible List Not Disclosed Flag
Location of amounts included in earnings - not disclosed
Amortization of Deferred Loan Origination Fees, Net
Amortization of Net Loan Fees
Geographical [Domain]
Geographical [Domain]
Proceeds From Investment Distributions, Operating Activity
Proceeds From Investment Distributions, Operating Activity
Proceeds from distributions received from portfolio investments
Finance and Insurance
Finance and Insurance [Member]
Finance and Insurance
Debt Issuance Costs, Net
Unamortized Debt Issuance Costs
Unamortized Debt Issuance Costs
Effective interest rate
Debt Instrument, Interest Rate During Period
Weighted-Average Effective Interest Rate
Investment Maturity Date
Maturity
Second Lien Debt Investment [Member]
Second Lien Debt Investment [Member]
Investment Company, Realized Gain (Loss) on Investment, Per Share
Net realized loss on investments, net of taxes (in usd per share)
Net realized loss on investments, net of taxes (in usd per share)
Stock Issued During Period, Value, Dividend Reinvestment Plan
DRIP Shares Value
Investment, Variable Interest Rate, Type [Extensible Enumeration]
Schedule of Cash and Cash Equivalents [Table Text Block]
Schedule of Cash and Cash Equivalents
Investment Yield Percentage
Investment Yield Percentage
Investment Yield Percentage
Investment Owned, At Fair Value, Nonaccrual
Investment Owned, At Fair Value, Nonaccrual
Fair value of loans on non-accrual status
Distribution Made to Limited Partner, Date of Record
Nonrelated Party [Member]
Nonrelated party
Cash Equivalents, Fair Value Disclosure
Cash Equivalents, Fair Value Disclosure
Cash Equivalents, Fair Value
Increase (Decrease) in Other Operating Assets and Liabilities, Net
Other assets and liabilities
Equity Securities [Member]
Equity investments
Investment Company, Distribution, Ordinary Income
Ordinary taxable income
Distributions from net investment income
Investment, Unaffiliated Issuer [Member]
Non-control/non-affiliate investments
Investment, Name [Axis]
Investment, Name [Axis]
Earnings Per Share, Basic
Net increase (decrease) in net assets resulting from operations per common share - basic (in usd per share)
Repayments of Long-Term Debt
Redemption of debt
Brightwood Capital MM CLO 2023-1, Ltd.
Brightwood Capital MM CLO 2023-1, Ltd. [Member]
Brightwood Capital MM CLO 2023-1, Ltd.
Investment Company, Expense Ratio after Incentive Allocation
Ratio of total expenses net to average net assets
Investment Advisory Agreement - Incentive Fee Rate, Pre-Incentive Fee Net Investment Income Exceeds Catch-Up Threshold
Investment Advisory Agreement - Incentive Fee Rate, Pre-Incentive Fee Net Investment Income Exceeds Catch-Up Threshold [Member]
Incentive fee, pre-incentive fee net investment income exceeds catch-up threshold
Morgan Stanley Institutional Liquidity Funds - Government Portfolio Advisory Class [Member]
Morgan Stanley Institutional Liquidity Funds - Government Portfolio Advisory Class [Member]
Morgan Stanley Institutional Liquidity Funds - Government Portfolio Advisory Class
Investment Company, Total Return
Total return based on net asset value
Revolving Credit Facility [Member]
Revolving Credit Facility
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Adjustments to reconcile net decrease in net assets resulting fromoperations to net cash provided by operating activities:
Investment Company, Investment Income (Loss) Ratio, after Incentive Allocation
Ratio of net investment income to average net assets
Incentive Fee Expense
Income Incentive Fee
Income Incentive Fee
Income Tax Paid, Federal, after Refund Received
U.S. federal income taxes
Realized Gain (Loss), Investment and Derivative, Operating, after Tax
Net realized losses on investments, net of taxes
Investment, Tax Basis, Unrealized Gain
Tax-basis gross unrealized appreciation on investments
Increase (Decrease) in Interest and Dividends Receivable
Interest and dividend receivable
Capital Loss Carryforward
Capital Loss Carryforward [Axis]
Capital Loss Carryforward [Axis]
Interest Expense, Debt, Excluding Amortization
Stated interest expense
Payments of Debt Issuance Costs
Payment of deferred financing costs
Equity, Attributable to Parent [Abstract]
Net Assets
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Schedule of the Company's Unobservable Inputs to its Level 3 Fair Value Measurements
Entity Small Business
Computer Systems Design Services [Member]
Computer Systems Design Services [Member]
Valuation, Market Approach [Member]
Market approach
Retained Earnings (Accumulated Deficit)
Total distributable earnings (accumulated losses)
Repayments of Unsecured Debt
Redemption of debt
Redemption of Unsecured Notes
Investment Owned, Fair Value And Cash Equivalents At Fair Value
Investment Owned, Fair Value And Cash Equivalents At Fair Value
Total Investments and Cash Equivalents, Fair Value
Other Commitments [Line Items]
Other Commitments [Line Items]
Industry Sector [Domain]
Industry Sector [Domain]
Preferred Stock [Member]
Preferred Stock [Member]
Entity Well-known Seasoned Issuer
Investment Advisory Agreement, Incentive Fee Rate, Annualized Hurdle Rate
Investment Advisory Agreement, Incentive Fee Rate, Annualized Hurdle Rate [Member]
Incentive fee, annualized hurdle rate
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Investment Owned, Net Assets, Percentage And Cash Equivalents, Net Assets, Percentage
Investment Owned, Net Assets, Percentage And Cash Equivalents, Net Assets, Percentage
Total Investments and Cash Equivalents, Percent of Net Assets
Common Class A [Member]
Common Class A [Member]
Unsecured Notes Due July 2028, Overallotments
Unsecured Notes Due July 2028, Overallotments [Member]
Unsecured Notes Due July 2028, Overallotments
Investment Company, Distributable Earnings (Loss), Accumulated Ordinary Income (Loss)
Ordinary income (RIC)
Amendment Flag
Debt and Equity Securities, Realized Gain (Loss)
Net Realized Gain (Loss)
Net realized (loss) gain
Net realized loss on investments, net of taxes
Interest Income, Operating, Amortization Of Net Loan Fees
Interest Income, Operating, Amortization Of Net Loan Fees [Member]
Amortization of Net Loan Fees
Investment Concentration Risk
Investment Concentration Risk [Member]
Investment concentration risk
Common Equity, Warrants and Other
Common Equity, Warrants and Other [Member]
Common equity, warrants and other
Common Equity and Warrants
Kreg LLC
Kreg LLC [Member]
Kreg LLC
Other Services (Except Public Administration)
Other Services (Except Public Administration) [Member]
Other Services (except Public Administration)
Entity Address, Postal Zip Code
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Net cash provided by operating activities
Common Stock [Member]
Common Stock
Common Stock, $0.01 par value per share
Long-Term Debt, Maturity, Year One
Less than 1 year
Adviser Concentration Risk
Adviser Concentration Risk [Member]
Adviser Concentration Risk
Dividend Income, Operating
Dividends
Debt Instrument, Interest Rate, Effective Percentage
Effective Interest Rate
Effective Interest Rate
Portion at Fair Value Measurement [Member]
Portion at Fair Value Measurement
Portion at Fair Value Measurement [Member] [Default]
Entity Address, Address Line One
Deferred Tax Liabilities, Gross
Total deferred tax liabilities
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3
Transfers from Level 3 to Level 2
Transfers from Level 3 to Level 2
Other Ambulatory Health Care Services [Member]
Other Ambulatory Health Care Services [Member]
Other Ambulatory Health Care Services [Member]
Dividends Payable [Table]
Dividends Payable [Table]
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV [Axis]
Supplemental Cash Flow Information [Abstract]
Supplemental Disclosure of Cash Flow Information:
Arrangement fee Percentage
Arrangement fee Percentage
Arranger fees
Management Fee Expense
Base management fees
Investment Type [Axis]
Investment Type [Axis]
Structured Finance Securities
Structured Finance Securities [Member]
Structured Finance Securities
Investment Advisory Agreement - Incentive Fee Rate, Quarterly Catch-Up Threshold
Investment Advisory Agreement - Incentive Fee Rate, Quarterly Catch-Up Threshold [Member]
Incentive fee, quarterly catch-up threshold
Deferred Tax Assets, Gross
Total deferred tax assets
Avison Young Inc.
