CONSOLIDATED STATEMENT OF ASSETS AND LIABILITIES Statement [Table] Investment, Issuer Affiliation [Axis] Investment, Issuer Affiliation [Domain] Investment, Affiliated Issuer, Controlled [Member] Controlled investments Control investments Investment, Unaffiliated Issuer [Member] Non-controlled/Unaffiliated Non-control, non-affiliated investments Investment, Affiliated Issuer, Noncontrolled [Member] Non-controlled/affiliated Related Party [Axis] Related Party [Domain] Related Party [Member] Related party Nonrelated Party [Member] Nonrelated party Statement [Line Items] Statement Assets [Abstract] ASSETS Investment Owned, at Fair Value Investment Owned, Fair Value, Ending Balance Investment Owned, Fair Value, Beginning Balance Fair value of investments Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Receivable, Investment, Sale Receivable for sales and repayments of investments Dividend and Interest Receivable Interest receivable Income Taxes Receivable, Current Income tax receivable Other Receivables Other receivables Deferred Offering Costs Deferred offering costs Prepaid Expense Prepaid expenses Assets SBIC Assets Total Assets Liabilities [Abstract] LIABILITIES Notes Payable Notes Payable Notes Payable, net of deferred financing costs and discount Notes payable Long-Term Line of Credit Credit Facility payable Credit facility payable, net of prepaid loan structure fees Credit facility payable Amount of guaranteed debentures. Guaranteed Debentures SBA-guaranteed debentures Distribution Payable Dividends payable Management Fee Payable Management fees payable Amount of income incentive fees payable. Income Incentive Fee Payable Income incentive fees payable Interest Payable Interest payable Other Liabilities Related party payable Management fees Deferred Revenue Unearned revenue Amount payable for administrative services received. Administrative Service Fees Payable Administrative services payable Accrued Income Taxes Income tax payable Other Accounts Payable and Accrued Liabilities Other accrued expenses and liabilities Liabilities Total Liabilities Commitments and Contingencies. Commitments and contingencies (Note 7) Stockholders' Equity Attributable to Parent Net Assets Stockholders' Equity Attributable to Parent [Abstract] NET ASSETS Common Stock, Value, Issued Common stock, par value $0.001 per share (100,000,000 shares authorized; 28,947,254 and 27,481,118 shares issued and outstanding, respectively) Additional Paid in Capital Paid-in capital Retained Earnings (Accumulated Deficit) Total distributable loss Total distributable loss Liabilities and Equity Total Liabilities and Net Assets Net asset value at end of period Net asset value at beginning of period Net Asset Value Per Share Investment Owned, at Cost Investments, amortized cost Aggregate cost of portfolio company securities Common Stock, Par or Stated Value Per Share Common stock, par value Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Ending balance (shares) Beginning balance (shares) Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding CONSOLIDATED STATEMENTS OF OPERATIONS Revenues [Abstract] INVESTMENT INCOME Interest Income, Operating, Paid in Cash Interest income Interest Income, Operating, Paid-in-Kind PIK income Payment-in-kind interest income Other Income Other income Gross Investment Income, Operating Total Investment Income Operating Expenses [Abstract] OPERATING EXPENSES Management Fee Expense Management fees Fees incurred during the period for valuation services. Valuation Fee Expense Valuation fees General and Administrative Expense Administrative services expenses Fees incurred (reversed) during the period for income incentives. Income Incentive Expense Income incentive fees Professional Fees Professional fees Fees incurred during the period for directors' services. Directors Fees Directors' fees General Insurance Expense Insurance expense Interest Expense, Operating Interest expense and other fees Income Tax Expense (Benefit) Income tax expense Other Selling, General and Administrative Expense Other general and administrative expenses Operating Expenses Total Operating Expenses Investment Company, Voluntary Fee Waived Income incentive fee waiver Income incentive fees waived Investment Company, Expense, after Reduction of Fee Waiver and Reimbursement Total Operating Expenses, net