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Schedule of Investments - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Investments [Abstract]    
Amortized cost [1] $ 378,175,594 $ 378,081,148
Fair value [2] $ 377,640,318 $ 376,992,972
Percentage of net assets 156.60% 197.90%
Investment, Identifier [Axis]: "Nurses Staffing, LLC (dba Nurses 24/7) First Lien Senior Secured Term Loan SOFR Spread 7.00% Cash Plus 3.00% PIK Interest Rate 11.31% Cash Plus 3.00% PIK Due 8/26/2028"    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9] star:NursesStaffingLLCDbaNurses247FirstLienSeniorSecuredTermLoanSOFRSpread700CashPlus300PIKInterestRate1131CashPlus300PIKDue8262028Member  
Investment, Significant Unobservable Input [true false] [7] true  
Basis spread on variable rate [7],[10] 7.00%  
Paid in Kind Basis Spread Variable Rate [7],[10] 3.00%  
Interest Rate [7] 11.31%  
PIK Interest Rate [7] 3.00%  
Acquisition date [7] May 26, 2023  
Maturity date [7] Aug. 26, 2028  
Principal, Shares, Units [7] $ 5,787,937  
Amortized cost [1],[7] 5,684,377  
Fair value [2],[7] $ 5,665,232  
Percentage of net assets [7] 2.40%  
Investment, Identifier [Axis]: "Nurses Staffing, LLC (dba Nurses 24/7) First Lien Senior Secured Term Loan SOFR Spread 7.26% Cash Plus 2.00% PIK Interest Rate 12.59% Cash Plus 2.00% PIK Due 8/26/2028"    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11]   star:NursesStaffingLLCDbaNurses247FirstLienSeniorSecuredTermLoanSOFRSpread726CashPlus200PIKInterestRate1259CashPlus200PIKDue8262028Member
Investment, Significant Unobservable Input [true false] [11]   true
Basis spread on variable rate [10],[11]   7.26%
Paid in Kind Basis Spread Variable Rate [10],[11]   2.00%
Interest Rate [11]   12.59%
PIK Interest Rate [11]   2.00%
Acquisition date [11]   May 26, 2023
Maturity date [11]   Aug. 26, 2028
Principal, Shares, Units [11]   $ 7,396,865
Amortized cost [1],[11]   7,251,132
Fair value [2],[11]   $ 7,258,544
Percentage of net assets [11]   3.80%
Investment, Identifier [Axis]: 48forty Intermediate Holdings, Inc. First Lien Senior Secured Term Loan SOFR Spread 5.10% Plus 2.00% Interest Rate 9.43% Cash Plus 2.00% Due 11/30/2029    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[12] star:Four8fortyIntermediateHoldingsIncFirstLienSeniorSecuredTermLoanSOFRSpread510Plus200InterestRate943CashPlus200Due11302029Member  
Investment, Significant Unobservable Input [true false] [12] true  
Basis spread on variable rate [10],[12] 2.00%  
Paid in Kind Basis Spread Variable Rate [10],[12] 5.10%  
Interest Rate [12] 2.00%  
PIK Interest Rate [12] 9.43%  
Acquisition date [12] Oct. 11, 2022  
Maturity date [12] Nov. 30, 2029  
Principal, Shares, Units [12] $ 14,817,041  
Amortized cost [1],[12] 14,323,723  
Fair value [2],[12] $ 13,163,459  
Percentage of net assets [12] 5.50%  
Investment, Identifier [Axis]: 48forty Intermediate Holdings, Inc. First Lien Senior Secured Term Loan SOFR Spread 6.10% Interest Rate 11.45% Due 12/1/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[13]   star:Four8fortyIntermediateHoldingsIncSeniorSecuredTermLoanSOFRSpread610InterestRate1145Due1212026Member
Investment, Significant Unobservable Input [true false] [13]   true
Basis spread on variable rate [10],[13]   6.10%
Interest Rate [13]   11.45%
Acquisition date [13]   Oct. 11, 2022
Maturity date [13]   Dec. 01, 2026
Principal, Shares, Units [13]   $ 14,812,030
Amortized cost [1],[13]   14,299,832
Fair value [2],[13]   $ 13,807,774
Percentage of net assets [13]   7.20%
Investment, Identifier [Axis]: Aerospace & Defense First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:AerospaceDefenseFirstLienSeniorSecuredTermLoanMember star:AerospaceDefenseFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Aerospace & Defense Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:AerospaceDefenseWarrantsAndOtherEquitySecuritiesMember star:AerospaceDefenseWarrantsAndOtherEquitySecuritiesMember
Investment, Identifier [Axis]: Aerospace & Defense Warrants and Other Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 1,354 $ 176
Amortized cost [1] 142,485 142,485
Fair value [2] $ 32,148 $ 0
Percentage of net assets 0.00% 0.00%
Investment, Identifier [Axis]: Aerospace Defense First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 8,980,890 $ 7,828,281
Amortized cost [1] 8,776,295 7,760,936
Fair value [2] $ 8,071,431 $ 7,394,161
Percentage of net assets 3.40% 3.90%
Investment, Identifier [Axis]: Ambient Enterprises Holdco LLC First Lien Senior Secured Term Loan SOFR Spread 5.75% Interest Rate 10.07% Due 6/30/2030    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[14] star:AmbientEnterprisesHoldcoLLCFirstLienSeniorSecuredTermLoanSOFRSpread575InterestRate1007Due6302030Member  
Investment, Significant Unobservable Input [true false] [7],[14] true  
Basis spread on variable rate [7],[10],[14] 5.75%  
Interest Rate [7],[14] 10.07%  
Acquisition date [7],[14] Dec. 31, 2024  
Maturity date [7],[14] Jun. 30, 2030  
Principal, Shares, Units [7],[14] $ 6,436,872  
Amortized cost [1],[7],[14] 6,327,097  
Fair value [2],[7],[14] $ 6,327,097  
Percentage of net assets [7],[14] 2.60%  
Investment, Identifier [Axis]: Ambient Enterprises Holdco LLC First Lien Senior Secured Term Loan SOFR Spread 5.75% Interest Rate 10.07% Due 6/30/2030, One    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[14] star:AmbientEnterprisesHoldcoLLCFirstLienSeniorSecuredTermLoanSOFRSpread575InterestRate1007Due6302030OneMember  
Investment, Significant Unobservable Input [true false] [7],[14] true  
Basis spread on variable rate [7],[10],[14] 5.75%  
Interest Rate [7],[14] 10.07%  
Acquisition date [7],[14] Dec. 31, 2024  
Maturity date [7],[14] Jun. 30, 2030  
Principal, Shares, Units [7],[14] $ 1,789,397  
Amortized cost [1],[7],[14] 1,758,861  
Fair value [2],[7],[14] $ 1,758,861  
Percentage of net assets [7],[14] 0.70%  
Investment, Identifier [Axis]: Arrow Home Health, LLC (dba Acara Home Health) - Class 1 Units Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16],[17] star:ArrowHomeHealthLLCDbaAcaraHomeHealthClass1UnitsPreferredEquitySecuritiesMember [15] star:ArrowHomeHealthLLCDbaAcaraHomeHealthClass1UnitsPreferredEquitySecuritiesMember [18]
Investment, Significant Unobservable Input [true false] [16],[17] true [15] true [18]
Basis spread on variable rate [10],[16],[17] 0.00% [15] 0.00% [18]
Interest Rate [15],[16],[17] 0.00%  
Acquisition date [16],[17] Nov. 13, 2023 [15] Nov. 13, 2023 [18]
Principal, Shares, Units [16],[17] $ 56,005 [15] $ 56,005 [18]
Amortized cost [1],[16],[17] 56,005 [15] 56,005 [18]
Fair value [2],[16],[17] $ 112,010 [15] $ 112,010 [18]
Percentage of net assets [16],[17] 0.00% [15] 0.10% [18]
Investment, Identifier [Axis]: Arrow Home Health, LLC (dba Acara Home Health) - Class A Units Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[15],[17] star:ArrowHomeHealthLLCDbaAcaraHomeHealthClassAUnitsPreferredEquitySecuritiesMember  
Investment, Significant Unobservable Input [true false] [15],[17] true  
Basis spread on variable rate [10],[15],[17] 0.00%  
Interest Rate [15],[17] 0.00%  
Acquisition date [15],[17] Mar. 19, 2021  
Principal, Shares, Units [15],[17] $ 571,080  
Amortized cost [1],[15],[17] 564,321  
Fair value [2],[15],[17] $ 151,376  
Percentage of net assets [15],[17] 0.10%  
Investment, Identifier [Axis]: Arrow Home Health, LLC (dba Acara Home Health) - Class A Units Preferred Equity Securities Interest Rate 10.00% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17],[18]   star:ArrowHomeHealthLLCDbaAcaraHomeHealthClassAUnitsPreferredEquitySecuritiesInterestRate1000PIKMember
Investment, Significant Unobservable Input [true false] [17],[18]   true
Basis spread on variable rate [10],[17],[18]   0.00%
PIK Interest Rate [17],[18]   10.00%
Acquisition date [17],[18]   Mar. 19, 2021
Principal, Shares, Units [17],[18]   $ 571,080
Amortized cost [1],[17],[18]   564,321
Fair value [2],[17],[18]   $ 202,097
Percentage of net assets [17],[18]   0.10%
Investment, Identifier [Axis]: Arrow Home Health, LLC (dba Acara Home Health) First Lien Senior Secured Term Loan SOFR Spread 8.50% Interest Rate 13.83% Cash Due 3/19/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[18]   star:ArrowHomeHealthLLCDbaAcaraHomeHealthFirstLienSeniorSecuredTermLoanSOFRSpread850InterestRate1383CashDue3192026Member
Investment, Significant Unobservable Input [true false] [7],[18]   true
Basis spread on variable rate [7],[10],[18]   8.50%
Interest Rate [7],[18]   13.83%
Acquisition date [7],[18]   Mar. 19, 2021
Maturity date [7],[18]   Mar. 19, 2026
Principal, Shares, Units [7],[18]   $ 797,086
Amortized cost [1],[7],[18]   780,141
Fair value [2],[7],[18]   $ 748,782
Percentage of net assets [7],[18]   0.40%
Investment, Identifier [Axis]: Arrow Home Health, LLC (dba Acara Home Health)First Lien Senior Secured Term Loan SOFR Spread 8.50% Interest Rate 12.81% Due 3/19/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[15] star:ArrowHomeHealthLLCDbaAcaraHomeHealthFirstLienSeniorSecuredTermLoanSOFRSpread850InterestRate1281Due3192026Member  
Investment, Significant Unobservable Input [true false] [7],[15] true  
Basis spread on variable rate [7],[10],[15] 8.50%  
Interest Rate [7],[15] 12.81%  
Acquisition date [7],[15] Mar. 19, 2021  
Maturity date [7],[15] Mar. 19, 2026  
Principal, Shares, Units [7],[15] $ 797,086  
Amortized cost [1],[7],[15] 782,429  
Fair value [2],[7],[15] $ 701,117  
Percentage of net assets [7],[15] 0.30%  