Avison Young Inc. [Member]
Avison Young Inc.
Other Computer Related Services [Member]
Other Computer Related Services [Member]
Other Computer Related Services [Member]
Document Type
Income Taxes Paid, Net
Cash paid for taxes
Total cash paid for income taxes
5.95 Percent Notes Due 2026
5.95 Percent Notes Due 2026 [Member]
Increase (Decrease) in Payable for Investment Purchased
Payable for investments purchased
Stock Issued During Period, Shares, Period Increase (Decrease)
Net increase (decrease) (in shares)
Entity Central Index Key
Investment Owned, Percentage
Investment Owned, Percentage
Investment percentage
OFSCC-FS
OFSCC-FS [Member]
OFSCC-FS
Line of Credit Facility [Table]
Line of Credit Facility [Table]
Investment Company, Net Assets [Roll Forward]
Investment Company, Net Assets [Roll Forward]
Proceeds From Disposition Of Investment, Principal Payment, Operating Activity
Proceeds From Disposition Of Investment, Principal Payment, Operating Activity
Proceeds from principal payments on portfolio investments
Valuation Approach and Technique [Axis]
Valuation Approach and Technique [Axis]
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation
Net decrease in cash and cash equivalents
Professional and Management Development Training [Member]
Professional and Management Development Training [Member]
Professional and Management Development Training [Member]
Subsequent Event Type [Domain]
Subsequent Event Type [Domain]
Investment Company, Unrealized Gain (Loss) on Investment, Per Share
Net unrealized depreciation on investments, net of deferred taxes (in usd per share)
Net unrealized depreciation on investments, net of deferred taxes (in usd per share)
Unsecured Notes Due July 2028
Unsecured Notes Due July 2028 [Member]
Unsecured Notes Due July 2028
Common Stock, Par or Stated Value Per Share
Common stock, par value (in usd per share)
Liabilities [Abstract]
Liabilities
Administrative Fees Expense
Administration fees
Administration fees
Debt Securities, Available-for-Sale
Senior secured debt investments
Measurement Input, EBITDA Multiple [Member]
EBITDA multiples
Investment Company, Expense, after Reduction of Fee Waiver and Reimbursement
Total expenses, net of base management fee waiver
6.25 Percent Notes Due 2023
6.25 Percent Notes Due 2023 [Member]
Realized Investment Gains (Losses)
Realized Investment Gains (Losses), Total
Interest Income, Operating, Paid in Cash
Interest income:
Interest
Document Financial Statement Error Correction [Flag]
Long-Term Debt, Maturity, Year Two and Three
Long-Term Debt, Maturity, Year Two and Three, Total
1 to 3 years
Debt Disclosure [Abstract]
12 Interactive, LLC
12 Interactive, LLC [Member]
12 Interactive, LLC (D/B/A PerkSpot)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases
Purchase and origination of portfolio investments
Investments in and Advances to Affiliates, at Fair Value, Gross Additions
Gross Additions
Estimate of Fair Value Measurement [Member]
Fair Value
Investment, Interest Rate, Effective Accretable Yield
Investment, Interest Rate, Effective Accretable Yield
Effective accretable yield
Current Fiscal Year End Date
Schedule of Long-Term Debt Instruments [Table]
Schedule of Long-Term Debt Instruments [Table]
Related Party Transaction, Number Of Components
Related Party Transaction, Number Of Components
Number of components of incentive fee
Amortized cost of loans on non-accrual additions
Investment Owned At Cost Nonaccrual Additions
Investment owned at cost nonaccrual additions.
Other Cost and Expense, Operating
Other expenses
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, by Balance Sheet Grouping [Table]
Entity Address, State or Province
Investment Company, Distributable Earnings (Loss), Accumulated Operating Loss Carryforward
Investment Company, Distributable Earnings (Loss), Accumulated Operating Loss Carryforward
Net operating loss carryforward (OFSCC-MB; C-Corporation)
Line of Credit Facility, Remaining Borrowing Capacity
Availability
Investment Company, Qualifying Assets Percentage
Investment Company, Qualifying Assets Percentage
Qualifying assets percentage
Schedule For Financial Support For Nonconsolidated Entity
Schedule For Financial Support For Nonconsolidated Entity [Table Text Block]
Schedule of Commitments to Fund Investments
Investment, Name [Domain]
Investment, Name [Domain]
Investment Owned, Balance, Shares
Share of common stock owned (in shares)
Shares
Preferred Stock, Shares Outstanding
Preferred stock, outstanding (in shares)
Portfolio Customers Over Ten Percent
Portfolio Customers Over Ten Percent [Member]
Portfolio Customers Over Ten Percent
Investment Company, Ratio And Supplemental Data
Investment Company, Ratio And Supplemental Data [Abstract]
Ratio/Supplemental Data (in thousands except ratios)
Geographical [Axis]
Geographical [Axis]
Gain (Loss), Investment and Derivative, Operating, and Foreign Currency Transaction, after Tax
Net gain (loss) on investments
Professional Fees
Professional fees
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Schedule of Deferred Tax Assets and Liabilities
Subsequent Event [Member]
Subsequent Event
GoTo Group (F/K/A LogMeIn, Inc.)
