Issuance date eleven. Issuance Date Eleven [Member] January 14, 2019 Entity Address, City or Town Stock repurchase program, authorized amount Stock Repurchased During Period Value Stock repurchased during period, value Mingle healthcare solutions, inc. Mingle Healthcare Solutions Inc [Member] Mingle Healthcare Solutions Inc Fair Value Disclosures [Abstract] Earnings Per Share [Abstract] Fair Value Inputs Level1 [Member] Level 1 Payment in-kind interest Paid-in-Kind Interest Percentage of incentive fee hurdle rate Percentage Of Incentive Fee Hurdle Rate Percentage of incentive fee hurdle rate. Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases Purchases of investments Mid-western United States. Mid Western United States [Member] Midwestern United States Issuance of common stock, value Stock Issued During Period Value New Issues Overhead allocation expense. Overhead Allocation Expense Overhead allocation expense Net Cash Provided By Used In Financing Activities [Abstract] Cash flows from financing activities Accrued Investment Income Receivable Accrued interest receivable Write off accrued and uncollected paid in kind interest Write Off Accrued And Uncollected Paid In Kind Interest Write off accrued and uncollected paid in kind interest. EBR Systems, Inc. E B R Systems Incorporation [Member] EBR Systems Incorporation. Russian Invasion Of Ukraine Impact On Portfolio [Member] Russian Invasion Of Ukraine Impact On Portfolio. Credit facilities, net Carrying Value Long-Term Line of Credit, Total Line Of Credit R. David Spreng R. David Spreng [Member] R. David Spreng. Market value of collateral at least equal to repurchase price in case of reverse repurchase agreement percentage. Market Value Of Collateral At Least Equal To Repurchase Price In Case Of Reverse Repurchase Agreement Percentage Market value of collateral at least equal to repurchase price in case of reverse repurchase agreement, percentage Amendment Flag Investment fund Investment Owned At Cost Investment cost Fair value assets transfer out of level 2 into level 1 amount. Fair Value Assets Transfer Out Of Level2 Into Level1 Amount Asset transfer out of level 2 into level 1 fair value Securities For Reverse Repurchase Agreements Outstanding reverse repurchase agreements Debt Instrument Second and Final Issuance Closed on February 10, 2022 Debt Instrument Second and Final Issuance Closed on February Ten Two Thousand Twenty Two [Member] Debt Instrument Second and Final Issuance Closed on February Ten Two Thousand Twenty Two. Subsequent Event Type [Domain] Subsequent Event Type Derivative financial instruments net change in unrealized investment of warrants. Derivative Financial Instruments Net Change In Unrealized Investment Of Warrants Net change in unrealized investment of warrants Weighted average effective interest rate Line Of Credit Facility Interest Rate During Period Asset coverage ratio Carrying value Short-Term Debt, Total Extinguishment of Debt [Axis] Common stock warrant one. Common Stock Warrant One [Member] Common Stock Warrant One Payments of deferred offering costs Payments of deferred offering costs Payments of Deferred Offering Costs Payments of Deferred Offering Costs Unfunded loan commitments Total unused commitments to extend financing Investment Company, Financial Commitment to Investee, Future Amount Document Quarterly Report Debt Instrument [Table] Debt Instrument [Table] Acquisition of treasury shares Payments for Repurchase of Common Stock Market value of collateral at least equal to repurchase price in case of other reverse repurchase agreements percentage. Market Value Of Collateral At Least Equal To Repurchase Price In Case Of Other Reverse Repurchase Agreements Percentage Market value of collateral at least equal to repurchase price in case of other reverse repurchase agreements percentage Earnings Per Share Policy [Text Block] Per Share Information Scale Computing, Inc. Scale computing, incorporation. Scale Computing Incorporation [Member] Success fee. Success Fee [Member] Success Fee Statement [Table] Statement [Table] Increase (decrease) in accrued incentive fees. Increase Decrease In Accrued Incentive Fees Accrued incentive fees Investment owned acquisition date. Investment Owned Acquisition Date Acquisition Date Issuance date twenty eight. Issuance Date Twenty Eight [Member] March 24, 2021 London Interbank Offered Rate L I B O R [Member] LIBOR Second private offering. Second Private Offering [Member] Second Private Offering US Prime Rate U.S. Prime rate. U S Prime Rate [Member] Electronic equipment and instruments. Electronic Equipment And Instruments [Member] Electronic Equipment & Instruments Percentage of non-cash PIK interest Percentage Of Net Assets On Non Cash Paid In Kind Interest Percentage of net assets on non cash paid in kind interest. Investment owned maturity date. Investment Owned Maturity Date Due date Dividends paid to shareholders Payments of Dividends, Total Payments Of Dividends Dividends paid to stockholders Line Of Credit Facility Maximum Amount Outstanding During Period Aggregate commitment amount Non control and non affiliate investments. Non Control And Non Affiliate Investments [Member] Non-Control/Non-Affiliate Investments Series 1 Preferred Stock Series 1 preferred stock. Series1 Preferred Stock [Member] Minimum percentage of voting securities in investment portfolio. Minimum Percentage Of Voting Securities In Investment Portfolio Minimum percentage of voting securities Offering cost excluding placement agent fees. Offering Cost Excluding Placement Agent Fees Offering cost excluding placement agent fees Issuance date six. Issuance Date Six [Member] December 22, 2017 Data Processing And Outsourced Services Two Data processing and outsourced services two. Internet Software and Services Tranche II Non Qualifying Assets at Fair Value Non-qualifying assets at fair value Non Qualifying Assets At Fair Value [Member] Acquisition of treasury shares. Acquisition Of Treasury Shares Acquisition of treasury shares Acquisition of treasury shares Accretion (dilution) Investment Company Accretion Dilution Investment company accretion (dilution). July 2027 Notes. July 2027 Notes July Two Thousand Twenty Seven Notes [Member] Measurement Input Discount Rate [Member] Discount Rate Entity Incorporation, State or Country Code Income Statement [Abstract] Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block] Organization Warrant for Series D-1 Preferred Stock Series D One Preferred Stock Warrant [Member] Series D One Preferred Stock Warrant. Health care equipment. Health Care Equipment [Member] Health Care Equipment Sale Of Stock Name Of Transaction [Domain] Sale of Stock Percentage of incentive fee annual hurdle rate Percentage Of Incentive Fee Annual Hurdle Rate Percentage of incentive fee annual hurdle rate. Investment income attributable to non-cash paid in kind interest and dividend income. Investment Income Attributable To Noncash Paid In Kind Interest And Dividend Income Total investment income attributable to noncash paid in kind interest and dividend income Common stock issuance date. Common Stock Issuance Date Issuance Date Measurement input origination yield. Measurement Input Origination Yield [Member] Origination Yield Quantum Corporation Quantum Corporation [Member] Quantum Corporation System software. System Software [Member] System Software Capital commitments. Capital Commitments Capital commitments Capital Share Activity. Capital Share Activity [Abstract] Capital share activity Series C preferred stock warrant. Series C Preferred Stock Warrant [Member] Warrant for Series C Preferred Stock Interest Expense