Total Level 3 Assets Investments, Excluding Investments Where Valuation (Unadjusted) Obtained From Third-Party Pricing Service [Member] Investments, Excluding Investments Where Valuation (Unadjusted) Obtained From Third-Party Pricing Service Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Quarterly hurdle rate percentage Quarterly Hurdle Rate Percentage Represents information pertaining to percentage of hurdle rate per quarter. Statistical Measurement [Domain] Statistical Measurement [Domain] Facility Termination Event Rate 1 Facility Termination Event Rate 1 [Member] Facility Termination Event Rate 1 Non-controlled/non-affiliate company investments Non-controlled/non-affiliate company investments Investment, Unaffiliated Issuer [Member] Second part incentive fee payable, percentage Second Part of Incentive Fee Payable, Percentage on Capital Gains Percentage of second part of incentive fee payable on realized capital gains with related parties. Award Timing Predetermined Award Timing Predetermined [Flag] Related Party Transaction [Axis] Related Party Transaction [Axis] Foreign currency forward contract 3 Foreign Currency Forward Contract 3 [Member] Foreign Currency Forward Contract 3 Asset Class [Axis] Asset Class [Axis] Entity File Number Securities Act File Number Capital in excess of par value Additional Paid-in Capital [Member] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Net investment income per share - basic (in dollars per share) Net Investment Income Per Share, Basic Represents the net investment income per share, basic. Net gain (loss) Gain (Loss), Investment, Derivative, and Foreign Currency Transaction Price Change, Operating, before Tax DB Credit Facility DB Credit Facility [Member] DB Credit Facility Tabular List, Table Tabular List [Table Text Block] Open Forward Foreign Currency Contract, Identifier [Axis] Open Forward Foreign Currency Contract, Identifier [Axis] Net realized and unrealized gain (loss) (in dollars per share) Investment Company, Gain (Loss) on Investment, Per Share Foreign currency forward contract 11 Foreign Currency Forward Contract 11 [Member] Foreign Currency Forward Contract 11 Schedule of Distributions Declared Dividends Declared [Table Text Block] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Schedule of Composition of the Company's Incentive Fees Schedule of Related Party Transactions [Table Text Block] Construction & Building Construction & Building [Member] Construction & Building Part one incentive fees Incentive Fee Expense, Part One Amount of expense for incentive rights held by the managing member or general partner, of limited liability company (LLC) or limited partnership (LP) Part one. Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Net increase (decrease) in net assets resulting from operations per share - basic (in dollars per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Transactions with Related Parties Related Party Transactions Disclosure [Text Block] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Payable for unsettled trades Increase (Decrease) in Accounts Payable, Trade Specified percentage of hurdle rate, considered for payment of incentive fee, prior to an exchange listing Specified Percentage Of Hurdle Rate, Considered For Payment Of Incentive Fee, Prior To An Exchange Listing Specified Percentage Of Hurdle Rate, Considered For Payment Of Incentive Fee, Prior To An Exchange Listing Net gain (loss): Gain (Loss) on Investments [Abstract] Schedule of Committed Capital Schedule Of Committed Capital [Table Text Block] Schedule Of Committed Capital EBITDA multiples Measurement Input, EBITDA Multiple [Member] Initial base management fee, percentage Initial Base Management Fee, Percentage Percentage of initial base management fee with related parties. Measurement Input Type [Domain] Measurement Input Type [Domain] Adjustment to Compensation, Amount Adjustment to Compensation Amount Concentration risk, percentage Concentration Risk, Percentage Affiliated Entity Affiliated Entity [Member] Total net change in unrealized gain (loss) on investments attributable to Level 3 investments still held Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss) Other assets Increase (Decrease) in Other Operating Assets Consolidation Consolidation, Policy [Policy Text Block] Part two incentive fees Incentive Fee Expense, Part Two Amount of expense for incentive rights held by the managing member or general partner, of limited liability company (LLC) or limited partnership (LP) Part two. Notional Amount 
to be Purchased Derivative Asset, Notional Amount Telecommunications Telecommunications [Member] Telecommunications Employee Stock Option Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Annual hurdle rate percentage Annual Hurdle Rate Percentage Represents information pertaining to percentage of hurdle rate per year. Deferred organizational and operating expenses Deferred Tax Assets, Tax Deferred Expense Distribution Declared Dividends, Common Stock, Cash Total net assets Net assets Equity, Attributable to Parent Derivative Instruments Derivative Instruments, Gain (Loss) [Line Items] Insider Trading Policies and Procedures [Line Items] Net increase (decrease) in net assets resulting from operations (in dollars per share) Investment Company, Investment Income (Loss) from Operations, Per Share Number of portfolio companies Number Of Portfolio Companies Number Of Portfolio Companies Issuance of common stock - Class I (in shares) Shares issued (in shares) Stock Issued During Period, Shares, New Issues Total liabilities and total net assets Liabilities and Equity Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Foreign currency forward contract 16 Foreign Currency Forward Contract 16 [Member] Foreign Currency Forward Contract 16 Excise tax accrued (in percent) Excise Tax Accrued, Percentage Percentage of excise tax accrued, calculated as a percentage of the estimated excess taxable income, if any, as taxable