GoTo Group (F/K/A LogMeIn, Inc.) [Member]
GoTo Group (F/K/A LogMeIn, Inc.)
Unsecured Notes Due October 2028
Unsecured Notes Due October 2028 [Member]
Unsecured Notes due October 2028
Unsecured Notes Due October 2028
Fair Value Measurement Inputs and Valuation Techniques [Table]
Fair Value Measurement Inputs and Valuation Techniques [Table]
Unsecured Debt
Unsecured Notes (net of deferred debt issuance costs of $2,554 and $2,812, respectively)
Investment, Interest Rate, Paid in Kind
Interest Rate, PIK
Basis of Presentation and Significant Accounting Policies [Text Block]
Summary of Significant Accounting Policies
Fair value of loans on non-accrual additions
Investment Owned, At Fair Value, Nonaccrual, Additions
Investment owned, at fair value, nonaccrual, additions.
Interest Expense, Debt
Total interest and debt financing costs
Related Party Transaction [Axis]
Related Party Transaction [Axis]
Investment Advisory Agreement - Incentive Fee Rate, Pre-Incentive Fee Net Investment Income Below Catch-Up Threshold
Investment Advisory Agreement - Incentive Fee Rate, Pre-Incentive Fee Net Investment Income Below Catch-Up Threshold [Member]
Incentive fee, pre-incentive fee net investment income below catch-up threshold
Investment Company, Investment Income (Loss), Per Share, Diluted
Net investment income per common share - diluted (in usd per share)
Customer [Domain]
Customer [Domain]
SBA Debentures
SBA Debentures [Member]
SBA Debentures
Investment, Issuer Name [Domain]
Investment, Issuer Name [Domain]
O 2025 Q1 Aggregate Dividends
O 2025 Q1 Aggregate Dividends [Member]
O 2025 Q1 Aggregate Dividends [Member]
Amendment Fees Collected
Amendment Fees Collected
Amendment fees received
Short-Term Capital Loss Carryforward
Short-Term Capital Loss Carryforward [Member]
Short-Term Capital Loss Carryforward
Cash and Cash Equivalents [Domain]
Unsecured Debt [Member]
Unsecured Notes
Investments in and Advances to Affiliates [Abstract]
Preferred Stock, Value, Issued
Preferred stock, par value of $0.01 per share, 2,000,000 shares authorized, -0 shares issued and outstanding as of March 31,2026 and December 31, 2025, respectively
Payment for Debt Extinguishment or Debt Prepayment Cost
Make whole-premium
Investments in and Advances to Affiliates, Schedule of Investments [Text Block]
Consolidated Schedule of Investments In and Advances To Affiliates
Minimum [Member]
Minimum
Financial Instrument [Axis]
Financial Instrument [Axis]
AIDC IntermediateCo 2, LLC
AIDC IntermediateCo 2, LLC [Member]
AIDC IntermediateCo 2, LLC
Investments in and Advances to Affiliates, at Fair Value, Gross Reductions
Gross Reductions
Common Class B [Member]
Common Class B [Member]
Fair Value, Inputs, Level 3 [Member]
Level 3
Proceeds from Long-Term Lines of Credit
Borrowings under revolving lines of credit
Debt And Equity Investments
Debt And Equity Investments [Member]
Total debt and equity investments
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
Schedule of Investment Portfolio Measured at Fair Value on a Recurring Basis
Related Party Transactions [Abstract]
Management and Service Fees, Incentive Rate
Incentive fee percentage
Investment Company, Tax Return of Capital Distribution
Return of capital
Distributions from tax return of capital
Debt Instrument, Floor Interest Rate
Debt Instrument, Floor Interest Rate
Interest rate floor
Outpatient Mental Health and Substance Abuse Centers [Member]
Outpatient Mental Health and Substance Abuse Centers [Member]
Second Lien Debt Investments
Second Lien Debt Investments [Member]
Second lien debt investments
Commitments and Contingencies
Commitments and contingencies (Note 6)
Line of Credit Facility, Maximum Borrowing Availability Limit
Line of Credit Facility, Maximum Borrowing Availability Limit
Maximum availability limit percentage
Investment Company, Market Value, Per Share
Per share market value, end of period (in usd per share)
Measurement Input, Recovery Rate
Measurement Input, Recovery Rate [Member]
Recovery rate
Auditor Firm ID
Debt Instrument, Basis Spread on Variable Rate
Basis spread on variable interest rate
Software Publishers [Member]
Software Publishers [Member]
Software Publishers [Member]
Dividends Payable [Line Items]
Dividends Payable [Line Items]
Proceeds from Issuance of Unsecured Debt
Proceeds from Unsecured Notes issuances, net of commissions and discounts
Net proceeds
Line of Credit Facility, Borrowing Capacity, Description
Line of Credit Description
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Axis]
Medrina LLC
Medrina LLC [Member]
Medrina LLC
Sentry Centers Holdings, LLC [Member]
Sentry Centers Holdings, LLC [Member]
Sentry Centers Holdings, LLC
JERSEY
Jersey
Affiliates Of OFS Advisor
Affiliates Of OFS Advisor [Member]
Affiliates Of OFS Advisor
Measurement Input, Net Asset Value Liquidation
Measurement Input, Net Asset Value Liquidation [Member]
Net asset value liquidation
Unrealized Gain (Loss), Investment and Derivative, Operating, Tax Expense (Benefit)
Deferred tax expense on net unrealized appreciation
Investment Owned, At Cost, Nonaccrual
Investment Owned, At Cost, Nonaccrual
Amortized cost of loans on non-accrual status
Honor HN Buyer Inc
Honor HN Buyer Inc [Member]
Honor HN Buyer Inc.
Unsecured Notes Due August 2029
Unsecured Notes Due August 2029 [Member]
Unsecured Note Due August 2029
GGC Aerospace Topco L.P.
GGC Aerospace Topco L.P. [Member]
GGC Aerospace Topco L.P.