Total Interest Expense and Fees Interest Expense Intellisite Holdings, Incorporation. Intellisite Holdings Incorporation [Member] Intellisite Holdings, Inc. (dba Epic IO Technologies, Inc.) Weighted Average Cost of Debt Weighted Average Cost of Debt Weighted average cost of debt. Percentage of annual base management fee Percentage Of Annual Base Management Fee Percentage of annual base management fee. Income Tax Policy [Text Block] Income Taxes Percentage of non-affiliate investments. Percentage Of Non Affiliate Investments Percentage of non-affiliate investments Investment Interest ETP Investment Interest End of Term Payments Rate Investment interest end of term payments rate. Issuance date seven. Issuance Date Seven [Member] May 31, 2018 Debt securities held to maturity accrual interest payable. Debt Securities Held To Maturity Accrual Interest Payable Loan not been on non-accrual status, payable, Tranche VII Debt tranche seven. Debt Tranche Seven [Member] Equity Method Investee Name [Domain] Investment, Name Human resource and employment services. Human Resource And Employment Services [Member] Human Resource & Employment Services Variable Rate [Axis] Variable Rate Investment Secondary Categorization [Axis] Investment Secondary Categorization Entity Small Business Scenario plan three. Scenario Plan Three [Member] Scenario Plan Three Common stock warrant three. Common Stock Warrant Three [Member] Common Stock Warrant Three Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Table] Cash flows related to unfunded commitments and determined fair value. Cash Flows Related To Unfunded Commitments And Determined Fair Value Cash flows related to unfunded commitments and determined fair value Investment Type Categorization [Member] Investments Reverse repurchase agreement. Reverse Repurchase Agreement Policy [Text Block] Reverse Repurchase Agreement Control investments. Control Investments [Member] Control Investments Issuance date five. Issuance Date Five [Member] September 12, 2017 Brivo Systems, LLC Brivo Systems, LLC [Member] Brivo Systems, LLC. Amortization of deferred debt costs Amortization of Deferred Debt Costs Amortization of deferred debt costs. Repayments of reverse repurchase agreements. Repayments Of Reverse Repurchase Agreements Repayments of reverse repurchase agreements Weighted average shares outstanding, Basic Weighted Average Number of Shares Outstanding, Basic, Total Weighted Average Number Of Shares Outstanding Basic Basic Principal Amount Unused Facility and Other Fees Debt financing fees Debt Related Commitment Fees and Debt Issuance Costs City Area Code Incremental Common Shares Attributable To Conversion Of Debt Securities Potentially dilutive securities outstanding Dividends Investment Company, Distribution to Shareholders, Per Share Earnout. Earnout [Member] Earnout Administrative fee Administrative Fees Expense Administrative fees Organization and offering costs. Organization And Offering Costs Organization and offering costs Unused commitment fees percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Investment Company [Abstract] Liabilities Total liabilities Private Placement [Member] Private Placement Tax Basis Of Investments Gross Unrealized Depreciation Unrealized depreciation Document Period End Date Portfolio Investments. Portfolio Investments [Member] Portfolio Investments Amended and restated advisory agreement. Amended And Restated Advisory Agreement [Member] First Amended and Restated Advisory Agreement Accrued incentive fees payable in cash. Accrued Incentive Fees Payable In Cash Accrued incentive fees payable in cash Marley Spoon AG. Marley Spoon A G [Member] Marley Spoon A G Assets Sold Under Agreements To Repurchase Repurchase Liability Repurchase liability Investment interest floor rate. Investment Interest Floor Rate Investment Floor Rate Issuance date four. Issuance Date Four [Member] June 26, 2017 Portfolio turnover rate Investment Company, Portfolio Turnover Risks And Uncertainties [Abstract] Real Wear, Inc. RealWear, Incorporation. Real Wear Incorporation [Member] Dividend declared date Dividends Payable, Date Declared Range [Axis] Statistical Measurement Percentage of net assets at fair, restricted to resale Percentage of Net Assets at Fair Value Restricted to Resale Percentage of net assets at fair value restricted to resale. Investment transactions and related investment income. Investment Transactions And Related Investment Income Policy [Text Block] Investment Transactions and Related Investment Income From controlled Investments Controlled Affiliated Investments [Member] Controlled affiliated investments. Treasury bill. Treasury Bill [Member] Treasury Bill Subsequent Event [Line Items] Subsequent Event [Line Items] Related Party Transactions By Related Party [Axis] Related Party Assets Gross assets Total assets Derivative Contract Type [Domain] Derivative Contract GERMANY Germany Mojix Inc and Pivot3 Holdings, Inc. Mojix Inc and Pivot3 Holdings Inc [Member] Mojix Inc and Pivot3 Holdings Inc. Gross Proceeds Gross Proceeds from Issuance of Common Stock Gross proceeds from issuance of common stock. Interactions Corporation Interactions Corporation [Member] Interactions Corporation. Net investment income per common share, Diluted Earnings Per Share, Diluted, Total Earnings Per Share Diluted Diluted Realized gain (loss) Investment Company, Gain (Loss) on Investment, Per Share Tax Basis Of Investments Gross Unrealized Appreciation Unrealized appreciation Non-cash dividend reinvestments. Non Cash Dividend Reinvestments Non-cash dividend reinvestments Three DNA Corporation. Three D N A Corporation [Member] 3DNA Corp. (dba NationBuilder) Dividends, Total Dividends Dividends declared Debt Securities Held To Maturity Nonaccrual Aggregate principal funded on non-accrual status Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items] Entity Address, Postal Zip Code INRIX, Incorporation. I N R I X Incorporation [Member] INRIX, Inc. CrossRoads Extremity Systems, Limited Liability Company. Cross Roads Extremity Systems Limited Liability Company [Member] CrossRoads Extremity Systems, LLC Document Fiscal Period Focus Debt weighted average amount outstanding. Debt Weighted Average Amount Outstanding Weighted average outstanding debt balance 2026 Notes. 2026 Notes Proceeds from 2026 Notes Two Thousand Twenty Six Notes [Member] Investment Income Interest Interest income Brilliant Earth Group, Inc Brilliant Earth Group Incorporation [Member] Brilliant Earth Group, Inc. Net cash provided by (used in) financing activities Net Cash Provided By Used In Financing Activities Net cash provided by (used in) financing activities Specialized consumer services. Specialized Consumer Services [Member] Specialized Consumer Services TRACON Pharmaceuticals, Inc. T R A C O N Pharmaceuticals Incorporation [Member] TRACON Pharmaceuticals Incorporation. Short-Term Debt, Type [Axis] Issuance date twenty six. Issuance Date Twenty Six [Member] November 12, 2020 Investment Owned, at Fair Value Investment Owned, at Fair Value, Ending Balance Investment Owned, at Fair Value, Beginning Balance Investment Owned At Fair Value Total investments at fair value Total distributions to stockholders Total distributions to stockholders Investment Company, Dividend Distribution, Total Investment Company Dividend Distribution Total distributions to stockholders Statement Of Financial Position [Abstract] Snagajob.com, Incorporation. Snagajob Com Incorporation [Member] Snagajob.com, Inc. Scenario plan seven. Scenario Plan Seven [Member] Scenario Plan Seven Entity File Number Investment Company Financial Highlights Table [Text