income is earned. Cover [Abstract] Cover [Abstract] Maximum Maximum [Member] Accounting Policies [Abstract] Accounting Policies [Abstract] Total incentive fees, net of incentive fee waivers Incentive Fee Expense, Net Of Incentive Fee Waivers Incentive Fee Expense, Net Of Incentive Fee Waivers Concentration Risk Type [Domain] Concentration Risk Type [Domain] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Borrowings Debt Instrument [Line Items] Incentive fees payable Incentive Fee Payable Upfront loan origination and closing fees received Proceeds From Upfront Loan Origination And Closing Fees On Debt Investments Amount of cash inflow from upfront loan origination and closing fees on debt investments. Investment, Identifier [Axis] Investment, Identifier [Axis] Distributions Dividends Payable [Line Items] Containers, Packaging & Glass Containers, Packaging & Glass [Member] Containers, Packaging & Glass Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Investments, at fair value: Fair value Fair Value Investment Owned, Fair Value Initial Seed Investor Initial Seed Investor [Member] Initial Seed Investor Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Liabilities Liabilities [Abstract] Summary of Investment Holdings [Table] Investment Holdings [Table] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Entity Shell Company Entity Shell Company Average stated interest rate (1) Long-Term Debt, Weighted Average Interest Rate, over Time Southeast US Southeast Region [Member] Schedule of Composition of the Company's Investment Portfolio Summary Investment Holdings [Table Text Block] Average debt outstanding Long-Term Debt, Average Amount Outstanding Southwest US Southwest Region [Member] 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] Schedule of Long-Term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Borrowings on debt Proceeds from Issuance of Debt Automotive Automotive Sector [Member] Reconciliation of beginning and ending balances for investments at fair value that use Level 3 inputs Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Interest and dividend receivable Increase (Decrease) in Interest and Dividends Receivable Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Cash Cash Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Measurement Input Type [Axis] Measurement Input Type [Axis] Investment, Issuer Affiliation [Axis] Investment, Issuer Affiliation [Axis] Name Measure Name Accretion of discounts and amortization of premiums Investment Income, Net, Amortization of Discount and Premium Base management fees Management fee expense Management Fee Expense Gross Amount of Unrealized Loss Derivatives, Gross Unrealized Loss Amount of gross unrealized loss on derivatives. Environmental Industries Environmental Industries [Member] Represents the information pertaining to Environmental Industries Sector. Industry Sector [Domain] Industry Sector [Domain] Document Fiscal Period Focus Document Fiscal Period Focus Award Timing Method Award Timing Method [Text Block] O 2026 M3 Dividends O 2026 M3 Dividends [Member] O 2026 M3 Dividends Revenue multiples Measurement Input, Revenue Multiple [Member] Award Type Award Type [Axis] Healthcare & Pharmaceuticals Healthcare & Pharmaceuticals Sector [Member] Represents the information pertaining to Sector of the economy consisting of companies engaged in Healthcare & Pharmaceuticals. Services: Consumer Services Consumer Sector [Member] Represents the information pertaining to Sector of the economy consisting of companies engaged in Services: Consumer. Total debt, less unamortized debt issuance costs Carrying Value Carrying Value Long-Term Debt Legal Entity [Axis] Legal Entity [Axis] Total assets Assets Investments Denominated in Foreign Currency Investments Denominated in Foreign Currency, Policy [Policy Text Block] Disclosure of accounting policy for investments denominated in foreign currency. PIK dividends Dividend Income, Operating, Paid in Kind Restricted Cash and Cash Equivalents Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Geographical [Domain] Geographical [Domain] Income Taxes Income Tax, Policy [Policy Text Block] Entity Address, City or Town Entity Address, City or Town Open Forward Foreign Currency Contract [Table] Open Forward Foreign Currency Contract [Table] Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount DB Credit Facility MC Income Plus Financing SPV LLC [Member] This member stands for MC Income Plus Financing SPV LLC. Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Foreign currency forward contract 1 Foreign Currency Forward Contract 1 [Member] Foreign Currency Forward Contract 1 Company investments as percentage of net assets Company Investment As Percentage Of Net Assets Represents information pertaining to company investments as percentage of net assets. Entity Emerging Growth Company Entity Emerging Growth Company Amount per share (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Principal Investment Owned, Balance, Principal Amount Stock repurchase program, deduction in net asset value, percentage Stock Repurchase Program, Deduction in Net Asset Value, Percentage Stock Repurchase Program, Deduction in Net Asset Value, Percentage Base management fee waiver Investment Company, Management Fee, Contractual Fee Waived 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] Level 2 Fair Value, Inputs, Level 2 [Member] Less: Unamortized debt issuance costs Unamortized deferred financing costs Debt Issuance Costs, Net Foreign currency forward contracts Derivative, Gain (Loss) on Derivative, Net Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Foreign currency forward contract 14 Foreign Currency Forward Contract 14 [Member] Foreign Currency Forward Contract 14 Related Party Related Party [Member] Common shares outstanding (in shares) Common stock, outstanding (in shares) Common Stock, Shares, Outstanding Schedule of Fund's Interest and Other Debt Financing Expenses Schedule Of Interest