Notes Payable, Other Payables [Member]
Debentures
Long-Term Debt, Type [Domain]
Long-Term Debt, Type [Domain]
Weighted Average Number of Shares Outstanding, Basic
Basic weighted-average shares outstanding (in shares)
Basic weighted-average common shares outstanding (in shares)
Document Information [Line Items]
First Lien Debt Investments
First Lien Debt Investments [Member]
First lien debt investments
Investment Company, Gain (Loss) On Extinguishment Of Debt, Per Share
Investment Company, Gain (Loss) On Extinguishment Of Debt, Per Share
Loss on extinguishment of debt (in usd per share)
Distribution declared
Distribution declared
Interest Payable
Interest payable
Subsequent Events [Text Block]
Subsequent Events
Related Party Transactions Disclosure [Text Block]
Related Party Transactions
Cash
Cash and cash equivalents
Cash
Equity, Attributable to Parent
Balance
Balance
Net asset value at end of year
Total net assets
Preferred Stock, Par or Stated Value Per Share
Preferred stock, par value (in usd per share)
Schedule of Investments in and Advances to Affiliates, Schedule of Investments [Table Text Block]
Consolidated schedule of investments in and advances to affiliates
Basis of Accounting, Policy [Policy Text Block]
Basis of presentation
Offices of Physicians and Mental Health Specialists [Member]
Offices of Physicians and Mental Health Specialists [Member]
Offices of Physicians and Mental Health Specialists [Member]
Investment Company, Investment Owned, Measurement Input
Investments, at fair value, measurement input
Statement of Stockholders' Equity [Abstract]
Series C Preferred Stock [Member]
Preferred Equity Series C [Member]
Valuation Approach and Technique [Domain]
Valuation Approach and Technique [Domain]
Series A Preferred Stock [Member]
Preferred Equity Series A [Member]
Increase (Decrease) in Operating Assets [Abstract]
Changes in operating assets and liabilities:
Use of Estimates, Policy [Policy Text Block]
Use of estimates
Investment Portfolio Fair Value
Investment Portfolio Fair Value [Member]
Portfolio Fair Value
Investments in and Advances to Affiliates [Line Items]
Investments in and Advances to Affiliates [Line Items]
Entity Address, Address Line Two
Fair Value Disclosures [Text Block]
Fair Value of Financial Instruments
Total expenses before base management fee waiver
Investment Company, Expense, Before Base Managment Fee Waiver
Investment Company, Expense, Before Base Managment Fee Waiver
RIC Entities
RIC Entities [Member]
RIC Entities
Investment Owned, Fair Value
Fair Value
Fair Value
Fair Value
Fair value of investments
Investments, at fair value
UNITED STATES
United States of America
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
Measurement Input, Discount Rate [Member]
Discount rates
Prepaid Expense and Other Assets
Prepaid expenses and other assets
Debt And Equity Securities, Realized Gain (Loss)
Debt And Equity Securities, Realized Gain (Loss) [Member]
Net realized gain (loss) on investments
Data Processing, Hosting, and Related Services [Member]
Data Processing, Hosting, and Related Services [Member]
Data Processing, Hosting, and Related Services [Member]
Construction Sector [Member]
Construction
Interest Expense, Operating and Nonoperating
Interest expense
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]
Entity [Domain]
Offices of Other Holding Companies [Member]
Offices of Other Holding Companies [Member]
Offices of Other Holding Companies [Member]
Credit Facility [Axis]
Credit Facility [Axis]
Equity Method Investment, Ownership Percentage
Investment ownership percentage
Schedule of Investments [Line Items]
Schedule of Investments [Line Items]
Medical Laboratories [Member]
Medical Laboratories [Member]
Medical Laboratories [Member]
Debt Securities [Member]
Debt investments
Cash Available for Distributions
Cash available for distribution
Management Of Companies And Enterprises
Management Of Companies And Enterprises [Member]
Management of Companies and Enterprises
Schedule of Line of Credit Facilities [Table Text Block]
Schedule of Credit Facilities
Lessors of Nonfinancial Intangible Assets Except Copyrighted Works [Member]
Lessors of Nonfinancial Intangible Assets Except Copyrighted Works [Member]
Lessors of Nonfinancial Intangible Assets (except Copyrighted Works) [Member]
Services For The Elderly And Persons With Disabilities [Member]
Services For The Elderly And Persons With Disabilities [Member]
Related and Nonrelated Parties [Axis]
Related Party [Axis]
Line of Credit Facility, Average Outstanding Amount
Average outstanding balance
Nonresidential Property Managers [Member]
Nonresidential Property Managers [Member]
Nonresidential Property Managers [Member]
Gain (Loss) on Extinguishment of Debt, before Debt Issuance Cost Writeoff
Loss on extinguishment of debt
Entity Address, City or Town
Investment, Issuer Affiliation [Domain]
Investment, Issuer Affiliation [Domain]
Stock Repurchased During Period, Shares
Number of reportable segments
Number of Reportable Segments
Investment Advisory Agreement
Investment Advisory Agreement [Member]
Investment Advisory Agreement
Security Exchange Name
Debt Issuance Costs Incurred During Noncash or Partial Noncash Transaction
Reclassification of deferred offering costs from the issuance of Unsecured Notes
Credit Facility [Domain]
Credit Facility [Domain]
Investments in and Advances to Affiliates [Table]
Investments in and Advances to Affiliates [Table]
Long-Term Debt, Gross
Debt outstanding
Total
I Love Produce, LLC [Member]
I Love Produce, LLC [Member]
I Love Produce, LLC [Member]
Debt, Weighted Average Interest Rate
Weighted-average fixed cash interest rate
Long-Term Capital Loss Carryforward
Long-Term Capital Loss Carryforward [Member]
Long-Term Capital Loss Carryforward
Counterparty Name [Axis]
Counterparty Name [Axis]
Concentration Risk Type [Domain]
Concentration Risk Type [Domain]
Investment Company,, Issuance Of Common Stock, Net Of Repurchases
Investment Company,, Issuance Of Common Stock, Net Of Repurchases
Issuance/repurchase of common stock (in usd per share)
Measurement Input Type [Domain]
Measurement Input Type [Domain]
Investment, Acquisition Date