Investment, Identifier [Axis]: BB-HH Platform, Inc. (dba Preferred Care Home Health) First Lien Senior Secured Term Loan SOFR Spread 7.00% Cash Plus 1.50% PIK Interest Rate 11.31% Cash Plus 1.50% PIK Due 5/16/2028    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[19] star:BBHHPlatformIncDbaPreferredCareHomeHealthFirstLienSeniorSecuredTermLoanSOFRSpread700CashPlus150PIKInterestRate1131CashPlus150PIKDue5162028Member  
Investment, Significant Unobservable Input [true false] [7],[19] true  
Basis spread on variable rate [7],[10],[19] 7.00%  
Paid in Kind Basis Spread Variable Rate [7],[10],[19] 1.50%  
Interest Rate [7],[19] 11.31%  
PIK Interest Rate [7],[19] 1.50%  
Acquisition date [7],[19] May 16, 2023  
Maturity date [7],[19] May 16, 2028  
Principal, Shares, Units [7],[19] $ 6,791,230  
Amortized cost [1],[7],[19] 6,694,095  
Fair value [2],[7],[19] $ 6,791,230  
Percentage of net assets [7],[19] 2.80%  
Investment, Identifier [Axis]: BB-HH Platform, Inc. (dba Preferred Care Home Health) First Lien Senior Secured Term Loan SOFR Spread 7.00% Cash Plus 1.50% PIK Interest Rate 12.33% Cash Plus 1.50% PIK Due 5/16/2028    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11]   star:BBHHPlatformIncDbaPreferredCareHomeHealthFirstLienSeniorSecuredTermLoanSOFRSpread700CashPlus150PIKInterestRate1233CashPlus150PIKDue5162028Member
Investment, Significant Unobservable Input [true false] [11]   true
Basis spread on variable rate [10],[11]   7.00%
Paid in Kind Basis Spread Variable Rate [10],[11]   1.50%
Interest Rate [11]   12.33%
PIK Interest Rate [11]   1.50%
Acquisition date [11]   May 16, 2023
Maturity date [11]   May 16, 2028
Principal, Shares, Units [11]   $ 6,661,564
Amortized cost [1],[11]   6,476,196
Fair value [2],[11]   $ 6,600,944
Percentage of net assets [11]   3.50%
Investment, Identifier [Axis]: CHG Parent Holding LLC (dba Coop Home Goods) Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17] star:CHGParentHoldingLLCDbaCoopHomeGoodsWarrantsAndOtherEquitySecuritiesMember star:CHGParentHoldingLLCDbaCoopHomeGoodsWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false] [17] true true
Basis spread on variable rate [10],[17] 0.00% 0.00%
Interest Rate [17] 0.00% 0.00%
Acquisition date [17] Jun. 18, 2021 Jun. 18, 2021
Principal, Shares, Units [17] $ 535,714 $ 535,714
Amortized cost [1],[17] 535,714 535,714
Fair value [2],[17] $ 617,857 $ 99,286
Percentage of net assets [17] 0.30% 0.10%
Investment, Identifier [Axis]: CSI IT, LLC (dba Consulting Solutions) First Lien Senior Secured Term Loan SOFR Spread 10.76% Interest Rate 16.09% Due 1/29/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11]   star:CSIITLLCDbaConsultingSolutionsFirstLienSeniorSecuredTermLoanSOFRSpread1076InterestRate1609Due1292026Member
Investment, Significant Unobservable Input [true false] [11]   true
Basis spread on variable rate [10],[11]   10.76%
Interest Rate [11]   16.09%
Acquisition date [11]   Jan. 29, 2021
Maturity date [11]   Jan. 29, 2026
Principal, Shares, Units [11]   $ 13,329,812
Amortized cost [1],[11]   13,139,755
Fair value [2],[11]   $ 13,196,514
Percentage of net assets [11]   6.90%
Investment, Identifier [Axis]: CSIITLLC Dba Consulting Solutions First Lien Senior Secured Term Loan SOFR Spread1076 Interest Rate1507 Due1292026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9] star:CSIITLLCDbaConsultingSolutionsFirstLienSeniorSecuredTermLoanSOFRSpread1076InterestRate1507Due1292026Member  
Investment, Significant Unobservable Input [true false] [7] true  
Basis spread on variable rate [7],[10] 10.76%  
Interest Rate [7] 15.07%  
Acquisition date [7] Jan. 29, 2021  
Maturity date [7] Jan. 29, 2026  
Principal, Shares, Units [7] $ 12,558,929  
Amortized cost [1],[7] 12,433,640  
Fair value [2],[7] $ 12,558,929  
Percentage of net assets [7] 5.20%  
Investment, Identifier [Axis]: Capone Holdings JV, LLC (dba LaSalle Staffing) Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17] star:CaponeHoldingsJVLLCDbaLaSalleStaffingPreferredEquitySecuritiesMember [15] star:CaponeHoldingsJVLLCDbaLaSalleStaffingPreferredEquitySecuritiesMember
Investment, Significant Unobservable Input [true false] [17] true [15] true
Basis spread on variable rate [10],[17] 0.00% [15] 0.00%
Interest Rate [17] 0.00% [15] 0.00%
Acquisition date [17] Feb. 15, 2022 [15] Feb. 15, 2022
Principal, Shares, Units [17] $ 4,000,000 [15] $ 4,000,000
Amortized cost [1],[17] 4,000,000 [15] 4,000,000
Fair value [2],[17] $ 6,700,000 [15] $ 6,047,467
Percentage of net assets [17] 2.80% [15] 3.20%
Investment, Identifier [Axis]: Caregility Corporation First Lien Senior Secured Term Loan SOFR Spread 9.26% Interest Rate 3.00% Cash Plus 11.59% PIK Due 1/31/2025    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[18]   star:CaregilityCorporationFirstLienSeniorSecuredTermLoanSOFRSpread926InterestRate300CashPlus1159PIKDue1312025Member
Investment, Significant Unobservable Input [true false] [7],[18]   true
Basis spread on variable rate [7],[10],[18]   9.26%
Interest Rate [7],[18]   3.00%
PIK Interest Rate [7],[18]   11.59%
Acquisition date [7],[18]   Dec. 29, 2021
Maturity date [7],[18]   Jan. 31, 2025
Principal, Shares, Units [7],[18]   $ 2,244,216
Amortized cost [1],[7],[18]   1,933,490
Fair value [2],[7],[18]   $ 2,244,216
Percentage of net assets [7],[18]   1.20%
Investment, Identifier [Axis]: Caregility Corporation First Lien Senior Secured Term Loan SOFR Spread 9.26% Interest Rate 7.00% Cash Plus 6.57% PIK Due 1/31/2025    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[15] star:CaregilityCorporationFirstLienSeniorSecuredTermLoanSOFRSpread926InterestRate700CashPlus657PIKDue1312025Member  
Investment, Significant Unobservable Input [true false] [7],[15] true  
Basis spread on variable rate [7],[10],[15] 9.26%  
Interest Rate [7],[15] 7.00%  
PIK Interest Rate [7],[15] 6.57%  
Acquisition date [7],[15] Dec. 29, 2021  
Maturity date [7],[15] Jan. 31, 2025  
Principal, Shares, Units [7],[15] $ 2,443,445  
Amortized cost [1],[7],[15] 2,313,620  
Fair value [2],[7],[15] $ 2,438,069  
Percentage of net assets [7],[15] 1.00%  
Investment, Identifier [Axis]: Caregility Corporation Senior Secured Notes Spread 8.00% Interest Rate 8.00%    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16] star:CaregilityCorporationSeniorSecuredNotesSpread800InterestRate800Member  
Investment, Significant Unobservable Input [true false] [16] true  
Basis spread on variable rate [10],[16] 8.00%  
Interest Rate [16] 8.00%  
Acquisition date [16] Jul. 03, 2023  
Principal, Shares, Units [16] $ 341,103  
Amortized cost [1],[16] 341,103  
Fair value [2],[16] $ 341,103  
Percentage of net assets [16] 0.10%  
Investment, Identifier [Axis]: Caregility Corporation Series A Units Preferred Equity Securities Interest Rate 8.00% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16] star:CaregilityCorporationSeriesAUnitsPreferredEquitySecuritiesInterestRate800PIKMember [15] star:CaregilityCorporationSeriesAUnitsPreferredEquitySecuritiesInterestRate800PIKMember [18]
Investment, Significant Unobservable Input [true false] [16] true [15] true [18]
Basis spread on variable rate [10],[16] 0.00% [15] 0.00% [18]
PIK Interest Rate [16] 8.00% [15] 8.00% [18]
Acquisition date [16] Dec. 31, 2022 [15] Dec. 31, 2022 [18]
Principal, Shares, Units [16] $ 151,018 [15] $ 151,018 [18]
Amortized cost [1],[16] 1,646,318 [15] 0 [18]
Fair value [2],[16] $ 1,188,605 [15] $ 1,383,250 [18]
Percentage of net assets [16] 0.50% [15] 0.70% [18]
Investment, Identifier [Axis]: Caregility Corporation Series B Units Preferred Equity Securities Interest Rate 8.00% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16] star:CaregilityCorporationSeriesBUnitsPreferredEquitySecuritiesInterestRate800PIKMember [15] star:CaregilityCorporationSeriesBUnitsPreferredEquitySecuritiesInterestRate800PIKMember [18]
Investment, Significant Unobservable Input [true false] [16] true [15] true [18]
Basis spread on variable rate [10],[16] 0.00% [15] 0.00% [18]
PIK Interest Rate [16] 8.00% [15] 8.00% [18]
Acquisition date [16] Jul. 03, 2023 [15] Jul. 03, 2023 [18]
Principal, Shares, Units [16] $ 446,889 [15] $ 446,689 [18]
Amortized cost [1],[16] 3,591,494 [15] 3,591,494 [18]
Fair value [2],[16] $ 4,368,416 [15] $ 4,108,869 [18]
Percentage of net assets [16] 1.80% [15] 2.20% [18]
Investment, Identifier [Axis]: Caregility Corporation Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:CaregilityCorporationWarrantsAndOtherEquitySecuritiesMember [15] star:CaregilityCorporationWarrantsAndOtherEquitySecuritiesMember [18]
Investment, Significant Unobservable Input [true false] true [15] true [18]
Basis spread on variable rate [10] 0.00% [15] 0.00% [18]
Interest Rate [15] 0.00%  
Acquisition date Dec. 29, 2021 [15] Dec. 29, 2021 [18]
Principal, Shares, Units $ 267,801 [15] $ 267,801 [18]
Amortized cost [1] 443,392 [15] 443,392 [18]
Fair value [2] $ 0 [15] $ 571,189 [18]
Percentage of net assets 0.00% [15] 0.30% [18]
Investment, Identifier [Axis]: Channel Factory Holdings, LLC Preferred Equity Securities Interest Rate 5.00% Plus 5.00% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16],[17] star:ChannelFactoryHoldingsLLCPreferredEquitySecuritiesInterestRate500Plus500PIKMember star:ChannelFactoryHoldingsLLCPreferredEquitySecuritiesInterestRate500Plus500PIKMember
Investment, Significant Unobservable Input [true false] [16],[17] true true
Basis spread on variable rate [10],[16],[17] 0.00% 0.00%
Interest Rate [16],[17] 5.00% 5.00%
PIK Interest Rate [16],[17] 5.00% 5.00%
Acquisition date [16],[17] Aug. 27, 2020 Aug. 27, 2020
Principal, Shares, Units [16],[17] $ 2,381,867 $ 2,381,867
Amortized cost [1],[16],[17] 2,442,592 2,442,592
Fair value [2],[16],[17] $ 5,552,308 $ 4,154,769