of fee waivers Net Investment Income Net Investment Income Realized Investment Gains (Losses) Net realized gain (loss) on investments Foreign Currency Transaction Gain (Loss), Realized Net realized gain (loss) on foreign currency translations Unrealized Gain (Loss) on Investments Net change in unrealized appreciation (depreciation) on investments Net change in unrealized (depreciation) appreciation on investments Foreign Currency Transaction Gain (Loss), Unrealized, Excluding Investment Price Change, before Tax Net change in unrealized appreciation (depreciation) on foreign currency translations Net Increase in Net Assets Resulting from Operations Net increase in net assets resulting from operations The amount of net investment income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Net Investment Income Per Share, Basic Net Investment Income Per Share - basic The amount of net investment income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Net Investment Income Per Share, Diluted Net Investment Income Per Share - diluted Earnings Per Share, Basic Net Increase in Net Assets Resulting from Operations Per Share Basic (in dollars per share) Net increase in net assets resulting from operations per common share, Basic (in dollars per share) Earnings Per Share, Diluted Net Increase in Net Assets Resulting from Operations Per Share Diluted (in dollars per share) Net increase in net assets resulting from operations per common share, Diluted (in dollars per share) Weighted Average Number of Shares Outstanding, Basic Weighted Average Shares of Common Stock Outstanding Basic Weighted average common shares, Basic (in shares) Weighted Average Number of Shares Outstanding, Diluted Weighted Average Shares of Common Stock Outstanding Diluted Weighted average common shares, Diluted (in shares) Common Stock, Dividends, Per Share, Cash Paid Distributions Per Share-basic and diluted CONSOLIDATED STATEMENTS OF CHANGES IN NET ASSETS Investment Company, Changes in Net Assets [Table] Equity Components [Axis] Equity Component [Domain] Common Stock [Member] Common Stock Additional Paid-in Capital [Member] Paid-in capital Retained Earnings [Member] Total distributable (loss) Investment Company, Changes in Net Assets [Line Items] Investment Company, Changes in Net Assets Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Ending balance Beginning balance Investment Income, Operating, after Expense and Tax Net investment income Realized Gain (Loss), Investment and Derivative, Operating, after Tax Net realized gain (loss) on investments Foreign Currency Transaction Gain (Loss), Realized, after Tax Net realized loss on foreign currency translations Foreign Currency Transaction Gain (Loss), Unrealized, after Tax Net change in unrealized appreciation (depreciation) on foreign currency translations Investment Company, Dividend Distribution Distributions from net investment income Stock Issued During Period, Value, New Issues Issuance of common stock, net of offering costs Aggregate offering price Stock Issued During Period, Shares, New Issues Issuance of common stock, net of offering costs (shares) Number of Shares CONSOLIDATED STATEMENTS OF CASH FLOWS Net Cash Provided by (Used in) Operating Activities [Abstract] Cash Flows from Operating Activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net increase in net assets from operations to net cash used in operating activities: Payments for Purchase of Investment, Operating Activity Purchases of investments Proceeds from Disposition of Investment, Operating Activity Proceeds from sales and repayments of investments Non-cash amount of unrealized gain (loss) on investment in debt and equity securities. Non-Cash Debt And Equity Securities, Unrealized Gain (Loss) Net change in unrealized depreciation (appreciation) on investments Amount of decrease (increase), before tax, of foreign currency transaction unrealized gain (loss) excluding foreign currency transaction unrealized gain (loss) on investment and derivative from change in market price. Investment includes, but is not limited to, debt and equity securities, security sold short, real estate, and commodity. Decrease (Increase) In Foreign Currency Transaction Gain Loss Unrealized Excluding Investment Price Change Before Tax Net change in unrealized depreciation (appreciation) on foreign