Block] Schedule of Financial Highlights Percentage of minimum cumulative net investments realized capital gain Loss. Percentage Of Minimum Cumulative Net Investments Realized Capital Gain Loss Percentage of minimum cumulative net investments realized capital gain loss Debt Securities, Available-for-Sale, Valuation Technique [Extensible Enumeration] Scenario Unspecified [Domain] Scenario Prepaid expenses Increase (Decrease) in Prepaid Expense Reinvestment of dividends, Shares Stock Issued During Period Shares Dividend Reinvestment Plan Stock issued during period, shares, dividend reinvestment plan Statement Of Cash Flows [Abstract] August 2027 Notes. August 2027 Notes August Two Thousand Twenty Seven Notes [Member] Valuation Technique [Domain] Valuation Approach and Technique Capital gains fee. Capital Gains Fee Capital gains fee Sales or repayments of investments Proceeds from Disposition of Investment, Operating Activity Commitments available under facility Line of Credit Facility, Current Borrowing Capacity Investment Company Capital Share Transactions [Abstract] Capital share transactions Property and Casualty Insurance Property and Casualty Insurance [Member] Property and casualty insurance. Segment Geographical [Domain] Geographical Schedule Of Earnings Per Share Basic By Common Class [Text Block] Computation of Basic Income Per Common Share Range [Member] Statistical Measurement Subsidiary Sale Of Stock [Axis] Sale of Stock Unused Facility and Other Fees Amortization of Debt Discount (Premium) Class Of Stock [Domain] Class of Stock Series B-1 Preferred Stock Warrant Series B-1 Preferred Stock Warrant. Series B One Preferred Stock Warrant [Member] Issuance date seventeen. Issuance Date Seventeen [Member] October 15, 2019 Warrant for Series A-2 Preferred Stock Warrant for Series A Two Preferred Stock [Member] Warrant for Series A Two Preferred Stock. Incentive Fee Expense Incentive fees Investment company return from investment operations. Investment Company Return From Investment Operations Return from investment operations Directors' fees Directors Fees Directors fees. Equity Method Investment Ownership Percentage Investment, ownership percentage Subsequent Events [Abstract] Fair Value Disclosures [Text Block] Fair Value Measurements Organization and offering costs. Organization And Offering Costs Policy [Text Block] Organization and Offering Costs Proceeds from common stock issued Proceeds From Issuance Of Common Stock Net cash received from common stock issued Administrator reimbursement. Administrator Reimbursement Administrator reimbursement Longterm Debt Type [Axis] Long-Term Debt, Type Percentage of incentive fee quarterly hurdle rate Percentage Of Incentive Fee Quarterly Hurdle Rate Percentage of incentive fee quarterly hurdle rate. Debt Instrument Initial Issuance Closed on December 10, 2021 Debt Instrument Initial Issuance Closed on December Ten Two Thousand Twenty One [Member] Debt Instrument Initial Issuance Closed on December Ten Two Thousand Twenty One. Scenario plan two. Scenario Plan Two [Member] Scenario Plan Two Offering costs Adjustments to Additional Paid in Capital Stock Issued Issuance (Costs) Benefits Adjustments to additional paid in capital stock issued issuance (costs) benefits. Series B preferred stock warrant. Series B Preferred Stock Warrant [Member] Warrant for Series B Preferred Stock Percentage of pre-incentive fee net investment income Percentage Of Pre Incentive Fee Net Investment Income Percentage of pre-incentive fee net investment income. Net Change in Unrealized Appreciation (Depreciation) Investment Owned, Unrecognized Unrealized Appreciation (Depreciation), Net Investment Owned, Unrecognized Unrealized Appreciation (Depreciation), Net, Total Investment Company Total Return Total return based on net asset value Line Of Credit Facility Maximum Borrowing Capacity Maximum aggregate principal amount Valuation Technique Discounted Cash Flow [Member] Discounted Cash Flow Analysis Debt securities held to maturity percentage of net assets nonaccrual. Debt Securities Held To Maturity Percentage Of Net Assets Nonaccrual Percentage of net assets on non-accrual status Principal/ Shares Investment Owned Balance Shares Repayments of reverse repurchase agreements Payments for Securities Purchased under Agreements to Resell Investment Income Net [Abstract] Investment income Ratio of net operating expenses to average net assets Investment Company, Expense Ratio Including Incentive Fee Credit Facility [Domain] Credit Facility Tax Basis Of Investments Unrealized Appreciation Depreciation Net Net unrealized appreciation/(depreciation) from investments Subsequent Events [Text Block] Subsequent Events Weighted average shares outstanding, Diluted Weighted Average Number of Shares Outstanding, Diluted, Total Weighted Average Number Of Diluted Shares Outstanding Diluted General Insurance Expense Insurance expense Notes, net Carrying Value Unsecured Debt Unsecured Debt, Total Credit Facility [Axis] Credit Facility Minimum percentage of voting securities in investment portfolio. Maximum Percentage Of Voting Securities In Investment Portfolio Affiliate investments, percentage of voting interests acquired Brilliant Earth, LLC. Brilliant Earth L L C [Member] Brilliant Earth, LLC Issuance date thirty one. Issuance Date Thirty One [Member] September 29, 2021 Increase Decrease In Due To Affiliates Due to affiliate Coginiti Corp. Coginiti Corp [Member] Coginiti Corp Other Expenses Other expenses Schedule Of Investments [Line Items] Schedule Of Investments [Line Items] Current Fiscal Year End Date Investment Type [Axis] Investment Type Interest Payable Current And Noncurrent Interest payable Equity Securities By Industry [Axis] Industry Sector Derivative Instruments And Hedging Activities Disclosure [Abstract] Data processing and outsourced services. Data Processing And Outsourced Services [Member] Data Processing & Outsourced Services Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period Stock repurchase program, number of shares authorized to be repurchased Stock Repurchased During Period Shares Components of interest expense and related fees. Components Of Interest Expense And Related Fees Table [Text Block] Components of Interest Expense and Related Fees Entity Address, Address Line One zSpace, Incorporation. Z Space Incorporation [Member] zSpace, Incorporation Issuance date fourteen. Issuance Date Fourteen [Member] May 24, 2019 Investments in and Advances to Affiliates Categorization [Axis] Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Text Block] Schedule of Level 3 Assets measured at Fair Value Proceeds from Lines of Credit, Total Proceeds From Lines Of Credit Borrowings under credit facilities Investment Policy [Text Block] Investment Classification Investment company portfolio turnover rate. Investment Company Portfolio Turnover Rate Portfolio turnover rate Investment interest rate Investment Interest Rate Gross Reductions Investments In And Advances To Affiliates At Fair Value Gross Reductions Gross Reductions STN Video Inc. STN Video Incorporation. S T N Video Incorporation [Member] Aria Systems, Inc. Aria Systems Incorporation [Member] Aria Systems, Inc. Income Tax Disclosure [Text Block] Tax Information Realized gain (loss) Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 Fidelis cybersecurity incorporation. Fidelis Cybersecurity Incorporation [Member] Fidelis Cybersecurity, Inc. Income Tax Disclosure [Abstract] Increase Decrease In Interest Payable Net Interest payable Line of credit facility stated maturity date. Line Of Credit Facility Stated Maturity Date Line of credit facility stated