Percentage of net assets [16],[17] 2.30% 2.20%
Investment, Identifier [Axis]: Chemicals First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:ChemicalsFirstLienSeniorSecuredTermLoanMember star:ChemicalsFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Chemicals First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 14,812,500 $ 14,962,500
Amortized cost [1] 14,623,342 14,538,407
Fair value [2] $ 14,812,499 $ 14,538,406
Percentage of net assets 6.20% 7.50%
Investment, Identifier [Axis]: Chicken Soup For The Soul, LLC First Lien Senior Secured Term Loan SOFR Spread 8.60% Interest Rate 13.95% Due 3/31/2024    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[13]   star:ChickenSoupForTheSoulLLCFirstLienSeniorSecuredTermLoanSOFRSpread860InterestRate1395Due3312024Member
Investment, Significant Unobservable Input [true false] [13]   true
Basis spread on variable rate [10],[13]   8.60%
Interest Rate [13]   13.95%
Acquisition date [13]   Oct. 29, 2021
Maturity date [13]   Mar. 31, 2024
Principal, Shares, Units [13]   $ 6,380,856
Amortized cost [1],[13]   6,368,361
Fair value [2],[13]   $ 5,756,809
Percentage of net assets [13]   3.00%
Investment, Identifier [Axis]: Chicken Soup for The Soul, LLC First Lien Senior Secured Term Loan SOFR Spread 8.60% Interest Rate 12.93% Due 3/31/2024    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[12],[20],[21] star:ChickenSoupForTheSoulLLCFirstLienSeniorSecuredTermLoanSOFRSpread860InterestRate1293Due3312024Member  
Investment, Significant Unobservable Input [true false] [12],[20],[21] true  
Basis spread on variable rate [10],[12],[20],[21] 8.60%  
Interest Rate [12],[20],[21] 12.93%  
Acquisition date [12],[20],[21] Oct. 29, 2021  
Maturity date [12],[20],[21] Mar. 31, 2024  
Principal, Shares, Units [12],[20],[21] $ 6,380,856  
Amortized cost [1],[12],[20],[21] 6,380,856  
Fair value [2],[12],[20],[21] $ 1,681,994  
Percentage of net assets [12],[20],[21] 0.70%  
Investment, Identifier [Axis]: Clearview Systems, LLC (dba Rip-It) First Lien Senior Secured Term Loan SOFR Spread 10.65% Interest Rate 14.96% Plus 6.50% PIK Due 10/10/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[19] star:ClearviewSystemsLLCDbaRipItFirstLienSeniorSecuredTermLoanSOFRSpread1065InterestRate1496Plus650PIKDue10102027Member  
Investment, Significant Unobservable Input [true false] [7],[19] true  
Basis spread on variable rate [7],[10],[19] 10.65%  
Interest Rate [7],[19] 14.96%  
PIK Interest Rate [7],[19] 6.50%  
Acquisition date [7],[19] Oct. 11, 2022  
Maturity date [7],[19] Oct. 10, 2027  
Principal, Shares, Units [7],[19] $ 6,703,118  
Amortized cost [1],[7],[19] 6,609,366  
Fair value [2],[7],[19] $ 6,703,118  
Percentage of net assets [7],[19] 2.80%  
Investment, Identifier [Axis]: Clearview Systems, LLC (dba Rip-It) First Lien Senior Secured Term Loan SOFR Spread 7.65% Interest Rate 12.98% Due 10/11/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11],[19]   star:ClearviewSystemsLLCDbaRipItFirstLienSeniorSecuredTermLoanSOFRSpread765InterestRate1298Due10112027Member
Investment, Significant Unobservable Input [true false] [11],[19]   true
Basis spread on variable rate [10],[11],[19]   7.65%
Interest Rate [11],[19]   12.98%
Acquisition date [11],[19]   Oct. 11, 2022
Maturity date [11],[19]   Oct. 11, 2027
Principal, Shares, Units [11],[19]   $ 6,452,101
Amortized cost [1],[11],[19]   6,333,920
Fair value [2],[11],[19]   $ 6,367,578
Percentage of net assets [11],[19]   3.30%
Investment, Identifier [Axis]: Commercial Services & Supplies First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:CommercialServicesSuppliesFirstLienSeniorSecuredTermLoanMember star:CommercialServicesSuppliesFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Commercial Services & Supplies First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 3,974,826 $ 11,255,312
Amortized cost [1] 3,935,110 11,128,632
Fair value [2] $ 3,713,643 $ 11,055,036
Percentage of net assets 1.50% 5.70%
Investment, Identifier [Axis]: Commercial Services and Supplies Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:CommercialServicesAndSuppliesPreferredEquitySecuritiesMember star:CommercialServicesAndSuppliesPreferredEquitySecuritiesMember
Investment, Identifier [Axis]: Commercial Services and Supplies Preferred Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 192,444 $ 192,444
Amortized cost [1] 183,612 183,612
Fair value [2] $ 194,996 $ 227,311
Percentage of net assets 0.10% 0.10%
Investment, Identifier [Axis]: Consolidated Machine & Tool Holdings, LLC First Lien Senior Secured Term Loan Interest Rate 20.00% PIK Due 1/15/2025    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16],[22],[23]   star:ConsolidatedMachineToolHoldingsLLCFirstLienSeniorSecuredTermLoanInterestRate2000PIKDue1152025Member
Investment, Significant Unobservable Input [true false] [16],[22],[23]   true
Basis spread on variable rate [10],[16],[22],[23]   0.00%
Interest Rate [16],[22],[23]   20.00%
Acquisition date [16],[22],[23]   Nov. 22, 2023
Maturity date [16],[22],[23]   Jan. 15, 2025
Principal, Shares, Units [16],[22],[23]   $ 440,629
Amortized cost [1],[16],[22],[23]   437,211
Fair value [2],[16],[22],[23]   $ 437,210
Percentage of net assets [16],[22],[23]   0.20%
Investment, Identifier [Axis]: Consolidated Machine & Tool Holdings, LLC First Lien Senior Secured Term Loan SOFR Spread 11.01% Interest Rate 15.32% PIK Due 1/15/2025    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[21],[24] star:ConsolidatedMachineToolHoldingsLLCFirstLienSeniorSecuredTermLoanSOFRSpread1101InterestRate1532PIKDue1152025Member  
Investment, Significant Unobservable Input [true false] [7],[21],[24] true  
Basis spread on variable rate [7],[10],[21],[24] 11.01%  
Interest Rate [7],[21],[24] 15.32%  
Acquisition date [7],[21],[24] Jan. 15, 2020  
Maturity date [7],[21],[24] Jan. 15, 2025  
Principal, Shares, Units [7],[21],[24] $ 6,092,878  
Amortized cost [1],[7],[21],[24] 5,946,311  
Fair value [2],[7],[21],[24] $ 5,431,800  
Percentage of net assets [7],[21],[24] 2.30%  
Investment, Identifier [Axis]: Consolidated Machine & Tool Holdings, LLC Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17] star:ConsolidatedMachineToolHoldingsLLCWarrantsAndOtherEquitySecuritiesMember [25] star:ConsolidatedMachineToolHoldingsLLCWarrantsAndOtherEquitySecuritiesMember [26]
Investment, Significant Unobservable Input [true false] [17] true [25] true [26]
Basis spread on variable rate [10],[17] 0.00% [25] 0.00% [26]
Interest Rate [17] 0.00% [25] 0.00% [26]
Acquisition date [17] Jan. 15, 2020 [25] Jan. 15, 2020 [26]
Principal, Shares, Units [17] $ 176 [25] $ 176 [26]
Amortized cost [1],[17] 142,485 [25] 142,485 [26]
Fair value [2],[17] $ 0 [25] $ 0 [26]
Percentage of net assets [17] 0.00% [25] 0.00% [26]
Investment, Identifier [Axis]: Consolidated Machine & Tool Holdings, LLC Warrants and Other Equity Securities One    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:ConsolidatedMachineToolHoldingsLLCWarrantsAndOtherEquitySecuritiesOneMember  
Investment, Significant Unobservable Input [true false] true  
Basis spread on variable rate [10] 0.00%  
Interest Rate 0.00%  
Acquisition date Jan. 15, 2020  
Principal, Shares, Units $ 1,178  
Amortized cost [1] 0  
Fair value [2] $ 32,148  
Percentage of net assets 0.00%  
Investment, Identifier [Axis]: Consolidated Machine and Tool Holdings, LLC First Lien Senior Secured Term Loan SOFR Spread 11.00% Due 6/30/2025    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16],[21] star:ConsolidatedMachineAndToolHoldingsLLCFirstLienSeniorSecuredTermLoanSOFRSpread1100Due6302025Member  
Investment, Significant Unobservable Input [true false] [16],[21] true  
Basis spread on variable rate [10],[16],[21] 0.00%  
Interest Rate [16],[21] 11.00%  
Acquisition date [16],[21] May 22, 2024  
Maturity date [16],[21] Jun. 30, 2025  
Principal, Shares, Units [16],[21] $ 885,615  
Amortized cost [1],[16],[21] 869,176  
Fair value [2],[16],[21] $ 777,659  
Percentage of net assets [16],[21] 0.30%  
Investment, Identifier [Axis]: Consolidated Machine and Tool Holdings, LLC First Lien Senior Secured Term Loan SOFR Spread 11.01% Interest rate 11.44% Cash 4.90% PIK Due 1/15/2025    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11],[23]   star:ConsolidatedMachineAndToolHoldingsLLCFirstLienSeniorSecuredTermLoanSOFRSpread1101InterestRate1144Cash490PIKDue1152025Member
Investment, Significant Unobservable Input [true false] [11],[23]   true
Basis spread on variable rate [10],[11],[23]   11.01%
Interest Rate [11],[23]   11.44%
PIK Interest Rate [11],[23]   4.90%
Acquisition date [11],[23]   Jan. 15, 2020
Maturity date [11],[23]   Jan. 15, 2025
Principal, Shares, Units [11],[23]   $ 7,387,652
Amortized cost [1],[11],[23]   7,323,725
Fair value [2],[11],[23]   $ 6,956,951
Percentage of net assets [11],[23]   3.70%
Investment, Identifier [Axis]: Consolidated Machine and Tool Holdings, LLC First Lien Senior Secured Term Loan SOFR Spread 12.01% Interest rate 16.32% PIK Due 1/15/2025    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[21],[24] star:ConsolidatedMachineAndToolHoldingsLLCFirstLienSeniorSecuredTermLoanSOFRSpread1201InterestRate1632PIKDue1152025Member  
Investment, Significant Unobservable Input [true false] [7],[21],[24] true  
Basis spread on variable rate [7],[10],[21],[24] 12.01%  
Interest Rate [7],[21],[24] 16.32%  
Acquisition date [7],[21],[24] Jan. 19, 2023  
Maturity date [7],[21],[24] Jan. 15, 2025  
Principal, Shares, Units [7],[21],[24] $ 1,294,243  
Amortized cost [1],[7],[21],[24] 1,263,109  
Fair value [2],[7],[21],[24] $ 1,153,818  