currency translations Increase (Decrease) in Receivable for Investment Sold Increase in investments due to payment-in-kind income Investment Income, Net, Amortization of Discount and Premium Amortization of premium and accretion of discount, net Amortization of premium and accretion of discount, net Amortization of loan structure fees. Amortization Of Loan Structure Fees Amortization of loan structure fees Amortization of Debt Issuance Costs Amortization of deferred financing costs Amortization of Debt Discount (Premium) Amortization of discount on Notes Payable Amount of noncash expense included in interest expense to amortize debt premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. Amortization of Debt Premium Amortization of premium on Notes Payable Premium amortization Amortization of financing costs on guaranteed debt. Amortization Of Financing Costs Guaranteed Debt Amortization of loan fees on SBA-guaranteed debentures Net realized losses (gains) on investments, cash flow statement impact. Net Realized Gains Losses On Investments, Cash Flow Impacts Net realized (gain) loss on investments Increase (Decrease) in Operating Capital [Abstract] Changes in other assets and liabilities Increase (Decrease) in Accrued Interest Receivable, Net Increase in interest receivable Increase (Decrease) in Income Taxes Receivable Decrease (increase) in income tax receivable Increase (Decrease) in Other Receivables Increase in other receivables Increase (Decrease) in Due from Related Parties Decrease in related party receivables Increase (Decrease) in Prepaid Expense (Increase) decrease in prepaid expenses Increase (decrease) in management fees payable. Increase Decrease In Management Fees Payable (Decrease) increase in management fees payable Increase (decrease) in income incentive fees payable. Increase Decrease In Income Incentive Fees Payable Increase (decrease) in income incentive fees payable Increase (Decrease) in Other Employee-Related Liabilities Increase (decrease) in administrative services payable Increase (Decrease) in Interest Payable, Net Decrease in interest payable Increase (Decrease) in Due to Related Parties Increase in related party payable Increase (Decrease) in Deferred Revenue (Decrease) increase in unearned revenue Increase (Decrease) in Income Taxes Payable Increase in income tax payable Increase (Decrease) in Other Accrued Liabilities Increase in other accrued expenses and liabilities Net Cash Provided by (Used in) Operating Activities Net Cash Provided by (Used in) Operating Activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash Flows from Financing Activities Proceeds from Issuance of Common Stock Proceeds from the issuance of common stock Payments of sales load for stock issuances. Payments Of Common Stock Sales Loads Sales load for common stock issued Payments of Stock Issuance Costs Offering costs paid for common stock issued Underwriting and other expenses Payments of Dividends Stockholder distributions paid Payments of Debt Issuance Costs Financing costs paid on Notes Payable Repayments of Long-Term Debt Repayments of SBA-guaranteed debentures Proceeds from Lines of Credit Borrowings under Credit Facility Repayments of Lines of Credit Repayments of Credit Facility Repayments of Credit Facility Net Cash Provided by (Used in) Financing Activities Net Cash (Used in) Provided by Financing Activities Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net Decrease in Cash and Cash Equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations Cash and Cash Equivalents Balance at End of Period Cash and Cash Equivalents Balance at Beginning of Period Supplemental Cash Flow Information [Abstract] Supplemental and Non-Cash Activities Interest Paid, Excluding Capitalized Interest, Operating Activities Cash paid for interest expense Income Taxes Paid, Net Income and excise tax refund, net Amount of gain loss on exchange of investment in non-cash investing and financing activity. Gain Loss on Exchange of Investments Exchange of investments CONSOLIDATED SCHEDULE OF INVESTMENTS Schedule of Investments [Table] Investment, Identifier [Axis] Investment, Issuer Name [Axis] Investment, Issuer Name [Domain] EH Real Estate Services, LLC [Member] EH Real Estate Services, LLC [Member] EH Real Estate Services, LLC Represents information pertaining to 2X LLC. 2X