Initial Acquisition Date
Investment Owned, Cost
Amortized Cost
Investments, amortized cost
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation
Cash and cash equivalents — end of year
Cash and cash equivalents — beginning of year
Interest Paid, Excluding Capitalized Interest, Operating Activity
Cash paid for interest expense
Cash paid for interest
Measurement Basis [Axis]
Measurement Basis [Axis]
Statistical Measurement [Domain]
Statistical Measurement [Domain]
Convention and Trade Show Organizers [Member]
Convention and Trade Show Organizers [Member]
Convention and Trade Show Organizers [Member]
PSB Group, LLC
PSB Group, LLC [Member]
PSB Group, LLC
Document Period End Date
Variable-rate Loans
Variable-rate Loans [Member]
Variable-rate Loans
Management and Service Fees, Base Rate
Base management fee percentage
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV [Domain]
ICFR Auditor Attestation Flag
Investment Portfolio Net Assets
Investment Portfolio Net Assets [Member]
Portfolio Net Assets
Capital Loss Carryforward [Domain]
Capital Loss Carryforward [Domain]
Capital Loss Carryforward [Domain]
Line of Credit Facility, Commitment Fee Percentage
Line of credit facility, commitment fee
Investment, Issuer Affiliation [Axis]
Investment, Issuer Affiliation [Axis]
Integrated Energy Services, LLC
Integrated Energy Services, LLC [Member]
Integrated Energy Services, LLC
Fee Income
Fee income:
Fees
Statement of Financial Position [Abstract]
Line of Credit [Member]
Line of Credit
Investment Company, Distribution To Shareholders
Investment Company, Distribution To Shareholders [Table Text Block]
Schedule of Tax Character of Distributions Paid
Investment Advisory Agreement - Base Management Fee Rate, Annualized
Investment Advisory Agreement - Base Management Fee Rate, Annualized [Member]
Base management fee, annualized
Unsecured Notes Due February 2026
Unsecured Notes Due February 2026 [Member]
Unsecured Notes Due February 2026
Unsecured Notes
Class of Stock [Axis]
Unused Borrowing Capacity Amount
Debt Instrument, Unused Borrowing Capacity, Amount
Base management fee waiver
Investment Company, Management Fee, Voluntary Fee Waived
Base management fee waiver (see Note 3)
Share Repurchase Program, Period in Force
Stock repurchase program, period
Stock Issued During Period, Average Value Per Share, Dividend Reinvestment Plan
Stock Issued During Period, Average Value Per Share, Dividend Reinvestment Plan
Average Value Per Share (in usd per share)
Liabilities
Total liabilities
Financial Instruments [Domain]
Financial Instruments [Domain]
Dividends
Distributions
Envocore Holding, LLC (F/K/A LRI Holding, LLC)
Envocore Holding, LLC (F/K/A LRI Holding, LLC) [Member]
Envocore Holding, LLC (F/K/A LRI Holding, LLC)
Dividend Income, Operating, Paid in Cash
Dividend income:
6.50 Percent Notes Due 2025
6.50 Percent Notes Due 2025 [Member]
Drugs and Druggists' Sundries Merchant Wholesalers [Member]
Drugs and Druggists' Sundries Merchant Wholesalers [Member]
Drugs and Druggists' Sundries Merchant Wholesalers [Member]
Weighted Average Number of Shares Outstanding, Diluted
Diluted weighted-average shares outstanding (in shares)
Diluted weighted-average common shares outstanding (in shares)
Securities Act File Number
SS Acquisition, LLC
SS Acquisition, LLC [Member]
SS Acquisition, LLC
Unrealized Gain (Loss), Investment and Derivative, Operating, after Tax
Net unrealized (appreciation) depreciation on investments, net of deferred taxes
Net unrealized depreciation on investments, net of deferred taxes
Payments of Ordinary Dividends, Common Stock
Distributions paid to common stockholders
Master Cutlery, LLC
Master Cutlery, LLC [Member]
Master Cutlery, LLC
Investment, Tax Basis, Unrealized Loss
Tax-basis gross unrealized depreciation on investments
Measurement Input Type [Axis]
Measurement Input Type [Axis]
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]
Schedule of Carrying Values and Fair Values of Debt
Subordinated Debt [Member]
Subordinated debt investments
Investments [Domain]
Investments [Domain]
Debt Issuance Costs, Line of Credit Arrangements, Net
Deferred debt issuance costs
Investment Company, Gain (Loss) On Extinguishment Of Debt Ratio
Investment Company, Gain (Loss) On Extinguishment Of Debt Ratio
Ratio of loss on extinguishment of debt to average net assets
Investment Company, Per Share Operating Performance
Investment Company, Per Share Operating Performance [Roll Forward]
Per share operating performance:
Number of Operating Segments
Number of operating segments
Preferred Equity Series B [Member]
Series B Preferred Stock [Member]
Investment, Tax Basis, Cost
Tax-basis amortized cost of investments
Dividends Declared [Table Text Block]
Schedule of Distributions Declared
Subsequent Event [Table]
Subsequent Event [Table]
Audit Information
Audit Information [Abstract]
Dividend Reinvestment Plan, Participation Amount
Dividend Reinvestment Plan, Participation Amount
DRIP Shares Value(1)
Line of Credit Facility, Interest Rate During Period
Effective interest rate
Investment Owned, Number Of Portfolio Companies
Investment Owned, Number Of Portfolio Companies
Number of portfolio companies
Gain (Loss) on Extinguishment of Debt
Loss on extinguishment of debt
Loss on extinguishment of debt
Gain (Loss) on Extinguishment of Debt, Total
Schedule of Investments [Table]
Schedule of Investments [Table]
Payment for Purchase, Investment, Operating Activity
Purchase and origination of portfolio investments
Investment Company, Dividend Distribution
Cash Distribution
Schedule of Investments [Text Block]
Investments
Structured Finance Securities, Mezzanine Debt
Structured Finance Securities, Mezzanine Debt [Member]
Mezzanine debt
PM Acquisition LLC [Member]
PM Acquisition LLC [Member]
PM Acquisition LLC
Investment Company, Portfolio Turnover
Portfolio turnover
Increase (Decrease) in Receivable for Investment Sold
Receivable for investments sold
Reported Value Measurement [Member]
Carrying Value
Investment Holdings, Schedule of Investments [Table Text Block]
Schedule of Investments
Common Stock, Shares, Outstanding
Balance (in shares)
Balance (in shares)
Shares outstanding at end of period (in shares)