maturity date Final payment fee Investment Final Payment Fee Investment final payment fee. Percentage of minimum distribution amount exceeds distributions for year. Percentage Of Minimum Distribution Amount Exceeds Distributions For Year Percentage of minimum distribution amount exceeds distributions for year Net investment income per common share Investment Company Investment Income Loss Per Share Net investment income Scenario plan five. Scenario Plan Five [Member] Scenario Plan Five U S Treasury Bill Securities [Member] U.S. Treasury Bills CloudPay, Incorporation. Cloud Pay Incorporation [Member] CloudPay, Inc. Investment Company Financial Ratios [Abstract] Ratio/Supplemental Data: Issuance of common stock, Shares Stock Issued During Period Shares New Issues Investment Owned Percent Of Net Assets Percentage of Net Assets Net Asset Value Per Share Net asset value at end of period Net asset value at beginning of period Net asset value per share Increase Decrease In Other Receivables Other accounts receivable Class P common units. Class P Common Units [Member] Class P Units Fair Value By Fair Value Hierarchy Level [Axis] Fair Value Hierarchy and NAV Issuance date eight. Issuance Date Eight [Member] August 31, 2018 Mingle Healthcare Solutions Incorporation. Mingle Healthcare Solutions Incorporation [Member] Mingle Healthcare Solutions, Inc. Equity [Abstract] Line Of Credit Facility Maximum Monthend Outstanding Amount Aggregate commitment amount to maximum end Purchases of investments Payments for Purchase of Investment, Operating Activity Financial Instruments Disclosure [Text Block] Derivative Financial Instruments Series C one preferred stock warrant. Series C One Preferred Stock Warrant [Member] Warrant for Series C-1 Preferred Stock Investment owned from voting securities. Investment Owned From Voting Securities Investment owned from voting securities Concentration Risk Disclosure [Text Block] Concentration of Credit Risk Debt Instrument Interest Rate Stated Percentage Debt instrument, interest rate stated percentage Related Party [Domain] Related Party Second lien term loans. Second Lien Term Loans [Member] Second Lien Term Loans Additional paid-in capital Additional Paid in Capital, Common Stock Incentive fee income. Incentive Fee Income Incentive fee income Series AA preferred stock warrant. Series A A Preferred Stock Warrant [Member] Series AA Preferred Stock Warrant Statement Scenario [Axis] Scenario Debt Securities Held To Maturity Nonaccrual Interest Income Total interest VTX intermediate holdings incorporation. V T X Intermediate Holdings Incorporation [Member] VTX Intermediate Holdings, Inc. (dba VertexOne) Unamortized deferred financing costs Unamortized Debt Issuance Expense Investment company change in unrealized appreciation (depreciation). Investment Company Change In Unrealized Appreciation Depreciation Change in unrealized appreciation (depreciation) Application software. Application Software [Member] Application Software Scenario plan eight. Scenario Plan Eight [Member] Scenario Plan Eight Oaktree strategic relationship. Oaktree Strategic Relationship [Member] Oaktree Strategic Relationship Accrued Liabilities And Other Liabilities Accrued expenses and other liabilities Entity Filer Category Series A preferred stock warrant three. Series A Preferred Stock Warrant Three [Member] Series A Preferred Stock Warrant Three Qualifying Assets Qualifying Assets [Member] Qualifying Assets [Member] Purchases of U.S. Treasury Bills Payments for Purchase of Securities, Operating Activities VERO Biotech Limited Liability Company. V E R O Biotech Limited Liability Company [Member] VERO Biotech LLC Operating Expenses Total operating expenses Second private offerings. Second Private Offerings [Member] Second Private Offering Entity Current Reporting Status Issuance date nineteen. Issuance Date Nineteen [Member] December 20, 2019 Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation By Asset Class [Domain] Asset Class Initial Private Offering Initial private offering. Initial Private Offering [Member] Net investment income Net Investment Income Net investment income PRIME Prime Rate [Member] Total increase (decrease) in net assets Total increase (decrease) in net assets Investment Company Net Assets Period Increase Decrease Stockholders Equity Note Disclosure [Text Block] Net Assets Tax reconciliation of stockholders' equity. Tax Reconciliation Of Stockholders Equity Tax reconciliation of stockholders' equity in accordance with U.S. GAAP Percentage of minimum beneficial ownership of voting securities for control. Percentage Of Minimum Beneficial Ownership Of Voting Securities For Control Percentage of minimum beneficial ownership of voting securities for control Net assets at end of period Stockholders Equity Balance, end of period Balance, beginning of period Total net assets Investment Income Net Net investment income Total investment income Proceeds from reverse repurchase agreements. Proceeds From Reverse Repurchase Agreements Proceeds from reverse repurchase agreements Percentage of pre-Incentive Fee net investment income accrued. Percentage Of Minimum Pre Incentive Fee Net Investment Income Accrued Percentage of minimum pre-incentive fee net investment income accrued Fair Value By Asset Class [Axis] Asset Class Entity Tax Identification Number Scenario Plan [Member] Scenario, Plan Common stock, par value Common Stock Value Retained Earnings (Accumulated Deficit), Total Retained Earnings Accumulated Deficit Distributable (losses) Statement Equity Components [Axis] Equity Components Net realized gain/(loss) Derivative, Gain (Loss) on Derivative, Net, Total Derivative Gain Loss On Derivative Net From affiliated investments Affiliated Investments [Member] Affiliated investments. Receivables, other than interest earned, that is due but not received. Other Accounts Receivable Other accounts receivable Cash And Cash Equivalents Policy [Text Block] Cash and Cash Equivalents Health care technology. Health Care Technology [Member] Health Care Technology Investment interest cash cap. Investment Interest Cash Cap Investment Interest Cash Cap Advertising sector. Advertising Sector [Member] Advertising Prepaid expenses Prepaid Expense, Current Prepaid Expense, Current, Total Legal Fees Placement agent fees Dejero Labs Inc. Dejero Labs Incorporation [Member] Dejero Labs Inc. Fair value, Beginning balance Fair value, Ending balance Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value Percentage of non-cash PIK interest and dividend income Percentage of Net Assets on Non Cash Paid-in Kind Interest and Dividend Income Percentage of net assets on non-cash paid-in kind interest and dividend income. Tranche VI Debt tranche six. Debt Tranche Six [Member] Percentage of common stock shares issued and outstanding. Percentage Of Common Stock Shares Issued And Outstanding Percentage of common stock shares issued and outstanding Percentage of quarterly base management fee Percentage Of Quarterly Base Management Fee Percentage of quarterly base management fee. Entity Emerging Growth Company Related Party Transaction [Axis] Related Party Transaction Route Ninety Two Medical, Incorporation. Route Ninety Two Medical Incorporation [Member] Route 92 Medical, Inc. Operating Expenses [Abstract] Operating expenses Synack, Inc. Synack Incorporation [Member] Synack Incorporation. Interest expense Total Interest Expense and Fees Interest Expense Debt Total cost of debt AllClear ID, Incorporation. All Clear I D Incorporation [Member] AllClear ID, Inc. Sales or repayments of investments Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales Sales or repayments of investments Measurement Input Price Volatility [Member] Average Industry Volatility Proceeds from reverse repurchase agreements Proceeds from Securities Purchased under Agreements to Resell Dividends payable date of record Dividends Payable, Date of Record 7.50% Notes due 2027 Seven Point Five Zero Percentage Notes Due Two Thousand Twenty Seven [Member] Seven Point Five Zero Percentage Notes Due Two Thousand Twenty Seven [Member] CANADA Canada Kin Insurance, Inc. Kin Insurance Incorporation [Member] Kin Insurance Incorporation. Moximed, Inc. Moximed Incorporation [Member] Moximed Incorporation. Issuance date twenty nine. Issuance Date Twenty Nine [Member] May 13, 2021 Issuance date eighteen. Issuance Date Eighteen [Member] November 12, 2019 Scenario plan six. Scenario Plan Six [Member] Scenario Plan Six Issuance date twelve. Issuance Date Twelve [Member] March 26, 2019 Schedule Of Stock By Class [Table] Schedule Of Stock By Class [Table] Equity Securities Fv Ni Measurement Input Equity securities, measurement input Accumulated Amortization Deferred Finance Costs Accumulated amortization, deferred debt costs Issuance date three. Issuance Date Three [Member] April 19, 2017 Goldman Sachs Goldman Sachs [Member] Goldman Sachs. Debt securities held to maturity accrual original issue discount. Debt Securities Held To Maturity Accrual Original Issue Discount Original issue discount Schedule Of Equity Method Investment Equity Method Investee Name [Axis] Investment, Name Tranche IV Debt, tranche four. Debt Tranche Four [Member] Pivot3 Holdings, Inc. Pivot3 holdings Inc. Pivot3 Holdings Inc [Member] Series A Preferred Stock Warrant Two Series A preferred stock warrant two. Series A Preferred Stock Warrant Two [Member] Debt Instrument Description Debt instrument, description Document Transition Report Debt financing fees. Debt Financing Fees Debt financing fees Line Of Credit Facility Interest Rate Description Line of credit facility, interest rate description Sale Of Stock Price Per Share Offering price Commitments And Contingencies Disclosure [Text Block] Commitments and Contingencies Entity Common Stock, Shares Outstanding Summary of common stock. Summary Of Common Stock Table [Text Block] Summary of Common Stock Issued, Price Per Share and Proceeds Raised Series D preferred stock warrant. Series D Preferred Stock Warrant [Member] Warrant for Series D Preferred Stock Earnings Per Share Reconciliation [Abstract] Basic and diluted income per common share Amortization of Deferred Debt Costs Amortization Of Financing Costs Amortization of deferred debt costs Risk Related to Inflation [member] Risk Related to Inflation [member] Net Income Loss Net increase in net assets resulting from operations Net increase in net assets resulting from operations Deferred incentive fees, Deferred Incentive Fees Deferred incentive fees Valuation Technique Option Pricing Model [Member] Option Pricing Model Weighted Average [Member] Weighted Average Reverse repurchase agreement. Reverse Repurchase Agreement Reverse repurchase agreement Education services. Education Services [Member] Education Services Massdrop, Inc. Massdrop Incorporation [Member] Massdrop, Inc. Series G convertible preferred stock warrant. Series G Convertible Preferred Stock Warrant [Member] Series G Convertible Preferred Stock Warrant Fair Value, Beginning Balance Fair Value, Ending Balance Investments In And Advances To Affiliates At Fair Value Fair Value, Beginning balance Credit agreement. Credit Agreement [Member] Credit Agreement Dtex Systems, Incorporation. Dtex Systems Incorporation [Member] Dtex Systems, Inc. Investment company, ratio of net increase (decrease) in net assets resulting from operations to average net assets. Investment Company Ration Of Net Increase Decrease In Net Assets Resulting From Operations To Average Net Assets Ratio of net increase (decrease) in net assets resulting from operations to average net assets Schedule Of Fair Value Assets And Liabilities Measured On Recurring Basis Table [Text Block] Schedule of Assets and Liabilities Measured at Fair Value Additional Paid In Capital [Member] Additional Paid-in Capital Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Table] Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Table] South Central United States. South Central United States [Member] South Central United States Expiration date Line Of Credit Facility Expiration Date1 Line of credit facility, expiration date Percentage of base management fee. Percentage Of Base Management Fee Percentage of base management fee Schedule of Components of Interest Expense, Amortization of Deferred Debt Costs, and Unused Fees on Credit Facility Schedule of Line of Credit Facilities [Table Text Block] Schedule Of Maturities Of Long Term Debt Table [Text Block] Schedule of Outstanding with Maturities Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques Table [Text Block] Schedule of Quantitative Information Regarding Level 3 Fair Value Measurements Entity Registrant Name Cash and Cash Equivalents, at Carrying Value, Total Cash And Cash Equivalents At Carrying Value Cash and cash equivalents Investment Company Realized And Unrealized Gain Loss On Investment And Foreign Currency [Abstract] Realized and unrealized gain (loss) on investments Earnings Per Share [Text Block] Net Increase in Net Assets Resulting from Operations per Common Share Statement Class Of Stock [Axis] Class of Stock Debt Instrument Maturity Date Debt instrument due date Investment owned reverse repurchase agreement percentage. Investment Owned Reverse Repurchase Agreement Percentage Reverse repurchase agreement percentage Market Approach Valuation Technique [Member] Market Approach Statement [Line Items] Statement [Line Items] Circadence corporation. Circadence Corporation [Member] Circadence Corporation Other income Other Income Title of 12(b) Security Common Stock, par value $0.01 per share Common Stock Common Stocks Sale Of Stock Consideration Received On Transaction Aggregate purchase price Net Cash Provided By Used In Operating Activities [Abstract] Cash flows from operating activities Equity Component [Domain] Equity Component Entity Address, State or Province Statement Geographical [Axis] Geographical Net increase (decrease) in cash Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect Net increase (decrease) in cash Document Type Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activities Entity Shell Company Schedule Of Investments [Table] Schedule Of Investments [Table] Debt instrument, redemption price per share Debt Instrument, Redemption Price Per Share Debt instrument, redemption price per share. Series A-six preferred stock two warrant. Series A Six Preferred Stock Two Warrant [Member] Warrant for Series A-6 Preferred Stock Fair Value Of Financial Instruments Policy Fair Value of Financial Instruments Percentage of aggregate cumulative realized capital gains. Percentage Of Aggregate Cumulative Realized Capital Gains Percentage of aggregate cumulative realized capital gains Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] Debt securities held to maturity fair value non Accrual. 