LLC [Member] 2X LLC Fidus Systems Inc [Member] Fidus Systems Inc [Member] Fidus Systems Inc Fidus Systems Inc Delayed Draw Term Loan [Member] Fidus Systems Inc Delayed Draw Term Loan [Member] Fidus Systems Inc Delayed Draw Term Loan Ad.Net Acquisition, LLC [Member] Ad.Net Acquisition, LLC [Member] Ad.Net Acquisition, LLC The member stands for AdCellerant LLC. AdCellerant LLC [Member] AdCellerant LLC ADS Group Opco, LLC [Member] ADS Group Opco, LLC [Member] ADS Group Opco, LLC American Refrigeration, LLC [Member] American Refrigeration, LLC [Member] American Refrigeration, LLC Advanced Barrier Extrusions, LLC [Member] Advanced Barrier Extrusions, LLC [Member] Advanced Barrier Extrusions, LLC AGT Robotique Inc. AGT Robotique Inc. The member stands for AMII Acquisition, LLC. AMII Acquisition LLC [Member] AMII Acquisition, LLC The member stands for Amika OpCo LLC. Amika OpCo LLC [Member] Amika OpCo LLC Anne Lewis Strategies, LLC [Member] Anne Lewis Strategies, LLC [Member] Anne Lewis Strategies, LLC APE Holdings, LLC [Member] APE Holdings, LLC [Member] APE Holdings, LLC ArborWorks, LLC[Member] ArborWorks, LLC [Member] ArborWorks, LLC Atmosphere Aggregator Holdings II, L.P. [Member] Atmosphere Aggregator Holdings II, L.P. [Member] Atmosphere Aggregator Holdings II, L.P. Arctiq, Inc. [Member] Arctiq, Inc. [Member] Arctiq, Inc. Axis Portable Air, LLC [Member] Axis Portable Air, LLC [Member] Axis Portable Air, LLC Represents information pertaining Baker Manufacturing Company, LLC. Baker Manufacturing Company, Llc [Member] Baker Manufacturing Company, LLC Represents information pertaining Bart And Associates, LLC. Bart And Associates, LLC [Member] Bart & Associates, LLC BL Products Parent, L.P. [Member] BL Products Parent, L.P. [Member] BL Products Parent, L.P. Cafe Valley, Inc. [Member] Cafe Valley, Inc. [Member] Cafe Valley, Inc. Camp Profiles LLC [Member] Camp Profiles LLC [Member] Camp Profiles LLC Represents the information pertaining to Carolinas Buyer, Inc. Carolinas Buyer, Inc. [Member] Carolinas Buyer, Inc. CEATI International Inc. [Member] CEATI International Inc. [Member] CEATI International Inc. Cerebro Buyer, LLC [Member] Cerebro Buyer, LLC [Member] Cerebro Buyer, LLC CF Arch Holdings LLC [Member] CF Arch Holdings LLC [Member] CF Arch Holdings LLC CF512, Inc. [Member] CF512, Inc. [Member] CF512, Inc. Represents information pertaining to Champion Services Acquireco LLC. Champion Services Acquireco LLC [Member] Champion Services Acquireco LLC Channel Partners Intermediateco, LLC [Member] Channel Partners Intermediateco, LLC [Member] Channel Partners Intermediateco, LLC CompleteCase, LLC [Member] CompleteCase, LLC [Member] CompleteCase, LLC Compost 360 Acquisition, LLC [Member] Compost 360 Acquisition, LLC [Member] Compost 360 Acquisition, LLC COPILOT Provider Support Services, LLC [Member] COPILOT Provider Support Services, LLC Represents information pertaining to Craftable Intermediate II Inc. Craftable Intermediate II Inc Curion Holdings, LLC [Member] Curion Holdings, LLC [Member] Curion Holdings, LLC Represents information pertaining to DFO Enterprises, LLC. DFO Enterprises, LLC [Member] DFO Enterprises, LLC Represents the information pertaining to DMD Systems Recovery, LLC. DMD Systems Recovery, LLC [Member] DMD Systems Recovery, LLC Represents the information pertaining to Elder Care Opco LLC. Elder Care Opco LLC [Member] Elder Care Opco LLC DTE Holding Company, LLC [Member] DTE Holding Company, LLC [Member] DTE Holding Company, LLC Environmental Remedies, LLC [Member] Environmental Remedies, LLC [Member] Environmental Remedies, LLC Environmental Remedies, LLC Delayed Draw Term Loan [Member] Environmental Remedies, LLC Delayed Draw Term Loan [Member] Environmental Remedies, LLC Delayed Draw Term Loan Elliott Aviation, LLC [Member] Elliott Aviation, LLC [Member] Elliott Aviation, LLC Eskola LLC. Eskola LLC [Member] Eskola LLC Represents information pertaining to Equine Network, LLC. Equine Network, LLC [Member] Equine Network, LLC evolv Consulting, LLC [Member] evolv Consulting, LLC [Member] evolv Consulting, LLC Evriholder Acquisition, Inc. [Member]. Evriholder Acquisition, Inc. [Member] Evriholder Acquisition, Inc. Exacta Land Surveyors, LLC [Member] Exacta Land Surveyors, LLC [Member] Exacta Land Surveyors, LLC Exigo, LLC [Member] Exigo, LLC [Member] Exigo, LLC