Percentage of net assets [7],[21],[24] 0.50%  
Investment, Identifier [Axis]: Consolidated Machine and Tool Holdings, LLC First Lien Senior Secured Term Loan SOFR Spread 20.00% PIK Due 1/15/2025    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16],[21],[24] star:ConsolidatedMachineAndToolHoldingsLLCFirstLienSeniorSecuredTermLoanSOFRSpread2000PIKDue1152025Member  
Investment, Significant Unobservable Input [true false] [16],[21],[24] true  
Basis spread on variable rate [10],[16],[21],[24] 0.00%  
PIK Interest Rate [16],[21],[24] 20.00%  
Acquisition date [16],[21],[24] Nov. 22, 2023  
Maturity date [16],[21],[24] Jan. 15, 2025  
Principal, Shares, Units [16],[21],[24] $ 708,154  
Amortized cost [1],[16],[21],[24] 697,699  
Fair value [2],[16],[21],[24] $ 708,154  
Percentage of net assets [16],[21],[24] 0.30%  
Investment, Identifier [Axis]: Construction & Engineering First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:ConstructionEngineeringFirstLienSeniorSecuredTermLoanMember star:ConstructionEngineeringFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Construction & Engineering First Lien Senior Secured Term Loan Controlled Investments    
Investments [Abstract]    
Principal, Shares, Units $ 2,574,092 $ 53,035,735
Amortized cost [1] 2,548,389 52,047,015
Fair value [2] $ 2,430,200 $ 50,278,748
Percentage of net assets 1.00% 26.40%
Investment, Identifier [Axis]: Construction & Engineering First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 66,444,967  
Amortized cost [1] 65,320,314  
Fair value [2] $ 66,260,250  
Percentage of net assets 27.50%  
Investment, Identifier [Axis]: Construction & Engineering Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:ConstructionEngineeringPreferredEquitySecuritiesMember star:ConstructionEngineeringPreferredEquitySecuritiesMember
Investment, Identifier [Axis]: Construction & Engineering Preferred Equity Securities Controlled Investments    
Investments [Abstract]    
Principal, Shares, Units $ 3,375  
Amortized cost [1] 3,316,130  
Fair value [2] $ 3,519,772  
Percentage of net assets 1.50%  
Investment, Identifier [Axis]: Construction & Engineering Preferred Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 187,418 $ 189,043
Amortized cost [1] 3,560,642 5,153,950
Fair value [2] $ 7,021,936 $ 3,322,215
Percentage of net assets 2.90% 1.80%
Investment, Identifier [Axis]: Construction & Engineering Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:ConstructionEngineeringWarrantsAndOtherEquitySecuritiesMember star:ConstructionEngineeringWarrantsAndOtherEquitySecuritiesMember
Investment, Identifier [Axis]: Construction & Engineering Warrants and Other Equity Securities Controlled Investments    
Investments [Abstract]    
Principal, Shares, Units $ 295  
Amortized cost [1] 0  
Fair value [2] $ 0  
Percentage of net assets 0.00%  
Investment, Identifier [Axis]: Construction & Engineering Warrants and Other Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 899 $ 1,117
Amortized cost [1] 939,949 939,949
Fair value [2] $ 4,473,278 $ 1,939,562
Percentage of net assets 1.90% 1.00%
Investment, Identifier [Axis]: Consumer Finance First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9]   star:ConsumerFinanceFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Consumer Finance Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:ConsumerFinancePreferredEquitySecuritiesMember  
Investment, Identifier [Axis]: Consumer Finance Preferred Equity Securities Controlled Investments    
Investments [Abstract]    
Principal, Shares, Units $ 0  
Amortized cost [1] 0  
Fair value [2] $ 0  
Percentage of net assets 0.00%  
Investment, Identifier [Axis]: Consumer Finance Senior Unsecured Notes    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:ConsumerFinanceSeniorUnsecuredNotesMember  
Investment, Identifier [Axis]: Consumer Finance Senior Unsecured Notes Controlled Investments    
Investments [Abstract]    
Principal, Shares, Units $ 3,427,073  
Amortized cost [1] 3,427,073  
Fair value [2] $ 3,427,073  
Percentage of net assets 1.40%  
Investment, Identifier [Axis]: Consumer Finance Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9]   star:ConsumerFinanceWarrantsAndOtherEquitySecuritiesMember
Investment, Identifier [Axis]: Consumer Finance Warrants and Other Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units   $ 164,332
Amortized cost [1]   0
Fair value [2]   $ 190,807
Percentage of net assets   0.10%
Investment, Identifier [Axis]: Controlled Investments    
Investments [Abstract]    
Investment, Issuer Affiliation [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:InvestmentAffiliatedIssuersControlledMember star:InvestmentAffiliatedIssuersControlledMember
Amortized cost [1] $ 52,910,374 $ 7,368,843
Fair value [2] $ 50,680,798 $ 9,370,413
Percentage of net assets 20.90% 5.00%
Investment, Identifier [Axis]: Coop Home Goods LLC (dba Coop Home Goods) First Lien Senior Secured Term Loan SOFR Spread 8.26% Interest Rate 12.57% Due 6/18/2026    
Investments [Abstract]    
Investment, Significant Unobservable Input [true false] [7],[19] true  
Basis spread on variable rate [7],[10],[19] 8.26%  
Interest Rate [7],[19] 12.57%  
Acquisition date [7],[19] Jun. 18, 2021  
Maturity date [7],[19] Jun. 18, 2026  
Principal, Shares, Units [7],[19] $ 4,373,103  
Amortized cost [1],[7],[19] 4,339,971  
Fair value [2],[7],[19] $ 4,373,103  
Percentage of net assets [7],[19] 1.80%  
Investment, Identifier [Axis]: Coop Home Goods LLC (dba Coop Home Goods) First Lien Senior Secured Term Loan SOFR Spread 8.26% Interest Rate 13.59% Due 6/18/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11],[19]   star:CoopHomeGoodsLLCDbaCoopHomeGoodsFirstLienSeniorSecuredTermLoanSOFRSpread826InterestRate1359Due6182026Member
Investment, Significant Unobservable Input [true false] [11],[19]   true
Basis spread on variable rate [10],[11],[19]   8.26%
Interest Rate [11],[19]   13.59%
Acquisition date [11],[19]   Jun. 18, 2021
Maturity date [11],[19]   Jun. 18, 2026
Principal, Shares, Units [11],[19]   $ 4,387,729
Amortized cost [1],[11],[19]   4,335,754
Fair value [2],[11],[19]   $ 4,365,790
Percentage of net assets [11],[19]   2.30%
Investment, Identifier [Axis]: CorTech, LLC Second Lien Senior Secured Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 6,155,951 $ 6,359,542
Amortized cost [1] 6,148,061 6,305,249
Fair value [2] $ 6,034,048 $ 6,059,372
Percentage of net assets 2.50% 3.20%
Investment, Identifier [Axis]: CorTech, LLC Second Lien Senior Secured Loan SOFR Spread 6.35% Interest rate 10.66% Due 9/30/2025    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9] star:CorTechLLCSecondLienSeniorSecuredLoanSOFRSpread635InterestRate1066Due9302025Member, star:InvestmentsSecondLienSeniorSecuredLoanMember  
Investment, Significant Unobservable Input [true false] [7] true  
Basis spread on variable rate [7],[10] 6.35%  
Interest Rate [7] 10.66%  
Acquisition date [7] Mar. 13, 2020  
Maturity date [7] Sep. 30, 2025  
Principal, Shares, Units [7] $ 6,155,951  
Amortized cost [1],[7] 6,148,061  
Fair value [2],[7] $ 6,034,048  
Percentage of net assets [7] 2.50%  
Investment, Identifier [Axis]: CorTech, LLC Second Lien Senior Secured Loan SOFR Spread 6.35% Interest rate 11.68% Due 9/30/2025    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11]   star:CorTechLLCSecondLienSeniorSecuredLoanSOFRSpread635InterestRate1168Due9302025Member
Investment, Significant Unobservable Input [true false] [11]   true
Basis spread on variable rate [10],[11]   6.35%
Interest Rate [11]   11.68%
Acquisition date [11]   Mar. 13, 2020
Maturity date [11]   Sep. 30, 2025
Principal, Shares, Units [11]   $ 6,359,542
Amortized cost [1],[11]   6,305,249
Fair value [2],[11]   $ 6,059,372
Percentage of net assets [11]   3.20%
Investment, Identifier [Axis]: DCCM, LLC First Lien Senior Secured Term Loan Acquisition Date 8/6/2021    
Investments [Abstract]    
Investment, Significant Unobservable Input [true false] [17]   true
Basis spread on variable rate [10],[17]   0.00%
Interest Rate [17]   0.00%
Acquisition date [17]   Aug. 06, 2021
Principal, Shares, Units [17]   $ 897
Amortized cost [1],[17]   939,949
Fair value [2],[17]   $ 1,045,109
Percentage of net assets [17]   0.50%
Investment, Identifier [Axis]: DCCM, LLC First Lien Senior Secured Term Loan SOFR Spread 6.76% Plus 1.00% PIK Interest Rate 11.07% Cash Plus 1.00% PIK Due 12/30/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9] star:DCCMLLCFirstLienSeniorSecuredTermLoanSOFRSpread676Plus100PIKInterestRate1107CashPlus100PIKDue12302026Member  
Investment, Significant Unobservable Input [true false] [7] true  
Basis spread on variable rate [7],[10] 6.76%  
Paid in Kind Basis Spread Variable Rate [7],[10] 1.00%  
Interest Rate [7] 11.07%  
PIK Interest Rate [7] 1.00%  
Acquisition date [7] Aug. 06, 2021  
Maturity date [7] Dec. 30, 2026  
Principal, Shares, Units [7] $ 18,148,579  
Amortized cost [1],[7] 17,949,974  
Fair value [2],[7] $ 18,232,063  
Percentage of net assets [7] 7.50%  
Investment, Identifier [Axis]: DCCM, LLC Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17] star:DCCMLLCWarrantsAndOtherEquitySecuritiesMember star:DCCMLLCWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false] [17] true  
Basis spread on variable rate [10],[17] 0.00%  
Interest Rate [17] 0.00%  
Acquisition date [17] Aug. 06, 2021  
Principal, Shares, Units [17] $ 897  
Amortized cost [1],[17] 939,949  
Fair value [2],[17] $ 3,501,210  
Percentage of net assets [17] 1.50%  