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Issuance Date Two [Member] December 22, 2016 Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Change in unrealized appreciation (depreciation) on Level 3 investments Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss Mojix, Inc. Mojix Inc [Member] Mojix Inc Aspen Group, Incorporation. Aspen Group Incorporation [Member] Aspen Group Inc. Porch Group, Inc. Porch Group Incorporation [Member] Porch Group, Inc. Net change in unrealized appreciation (depreciation) on investments. Net Change In Unrealized Appreciation Depreciation On Investments Net change in unrealized appreciation (depreciation) on investments Security Exchange Name Scenario plan ten. Scenario Plan Ten [Member] Scenario Plan Ten Class Of Stock [Line Items] Class Of Stock [Line Items] Related party agreements and transactions effective date. Related Party Agreements And Transactions Effective Date Related party agreements and transactions effective date Significant Accounting Policies [Text Block] Significant of Accounting Policies Write off accrued and uncollected paid in kind interest and dividends. Write Off Accrued And Uncollected Paid In Kind Interest And Dividends Write off accrued and uncollected paid in kind interest and dividends Net cash provided by (used in) operating activities Net Cash Provided By Used In Operating Activities Net cash provided by (used in) operating activities Scenario plan nine. Scenario Plan Nine [Member] Scenario Plan Nine Tax Basis Of Investments Cost For Income Tax Purposes Tax cost on investments Commitments And Contingencies Disclosure [Abstract] Realized gain (loss) on control investments Realized (gain) loss on investments, including U.S. Treasury Bills Net realized gain (loss) on investments Gain Loss On Investments Measurement Input Expected Term [Member] Estimated Time to Exit Issuance date thirty two. Issuance Date Thirty Two [Member] October 25, 2021 Variable advance rate Debt Instrument Variable Advance Rate Debt instrument variable advance rate. Northwestern United States North-western United States. North Western United States [Member] Warrant [Member] Warrant Warrants New Accounting Pronouncements Policy Policy [Text Block] Recent Accounting Pronouncements Issuance date nine. Issuance Date Nine [Member] September 27, 2018 Shares of common stock outstanding ($0.01 par value, 100,000,000 shares authorized) Common Stock Shares Outstanding Shares outstanding at end of period Shares outstanding at beginning of period Average net assets Average Net Assets Average net assets. Accretion Amortization Of Discounts And Premiums Investments Amortization of fixed income premiums or accretion of discounts Borrowings Debt Disclosure [Text Block] Southeastern United States South-eastern United States. South Eastern United States [Member] Fair Value Inputs Level2 [Member] Level 2 Measurement Input Revenue Multiple [Member] Revenue Multiples Issuance date twenty one. Issuance Date Twenty One [Member] March 20, 2020 Debt, tranche three. Debt Tranche Three [Member] Tranche III Valuation of investments. Valuation Of Investments Policy [Text Block] Valuation of Investments Commitments And Contingencies Commitments and contingencies (Note 3) Offering costs Proceeds from (Payments to) Offering Costs Proceeds from (payments to) offering costs. Healthcare Sector [Member] Health Care Technology Common Stock Shares Issued Common stock, shares issued Liabilities [Abstract] Liabilities U.S. Treasury Bill U S Treasury Securities [Member] Total U.S.Treasury May 20, 2020 Issuance date twenty three. Issuance Date Twenty Three [Member] Variable Rate [Domain] Variable Rate Minimum Minimum [Member] Debt instrument, frequency of periodic payment Debt Instrument, Frequency of Periodic Payment Scenario plan four. Scenario Plan Four [Member] Scenario Plan Four Repaid amount Investment Repaid Amount Investment repaid amount. Investment Company Financial Highlights [Abstract] Maturity Date Investment Maturity Date Investment Due Date Senior secured term loans. Senior Secured Term Loans [Member] Senior Secured Term Loans Senior Secured Term Loan Reinvestment of dividends, value Stock Issued During Period Value Dividend Reinvestment Plan Stock issued during period, value, dividend reinvestment plan Repayments Of Lines Of Credit Repayments under credit facilities Base management fees. Base Management Fees Base management fees Common Stock Warrant. Common Stock Warrant [Member] Warrant for Common Stock Debt Instrument [Axis] Debt Instrument Stockholders Equity [Abstract] Net assets Treasury stock Treasury Stock [Member] Entity Address, Address Line Two Issuance date fifteen. Issuance Date Fifteen [Member] July 16, 2019 Investment Company Financial Highlights [Text Block] Financial Highlights Bombora incorporation. Bombora Incorporation [Member] Bombora, Inc. Western United States. Western United States [Member] Western United States Offering costs Offering Costs from Financing Activities Offering costs from financing activities. Subsequent Event [Member] Subsequent Event Collateral. Collateral Collateral Realized gain (loss) on investments, including U.S. Treasury Bills Realized Investment Gains (Losses), Total Realized Investment Gains Losses Net realized gain (loss) on investments Realized (gain) loss on investments, including U.S. Treasury Bills Related Party Transaction [Domain] Related Party Transaction Internet retail. Internet Retail [Member] Internet Retail Investment Income Dividend Dividend income Dividends paid to shareholders Investment Company, Distribution, Ordinary Income Payment in-kind interest Payment In Kind Interest Payment in kind interest. Investment owned interest percentage. Investment Owned Interest Percentage Investment percentage Technology Hardware Storage and Peripherals Technology hardware, storage and peripherals. Technology Hardware Storage And Peripherals [Member] Credit Facility Credit Facility. 2027 Notes Two Thousand Twenty Seven Notes [Member] Two Thousand Twenty Seven Notes. Change in unrealized appreciation (depreciation) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Period Increase (Decrease) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Period Increase (Decrease), Total Series A-1 Preferred Stock Series A-1 preferred stock. Series A1 Preferred Stock [Member] Entity Central Index Key Debt Instrument Interest Rate Increase Decrease Debt instrument, interest rate increase percentage Unused Commitments To Extend Credit Total unused commitments to extend financing Unfunded loan commitments Epic IO Technologies, Inc Epic IO Technologies, Incorporation. Epic I O Technologies Incorporation [Member] Advertising [Member] Advertising Warrants And Rights Outstanding Maturity Date Warrant, expiration date Valuation technique probability weighted expected return models . Valuation Technique Probability Weighted Expected Return Models [Member] PWERM Accounting Policies [Abstract] Increase Decrease In Accrued Liabilities And Other Operating Liabilities Accrued expenses and other liabilities Incentive fee hurdle rate. Incentive Fee Hurdle Rate Incentive fee hurdle rate Interest Expense Interest Expense Debt Excluding Amortization Stated interest expense Subsequent Event [Table] Subsequent Event [Table] Debt, tranche two. Debt Tranche Two [Member] Tranche II Measurement Input Type [Domain] Measurement Input Type Investment repurchased price. 