75000 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 75010 - Statement - Consolidated Statements of Assets and Liabilities link:presentationLink link:calculationLink link:definitionLink 75020 - Statement - Consolidated Statements of Assets and Liabilities (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 75030 - Statement - Consolidated Statements of Operations (Unaudited) link:presentationLink link:calculationLink link:definitionLink 75040 - Statement - Consolidated Statements of Changes in Net Assets (Unaudited) link:presentationLink link:calculationLink link:definitionLink 75050 - Statement - Consolidated Statements of Cash Flows (Unaudited) link:presentationLink link:calculationLink link:definitionLink 75060 - Statement - Consolidated Schedule of Investments (Unaudited) link:presentationLink link:calculationLink link:definitionLink 75060 - Statement - Consolidated Schedule of Investments (Unaudited) [Default] link:presentationLink link:calculationLink link:definitionLink 75070 - Statement - Statement - Consolidated Schedule of Investments (Unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 75080 - Statement - Consolidated Schedule of Investments (Unaudited) - Unfunded Commitment link:presentationLink link:calculationLink link:definitionLink 75080 - Statement - Consolidated Schedule of Investments (Unaudited) - Unfunded Commitment [Default] link:presentationLink link:calculationLink link:definitionLink 75090 - Statement - Consolidated Schedule of Investments (Unaudited) (continued) - Transactions Related to Investments in Non-Controlled Affiliates and Investments in Controlled Affiliates link:presentationLink link:calculationLink link:definitionLink 75090 - Statement - Consolidated Schedule of Investments (Unaudited) (continued) - Transactions Related to Investments in Non-Controlled Affiliates and Investments in Controlled Affiliates [Default] link:presentationLink link:calculationLink link:definitionLink 75100 - Statement - Consolidated Schedule of Investments (Unaudited) - Interest Rate Swaps link:presentationLink link:calculationLink link:definitionLink 75100 - Statement - Consolidated Schedule of Investments (Unaudited) - Interest Rate Swaps [Default] link:presentationLink link:calculationLink link:definitionLink 995480 - Disclosure - ORGANIZATION link:presentationLink link:calculationLink link:definitionLink 995490 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 995500 - Disclosure - SIGNIFICANT AGREEMENTS AND RELATED PARTY TRANSACTIONS link:presentationLink link:calculationLink link:definitionLink 995510 - Disclosure - INVESTMENTS link:presentationLink link:calculationLink link:definitionLink 995520 - Disclosure - FAIR VALUE MEASUREMENTS link:presentationLink link:calculationLink link:definitionLink 995530 - Disclosure - DEBT link:presentationLink link:calculationLink link:definitionLink 995540 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 995550 - Disclosure - NET ASSETS link:presentationLink link:calculationLink link:definitionLink 995560 - Disclosure - EARNINGS (LOSS) PER SHARE link:presentationLink link:calculationLink link:definitionLink 995570 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 995580 - Disclosure - CONSOLIDATED FINANCIAL HIGHLIGHTS link:presentationLink link:calculationLink link:definitionLink 995590 - Disclosure - SUBSEQUENT EVENTS link:presentationLink link:calculationLink link:definitionLink 995600 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 995610 - Disclosure - INVESTMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 995620 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 995630 - Disclosure - DEBT (Tables) link:presentationLink link:calculationLink link:definitionLink 995640 - Disclosure - NET ASSETS (Tables) link:presentationLink link:calculationLink link:definitionLink 995650 - Disclosure - EARNINGS (LOSS) PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 995660 - Disclosure - CONSOLIDATED FINANCIAL HIGHLIGHTS (Tables) link:presentationLink link:calculationLink link:definitionLink 995670 - Disclosure - ORGANIZATION (Details) link:presentationLink link:calculationLink link:definitionLink 995680 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 995690 - Disclosure - SIGNIFICANT AGREEMENTS AND RELATED PARTY TRANSACTIONS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 995700 - Disclosure - INVESTMENTS - Composition of The Company's Investment Portfolio (Details) link:presentationLink link:calculationLink link:definitionLink 995710 - Disclosure - INVESTMENTS - Industry Composition of Investments at Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 995720 - Disclosure - INVESTMENTS - Geographic Composition of Investments at Cost and Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 995730 - Disclosure - INVESTMENTS - Schedule of consolidated statement of assets and liabilities information (Details) link:presentationLink link:calculationLink link:definitionLink 995740 - Disclosure - INVESTMENTS - Schedule of consolidated statement of assets and liabilities information (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 995750 - Disclosure - INVESTMENTS - Schedule of consolidated statements of operations information (Details) link:presentationLink link:calculationLink link:definitionLink 995760 - Disclosure - INVESTMENTS - Summary of Capstone Lending Portfolio (Details) link:presentationLink link:calculationLink link:definitionLink 995770 - Disclosure - INVESTMENTS (Additional Information) (Details) link:presentationLink