Investment, Identifier [Axis]: DCCMLLC First Lien Senior Secured Term Loan LIBOR Spread 7.16% Interest Rate 12.49% Due 12/30/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11]   star:DCCMLLCFirstLienSeniorSecuredTermLoanLIBORSpread716InterestRate1167Due12302026Member
Investment, Significant Unobservable Input [true false] [11]   true
Basis spread on variable rate [10],[11]   7.16%
Interest Rate [11]   12.49%
Acquisition date [11]   Aug. 06, 2021
Maturity date [11]   Dec. 30, 2026
Principal, Shares, Units [11]   $ 18,409,233
Amortized cost [1],[11]   18,151,330
Fair value [2],[11]   $ 18,201,208
Percentage of net assets [11]   9.60%
Investment, Identifier [Axis]: Distributors First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:DistributorsFirstLienSeniorSecuredTermLoanMember star:DistributorsFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Distributors First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 14,817,041 $ 14,812,030
Amortized cost [1] 14,323,723 14,299,832
Fair value [2] $ 13,163,459 $ 13,807,774
Percentage of net assets 5.50% 7.20%
Investment, Identifier [Axis]: Diversified Consumer Services First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9]   star:DiversifiedConsumerServicesFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Diversified Consumer Services First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units   $ 15,000,652
Amortized cost [1]   14,905,882
Fair value [2]   $ 15,000,652
Percentage of net assets   7.90%
Investment, Identifier [Axis]: Diversified Consumer Services Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9]   star:DiversifiedConsumerServicesWarrantsAndOtherEquitySecuritiesMember
Investment, Identifier [Axis]: Diversified Consumer Services Warrants and Other Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units   $ 12,693
Amortized cost [1]   0
Fair value [2]   $ 181,524
Percentage of net assets   0.10%
Investment, Identifier [Axis]: Diversified Financials Fund Investments    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:DiversifiedFinancialsFundInvestmentsMember, star:SoftwareWarrantsAndOtherEquitySecuritiesMember star:DiversifiedFinancialsFundInvestmentsMember
Investment, Identifier [Axis]: Diversified Financials Fund Investments Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 2,855,855 $ 2,898,305
Amortized cost [1] 2,898,305 2,898,305
Fair value [2] $ 2,688,619 $ 2,809,327
Percentage of net assets 1.10% 1.50%
Investment, Identifier [Axis]: Diversified Telecommunication Services First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:DiversifiedTelecommunicationServicesFirstLienSeniorSecuredTermLoanMember star:DiversifiedTelecommunicationServicesFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Diversified Telecommunication Services First Lien Senior Secured Term Loan Controlled Investments    
Investments [Abstract]    
Principal, Shares, Units $ 2,443,445  
Amortized cost [1] 2,313,620 $ 1,933,490
Fair value [2] $ 2,438,069 $ 2,244,216
Percentage of net assets 1.00% 1.20%
Investment, Identifier [Axis]: Diversified Telecommunication Services First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 14,104,180 $ 18,707,400
Amortized cost [1] 13,779,867 18,288,764
Fair value [2] $ 13,894,028 $ 18,879,110
Percentage of net assets 5.80% 9.90%
Investment, Identifier [Axis]: Diversified Telecommunication Services Preferred Equity Securities    
Investments [Abstract]    
Investment, Type [Extensible Enumeration] [3],[4],[5],[6],[8],[9]   star:DiversifiedTelecommunicationServicesPreferredEquitySecuritiesMember
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:DiversifiedTelecommunicationServicesPreferredEquitySecuritiesMember star:DiversifiedTelecommunicationServicesPreferredEquitySecuritiesMember
Investment, Identifier [Axis]: Diversified Telecommunication Services Preferred Equity Securities Controlled Investments    
Investments [Abstract]    
Principal, Shares, Units $ 597,907  
Amortized cost [1] 5,237,812 $ 3,591,494
Fair value [2] $ 5,557,021 $ 5,492,119
Percentage of net assets 2.30% 2.90%
Investment, Identifier [Axis]: Diversified Telecommunication Services Preferred Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 3,959,977 $ 4,110,995
Amortized cost [1] 799,597 3,126,990
Fair value [2] $ 907,386 $ 3,065,569
Percentage of net assets 0.40% 1.60%
Investment, Identifier [Axis]: Diversified Telecommunication Services Senior Secured Notes    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:DiversifiedTelecommunicationServicesSeniorSecuredNotesMember  
Investment, Identifier [Axis]: Diversified Telecommunication Services Senior Secured Notes Controlled Investments    
Investments [Abstract]    
Principal, Shares, Units $ 341,103  
Amortized cost [1] 341,103  
Fair value [2] $ 341,103  
Percentage of net assets 0.10%  
Investment, Identifier [Axis]: Diversified Telecommunication Services Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:DiversifiedTelecommunicationServicesWarrantsAndOtherEquitySecuritiesMember star:DiversifiedTelecommunicationServicesWarrantsAndOtherEquitySecuritiesMember
Investment, Identifier [Axis]: Diversified Telecommunication Services Warrants and Other Equity Securities Controlled Investments    
Investments [Abstract]    
Principal, Shares, Units $ 267,801  
Amortized cost [1] 443,392  
Fair value [2] $ 0  
Percentage of net assets 0.00%  
Investment, Identifier [Axis]: Diversified Telecommunication Services Warrants and Other Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units   $ 77,195
Amortized cost [1]   0
Fair value [2]   $ 582,640
Percentage of net assets   0.30%
Investment, Identifier [Axis]: Douglas Products and Packaging Company, LLC First Lien Senior Secured Term Loan SOFR Spread 6.90% Interest Rate 11.23% Due 9/20/2028    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[12],[19] star:DouglasProductsAndPackagingCompanyLLCFirstLienSeniorSecuredTermLoanSOFRSpread690InterestRate1123Due9202028Member  
Investment, Significant Unobservable Input [true false] [12],[19] true  
Basis spread on variable rate [10],[12],[19] 6.90%  
Interest Rate [12],[19] 11.23%  
Acquisition date [12],[19] Sep. 20, 2023  
Maturity date [12],[19] Sep. 20, 2028  
Principal, Shares, Units [12],[19] $ 14,812,500  
Amortized cost [1],[12],[19] 14,623,342  
Fair value [2],[12],[19] $ 14,812,499  
Percentage of net assets [12],[19] 6.20%  
Investment, Identifier [Axis]: Douglas Products and Packaging Company, LLC First Lien Senior Secured Term Loan SOFR Spread 6.90% PIK Interest rate 12.25%Due 9/20/2028    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[13],[19]   star:DouglasProductsAndPackagingCompanyLLCFirstLienSeniorSecuredTermLoanSOFRSpread690PIKInterestRate1225Due9202028Member
Investment, Significant Unobservable Input [true false] [13],[19]   true
Basis spread on variable rate [10],[13],[19]   6.90%
Interest Rate [13],[19]   12.25%
Acquisition date [13],[19]   Sep. 20, 2023
Maturity date [13],[19]   Sep. 20, 2028
Principal, Shares, Units [13],[19]   $ 14,962,500
Amortized cost [1],[13],[19]   14,538,407
Fair value [2],[13],[19]   $ 14,538,406
Percentage of net assets [13],[19]   7.50%
Investment, Identifier [Axis]: Electrical Equipment First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:ElectricalEquipmentFirstLienSeniorSecuredTermLoanMember star:ElectricalEquipmentFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Electrical Equipment First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 9,362,315 $ 8,521,445
Amortized cost [1] 9,198,337 8,357,466
Fair value [2] $ 5,729,737 $ 6,935,604
Percentage of net assets 2.30% 3.60%
Investment, Identifier [Axis]: Electrical Equipment Senior Unsecured Notes    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9]   star:ElectricalEquipmentSeniorUnsecuredNotesMember
Investment, Identifier [Axis]: Electrical Equipment Senior Unsecured Notes Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:ElectricalEquipmentSeniorUnsecuredNotesLoanMember  
Investment, Identifier [Axis]: Electrical Equipment Senior Unsecured Notes Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 2,155,820 $ 2,067,881
Amortized cost [1] 2,033,098 2,033,098
Fair value [2] $ 0 $ 1,384,446
Percentage of net assets 0.00% 0.70%
Investment, Identifier [Axis]: Electrical Equipment Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:ElectricalEquipmentWarrantsAndOtherEquitySecuritiesMember star:ElectricalEquipmentWarrantsAndOtherEquitySecuritiesMember
Investment, Identifier [Axis]: Electrical Equipment Warrants and Other Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 190,019 $ 190,019
Amortized cost [1] 0 0
Fair value [2] $ 0 $ 0
Percentage of net assets 0.00% 0.00%
Investment, Identifier [Axis]: Entertainment First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:EntertainmentFirstLienSeniorSecuredTermLoanMember star:EntertainmentFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Entertainment First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 17,318,850 $ 17,485,872
Amortized cost [1] 17,146,839 17,257,718
Fair value [2] $ 12,560,124 $ 16,861,825
Percentage of net assets 5.30% 8.80%
Investment, Identifier [Axis]: Entertainment Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:EntertainmentPreferredEquitySecuritiesMember star:EntertainmentPreferredEquitySecuritiesMember
Investment, Identifier [Axis]: Entertainment Preferred Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 1,183 $ 971
Amortized cost [1] 1,134,428 955,843
Fair value [2] $ 1,385,764 $ 1,088,481
Percentage of net assets 0.60% 0.60%
Investment, Identifier [Axis]: Entertainment Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:EntertainmentWarrantsAndOtherEquitySecuritiesMember star:EntertainmentWarrantsAndOtherEquitySecuritiesMember