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Biotechnology. Biotechnology [Member] Biotechnology Initial and Second Private Offering Initial and second private offering. Initial And Second Private Offering [Member] Measurement Input Type [Axis] Measurement Input Type Equity Securities Industry [Member] Industry Sector SOFR Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] Fair value assets transfer out of level 3 into level 2 amount. Fair Value Assets Transfer Out Of Level3 Into Level2 Amount Asset transfer out of level 3 into level 2 fair value Ending balance of Treasury Stock, Shares Treasury Stock, Common, Shares Computer and Electronics Retail Computer and electronics retail. Computer And Electronics Retail [Member] Percentage of minimum board representation for control. Percentage Of Minimum Board Representation For Control Percentage of minimum board representation for control Entity Interactive Data Current Non-cash portfolio purchases. Non Cash Portfolio Purchases Non-cash portfolio purchases Related Party Transactions Disclosure [Text Block] Related Party Agreements and Transactions Runway Growth Holdings LLC. Runway Growth Holdings L L C [Member] Runway Growth Holdings LLC Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract] Supplemental and non-cash financing cash flow information: Related Party Transactions [Abstract] Ending balance of Treasury Stock Treasury Stock, Common, Value Adjustments To Additional Paid In Capital Stock Issued Issuance Costs Offering cost Local Phone Number Issuance date twenty seven. Issuance Date Twenty Seven [Member] March 19, 2021 Distribution. Distribution Policy [Text Block] Distribution Issuance date one. Issuance Date One [Member] October 8, 2015 SetPoint Medical Corporation. Set Point Medical Corporation [Member] SetPoint Medical Corporation Eleven percentage Series A cumulative redeemable perpetual preferred stock. Eleven Percentage Series A Cumulative Redeemable Perpetual Preferred Stock [Member] 11% Series A Cumulative Redeemable Perpetual Preferred Stock Issuance date ten. Issuance Date Ten [Member] November 15, 2018 Long-Term Debt Long-Term Debt [Member] Series C-Prime Preferred Stock Warrant Series C-prime preferred stock warrant expires on July eleven two thousand twenty six. Series C Prime Preferred Stock Warrant Expires On July Eleven Two Thousand Twenty Six [Member] Debt Disclosure [Abstract] Fair value measurement with unobservable inputs reconciliation recurring basis asset amortization of fixed income premiums or accretion of discounts. Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Amortization Of Fixed Income Premiums Or Accretion Of Discounts Amortization of fixed income premiums or accretion of discounts Basis Of Accounting Policy Policy [Text Block] Basis of Presentation Percentage of minimum net ordinary income for each calendar for distribution. Percentage Of Minimum Net Ordinary Income For Each Calendar For Distribution Percentage of minimum net ordinary income for each calendar for distribution Internet software and services. Internet Software And Services [Member] Internet Software and Services Non-control or non-affiliate investments. Non Control Or Non Affiliate Investments [Member] Non-control / Non-affiliate Investments Investment Owned Underlying Face Amount At Market Value Investment par value IPO I P O [Member] Investment Company Distribution To Shareholders [Abstract] Distributions to stockholders from: Measurement Input Risk Free Interest Rate [Member] Risk-free Interest Rate Issuance date twenty five. Issuance Date Twenty Five [Member] October 15, 2020 Acquisition of treasury shares, value Acquisition of treasury shares, value Treasury Stock Value Acquired Cost Method Incentive fees earned and payable in cash. Incentive Fees Earned And Payable In Cash Incentive fees earned and payable in cash Mustang Bio, Inc. Mustang Bio, Incorporation. Mustang Bio Incorporation [Member] Capital gains incentive fee accrued. Capital Gains Incentive Fee Accrued Capital gains incentive fee accrued Total debt, net of unamortized deferred debt costs Total commitments Total Commitment Long Term Debt Total debt, less unamortized deferred debt costs Shares Outstanding Balance, end of period Balance, beginning of period (in shares) Percentage of minimum capital gains exceed capital losses for distribution for one year period. Percentage Of Minimum Capital Gains Exceed Capital Losses For Distribution For One Year Period Percentage of minimum capital gains exceed capital losses for distribution for one year period Longtail Ad Solutions, Inc. Longtail Ad Solutions, Inc. Longtail Ad Solutions Inc [Member] Marleys Spoon AG. Marleys Spoon A G [Member] Marley Spoon AG Investment Company realized gain (loss). Investment Company Realized Gain Loss Realized gain (loss) Common Class A [Member] Class A Common Stock Debt Instrument Name [Domain] Debt Instrument, Name Document Fiscal Year Focus FiscalNote incorporation. Fiscal Note Incorporation [Member] FiscalNote, Inc. Debt, tranche one. Debt Tranche One [Member] Tranche I Investment valuation techniques. Investment Valuation Techniques Policy [Text Block] Investment Valuation Techniques Increase Decrease In Accrued Interest Receivable Net Accrued interest receivable Net investment income per common share, Basic Earnings Per Share, Basic, Total Earnings Per Share Basic Basic Dividends Common Stock Cash Dividends common stock cash Investment income from control investments. Investment Income From Control Investments Investment income from control investments Assets [Abstract] Assets Investments, Fair Value Disclosure, Total Investments Fair Value Disclosure Investments Nalu Medical, Inc Nalu Medical Incorporation [Member] Nalu Medical Incorporation. Non-accrual of investments. Non Accrual Of Investments Policy [Text Block] Non-Accrual of Investments Subscriptions receivable Subscriptions Receivable Subscriptions Receivable. Schedule of Borrowings Schedule of Long-Term Debt Instruments [Table Text Block] Incentive fees accrued and generated from deferred interest. Incentive Fees Accrued And Generated From Deferred Interest Incentive fees accrued and generated from deferred interest Line Of Credit Facility Expiration Period Line of credit facility, amortization period Class B Non-Voting Stock Warrant, Class B Non Voting Stock Warrant [Member] Class B Non Voting Stock Warrant Treasury stock Treasury Stock Treasury Stock, Value Treasury Stock, Value, Total Common stock initial capital commitment. Common Stock Initial Capital Commitment Common stock initial capital commitment Shares Issued Price Per Share Price Per Share Total Commitment Debt instrument principal amount Amount Percentage of beneficial ownership of voting securities. Percentage Of Beneficial Ownership Of Voting Securities Percentage of beneficial ownership of voting securities Percentage of common stock initial capital commitment. Percentage Of Common Stock Initial Capital Commitment Percentage of common stock initial capital commitment Business Acquisition Percentage Of Voting Interests Acquired Control investments, percentage of voting interests acquired Investment Interest PIK Investment, Interest Rate, Paid in Kind Affiliate investments. Affiliate Investments [Member] Affiliate Investments Series A-six preferred stock one warrant. Series A Six Preferred Stock One Warrant [Member] Warrant for Series A-6 Preferred Stock Dividends Payable Amount Per Share Dividends declared payable per share Income Taxes Paid, Net, Total Income Taxes Paid Net Taxes paid Revelle Aesthetics, Incorporation. Revelle Aesthetics Incorporation [Member] Revelle Aesthetics, Inc. Valuation Technique [Axis] Valuation Approach and Technique Preferred Stock [Member] Preferred Stock Preferred Stocks Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total Profit Loss Net increase in net assets resulting from operations Issuance date thirty. Issuance Date Thirty [Member] August 12, 2021 Dividends, Common Stock, Total Dividends Common Stock Dividends common stock Debt instrument redemption description Debt Instrument, Redemption, Description Percentage of adjusted pre-incentive fee net investment income. Percentage Of Adjusted Pre Incentive Fee Net Investment Income Percentage of adjusted pre-incentive fee net investment income Class Of Warrant Or Right Exercise Price Of Warrants