Expense, Other Debt Financing Expenses, Average Outstanding Balances And Average Stated Interest Rates [Table Text Block] Tabular disclosure of interest expense, other debt financing expenses, average outstanding balances and average stated interest rates. Trustees' fees payable Trustees' Fees Payable Trustees' Fees Payable Document Information [Table] Document Information [Table] PEO PEO [Member] Changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Foreign currency forward contract 13 Foreign Currency Forward Contract 13 [Member] Foreign Currency Forward Contract 13 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] Asset coverage ratio Asset Coverage Ratio, Percentage Percentage of asset coverage ratio based on aggregate borrowings outstanding. Nature of Operation, Product Information, Concentration of Risk [Table] Nature of Operation, Product Information, Concentration of Risk [Table] Percentage of company's realized capital gains payable as incentive fee Incentive Fee Payable As A Percentage Of Company's Realized Capital Gains Represents information pertaining to incentive fee payable as a percentage of the Company's realized capital gains as of the end of the fiscal year. Media: Advertising, Printing & Publishing Media: Advertising, Printing & Publishing Represents the information pertaining to Media: Advertising, Printing & Publishing Sector. Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Accumulated undistributed (overdistributed) earnings Retained Earnings [Member] Accounts payable and accrued expenses Accounts Payable and Accrued Liabilities Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Cash and restricted cash and cash equivalents, beginning of period Cash and restricted cash and cash equivalents, end of period Total cash and restricted cash and cash equivalents shown on the Consolidated Statement of Cash Flows Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] U.S. federal and state corporate-level income taxes, net tax expense Income Tax Expense (Benefit) Base management fee waiver Investment Company, Voluntary Fee Waived Interest rate, basis spread Debt Instrument, Basis Spread on Variable Rate Sale of Stock [Domain] Sale of Stock [Domain] Other assets Other Assets Balance at the beginning Balance at the end Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Total fair value of investments Investments, Fair Value Disclosure Interest payable Increase (Decrease) in Interest Payable, Net Document Information [Line Items] Document Information [Line Items] Foreign currency forward contract 6 Foreign Currency Forward Contract 6 [Member] Foreign Currency Forward Contract 6 Purchases of investments Payment for Purchase, Investment, Operating Activity Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Retail Retail Sector [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Total return based on average net asset value Investment Company, Total Return Trustees' fees payable Trustee Fees Dividends [Abstract] Dividends [Abstract] Interest expense - DB Credit Facility Interest Expense, Debt, Excluding Amortization Net investment income before income taxes Net Investment Income O 2026 M1 Dividends O 2026 M1 Dividends [Member] O 2026 M1 Dividends Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Foreign currency forward contract 21 Foreign Currency Forward Contract 21 [Member] Foreign Currency Forward Contract 21 Distributions declared to shareholders - Class I Investment Company, Dividend Distribution Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Foreign currency forward contract 19 Foreign Currency Forward Contract 19 [Member] Foreign Currency Forward Contract 19 City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Interest Rate, Cash Investment, Interest Rate, Paid in Cash Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Incentive fee waivers Incentive Fee Waivers Incentive Fee Waivers General and administrative expenses General and Administrative Expense Total operating expenses, net of fee waivers and expense support Investment Company, Expense, after Reduction of Fee Waiver and Reimbursement Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Net cash provided by (used in) operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Excess of capital gains (in percent) Percentage Of Capital Gains The percentage of capital gains. Related Party Transactions [Abstract] Related Party Transactions [Abstract] Incentive fees Total incentive fees Incentive Fee Expense Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Proceeds from principal payments and sales of investments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Subsequent Event Subsequent Event [Member] Number of senior secured loans Number Of Senior Secured Loans Number Of Senior Secured Loans Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Containers, Packaging & Glass Container and Packaging Sector [Member] Interest Rate, PIK Investment, Interest Rate, Paid in Kind MC Management Monroe Capital Management Advisors, LLC [Member] Represents the information pertaining to Monroe Capital Management Advisors, LLC, Our administrative advisor. Schedule of Investments [Abstract] Schedule of Investments [Abstract] Equity Components [Axis] Equity Components [Axis] Entity Ex Transition Period Entity Ex Transition Period International Non-US [Member] Investment Company, Financial Highlights [Abstract] Investment Company, Financial Highlights [Abstract] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Number of reportable segments Number of Reportable Segments Schedule of Financial Highlights and Supplemental Ratios Investment Company, Financial Highlights [Table Text Block] Expense support (Note 5) Investment Company, Expense Offset Arrangement Coverage ratio Management And Service Fees, Asset Coverage Ratio, Maximum Management And Service Fees, Asset Coverage Ratio, Maximum Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Expense Support Agreement Expense Support Agreement [Member] Expense Support Agreement Other Performance Measure, Amount Other Performance Measure, Amount O 2026 M2 Dividends O 2026 M2 Dividends [Member] O 2026 M2 Dividends Schedule of Restrictions on Cash and Cash Equivalents Restrictions on Cash and Cash Equivalents [Table Text Block] Entity Address, State or Province Entity Address, State or Province Ratio of net investment income to average net assets with waivers and expense support Investment Company, Investment Income (Loss) Ratio Unused borrowing capacity, amount Debt Instrument, Unused Borrowing Capacity, Amount Related Party [Domain] Related and Nonrelated Parties [Domain] Deferred organizational and operating expenses Increase (Decrease) in Deferred Charges Net increase (decrease) in cash and restricted cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation Administrative expenses Professional Fees, Administrative Service Fees And General And Administrative Expenses Amount of expenses relating to Professional fees, Administrative service fees and General and administrative expenses. Derivative Instrument [Axis] Derivative Instrument [Axis] Individual: Individual [Axis] Total restricted cash and cash equivalents Restricted Cash Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Foreign currency forward contract 5 Foreign Currency Forward Contract 5 [Member] Foreign Currency Forward Contract 5 Investments [Abstract] Investments [Abstract] Entity [Domain] Entity [Domain] Foreign currency forward contract 22 Foreign Currency Forward Contract 22 [Member] Foreign Currency Forward Contract 22 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] Cash interest paid during the period Interest Paid, Excluding Capitalized Interest, Operating Activity Gross Amount of Unrealized Gain Derivatives, Gross Unrealized Gain Amount of gross unrealized gain on derivatives. Document Fiscal Year Focus Document Fiscal Year Focus Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Distributions Investment Company, Distribution [Policy Text Block] Entity Interactive Data Current Entity Interactive Data Current Accordion feature, total facility amount Line Of Credit Facility, Maximum Borrowing Capacity, Including Accordion Feature Line Of Credit Facility, Maximum Borrowing Capacity, Including Accordion Feature Commitment to fund additional equity investment Investment Company, Committed Capital Net change in unrealized gain (loss): Unrealized Investment Gains (Losses) [Abstract] No definition available. Distributions Distributions [Text Block] The entire disclosure for distributions. Healthcare Sector Healthcare Sector [Member] Revenue Market Yields Measurement Input, Probability Revenue Market Yields [Member] Measurement Input, Probability Revenue Market Yields West US West Region [Member] Derivative Instruments Derivatives, Policy [Policy Text Block] Segment Reporting Segment Reporting Disclosure [Text Block] Amortized cost Amortized
Cost Investment Owned, Cost Fair Value Measurements Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Senior secured loans Senior secured loans Senior Loans [Member] Prepayment gain (loss) Investment Income, Gain (Loss) From Prepayment Amount of gain (loss) on prepayment related to investment income. CHANGES IN NET ASSETS Increase (Decrease) in Stockholders' Equity [Roll Forward] Management fees, base Management Fees, Base Management Fees, Base Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Organizational costs Organizational Cost, Expense Weighted Average Mean Weighted Average [Member] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Restricted cash and cash equivalents Restricted cash and cash equivalents Restricted Cash and Cash Equivalent, Current Volatility Measurement Input, Price Volatility [Member] Construction & Building Construction Sector [Member] Net change in unrealized gain (loss) Unrealized Gain (Loss), Investment and Derivative, Operating, after Tax Net asset value per 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 Entity Central Index Key Entity Central Index Key PEO Name PEO Name Incentive fee payable as a percentage of pre-incentive fee net investment income, if portion of such income exceeds the hurdle rate but is less than the specified hurdle rate in any calendar quarter Incentive Fee Payable As A Percentage Of Pre-Incentive Fee Net Investment Income, If Portion Of Such Income Exceeds The Hurdle Rate But Is Less Than The Specified Hurdle Rate In Any Calendar Quarter Represents information pertaining to incentive fee payable as a percentage of pre-incentive fee net investment income, if portion of such income exceeds the hurdle rate but is less than the specified hurdle rate in any calendar quarter. Aggregate consideration received Sale of Stock, Consideration Received on Transaction 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] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Schedule of Issuance of Shares Schedule of Stockholders Equity [Table Text Block] DB Credit Facility Revolving Credit Facility [Member] Foreign currency forward contract 18 Foreign Currency Forward Contract 18 [Member] Foreign Currency Forward Contract 18 Midwest US Midwest Region [Member] Option pricing model Valuation Technique, Option Pricing Model [Member] Arrangement Duration Trading Arrangement Duration Foreign currency forward contract 7 Foreign Currency Forward Contract 7 [Member] Foreign Currency Forward Contract 7 Investment Owned, At Cost Investment Owned, At Cost [Member] Investment Owned, At Cost Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Dividend income Dividend Income, Operating Local Phone Number Local Phone Number Class of Stock [Domain] Class of Stock [Domain] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Common Class S Common Class S [Member] Common Class S Assets Assets [Abstract] Credit Facility [Axis] Credit Facility [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Debt Instrument [Axis] Debt Instrument [Axis] Foreign currency forward