Investment, Identifier [Axis]: Entertainment Warrants and Other Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 2 $ 2
Amortized cost [1] 43,478 43,478
Fair value [2] $ 371,747 $ 528,569
Percentage of net assets 0.20% 0.30%
Investment, Identifier [Axis]: Food Products First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:FoodProductsFirstLienSeniorSecuredTermLoanMember star:FoodProductsFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Food Products First Lien Senior Secured Term Loan Controlled Investments    
Investments [Abstract]    
Principal, Shares, Units $ 6,930,002  
Amortized cost [1] 6,832,506  
Fair value [2] $ 6,999,302  
Percentage of net assets 2.90%  
Investment, Identifier [Axis]: Food Products First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units   $ 7,146,952
Amortized cost [1]   7,017,250
Fair value [2]   $ 7,146,952
Percentage of net assets   3.80%
Investment, Identifier [Axis]: Food Products Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:FoodProductsPreferredEquitySecuritiesMember star:FoodProductsPreferredEquitySecuritiesMember
Investment, Identifier [Axis]: Food Products Preferred Equity Securities Controlled Investments    
Investments [Abstract]    
Principal, Shares, Units $ 2,829,787  
Amortized cost [1] 2,829,787  
Fair value [2] $ 4,532,872  
Percentage of net assets 1.90%  
Investment, Identifier [Axis]: Food Products Preferred Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units   $ 2,829,787
Amortized cost [1]   2,829,787
Fair value [2]   $ 4,482,681
Percentage of net assets   2.40%
Investment, Identifier [Axis]: Food Products Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:FoodProductsWarrantsAndOtherEquitySecuritiesMember star:FoodProductsWarrantsAndOtherEquitySecuritiesMember
Investment, Identifier [Axis]: Food Products Warrants and Other Equity Securities Controlled Investments    
Investments [Abstract]    
Principal, Shares, Units $ 127,215  
Amortized cost [1] 0  
Fair value [2] $ 76,329  
Percentage of net assets 0.00%  
Investment, Identifier [Axis]: Food Products Warrants and Other Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units   $ 127,215
Amortized cost [1]   0
Fair value [2]   $ 53,021
Percentage of net assets   0.00%
Investment, Identifier [Axis]: Fremont-Wright, LLC First Lien Senior Secured Term Loan SOFR Spread 9.10% Interest Rate 13.43% Due 6/30/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[12] star:FremontWrightLLCFirstLienSeniorSecuredTermLoanSOFRSpread910InterestRate1343Due6302026Member  
Investment, Significant Unobservable Input [true false] [12] true  
Basis spread on variable rate [10],[12] 9.10%  
Interest Rate [12] 13.43%  
Acquisition date [12] Dec. 02, 2020  
Maturity date [12] Jun. 30, 2026  
Principal, Shares, Units [12] $ 4,155,709  
Amortized cost [1],[12] 4,155,654  
Fair value [2],[12] $ 4,155,709  
Percentage of net assets [12] 1.70%  
Investment, Identifier [Axis]: Fremont-Wright, LLC First Lien Senior Secured Term Loan SOFR Spread 9.10% Interest Rate 14.45% Due 12/2/2024    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[13]   star:FremontWrightLLCFirstLienSeniorSecuredTermLoanSOFRSpread910InterestRate1445Due1222024Member
Investment, Significant Unobservable Input [true false] [13]   true
Basis spread on variable rate [10],[13]   9.10%
Interest Rate [13]   14.45%
Acquisition date [13]   Dec. 02, 2020
Maturity date [13]   Dec. 02, 2024
Principal, Shares, Units [13]   $ 4,258,824
Amortized cost [1],[13]   4,233,922
Fair value [2],[13]   $ 4,246,047
Percentage of net assets [13]   2.20%
Investment, Identifier [Axis]: Fremont-Wright, LLC Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:ConstructionEngineeringWarrantsAndOtherEquitySecuritiesMember, star:FremontWrightLLCWarrantsAndOtherEquitySecuritiesMember star:FremontWrightLLCWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false] true true
Basis spread on variable rate [10] 0.00% 0.00%
Interest Rate 0.00% 0.00%
Acquisition date Dec. 02, 2020 Dec. 02, 2020
Principal, Shares, Units $ 2 $ 2
Amortized cost [1] 0 0
Fair value [2] $ 972,068 $ 894,453
Percentage of net assets 0.40% 0.50%
Investment, Identifier [Axis]: Fund Investments    
Investments [Abstract]    
Investment, Type [Extensible Enumeration] [3],[4],[5],[6],[8],[9] Fund Investments [Member] Fund Investments [Member]
Investment, Identifier [Axis]: Fund Investments Non-Affiliate Investments    
Investments [Abstract]    
Amortized cost [1] $ 2,898,305 $ 2,898,305
Fair value [2] $ 2,688,619 $ 2,809,327
Percentage of net assets 1.10% 1.50%
Investment, Identifier [Axis]: Gateway Dealer Network, LLC First Lien Senior Secured Term Loan SOFR Spread 7.85% Interest Rate 13.20% Due 6/30/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[13],[19]   star:GatewayDealerNetworkLLCFirstLienSeniorSecuredTermLoanSOFRSpread785InterestRate1320Due6302027Member, star:USBidIncFirstLienSeniorSecuredTermLoanSOFRSpread726InterestRate1259Due1132027Member
Investment, Significant Unobservable Input [true false] [13],[19]   true
Basis spread on variable rate [10],[13],[19]   7.85%
Interest Rate [13],[19]   13.20%
Acquisition date [13],[19]   Jun. 30, 2022
Maturity date [13],[19]   Jun. 30, 2027
Principal, Shares, Units [13],[19]   $ 8,594,363
Amortized cost [1],[13],[19]   8,494,408
Fair value [2],[13],[19]   $ 8,594,363
Percentage of net assets [13],[19]   4.50%
Investment, Identifier [Axis]: Gridsource Holdings, LLC Preferred Equity Securities Interest Rate 8.00% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17] star:GridsourceHoldingsLLCPreferredEquitySecuritiesInterestRate800PIKMember star:GridsourceHoldingsLLCPreferredEquitySecuritiesInterestRate800PIKMember
Investment, Significant Unobservable Input [true false] [17] true true
Basis spread on variable rate [10],[17] 0.00% 0.00%
Interest Rate [17]   8.00%
PIK Interest Rate [17] 8.00%  
Acquisition date [17] Mar. 09, 2023 Mar. 09, 2023
Principal, Shares, Units [17] $ 3,959,977 $ 3,959,977
Amortized cost [1],[17] 799,597 799,597
Fair value [2],[17] $ 907,386 $ 1,138,860
Percentage of net assets [17] 0.40% 0.60%
Investment, Identifier [Axis]: Gridsource Incorporated, LLC First Lien Senior Secured Term Loan SOFR Spread 8.50% Interest Rate 13.83% Due 12/16/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11]   star:GridsourceIncorporatedLLCSeniorSecuredTermLoanSOFRSpread850InterestRate1383Due12162027Member
Investment, Significant Unobservable Input [true false] [11]   true
Basis spread on variable rate [10],[11]   8.50%
Interest Rate [11]   13.83%
Acquisition date [11]   Dec. 16, 2022
Maturity date [11]   Dec. 16, 2027
Principal, Shares, Units [11]   $ 14,074,595
Amortized cost [1],[11]   13,688,488
Fair value [2],[11]   $ 14,246,305
Percentage of net assets [11]   7.50%
Investment, Identifier [Axis]: Gridsource Incorporated, LLC First Lien Senior Secured Term Loan SOFR Spread 8.50% Plus 2.00% Interest Rate 12.81% Cash Plus 2.00% Due 3/9/2028    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9] star:GridsourceIncorporatedLLCFirstLienSeniorSecuredTermLoanSOFRSpread850Plus200InterestRate1281CashPlus200Due392028Member  
Investment, Significant Unobservable Input [true false] [7] true  
Basis spread on variable rate [7],[10] 8.50%  
Paid in Kind Basis Spread Variable Rate [7],[10] 2.00%  
Interest Rate [7] 12.81%  
PIK Interest Rate [7] 2.00%  
Acquisition date [7] Dec. 16, 2022  
Maturity date [7] Mar. 09, 2028  
Principal, Shares, Units [7] $ 14,104,180  
Amortized cost [1],[7] 13,779,867  
Fair value [2],[7] $ 13,894,028  
Percentage of net assets [7] 5.80%  
Investment, Identifier [Axis]: HH Masterwork Intermediate, Inc. Senior Unsecured Notes Interest Rate 17.00% PIK Due 5/17/2028    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9]   star:HHMasterworkIntermediateIncSeniorUnsecuredNotesInterestRate1700PIKDue5172028Member
Investment, Significant Unobservable Input [true false]   true
Basis spread on variable rate [10]   0.00%
Interest Rate   17.00%
Acquisition date   Nov. 17, 2022
Maturity date   May 17, 2028
Principal, Shares, Units   $ 2,067,881
Amortized cost [1]   2,033,098
Fair value [2]   $ 1,384,446
Percentage of net assets   0.70%
Investment, Identifier [Axis]: HH Masterwork Intermediate, Inc. Senior Unsecured Notes Loan Interest rate 17.00% PIK Due 5/17/2028    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[21],[24] star:HHMasterworkIntermediateIncSeniorUnsecuredNotesLoanInterestRate1700PIKDue5172028Member  
Investment, Significant Unobservable Input [true false] [21],[24] true  
Basis spread on variable rate [10],[21],[24] 0.00%  
PIK Interest Rate [21],[24] 17.00%  
Acquisition date [21],[24] Nov. 17, 2022  
Maturity date [21],[24] May 17, 2028  
Principal, Shares, Units [21],[24] $ 2,155,820  
Amortized cost [1],[21],[24] 2,033,098  
Fair value [2],[21],[24] $ 0  
Percentage of net assets [21],[24] 0.00%  
Investment, Identifier [Axis]: HH Masterwork Intermediate, Inc. Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[21] star:HHMasterworkIntermediateIncWarrantsAndOtherEquitySecuritiesMember  
Investment, Significant Unobservable Input [true false] [21] true  
Basis spread on variable rate [10],[21] 0.00%  
Interest Rate [21] 0.00%  
Acquisition date [21] Nov. 17, 2022  
Principal, Shares, Units [21] $ 190,019  
Amortized cost [1],[21] 0  
Fair value [2],[21] $ 0  
Percentage of net assets [21] 0.00%  
Investment, Identifier [Axis]: HH Masterwork Intermediate, Inc. Warrants and Other Equity Securities Due 11/17/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9]   star:HHMasterworkIntermediateIncWarrantsAndOtherEquitySecuritiesDue11172027Member