Common stock, outstanding (in shares)
Number of common shares outstanding
Distribution Made to Limited Partner, Declaration Date
Long-Term Debt, Average Amount Outstanding
Average outstanding balance
Average Dollar Borrowings
Dividends [Domain]
Dividends [Domain]
Document Transition Report
Investment Company, Distribution to Shareholders, Net Investment Income, Per Share
Investment Company, Distribution to Shareholders, Net Investment Income, Per Share
Distributions declared (in usd per share)
Valuation Technique, Discounted Cash Flow [Member]
Discounted cash flow
Schedule of Investments [Abstract]
Statement of Cash Flows [Abstract]
Measurement Input, Discount Margin
Measurement Input, Discount Margin [Member]
Discount margin
Equity [Text Block]
Capital Transactions
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers
Conversion from debt investments to equity investments
Redstone Holdco 2 LP (F/K/A RSA Security)
Redstone Holdco 2 LP (F/K/A RSA Security) [Member]
Redstone Holdco 2 LP (F/K/A RSA Security)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value
Level 3 assets, ending balance
Level 3 assets, beginning balance
Investment Income, Operating, after Expense and Tax
Net investment income
Net increase (decrease) in net assets resulting from operations
Interest Income, Operating, Capitalized Paid In Kind Interest And Dividends
Interest Income, Operating, Capitalized Paid In Kind Interest And Dividends [Member]
Capitalized PIK interest and dividends
Income Tax Contingency [Line Items]
Income Tax Contingency [Line Items]
Investment Owned, Percent Of Amortized Cost
Investment Owned, Percent Of Amortized Cost
Percentage of Total, Amortized Cost
Payments of Distributions to Affiliates
Distributions paid to affiliates
BNP Facility
BNP Facility [Member]
BNP Facility
Investment, Basis Spread, Variable Rate
Spread Above Index
Investment Company, Components Of Distributable Earnings (Accumulated Losses)
Investment Company, Components Of Distributable Earnings (Accumulated Losses) [Table Text Block]
Schedule of Tax-Basis Components of Distributable Earnings
Line of Credit Facility [Line Items]
Line of Credit Facility [Line Items]
Assets [Abstract]
Assets
Investment Company, Distribution, Long-Term Capital Gain
Long-term capital gain
Document Fiscal Year Focus
Concentration Risk Benchmark [Domain]
Concentration Risk Benchmark [Domain]
Investment Company, Dividend Distribution And Tax Return Of Capital Distribution
Investment Company, Dividend Distribution And Tax Return Of Capital Distribution
Total distributions to common stockholders
Investment Owned, Percent Of Fair Value
Investment Owned, Percent Of Fair Value
Percentage of Total, Fair Value
SSJA Bariatric Management LLC
SSJA Bariatric Management LLC [Member]
SSJA Bariatric Management LLC
Stock Repurchased During Period, Shares, Dividend Reinvestment Plan
Stock Repurchased During Period, Shares, Dividend Reinvestment Plan
Number of Shares Purchased (in shares)
Information
Information [Member]
Information
Single Adviser
Single Adviser [Member]
Single Adviser
Net Investment Income
Net investment income
Net investment income
Other Liabilities
Payable to investment adviser and affiliates and Other liabilities
Fair Value Disclosures [Abstract]
Commitments and Contingencies Disclosure [Abstract]
CANADA
Canada
Investment Company, Distribution to Shareholders, Per Share
Amount Per Share (in usd per share)
Distributions declared per common share (in usd per share)
Repayments of Long-Term Lines of Credit
Repayments under revolving lines of credit
Wholesale Trade
Wholesale Trade [Member]
Wholesale Trade
Investment Company, Average Net Assets
Average net asset value
Investment Owned, Net Assets, Percentage
Principal Amount
Percent of Net Assets
Increase (Decrease) in Due to Affiliates
Payable to adviser and affiliates
Long-Term Line of Credit
Outstanding debt
Revolving lines of credit
Tolemar Acquisition, INC.
Tolemar Acquisition, INC. [Member]
Tolemar Acquisition, Inc.
Investment Company, Distribution to Shareholders to Ordinary Income Ratio
Investment Company, Distribution to Shareholders to Ordinary Income Ratio
Ordinary income ratio
Debt Instrument [Axis]
Debt Instrument, Covenant, Asset Coverage Percentage
Debt Instrument, Covenant, Asset Coverage Percentage
Debt covenant, asset coverage
Concentration Risk, Percentage
Concentration risk, percentage
Percentage of Total
Debt Instrument, Fair Value Disclosure
Total debt
Debt And Equity Securities, Unrealized Gain (Loss)
Debt And Equity Securities, Unrealized Gain (Loss) [Member]
Net change in unrealized appreciation (depreciation) on investments
Excise Tax Receivable
Excise Tax Receivable
Excise tax refund receivable
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3
Transfers from Level 2 to Level 3
Payable, Investment, Purchase
Payable for investments purchased
Associated Spring, LLC
Associated Spring, LLC [Member]
Associated Spring, LLC
Fee Income
Fee Income [Member]
Amendment fees received
Title of 12(b) Security
Line of Credit Facility, Interest Rate at Period End
Effective interest rate
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]
Share Repurchase Program, Remaining Authorized, Amount
Remaining dollar value of shares that may be repurchased
All Other Outpatient Care Centers [Member]
All Other Outpatient Care Centers [Member]
All Other Outpatient Care Centers [Member]
Related and Nonrelated Parties [Domain]
Related Party [Domain]
After 5 years
Long-Term Debt, Maturity, after Year Five
Measurement Input, Quoted Price [Member]
Transaction price
Income Tax Disclosure [Text Block]
Federal Income Tax
OFSCC-MB
OFSCC-MB [Member]
OFSCC-MB
Document Information [Table]
Legal Entity [Axis]
Cash Equivalents Percent Of Net Assets
Cash Equivalents Percent Of Net Assets
Cash Equivalents Percent Of Net Assets
Income Tax Disclosure [Abstract]
Fair Value, Recurring and Nonrecurring [Table]
Fair Value, Recurring and Nonrecurring [Table]
Additional Paid-in Capital [Member]
Paid-in capital in excess of par
Spring Manufacturing [Member]
Spring Manufacturing [Member]
Share Repurchase Program, Authorized, Amount
Stock repurchase program, authorized amount