contract 8 Foreign Currency Forward Contract 8 [Member] Foreign Currency Forward Contract 8 Fair Value Measurements Fair Value Disclosures [Text Block] Credit Facility [Domain] Credit Facility [Domain] Non-controlled non-affiliate/affiliate company investments Net change in unrealized (gain) loss on investments Debt and Equity Securities, Unrealized Gain (Loss) Net Assets Equity, Attributable to Parent [Abstract] 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] % of Net Assets Investment Owned, Net Assets, Percentage Entity Address, Address Line One Entity Address, Address Line One Debt Issuance Costs Deferred Charges, Policy [Policy Text Block] Investments [Domain] Investments [Domain] Base management fee, percentage Management and Service Fees, Base Rate Number of investments transferred from Level 3 to Level 1 Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Number Of Investments, Transfers Out Of Level 3 Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Number Of Investments, Transfers Out Of Level 3 Consideration received per transaction Sale of Stock, Consideration Received Per Transaction Financial Support for Nonconsolidated Legal Entity [Table] Financial Support for Nonconsolidated Legal Entity [Table] Derivative Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Incentive fee payable as a percentage of pre-incentive fee net investment income, if such income exceeds the specified hurdle rate in any calendar quarter, prior to an exchange listing Incentive Fee Payable As A Percentage Of Pre-Incentive Fee Net Investment Income, If Such Income Exceeds The Specified Hurdle Rate In Any Calendar Quarter, Prior To An Exchange Listing Incentive Fee Payable As A Percentage Of Pre-Incentive Fee Net Investment Income, If Such Income Exceeds The Specified Hurdle Rate In Any Calendar Quarter, Prior To An Exchange Listing Industry Sector [Axis] Industry Sector [Axis] Base management fees payable Management Fee Payable Investment income: Net Investment Income [Abstract] Foreign currency forward contract 9 Foreign Currency Forward Contract 9 [Member] Foreign Currency Forward Contract 9 Financial Highlights Investment Company, Financial Highlights [Text Block] Fair Value as of Grant Date Award Grant Date Fair Value Entity Registrant Name Entity Registrant Name Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] U.S. federal and state corporate-level income taxes, payables Accrued Income Taxes Environmental Industries Environmental Industries Represents the information pertaining to Environmental Industries Sector. Transactions with Related Parties Related Party Transaction [Line Items] Document Quarterly Report Document Quarterly Report Fair Value Total Debt Long-Term Debt, Fair Value Schedule of Valuation Techniques and Significant Unobservable Inputs Used in Recurring Level 3 Fair Value Measurements of Assets Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] Number of operating segments Number of Operating Segments Net accretion of discounts and amortization of premiums Accretion (Amortization) of Discounts and Premiums, Investments Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Schedule of SBA Debentures Outstanding Schedule of Debt [Table Text Block] Investment Owned, At Fair Value Investment Owned, At Fair Value [Member] Investment Owned, At Fair Value Investment Type [Axis] Investment Type [Axis] Related Party [Axis] Related and Nonrelated Parties [Axis] Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount 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] Interest and other debt financing expenses Total interest and other debt financing expenses Interest and Debt Expense Restatement Determination Date: Restatement Determination Date [Axis] Common Class D Common Class D [Member] Common Class D Non-PEO NEO Non-PEO NEO [Member] Sale of Stock [Axis] Sale of Stock [Axis] All Currencies [Domain] All Currencies [Domain] Notional Amount 
to be Sold Derivative Liability, Notional Amount Name Trading Arrangement, Individual Name Unfunded commitments Investment Company, Financial Support to Investee Contractually Required, Not Provided, Amount All Award Types Award Type [Domain] Equity Awards Adjustments Equity Awards Adjustments [Member] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Compensation Amount Outstanding Recovery Compensation Amount Aggregate Principal Amount Committed Debt Instrument, Face Amount Number of equity securities Number Of Equity Securities Number Of Equity Securities Foreign currency forward contract 23 Foreign Currency Forward Contract 23 [Member] Foreign Currency Forward Contract 23 Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] CONSOLIDATED SCHEDULE OF INVESTMENTS Schedule of Investments [Line Items] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Investment, Issuer Affiliation [Domain] Investment, Issuer Affiliation [Domain] Name Awards Close in Time to MNPI Disclosures, Individual Name CONSOLIDATED SCHEDULE OF INVESTMENTS (Foreign currency forward contracts) Open Forward Foreign Currency Contract [Line Items] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] MC Advisors MC Advisors [Member] MC Advisors Foreign currency forward contract 17 Foreign Currency Forward Contract 17 [Member] Foreign Currency Forward Contract 17 Notional Amount to be Sold Derivative, Notional Amount To Be Sold Notional or face amount of derivative to be sold. Common Class I Common Class I [Member] Common Class I Common shares outstanding, intend offer price, percentage Common Shares Outstanding, Intend Offer Price, Percentage Common Shares Outstanding, Intend Offer Price, Percentage Purchases of investments and other adjustments to cost Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Media: Advertising, Printing & Publishing Media: Advertising, Printing & Publishing [Member] Media: Advertising, Printing & Publishing Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Number of borrowers with loan or preferred equity securities Number