link:calculationLink link:definitionLink 995780 - Disclosure - INVESTMENTS - Schedule of Investments in Joint Venture (Details) link:presentationLink link:calculationLink link:definitionLink 995780 - Disclosure - INVESTMENTS - Schedule of Investments in Joint Venture (Details) [Default] link:presentationLink link:calculationLink link:definitionLink 995790 - Disclosure - INVESTMENTS - Schedule of Investments in Joint Venture (Details) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 995800 - Disclosure - FAIR VALUE MEASUREMENTS - Fair Value Levels (Details) link:presentationLink link:calculationLink link:definitionLink 995810 - Disclosure - FAIR VALUE MEASUREMENTS - Level III Rollforward (Details) link:presentationLink link:calculationLink link:definitionLink 995820 - Disclosure - FAIR VALUE MEASUREMENTS - Unobservable Inputs (Details) link:presentationLink link:calculationLink link:definitionLink 995830 - Disclosure - FAIR VALUE MEASUREMENTS - Unobservable Inputs Relevant to the Company's Determination of Fair Value (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 995840 - Disclosure - FAIR VALUE MEASUREMENTS - Carrying Value and Fair Value of Debt (Details) link:presentationLink link:calculationLink link:definitionLink 995850 - Disclosure - FAIR VALUE MEASUREMENTS - The carrying value, fair value and level of the Company''s debt (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 995860 - Disclosure - DEBT - Schedule of Debt Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 995870 - Disclosure - DEBT - Schedule of Debt Obligations (Details) (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 995880 - Disclosure - DEBT - Summary Information of Debt Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 995890 - Disclosure - DEBT - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 995900 - Disclosure - DEBT - Schedule of Long-Term Debt (Details) link:presentationLink link:calculationLink link:definitionLink 995910 - Disclosure - DEBT - Information on the Secured Notes Issued and the Secured Loans (Details) link:presentationLink link:calculationLink link:definitionLink 995920 - Disclosure - DEBT - Secured Notes Issued and the Secured Loans (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 995930 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details) link:presentationLink link:calculationLink link:definitionLink 995940 - Disclosure - NET ASSETS - Schedule of Distributable Earnings (Details) link:presentationLink link:calculationLink link:definitionLink 995950 - Disclosure - NET ASSETS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 995960 - Disclosure - NET ASSETS - Distributions Declared and Payable (Details) link:presentationLink link:calculationLink link:definitionLink 995970 - Disclosure - NET ASSETS - Schedule of Shares Repurchased Under Company 10b5-1 Plan (Details) link:presentationLink link:calculationLink link:definitionLink 995980 - Disclosure - EARNINGS (LOSS) PER SHARE (Details) link:presentationLink link:calculationLink link:definitionLink 995990 - Disclosure - CONSOLIDATED FINANCIAL HIGHLIGHTS (Details) link:presentationLink link:calculationLink link:definitionLink 996000 - Disclosure - CONSOLIDATED FINANCIAL HIGHLIGHTS - Schedule of Financial Highlights (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 996010 - Disclosure - SUBSEQUENT EVENTS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink IT Services Sector IT Services Sector [Member] IT Services Sector Two Thousand Thirty One Notes [Member] Two Thousand Thirty One Notes [Member] 2031 Notes Increase (Decrease) in Interest Payable, Net (Decrease) increase in interest payable Concentration Risk Type [Axis] Dividend and Interest Receivable Non Controlled and Non Affiliated Interest and dividend receivable from non-controlled/non-affiliated investments Dividend and Interest Receivable, Non-Controlled and Non-Affiliated Entity Incorporation, State or Country Code Preferred Stock, Shares Issued Preferred stock, shares issued (in shares) Pre-Incentive Fee Rate Quarterly Catch Up Threshold Pre-Incentive Fee Rate Quarterly Catch Up Threshold [Member] Pre-Incentive Fee Rate Quarterly Catch Up Threshold Health Care Equipment And Supplies Sector Health Care Equipment And Supplies Sector [Member] Health Care Equipment & Supplies Life Sciences Tools And Services Sector Life Sciences Tools And Services Sector [Member] Life Sciences Tools & Services Summary of Capstone Lending portfolio [Table Text Block] Summary Of Capstone Lending portfolio [Table Text Block] Summary of Capstone Lending portfolio Shares Acquired, Average Cost Per Share Average price paid per share (in dollars per share) Repurchase of common stock (in dollars per share) Schedule of Long-Term Debt Instruments [Table Text Block] Schedule of Long-Term Debt Instruments Equity [Abstract] Entity Current Reporting Status Class of Financing Receivable [Axis] Dividends Payable, Amount Per Share Operating Expenses [Abstract] Expenses: Financial Services Sector [Member] Financial Services Fair Value, Inputs, Level 2 [Member] Level 2 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, shares authorized (in shares) O 2026 M5 Aggregate Dividends O 2026 M5 Aggregate Dividends [Member] O 2026 M5 Aggregate Dividends. From non-controlled/affiliated investments: Investment, Affiliated Issuer, Noncontrolled [Member] Non-Controlled/Affiliated Investments Investment, Policy [Policy Text Block] Investments Money Market Funds Investment Preferred Equity [Member] Investment