Statement of Income Location, Balance [Axis]
Statement of Income Location, Balance [Axis]
Trading Symbol
4.75 Percent Notes Due 2026
4.75 Percent Notes Due 2026 [Member]
Debt and Equity Securities, Unrealized Gain (Loss)
Net unrealized appreciation (depreciation) on investments
Net Change in Unrealized Appreciation/ (Depreciation)
Related Party Transaction [Table]
Related Party Transaction [Table]
Education Services
Education Services [Member]
Education Services
Spice And Extract Manufacturing [Member]
Spice And Extract Manufacturing Member
Spice And Extract Manufacturing [Member]
TRS Services, LLC
TRS Services, LLC [Member]
TRS Services, LLC
Investment Advisory Agreement, Incentive Fee
Investment Advisory Agreement, Incentive Fee [Member]
Incentive fee
Subsequent Event Type [Axis]
Subsequent Event Type [Axis]
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Cash flows from financing activities
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage
Commitment fee
Unused Capacity Percentage
First Brands Group, LLC
First Brands Group, LLC [Member]
First Brands Group, LLC
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Realized And Unrealized Gain (Loss) On Investments
Realized And Unrealized Gain (Loss) On Investments [Abstract]
Net realized and unrealized gain (loss) on investments
Distribution Made to Limited Partner, Distributions Declared, Per Unit
Distributions declared per common share (in usd per share)
Equity Components [Axis]
Equity Components [Axis]
First American Treasury Obligations Fund Class Z [Member]
First American Treasury Obligations Fund Class Z [Member]
First American Treasury Obligations Fund Class Z
Investment Advisory Agreement, Incentive Fee Rate, Pre-Incentive Fee Net Income
Investment Advisory Agreement, Incentive Fee Rate, Pre-Incentive Fee Net Income [Member]
Incentive fee, pre-incentive fee net income
Equity Component [Domain]
Equity Component [Domain]
Asset Class [Axis]
Asset Class [Axis]
Investment Company, Financial Highlights [Text Block]
Financial Highlights
Cash Equivalents, Principal Balance, Amount
Cash Equivalents, Principal Balance, Amount
Cash Equivalents, Principal Amount
Public Administration
Public Administration
Public Administration [Member]
Office Machinery And Equipment Rental And Leasing [Member]
Office Machinery And Equipment Rental And Leasing [Member]
Office Machinery and Equipment Rental and Leasing [Member]
Commodity Contracts Dealing [Member]
Commodity Contracts Dealing Member
Investment Company, Investment Income (Loss), Per Share, Basic
Net investment income (in usd per share)
Net investment income per common share - basic (in usd per share)
Proceeds From Disposition Of Investment, Sale Or Redemption, Operating Activity
Proceeds From Disposition Of Investment, Sale Or Redemption, Operating Activity
Proceeds from sale or redemption of portfolio investments
Taxable Blocker Subsidiaries
Taxable Blocker Subsidiaries [Member]
Taxable Blocker Subsidiaries
Customer [Axis]
Customer [Axis]
Interest Income, Operating, Accretion Of Interest Income
Interest Income, Operating, Accretion Of Interest Income [Member]
Accretion of interest income on Structured Finance Securities
O 2026 Q1 Aggregate Dividends Member
O 2026 Q1 Aggregate Dividends Member
O 2026 Q1 Aggregate Dividends [Member]
Maximum [Member]
Maximum
Investment, Tax Basis, Unrealized Gain (Loss)
Tax-basis net unrealized appreciation on investments
Distribution Made to Limited Partner, Distribution Date
Statistical Measurement [Axis]
Statistical Measurement [Axis]
RPLF Holdings, LLC [Member]
RPLF Holdings, LLC [Member]
RPLF Holdings, LLC
All Other General Merchandise Stores [Member]
All Other General Merchandise Stores [Member]
All Other General Merchandise Stores [Member]
Common Stock, Value, Issued
Common stock, par value of $0.01 per share, 100,000,000 shares authorized, 13,398,078 shares issued and outstanding as of March 31, 2026 and December 31, 2025, respectively
Dividends [Axis]
Dividends [Axis]
Warrants and Rights Outstanding
Warrants
Income Tax Contingency [Table]
Income Tax Contingency [Table]
Banc of California Credit Facility
Banc of California Credit Facility [Member]
Banc of California Credit Facility
Investment Company, Expense And Gain (Loss) On Extinguishment Of Debt Ratio
Investment Company, Expense And Gain (Loss) On Extinguishment Of Debt Ratio
Ratio of total expenses net and loss on extinguishment of debt to average net assets
Stock Repurchased During Period Value Dividend ReinvestmentPlan
Stock Repurchased During Period Value Dividend ReinvestmentPlan
6.375 Percent Notes Due 2025
6.375 Percent Notes Due 2025 [Member]
Dividend and Interest Receivable
Interest and dividend receivable
Amortization of Debt Issuance Costs
Amortization of debt issuance costs
Amortization of deferred debt issuance costs
Unsecured Notes
Unsecured Notes [Member]
Entity Public Float
BayMark Health Services, Inc.
BayMark Health Services, Inc. [Member]
BayMark Health Services, Inc.
Preferred Stock, Shares Authorized
Preferred stock, authorized (in shares)
Total Assets To Consolidated Total Assets, Percentage
Total Assets To Consolidated Total Assets, Percentage
Percentage of total consolidated assets
Structured Finance Securities, Subordinated Notes
Structured Finance Securities, Subordinated Notes [Member]
Subordinated notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
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
Administrative and Support and Waste Management and Remediation Services
Administrative and Support and Waste Management and Remediation Services [Member]
Administrative and Support and Waste Management and Remediation Services
Debt Disclosure [Text Block]
Borrowings
Entity Voluntary Filers
CAYMAN ISLANDS
Cayman Islands
Boca Home Care Holdings, Inc.
Boca Home Care Holdings, Inc. [Member]
Boca Home Care Holdings, Inc.
Additional Paid in Capital
Paid-in capital in excess of par
Subsequent Events [Abstract]
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
RideNow Group, Inc. (F/K/A RumbleOn, Inc.) [Member]
RideNow Group, Inc. (F/K/A RumbleOn, Inc.) [Member]
Ride Now Group Inc. (F/K/A RumbleOn, Inc.)