Or Rights1 Warrant, exercise price Management fees Management Fee Expense Administration agreement. Administration Agreement [Member] Administration Agreement Total Commitment Line Of Credit Facility Commitment Fee Amount Credit agreement and restated amount Fair Value Measurements Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV Issuance date twenty two. Issuance Date Twenty Two [Member] March 31, 2020 ShareThis, Incorporation. Share This Incorporation [Member] ShareThis, Inc. Increase Decrease In Operating Capital [Abstract] Changes in operating assets and liabilities: Aginity, Incorporation. Aginity Incorporation [Member] Aginity Incorporation Issuance date thirteen. Issuance Date Thirteen [Member] May 21, 2019 Investments in and Advances to Affiliates, at Fair Value, Period Increase (Decrease), Total Investments In And Advances To Affiliates At Fair Value Period Increase Decrease Net Realized Gains (Losses) Related Party Transaction [Line Items] Related Party Transaction [Line Items] Investments in and Advances to Affiliates Categorization [Domain] Percentage of maximum board representation. Percentage Of Maximum Board Representation Percentage of maximum board representation Schedule of Unfunded Commitments to Extend Financing Schedule of Unfunded Commitments to Extend Financing [Table Text Block] Schedule of unfunded commitments to extend financing. Issuance of shares of common stock under dividend reinvestment plan. Issuance Of Shares Of Common Stock Under Dividend Reinvestment Plan Issuance of shares of common stock under dividend reinvestment plan Fee income Investment Fee Income Investment fee income. Gynesonics, Incorporation. Gynesonics Incorporation [Member] Gynesonics, Inc. Investments In And Advances To Affiliates At Fair Value Gross Additions Gross Additions Credit Sesame, Inc. Credit sesame, incorporation. Credit Sesame Incorporation [Member] Dividends payable Dividends Payable, Date to be Paid Investment company return from accretion. Investment Company Return From Accretion Return from accretion Maximum Maximum [Member] Warrants And Rights Outstanding Term Warrants outstanding, term Summary of significant accounting policies. Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Series D-3 Preferred Stock Warrant Series D-3 Preferred Stock Warrant. Series D Three Preferred Stock Warrant [Member] Number of fees components. Number Of Fees Components Number of fees components Series G Preferred Stock [Member] Series G Preferred Stock Increase (decrease) in net assets from operations: Investment Company Net Assets From Operations Increase Decrease [Abstract] Tranche V Debt tranche five. Debt Tranche Five [Member] Payment in-kind interest income Payment in-Kind Interest Income Payment in-kind interest income. Issuance date twenty four. Issuance Date Twenty Four [Member] August 6, 2020 Allurion Technologies, Incorporation. Allurion Technologies Incorporation [Member] Allurion Technologies, Inc. Tax expense Operating Tax Expense Operating tax expense. Ratio of net operating expenses to average net assets Investment Company Net Operating Expenses To Average Net Assets Investment company net operating expenses to average net assets. Fair Value Inputs Level3 [Member] Level 3 Use Of Estimates Use of Estimates Non Control / Non Affiliate Investments Including Treasury Bills Non Control Or Non Affiliate Investments Including Treasury Bills [Member] Non control or non affiliate investments including treasury bills. Applicable margin rate Debt Instrument, Basis Spread on Variable Rate Summary of significant accounting policies. Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Net Assets, Total Assets Net Net assets at end of period Net assets at beginning of period Net assets at end of period Debt Instrument Measurement Input Debt securities, measurement input Transfers out of Level 3 Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 Transfers out of Level 3 Advisory agreement. Advisory Agreement [Member] Advisory Agreement Maximum Qualifying assets. Maximum Qualifying Assets [Member] Maximum Qualifying Assets [Member] Due To Affiliate Current And Noncurrent Due to affiliate Principal Long-Term Debt, Gross Common Stock Shares Authorized Common stock, shares authorized Short-Term Debt, Type [Domain] Trading Symbol Common stock warrant two. Common Stock Warrant Two [Member] Common Stock Warrant Two Schedule Of Stockholders Equity Table [Text Block] Summary of Capital Activity Carrying amount of the unpaid portion of the incentive fee due to the Company's external investment adviser. Accrued Incentive Fees Accrued incentive fees Series G preferred stock warrant. Series G Preferred Stock Warrant [Member] Warrant for Series G Preferred Stock Issuance date sixteen. Issuance Date Sixteen [Member] August 26, 2019 Sales or maturities of U.S. Treasury Bills Proceeds from Sale of Securities, Operating Activities Title Of Individual With Relationship To Entity [Domain] Title of Individual Subsequent Event Type [Axis] Subsequent Event Type Issuance date twenty. Issuance Date Twenty [Member] December 23, 2019 Administrator reimbursed and accrued related to overhead allocation expense. Administrator Reimbursed And Accrued Related To Overhead Allocation Expense Administrator reimbursed and accrued related to overhead allocation expense Investment on board representation Investment On Board Representation Investment on board representation. Deferred Charges Policy [Text Block] Deferred Debt Costs From Non-controlled/ Non-affiliated Investments Non Controlled Non Affiliated Investments [Member] Non controlled non affiliated investments. Professional Fees Professional fees Weighted Average Number Of Shares Outstanding Diluted Disclosure Items [Abstract] Weighted-average shares outstanding for the period CareCloud, Inc Care Cloud Incorporation [Member] CareCloud, Inc. Schedule Of Related Party Transactions By Related Party [Table] Schedule Of Related Party Transactions By Related Party [Table] Title Of Individual [Axis] Title of Individual Acquisition of treasury shares Treasury shares acquired Acquisition of treasury shares Treasury Stock Shares Acquired Treasury shares acquired Board of Director Director [Member] Proceeds from Notes Proceeds from Issuance of Unsecured Debt Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss Change in unrealized appreciation (depreciation) Common Stock Par Or Stated Value Per Share Common stock, par value North-eastern United States. North Eastern United States [Member] Northeastern United States Net increase in net assets resulting from operations per common share Investment Company, Net Asset Value Per Share, Period Increase (Decrease) Investment Company, Net Asset Value Per Share, Period Increase (Decrease), Total Maximum cost of shares that may be repurchased Stock Repurchase Program Authorized Amount1 Net change in unrealized appreciation (depreciation) on investments, including U.S. Treasury Bills Net change in unrealized appreciation (depreciation) on investments Unrealized Gain (Loss) on Investments Derivative Instrument Risk [Axis] Derivative Instrument Number of loans. Number Of Loans Number of loans Turning tech intermediate incorporation. Turning Tech Intermediate Incorporation [Member] Turning Tech Intermediate, Inc. Series A preferred stock warrant one. Series A Preferred Stock Warrant One [Member] Series A Preferred Stock Warrant One UNITED KINGDOM United Kingdom Debt Instrument [Line Items] Debt Instrument [Line Items] Longterm Debt Type [Domain] Long-Term Debt, Type Portfolio Investments Excluding U.S. Treasury Bill Held Portfolio Investments Excluding U.S. Treasury Bill.