Preferred Equity [Member] Investment Preferred Equity [Member] Document Fiscal Period Focus Debt Instrument, Interest Rate, Stated Percentage Loan includes interest rate floor Fixed interest rate Entity Shell Company Interactive Media And Services Sector Interactive Media And Services Sector [Member] Interactive Media & Services Segment Reporting, Policy [Policy Text Block] Segment Reporting Cash and Cash Equivalent Cash and Cash Equivalent, Total Cash and Cash Equivalent Cash and cash equivalents (restricted cash of $8,600 and $3,820) Three Month Secured Overnight Financing Rate (SOFR) [Member] Three Month Secured Overnight Financing Rate (SOFR) [Member] 3-Month Secured Overnight Financing Rate (SOFR) [Member] Commissions Payable To 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Increase (Decrease) in Management Fee Payable (Decrease) increase in management fees payable Repayments of Long-Term Debt Repayments on debt Director Fee Directors’ fees Investment Company, Share Issuance Including Impact Of Dilution, Per Share Investment Company, Share Issuance Including Impact Of Dilution, Per Share Issuance of common stock, net of underwriting and offering costs (in dollars per share) Issuance of common stock, net of underwriting and offering costs (in dollars per share) Investment Company, Total Return Total return based on net asset value (in percent) Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash provided by (used in) operating activities: 1-Month Euro Interbank Offered Rate (EURIBOR) [Member] One Month Euro Interbank Offered Rate (EURIBOR) [Member] One Month Euro Interbank Offered Rate (EURIBOR) [Member] Dividends 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Liabilities [Abstract] Liabilities Base Rate [Member] Base Rate Administrative Fees Expense Administrative service fees Incentive Fee Expense, Income-Based Income based incentive fees Measurement Input, EBITDA Multiple [Member] EBITDA Multiple Investment Company, Expense, after Reduction of Fee Waiver and Reimbursement Net expenses Net realized (gain) loss on investments Realized Investment Gains (Losses) Realized Investment Gains (Losses), Total Net realized gain (loss) on non-controlled/non-affiliated investments Interest Income, Operating, Paid in Cash Interest income Debt Disclosure [Abstract] Money Market Funds Percent Of Net Assets Money Market Funds Percent Of Net Assets Cash and cash equivalents at percent of net assets Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Purchases of investments Transportation Equipment [Member] Transportation Infrastructure Investments in and Advances to Affiliates, at Fair Value, Gross Additions Gross Additions Estimate of Fair Value Measurement [Member] Fair Value Amortization Of Deferred Financing Costs Amortization Of Deferred Financing Costs Amortization of deferred financing costs Ownership [Domain] Ownership [Domain] Current Fiscal Year End Date Schedule of Long-Term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Distributors Distributors Sector Distributors Sector [Member] Upfront Payments/Receipts Payments for (Proceeds from) Hedge, Financing Activities Payments for (Proceeds from) Hedge, Financing Activities, Total Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Number Of Industries Number Of Industries Accounts Payable, Other Payable to affiliates (Note 3) Payable to affiliates O 2026 M2 Aggregate Dividends O 2026 M2 Aggregate Dividends [Member] O 2026 M2 Aggregate Dividends [Member] Entity Address, State or Province Payments of Deferred Financing 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Morgan US Government Money Market Fund [Member] J.P. Morgan US Government Money Market Fund [Member] J.P. 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Swaps Unrealized Appreciation (Depreciation) Change in Unrealized Appreciation/(Depreciation) Number Of Portfolio Companies Number of Portfolio Companies Federal Reserve Bank of New York Rate Federal Reserve Bank of New York Rate [Member] Federal Reserve Bank of New York Rate Weighted Average [Member] Weighted Average Technology Sector [Member] IT Services Sale of Stock, Number of Shares Issued in Transaction Shares Issued (in shares) Ground Transportation Sector Ground Transportation Sector [Member] Ground Transportation August One to August Thirty One Two Thousand Twenty Four [Member] August One to August Thirty One Two Thousand Twenty Four [Member] August 1 - August 31, 2024 Earnings Per Share, Diluted Diluted earnings (loss) per share (in dollars per share) Earnings per share - diluted O 2024 M8 Aggregate Dividends O 2024 M8 Aggregate Dividends [Member] O 2024 M8 Aggregate Dividends CLO 2025-1 Debt [Member] CLO 2025-1 Debt [Member] City Area Code Life Sciences Tools And Services 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Percentage Of Holders Debt Instrument, Outstanding Principal. Percentage Of Holders Percentage of holders representing outstanding principal Entity Emerging Growth Company July One to July Thirty One Two Thousand Twenty Four [Member] July One to July Thirty One Two Thousand Twenty Four [Member] July 1 - July 31, 2024 Sterling Overnight Index Average (SONIA) [Member] Euro Interbank Offered Rate (EURIBOR) [Member] Euro Interbank Offered Rate (EURIBOR) Sterling Overnight Index Average (SONIA) Euro Interbank Offered Rate (EURIBOR) Canadian Overnight Repo Rate Average (CORRA) Canadian Overnight Repo Rate Average (CORRA) [Member] Sterling Overnight Index Average (SONIA) Canadian Overnight Repo Rate Average (CORRA)