Investment, Significant Unobservable Input [true false]   true
Basis spread on variable rate [10]   0.00%
Interest Rate   0.00%
Acquisition date   Nov. 17, 2022
Maturity date   Nov. 17, 2027
Principal, Shares, Units   $ 190,019
Amortized cost [1]   0
Fair value [2]   $ 0
Percentage of net assets   0.00%
Investment, Identifier [Axis]: Healthcare Providers & Services First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:HealthcareProvidersServicesFirstLienSeniorSecuredTermLoanMember star:HealthcareProvidersServicesFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Healthcare Providers & Services First Lien Senior Secured Term Loan Controlled Investments    
Investments [Abstract]    
Principal, Shares, Units $ 797,086  
Amortized cost [1] 782,429 $ 780,141
Fair value [2] $ 701,117 $ 748,782
Percentage of net assets 0.30% 0.40%
Investment, Identifier [Axis]: Healthcare Providers & Services First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 41,144,175 $ 41,706,570
Amortized cost [1] 40,138,814 40,467,121
Fair value [2] $ 38,083,197 $ 38,978,762
Percentage of net assets 15.80% 20.40%
Investment, Identifier [Axis]: Healthcare Providers & Services Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:HealthcareProvidersServicesPreferredEquitySecuritiesMember star:HealthcareProvidersServicesPreferredEquitySecuritiesMember
Investment, Identifier [Axis]: Healthcare Providers & Services Preferred Equity Securities Controlled Investments    
Investments [Abstract]    
Principal, Shares, Units $ 627,085  
Amortized cost [1] 620,326 $ 620,326
Fair value [2] $ 263,386 $ 314,107
Percentage of net assets 0.10% 0.20%
Investment, Identifier [Axis]: Healthcare Providers & Services Preferred Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 1,953 $ 2,643
Amortized cost [1] 2,029,287 1,997,838
Fair value [2] $ 1,918,048 $ 2,854,468
Percentage of net assets 0.80% 1.50%
Investment, Identifier [Axis]: Healthcare Providers & Services Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:HealthcareProvidersServicesWarrantsAndOtherEquitySecuritiesMember star:HealthcareProvidersServicesWarrantsAndOtherEquitySecuritiesMember
Investment, Identifier [Axis]: Healthcare Providers & Services Warrants and Other Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 1,185 $ 1,185
Amortized cost [1] 419,877 419,877
Fair value [2] $ 196,856 $ 428,568
Percentage of net assets 0.10% 0.20%
Investment, Identifier [Axis]: Hometown Holdings JV, LLC (dba BWG Strategy) Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16],[17] star:HometownHoldingsJVLLCDbaBWGStrategyPreferredEquitySecuritiesMember  
Investment, Significant Unobservable Input [true false] [16],[17] true  
Basis spread on variable rate [10],[16],[17] 0.00%  
Interest Rate [16],[17] 0.00%  
Acquisition date [16],[17] Dec. 24, 2020  
Principal, Shares, Units [16],[17] $ 666,667  
Amortized cost [1],[16],[17] 659,761  
Fair value [2],[16],[17] $ 877,600  
Percentage of net assets [16],[17] 0.40%  
Investment, Identifier [Axis]: Hometown Holdings JV, LLC (dba BWG Strategy) Preferred Equity Securities Interest Rate 8.00% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16],[17]   star:HometownHoldingsJVLLCDbaBWGStrategyPreferredEquitySecuritiesInterestRate800PIKMember
Investment, Significant Unobservable Input [true false] [16],[17]   true
Basis spread on variable rate [10],[16],[17]   0.00%
Interest Rate [16],[17]   8.00%
Acquisition date [16],[17]   Dec. 24, 2020
Principal, Shares, Units [16],[17]   $ 666,667
Amortized cost [1],[16],[17]   676,799
Fair value [2],[16],[17]   $ 820,533
Percentage of net assets [16],[17]   0.40%
Investment, Identifier [Axis]: Hotels Restaurants Leisure First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 4,928,571 $ 4,978,992
Amortized cost [1] 4,819,417 4,839,259
Fair value [2] $ 4,876,329 $ 4,876,922
Percentage of net assets 2.00% 2.60%
Investment, Identifier [Axis]: Hotels, Restaurants & Leisure First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:HotelsRestaurantsLeisureFirstLienSeniorSecuredTermLoanMember star:HotelsRestaurantsLeisureFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Hotels, Restaurants & Leisure Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:HotelsRestaurantsLeisureWarrantsAndOtherEquitySecuritiesMember star:HotelsRestaurantsLeisureWarrantsAndOtherEquitySecuritiesMember
Investment, Identifier [Axis]: Hotels, Restaurants & Leisure Warrants and Other Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 21,210 $ 21,210
Amortized cost [1] 71,599 71,599
Fair value [2] $ 34,623 $ 32,606
Percentage of net assets 0.00% 0.00%
Investment, Identifier [Axis]: Household Durables First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:HouseholdDurablesFirstLienSeniorSecuredTermLoanMember star:HouseholdDurablesFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Household Durables First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 4,597,307 $ 4,683,036
Amortized cost [1] 4,534,757 4,618,637
Fair value [2] $ 3,057,209 $ 2,341,518
Percentage of net assets 1.30% 1.20%
Investment, Identifier [Axis]: Household Durables Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9]   star:HouseholdDurablesWarrantsAndOtherEquitySecuritiesMember
Investment, Identifier [Axis]: Household Durables Warrants and Other Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units   $ 1,846,180
Amortized cost [1]   0
Fair value [2]   $ 0
Percentage of net assets   0.00%
Investment, Identifier [Axis]: Household Products First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:HouseholdProductsFirstLienSeniorSecuredTermLoanMember star:HouseholdProductsFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Household Products First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[19] star:CoopHomeGoodsLLCDbaCoopHomeGoodsFirstLienSeniorSecuredTermLoanSOFRSpread826InterestRate1257Due6182026Member  
Principal, Shares, Units $ 4,373,103 $ 4,387,729
Amortized cost [1] 4,339,971 4,335,754
Fair value [2] $ 4,373,103 $ 4,365,790
Percentage of net assets 1.80% 2.30%
Investment, Identifier [Axis]: Household Products Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:HouseholdProductsWarrantsAndOtherEquitySecuritiesMember star:HouseholdProductsWarrantsAndOtherEquitySecuritiesMember
Investment, Identifier [Axis]: Household Products Warrants and Other Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 535,714 $ 535,714
Amortized cost [1] 535,714 535,714
Fair value [2] $ 617,857 $ 99,286
Percentage of net assets 0.30% 0.10%
Investment, Identifier [Axis]: IPA Intermediate Co., LLC (dba Integrated Pain Associates)First Lien Senior Secured Term Loan SOFR Spread 8.01% Interest Rate 12.32% Due 1/9/2028    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9] star:IPAIntermediateCoLLCDbaIntegratedPainAssociatesFirstLienSeniorSecuredTermLoanSOFRSpread801InterestRate1232Due192028Member  
Investment, Significant Unobservable Input [true false] [7] true  
Basis spread on variable rate [7],[10] 8.01%  
Interest Rate [7] 12.32%  
Acquisition date [7] Jan. 09, 2023  
Maturity date [7] Jan. 09, 2028  
Principal, Shares, Units [7] $ 11,096,086  
Amortized cost [1],[7] 10,864,449  
Fair value [2],[7] $ 11,096,086  
Percentage of net assets [7] 4.60%  
Investment, Identifier [Axis]: IPA Intermediate Co., LLC (dba Integrated Pain Associates)First Lien Senior Secured Term Loan SOFR Spread 8.01% Interest Rate 13.34% Due 1/9/2028    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11]   star:IPAIntermediateCoLLCDbaIntegratedPainAssociatesFirstLienSeniorSecuredTermLoanSOFRSpread801InterestRate1334Due192028Member
Investment, Significant Unobservable Input [true false] [11]   true
Basis spread on variable rate [10],[11]   8.01%
Interest Rate [11]   13.34%
Acquisition date [11]   Jan. 09, 2023
Maturity date [11]   Jan. 09, 2028
Principal, Shares, Units [11]   $ 11,209,312
Amortized cost [1],[11]   10,930,921
Fair value [2],[11]   $ 10,930,921
Percentage of net assets [11]   5.70%
Investment, Identifier [Axis]: IPA Investors, LP Preferred Equity Securities Interest Rate 8.00% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17] star:IPAInvestorsLPPreferredEquitySecuritiesInterestRate800PIKMember star:IPAInvestorsLPPreferredEquitySecuritiesInterestRate800PIKMember
Investment, Significant Unobservable Input [true false] [17] true true
Basis spread on variable rate [10],[17] 0.00% 0.00%
Interest Rate [17]   8.00%
PIK Interest Rate [17] 8.00%  
Acquisition date [17] Jan. 09, 2023 Jan. 09, 2023
Principal, Shares, Units [17] $ 1,953 $ 2,643
Amortized cost [1],[17] 2,029,287 1,997,838
Fair value [2],[17] $ 1,918,048 $ 2,854,468
Percentage of net assets [17] 0.80% 1.50%
Investment, Identifier [Axis]: IT Services First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:ITServicesFirstLienSeniorSecuredTermLoanMember star:ITServicesFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: IT Services First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 12,558,929 $ 18,687,526
Amortized cost [1] 12,433,640 18,368,354
Fair value [2] $ 12,558,929 $ 18,406,891
Percentage of net assets 5.20% 9.60%
Investment, Identifier [Axis]: Investments First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Type [Extensible Enumeration] [3],[4],[5],[6],[8],[9] Investments First Lien Senior Secured Term Loan [Member] Investments First Lien Senior Secured Term Loan [Member]
Investment, Identifier [Axis]: Investments First Lien Senior Secured Term Loan Controlled Investments    
Investments [Abstract]    