Of Borrowers On With Loan Or Preferred Equity Securities Represents the number of borrowers on with loan or preferred equity securities. Net change in unrealized gain (loss) Unrealized Gain (Loss), Investment, Derivative, and Foreign Currency Transaction Price Change, Operating, before Tax Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Ratio/Supplemental data: Investment Company, Financial Ratios [Abstract] Minimum Minimum [Member] Company Selected Measure Name Company Selected Measure Name Australia, Dollars Australia, Dollars Revenue Recognition Revenue [Policy Text Block] Ratio of expenses to average net assets without waivers and expense support Investment Company, Expense Ratio before Incentive Allocation Operating expense ratio Operating Expense, Ratio Operating Expense, Ratio Borrowings Debt Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Portfolio turnover rate Investment Company, Portfolio Turnover Interest payable Interest Payable Company investments as percentage of total assets Investment Owned Percent Of Total Assets Represents information pertaining to company investments as percentage of total assets. Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Proceeds from principal payments and sale of investments and settlement of forward contracts Proceeds from Disposition of Investment, Operating Activity Non-qualifying assets as percentage of total assets Non-Qualifying Assets As Percentage Of Total Assets Non-qualifying assets represented as a percentage of total assets. Foreign currency forward contract 10 Foreign Currency Forward Contract 10 [Member] Foreign Currency Forward Contract 10 All Executive Categories All Executive Categories [Member] Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Common Shares, $0.01 par value, unlimited Common Shares authorized, 4,019,156 and 3,948,488 Class I shares issued and outstanding, respectively Common Stock, Value, Issued Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Foreign currency forward contracts asset (liability) Derivative Assets (Liabilities), at Fair Value, Net Weighted average common shares outstanding - diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Segment Reporting Segment Reporting, Policy [Policy Text Block] Commitments and contingencies (See Note 10) Commitments and Contingencies No Trading Symbol Flag No Trading Symbol Flag Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Foreign currency forward contract 12 Foreign Currency Forward Contract 12 [Member] Foreign Currency Forward Contract 12 Entity Small Business Entity Small Business Investments, measurement input Investment Company, Investment Owned, Measurement Input Restricted Cash and Cash Equivalent Item [Line Items] Restricted Cash and Cash Equivalent Item [Line Items] Ratio of total investment income to average net assets Investment Company, Investment Income (Loss) Ratio, after Incentive Allocation Distributions payable Distribution Payable Consumer Goods: Durable Consumer Goods Durable Sector [Member] Represents the information pertaining to Sector of the economy consisting of companies engaged in Consumer Goods: Durable. Document Transition Report Document Transition Report Investments Summary of Investment Holdings [Line Items] Schedule of Components of the Company's Investment Income Investment Income [Table Text Block] Facility Termination Event Rate 2 Facility Termination Event Rate 2 [Member] Facility Termination Event Rate 2 High Tech Industries High Tech Industries Sector [Member] Represents the information pertaining to Sector of the economy consisting of companies engaged in High Tech Industries. Underlying Securities Award Underlying Securities Amount Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Subsequent Events Subsequent Events, Policy [Policy Text Block] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Schedule of Investments [Table] Schedule of Investments [Table] Foreign currency forward contract 4 Foreign Currency Forward Contract 4 [Member] Foreign Currency Forward Contract 4 Investment Type Concentration Risk Investment Type Concentration Risk [Member] Investment Type Concentration Risk Balances at the beginning Balances at the end Equity, Including Portion Attributable to Noncontrolling Interest Shareholder distributions paid Investment Company, Payments of Dividend Distribution Amount of cash outflow to dividend distribution. Foreign currency forward contract 20 Foreign Currency Forward Contract 20 [Member] Foreign Currency Forward Contract 20 Foreign currency forward contract 15 Foreign Currency Forward Contract 15 [Member] Foreign Currency Forward Contract 15 Document Type Document Type Level 3 Fair Value, Inputs, Level 3 [Member] Name Outstanding Recovery, Individual Name Capital in excess of par value Additional Paid in Capital Derivative Contract [Domain] Derivative Contract [Domain] Proceeds from issuance of common shares Proceeds Proceeds from Issuance of Common Stock Net investment income per share - diluted (in dollars per share) Net Investment Income Per Share, Diluted Represents the net investment income per share, diluted. All Individuals All Individuals [Member] Payables for excise taxes Sales and Excise Tax Payable Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Name Forgone Recovery, Individual Name Shareholder distributions declared (in dollars per share) Investment Company, Distribution to Shareholders, Per Share Foreign currency forward contracts Net change in unrealized (gain) loss on foreign currency forward contracts Unrealized Gain