Cash Equivalents, Net Assets, Percentage
Cash Equivalents, Net Assets, Percentage
Cash Equivalents, Percent of Net Assets
Common Stock, Dividends, Per Share, Cash Paid
Distributions, per share (in usd per share)
Sports and Recreation Instruction [Member]
Sports and Recreation Instruction [Member]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements
Proceeds from principal payments on portfolio investments
Investment Company [Abstract]
Costs and Expenses [Abstract]
Expenses
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
Schedule of Significant Level 3 Inputs
Investment Advisory Agreement - Base Management Fee Rate, Quarterly
Investment Advisory Agreement - Base Management Fee Rate, Quarterly [Member]
Base management fee, quarterly
Entity Common Stock, Shares Outstanding
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Concentration of credit risk
Stockholders' Equity, Period Increase (Decrease)
Net increase (decrease)
Interest and Dividend Income, Operating, Paid in Kind
Payment-in-kind interest and dividend income:
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain Loss, Statement Of Income, Extensible List Not Disclosed Flag
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain Loss, Statement Of Income, Extensible List Not Disclosed Flag
Net unrealized appreciation (depreciation) on investments held, location not disclosed
Net asset value per share at end of year (in usd per share)
Net asset value per share at beginning of year (in usd per share)
Net asset value per share
Assets
Assets
Total assets
Income Tax Paid, State and Local, after Refund Received
U.S. state and local income taxes
Investment Company, Distributable Earnings (Loss), Accumulated Capital Loss Carryforward
Capital loss carryforwards
Income Statement [Abstract]
Weighted Average [Member]
Weighted Average
Manufacturing
Manufacturing [Member]
Manufacturing
Debt Issuance Costs, Offering Expenses, Gross
Debt Issuance Costs, Offering Expenses, Gross
Offering expenses
Motorcycle, Bicycle And Parts Manufacturing [Member]
Motorcycle, Bicycle And Parts Manufacturing [Member]
Motorcycle, Bicycle, and Parts Manufacturing [Member]
Other Justice Public Order and Safety Activities [Member]
Other Justice Public Order and Safety Activities [Member]
Other Justice, Public Order, and Safety Activities [Member]
Earnings Per Share, Diluted
Net increase (decrease) in net assets resulting from operations per common share - diluted (in usd per share)
City Area Code
Debt Issuance Costs, Underwriting Fees, Gross
Debt Issuance Costs, Underwriting Fees, Gross
Underwriting fees
Investment, Interest Rate, Paid In Kind, Maximum Allowed
Investment, Interest Rate, Paid In Kind, Maximum Allowed
Maximum PIK rate allowed
Auditor Name
Investment, Interest Rate, Paid in Cash
Interest rate, cash
3 to 5 years
Long-Term Debt, Maturity, Year Four and Five
Long-Term Debt, Maturity, Year Four and Five, Total
Debt Instrument, Face Amount
Principal
Principal
RumbleOn, Inc.
RumbleOn, Inc. [Member]
RumbleOn, Inc.
Line of Credit Facility, Maximum Borrowing Capacity
Borrowing capacity
Borrowing capacity (up to)
Counterparty Name [Domain]
Counterparty Name [Domain]
Asurion LLC [Member]
Asurion LLC [Member]
Asurion, LLC
Investment Company, Tax Return of Capital Distribution, Per Share
Distributions from tax return of capital (in usd per share)
Investment Company, Financial Highlights [Roll Forward]
Investment Company, Financial Highlights [Roll Forward]
OFS Capital Corporation
OFS Capital Corporation [Member]
OFS Capital Corporation
Cash and Cash Equivalents, Policy [Policy Text Block]
Cash and cash equivalents
8.00 Percent Notes due 2029
8.00 Percent Notes due 2029 [Member]
First Lien Debt Investments, Unitranche
First Lien Debt Investments, Unitranche [Member]
First lien debt investments, unitranche
Security 1 Common
Security 1 Common [Member]
Investment Owned, Cash And Cash Equivalents At Principal Amount
Investment Owned, Cash And Cash Equivalents At Principal Amount
Total Investments and Cash Equivalents, Principal Amount
Investment Company, Financial Support to Investee Contractually Required, Not Provided, Amount
Commitment
RideNow Group, Inc.
RideNow Group, Inc. [Member]
RideNow Group, Inc.
Retained Earnings [Member]
Total distributable earnings (accumulated losses)
Cash and Cash Equivalents [Axis]
Fair Value, Inputs, Level 1 [Member]
Level 1
Class of Stock [Line Items]
Class of Stock [Line Items]
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Net cash used in financing activities
One GI LLC
One GI LLC [Member]
One GI LLC
Investment Company, Distributable Earnings (Loss), Accumulated Long-Term Capital Gain (Loss)
Undistributed earnings and profits (OFSCC-MB; C-Corporation)
Investment Owned, Number of Investments Not Held In Portfolio Companies
Investment Owned, Number of Investments Not Held In Portfolio Companies
Number of non-portfolio investments
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss)
Net unrealized appreciation (depreciation) on investments held
Idera Inc [Member]
Idera Inc [Member]
Idera Inc [Member]
Auditor Location
Investment Advisory Agreement, Incentive Fee Rate, Quarterly Hurdle Rate
Investment Advisory Agreement, Incentive Fee Rate, Quarterly Hurdle Rate [Member]
Incentive fee, quarterly hurdle rate
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales
Sale and redemption of portfolio investments
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Entity Interactive Data Current
Statement of Income Location, Balance [Domain]
Statement of Income Location, Balance [Domain]
Fair Value Measurement [Domain]
Fair Value Measurement [Domain]
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
Cash flows from operating activities
Excise And Sales Tax Expense (Reversal)
Excise And Sales Tax Expense (Reversal)
U.S. federal excise taxes (refunds)
Accretion (Amortization) of Discounts and Premiums, Investments
Accretion of interest income on Structured Finance Securities
Pfanstiehl Holdings, Inc
Pfanstiehl Holdings, Inc [Member]
Pfanstiehl Holdings, Inc.
Cash Equivalents, at Carrying Value
Cash equivalents
Cash Equivalents, Amortized Cost
Cash Equivalents, at Carrying Value, Total
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
Schedule of Portfolio Concentrations
Entity Tax Identification Number
Revenues [Abstract]
Investment income
Long-Term Debt, Type [Axis]
Long-Term Debt, Type [Axis]
Debt Instrument, Term
Term
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Organization
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings
Amounts included in earnings
Investment Owned, Amortized Cost, Percent Of Net Assets
Investment Owned, Amortized Cost, Percent Of Net Assets
Percentage of Total, Net Assets
Local Phone Number
Related Party Transaction [Domain]
Related Party Transaction [Domain]
Gross Investment Income, Operating
Total investment income
Preferred Class A [Member]
Preferred Class A [Member]
Real Estate And Rental And Leasing
Real Estate And Rental And Leasing [Member]
Real Estate and Rental and Leasing
Measurement Input, Revenue Multiple [Member]
Revenue multiples
Accounting Policies [Abstract]
Stock Issued During Period, Shares, Dividend Reinvestment Plan
DRIP Shares Issued (in shares)
Investment Company, Tax Reclassification, Increase (Decrease)
Permanent differences, reclassifications to (increase) decrease additional paid-in capital against total distributable earnings (accumulated loss)
Tax reclassifications of permanent differences
Net Income (Loss) Attributable to Parent [Abstract]
Net increase (decrease) in net assets resulting from operations:
Investment Company, Contractual Fee Waived
Reduction in base management fee
Investment Company, Contractual Fee Waived, Total
Base management fee waiver (see Note 3)
Base management fee waiver
Class of Stock [Domain]
Class of Stock [Domain]
Federal Income Tax Note [Table]
Federal Income Tax Note [Table]
Affiliated Entity [Member]
Affiliated entity
Stock, Class of Stock [Table]
Stock, Class of Stock [Table]
Entity Emerging Growth Company