(Loss) Net change in unrealized gain (loss) on foreign currency forward contracts Unrealized Gain (Loss) on Derivatives Statistical Measurement [Axis] Statistical Measurement [Axis] 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] Commitment fee (in percent) Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Weighted average interest rate Debt, Weighted Average Interest Rate Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation [Abstract] Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation [Abstract] Consumer Goods: Non-Durable Consumer Sector, Non-Durable [Member] Consumer Sector, Non-Durable [Member] Banking Banking Sector 1 [Member] Banking Sector 1 Financial Support for Nonconsolidated Legal Entity [Line Items] Financial Support for Nonconsolidated Legal Entity [Line Items] Fair Value Measurements Fair Value Measurement Inputs and Valuation Techniques [Line Items] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Payable for unsettled trades Payable For Unsettled Trades Current And Non Current Carrying amount of the unpaid portion of the unsettled trades. Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Consumer Goods: Non-Durable Consumer Goods Non-Durable Sector [Member] Represents the information pertaining to Sector of the economy consisting of companies engaged in Consumer Goods: Non-Durable. Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Geographical [Axis] Geographical [Axis] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Level 1 Fair Value, Inputs, Level 1 [Member] Balances at the beginning (in shares) Balances at the end (in shares) Shares outstanding at end of period (in shares) Shares, Outstanding Chemicals, Plastics & Rubber Chemicals, Plastics & Rubber [Member] Chemicals, Plastics & Rubber Qualifying assets as percentage of total assets Qualifying Assets As Percentage Of Total Assets, Minimum Minimum qualifying assets represented as a percentage of Company's total assets. Foreign currency forward contract 2 Foreign Currency Forward Contract 2 [Member] Foreign Currency Forward Contract 2 Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] Net increase (decrease) in net assets resulting from operations per share - diluted (in dollars per share) Earnings Per Share, Diluted Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Interest income Interest Income, Operating Title of 12(b) Security Title of 12(b) Security Due to Adviser Due to Correspondent Brokers Accounts payable Accounts Payable Sale of stock (in shares) Sale of Stock, Number of Shares Issued in Transaction Dividends [Axis] Dividends [Axis] Per common share data: Earnings Per Share [Abstract] Net investment income Net investment income Investment Income, Operating, after Expense and Tax Ratio of net investment income to average net assets without waivers and expense support Investment Company, Investment Income (Loss) Ratio, before Incentive Allocation Leverage ratio Leverage Ratio Leverage Ratio Interest and dividend income Interest Income, Operating, Paid in Cash Administrative service fees Administrative Fees Expense Fair Value Measurements Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Income taxes, including excise taxes Investment Income, Operating, Tax Expense (Benefit) Award Timing Disclosures [Line Items] Debt Principal Amount Outstanding (2) Long-Term Debt, Gross NET ASSET VALUE PER SHARE Investment Company, Investment Income (Loss) from Operations, Per Share [Abstract] Spread Investment, Basis Spread, Variable Rate Net investment income, percentage Net Investment Income, Percentage Net Investment Income, Percentage Stock Issuances and Share Repurchase Program Equity [Text Block] Number of shares held (in shares) Investment Owned, Balance, Shares Net increase (decrease) in net assets resulting from operations Net increase (decrease) in net assets resulting from operations Net Income (Loss) Attributable to Parent Subsequent Event [Table] Subsequent Event [Table] Dividends [Domain] Dividends [Domain] Expiration Date Trading Arrangement Expiration Date EBITDA Market Yields Measurement Input, Probability EBITDA Market Yields [Member] Measurement input using EBITDA market yields. Net investment income (in dollars per share) Investment Company, Investment Income (Loss), Per Share, Basic Schedule of Information Related to Foreign Currency Forward Contracts Schedule of Foreign Exchange Contracts, Statement of Financial Position [Table Text Block] Pre-incentive fee net investment income returns Pre-Incentive Fee Net Investment Income Returns Pre-Incentive Fee Net Investment Income Returns Product Information [Line Items] Product Information [Line Items] PIK interest income Interest Income, Operating, Paid in Kind Restrictions on Cash and Cash Equivalents [Table] Restrictions on Cash and Cash Equivalents [Table] Investments Investments [Member] Geographic Concentration Risk Geographic Concentration Risk [Member] Adoption Date Trading Arrangement Adoption Date Applicable base rate Base Rate [Member] Price per share (in dollars per share) Price per share (in dollars per share) Shares Issued, Price Per Share Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Entity Current Reporting Status Entity Current Reporting Status Interest Rate Interest rate Investment Interest Rate Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Consolidated Entities [Domain] Consolidated Entities [Domain] Services: Business Services Business Sector [Member] Represents the information pertaining to Sector of the economy consisting of companies engaged in Services: Business. Accumulated undistributed (overdistributed) earnings Retained Earnings (Accumulated Deficit) Transportation: Cargo Transportation Sector [Member] Ratio of expenses to average net assets with waivers and expense support Investment Company, Expense Ratio, after Fee Waiver and Incentive Fee Deduction Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] 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] Executive Category: Executive Category [Axis] Foreign Exchange Forward Foreign Exchange Forward [Member] Telecommunications Telecommunications Represents the information pertaining to Telecommunications Sector. Repayments of debt Repayments of Debt Current Fiscal Year End Date Current Fiscal Year End Date Class of Stock [Axis] Class of Stock [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] 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] Net ordinary income of deferrals and elections (in percent) Net Ordinary Income Of Deferrals And Elections (In Percent) The percentage of net ordinary income of deferrals and elections. Professional fees Professional Fees Statement [Table] Statement [Table] Incentive fee payable as a percentage of pre-incentive fee net investment income, if such income does not exceed the hurdle rate in any calendar quarter Incentive Fee Payable As A Percentage Of Pre-Incentive Fee Net Investment Income, If Such Income Does Not Exceed The Hurdle Rate In Any Calendar Quarter Represents information pertaining to incentive fee payable as a percentage of pre-incentive fee net investment income, if such income does not exceed the hurdle rate in any calendar quarter. Net unrealized loss on foreign currency forward contracts Derivative Liability 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] Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Nondeductible U.S. federal excise tax Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Variable Rate [Domain] Variable Rate [Domain] Schedule of Fair Value Measurements of Investments and Foreign Currency Forward Contracts, by Major Class According to the Fair Value Hierarchy Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Organization and Principal Business Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Distributions payable Distributions Payable, Operating Activities Distributions Payable, Operating Activities Schedule of Reconciliation of the Beginning and Ending Balances for Investments at Fair Value that Use Level 3 Inputs Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Base management fees payable Increase (Decrease) in Management Fee Payable FIRE: Finance FIRE Finance Sector [Member] Represents the information pertaining to Sector of the economy consisting of companies engaged in FIRE: Finance. All Adjustments to Compensation All Adjustments to Compensation [Member] Amendment Flag Amendment Flag Common shares (in dollars per share) Sale of Stock, Price Per Share Payment-in-kind interest capitalized Interest Income, Operating, Paid In Kind, Capitalized, Operating Activities Interest Income, Operating, Paid In Kind, Capitalized, Operating Activities Termination Date Trading Arrangement Termination Date Net cash provided by (used in) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] Net assets at end of period Net Assets Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Dividends Payable [Table] Dividends Payable [Table] Weighted average common shares outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Per share data: Investment Company, Financial Highlights [Roll Forward] Interest and dividend receivable Dividend and Interest Receivable Related Party Transaction [Domain] Related Party Transaction [Domain] Subsequent Events [Abstract] Subsequent Events [Abstract] Segment Reporting [Abstract] Market yields Measurement Input, Probability Market Yields [Member] Measurement input using market yields. Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Amortization of debt issuance costs Amortization of debt issuance costs Amortization of Debt Issuance Costs Operating expenses before fee waivers and expense support Investment Income, Investment Expense Entity Tax Identification Number Entity Tax Identification Number Discounted cash flow Valuation Technique, Discounted Cash Flow [Member] Net expense (benefit) for U.S. federal excise tax Excise And Sales Taxes (Benefits) Excise And Sales Taxes (Benefits) Incentive fee waiver Investment Company, Incentive Fee, Contractual Fee Waived Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Consolidated Entities [Axis] Consolidated Entities [Axis] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, issued (in shares) Common Stock, Shares, Issued MC Advisors Monroe Capital BDC Advisors, LLC [Member] Represents the information pertaining to Monroe Capital BDC Advisors, LLC, a registered investment adviser under the Investment Advisers Act of 1940, who is managing our Company. Use of Estimates Use of Estimates, Policy [Policy Text Block] Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Northeast US Northeast Region [Member] Investment Portfolio By Industry Concentration Risk Investment Portfolio By Industry Concentration Risk [Member] Investment Portfolio By Industry Concentration Risk Subsequent Events Subsequent Events [Text Block] Insider Trading Arrangements [Line Items] Equity investments Equity investments Equity investments Equity Securities [Member] Total liabilities Liabilities Currency [Axis] Currency [Axis] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Common shares Common Stock, Value, Outstanding Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Stock repurchased (in shares) Stock Repurchased During Period, Shares Operating expenses: Operating Expenses [Abstract] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Enterprise value Valuation Technique Enterprise Value [Member] Valuation technique calculating enterprise value. Asset Class [Domain] Asset Class [Domain] Net change in unrealized gain (loss) on investments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Incentive fees payable Increase (Decrease) in Incentive Fee Payable Issuances of common shares - Class I Stock Issued During Period, Value, New Issues Statement Statement [Line Items] Variable Rate [Axis] Variable Rate [Axis] Unamortized Debt Issuance Costs Unamortized Debt Issuance Expense Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Counterparty Name [Axis] Counterparty Name [Axis] Subsequent Event Subsequent Event [Line Items] Total investment income Gross Investment Income, Operating Common Shares Common Stock [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Unamortized discounts and loan origination fees Debt Investments Unamortized Discounts And Loan Origination Fees Unamortized amount of discount and loan origination fees on debt investments, as of the balance sheet date.