Amortized cost [1] $ 23,642,127 $ 2,713,631
Fair value [2] $ 23,544,908 $ 2,992,998
Percentage of net assets 9.70% 1.60%
Investment, Identifier [Axis]: Investments First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Amortized cost [1] $ 292,946,300 $ 329,578,557
Fair value [2] $ 280,575,134 $ 316,236,011
Percentage of net assets 116.40% 165.60%
Investment, Identifier [Axis]: Investments Second Lien Senior Secured Loan    
Investments [Abstract]    
Investment, Type [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:InvestmentsSecondLienSeniorSecuredLoanMember star:InvestmentsSecondLienSeniorSecuredLoanMember
Investment, Identifier [Axis]: Investments Second Lien Senior Secured Loan Non-Affiliate Investments    
Investments [Abstract]    
Amortized cost [1] $ 6,148,061 $ 6,305,249
Fair value [2] $ 6,034,048 $ 6,059,372
Percentage of net assets 2.50% 3.20%
Investment, Identifier [Axis]: JCFV Holdings, LLC Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17] star:JCFVHoldingsLLCPreferredEquitySecuritiesMember  
Investment, Significant Unobservable Input [true false] [17] true  
Basis spread on variable rate [10],[17] 0.00%  
Interest Rate [17] 0.00%  
Acquisition date [17] Jul. 01, 2024  
Principal, Shares, Units [17] $ 415,916  
Amortized cost [1],[17] 1,538,462  
Fair value [2],[17] $ 1,538,462  
Percentage of net assets [17] 0.60%  
Investment, Identifier [Axis]: Japonesque, LLC First Lien Senior Secured Term Loan SOFR Spread 8.18% Interest Rate 12.49% Due 11/23/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[19] star:ChickenSoupForTheSoulLLCFirstLienSeniorSecuredTermLoanSOFRSpread860InterestRate1293Due3312024Member, star:FremontWrightLLCFirstLienSeniorSecuredTermLoanSOFRSpread910InterestRate1343Due6302026Member, star:JaponesqueLLCFirstLienSeniorSecuredTermLoanSOFRSpread818InterestRate1249Due11232026Member, star:LindenResearchIncDbaLindenLabsFirstLienSeniorSecuredTermLoanSOFRSpread726Plus325PIKInterestRate1157Plus325PIKDue12312025Member, star:MechanAirLLCFirstLienSeniorSecuredTermLoanSOFRSpread1800PIKDue922026Member, star:PadSquadLLCFirstLienSeniorSecuredTermLoanSOFRSpread550InterestRate981Due3302027Member, star:TexasContractManufacturingGroupIncFirstLienSeniorSecuredTermLoanSOFRSpread1211InterestRate1642Due4272027Member, star:VersarIncFirstLienSeniorSecuredTermLoanSOFRSpread810InterestRate1241Due842028Member, star:VerticalMechanicalGroupLLCFirstLienSeniorSecuredTermLoanSOFRSpread776InterestRate1207Due5122028Member  
Investment, Significant Unobservable Input [true false] [7],[19] true  
Basis spread on variable rate [7],[10],[19] 8.18%  
Interest Rate [7],[19] 12.49%  
Acquisition date [7],[19] Nov. 23, 2021  
Maturity date [7],[19] Nov. 23, 2026  
Principal, Shares, Units [7],[19] $ 4,404,301  
Amortized cost [1],[7],[19] 4,360,968  
Fair value [2],[7],[19] $ 4,404,301  
Percentage of net assets [7],[19] 1.80%  
Investment, Identifier [Axis]: Japonesque, LLC First Lien Senior Secured Term Loan SOFR Spread S8.18% Cash 1.50% PIK Interest rate 13.51% Cash 1.50% PIK Due 11/23/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11],[19]   star:JaponesqueLLCFirstLienSeniorSecuredTermLoanSOFRSpreadS818Cash150PIKInterestRate1351Cash150PIKDue11232026Member
Investment, Significant Unobservable Input [true false] [11],[19]   true
Basis spread on variable rate [10],[11],[19]   8.18%
Paid in Kind Basis Spread Variable Rate [10],[11],[19]   1.50%
Interest Rate [11],[19]   13.51%
PIK Interest Rate [11],[19]   1.50%
Acquisition date [11],[19]   Nov. 23, 2021
Maturity date [11],[19]   Nov. 23, 2026
Principal, Shares, Units [11],[19]   $ 4,525,012
Amortized cost [1],[11],[19]   4,451,581
Fair value [2],[11],[19]   $ 4,457,979
Percentage of net assets [11],[19]   2.30%
Investment, Identifier [Axis]: Jefferson Consulting Group, LLC First Lien Senior Secured Term Loan SOFR Spread 5.75% Interest Rate 10.06% Due 7/1/2029    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[19] star:JeffersonConsultingGroupLLCFirstLienSeniorSecuredTermLoanSOFRSpread575InterestRate1006Due712029Member  
Investment, Significant Unobservable Input [true false] [7],[19] true  
Basis spread on variable rate [7],[10],[19] 5.75%  
Interest Rate [7],[19] 10.06%  
Acquisition date [7],[19] Jul. 01, 2024  
Maturity date [7],[19] Jul. 01, 2029  
Principal, Shares, Units [7],[19] $ 8,461,538  
Amortized cost [1],[7],[19] 8,303,804  
Fair value [2],[7],[19] $ 8,303,804  
Percentage of net assets [7],[19] 3.40%  
Investment, Identifier [Axis]: Kelso Industries First Lien Senior Secured Term Loan SOFR Spread 5.75% Interest Rate 10.06% Due 12/30/2029    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[14] star:KelsoIndustriesFirstLienSeniorSecuredTermLoanSOFRSpread575InterestRate1006Due12302029Member  
Investment, Significant Unobservable Input [true false] [7],[14] true  
Basis spread on variable rate [7],[10],[14] 5.75%  
Interest Rate [7],[14] 10.06%  
Acquisition date [7],[14] Dec. 31, 2024  
Maturity date [7],[14] Dec. 30, 2029  
Principal, Shares, Units [7],[14] $ 13,000,000  
Amortized cost [1],[7],[14] 12,740,177  
Fair value [2],[7],[14] $ 12,740,177  
Percentage of net assets [7],[14] 5.30%  
Investment, Identifier [Axis]: Klein Hersh, LLC First Lien Senior Secured Term Loan SOFR Spread 7.76% Interest Rate 4.49% Due 4/27/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[19] star:KleinHershLLCFirstLienSeniorSecuredTermLoanSOFRSpread776InterestRate449Due4272027Member  
Investment, Significant Unobservable Input [true false] [7],[19] true  
Basis spread on variable rate [7],[10],[19] 7.76%  
Interest Rate [7],[19] 4.49%  
Acquisition date [7],[19] Apr. 27, 2022  
Maturity date [7],[19] Apr. 27, 2027  
Principal, Shares, Units [7],[19] $ 17,468,922  
Amortized cost [1],[7],[19] 16,895,893  
Fair value [2],[7],[19] $ 14,530,649  
Percentage of net assets [7],[19] 6.00%  
Investment, Identifier [Axis]: Klein Hersh, LLC First Lien Senior Secured Term Loan SOFR Spread 7.76% Interest Rate 4.63% Cash Plus 8.47% PIK Due 4/27/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11],[19]   star:KleinHershLLCFirstLienSeniorSecuredTermLoanSOFRSpread776InterestRate463CashPlus847PIKDue4272027Member
Investment, Significant Unobservable Input [true false] [11],[19]   true
Basis spread on variable rate [10],[11],[19]   7.76%
Interest Rate [11],[19]   4.63%
PIK Interest Rate [11],[19]   8.47%
Acquisition date [11],[19]   Apr. 27, 2022
Maturity date [11],[19]   Apr. 27, 2027
Principal, Shares, Units [11],[19]   $ 16,438,829
Amortized cost [1],[11],[19]   15,808,872
Fair value [2],[11],[19]   $ 14,188,353
Percentage of net assets [11],[19]   7.40%
Investment, Identifier [Axis]: Klein Hersh, LLC Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:KleinHershLLCWarrantsAndOtherEquitySecuritiesMember star:KleinHershLLCWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false] true true
Basis spread on variable rate [10] 0.00% 0.00%
Interest Rate 0.00% 0.00%
Acquisition date Apr. 27, 2022 Apr. 27, 2022
Principal, Shares, Units $ 1,003 $ 1,003
Amortized cost [1] 0 0
Fair value [2] $ 0 $ 0
Percentage of net assets 0.00% 0.00%
Investment, Identifier [Axis]: LRI Holdco, LLC (dba Linden Labs) Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17] star:LRIHoldcoLLCDbaLindenLabsWarrantsAndOtherEquitySecuritiesMember star:LRIHoldcoLLCDbaLindenLabsWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false] [17] true true
Basis spread on variable rate [10],[17] 0.00% 0.00%
Interest Rate [17] 0.00% 0.00%
Acquisition date [17] Dec. 31, 2020 Dec. 31, 2020
Principal, Shares, Units [17] $ 2 $ 2
Amortized cost [1],[17] 43,478 43,478
Fair value [2],[17] $ 371,747 $ 528,569
Percentage of net assets [17] 0.20% 0.30%
Investment, Identifier [Axis]: Lasalle Staffing, LLC First Lien Senior Secured Term Loan SOFR Spread 6.86% Interest Rate 11.19% Due 2/15/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[12],[15],[19] star:LasalleStaffingLLCFirstLienSeniorSecuredTermLoanSOFRSpread686InterestRate1119Due2152027Member  
Investment, Significant Unobservable Input [true false] [12],[15],[19] true  
Basis spread on variable rate [10],[12],[15],[19] 6.86%  
Interest Rate [12],[15],[19] 11.19%  
Acquisition date [12],[15],[19] Feb. 15, 2022  
Maturity date [12],[15],[19] Feb. 15, 2027  
Principal, Shares, Units [12],[15],[19] $ 7,250,785  
Amortized cost [1],[12],[15],[19] 7,154,058  
Fair value [2],[12],[15],[19] $ 7,287,039  
Percentage of net assets [12],[15],[19] 3.00%  
Investment, Identifier [Axis]: Lasalle Staffing, LLC First Lien Senior Secured Term Loan SOFR Spread 6.86% Interest Rate 12.21% Due 2/15/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[19]   star:LasalleStaffingLLCFirstLienSeniorSecuredTermLoanSOFRSpread686InterestRate1221Due2152027Member
Investment, Significant Unobservable Input [true false] [19]   true
Basis spread on variable rate [10],[19]   6.86%
Interest Rate [19]   12.21%
Acquisition date [19]   Feb. 15, 2022
Maturity date [19]   Feb. 15, 2027
Principal, Shares, Units [19]   $ 7,461,888
Amortized cost [1],[19]   7,332,377
Fair value [2],[19]   $ 7,499,198
Percentage of net assets [19]   3.90%
Investment, Identifier [Axis]: Leisure Products First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:LeisureProductsFirstLienSeniorSecuredTermLoanMember star:LeisureProductsFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Leisure Products First Lien Senior Secured Term Loan Controlled Investments    
Investments [Abstract]    
Principal, Shares, Units $ 1,570,577  
Amortized cost [1] 1,560,737  
Fair value [2] $ 1,448,543  
Percentage of net assets 0.60%  
Investment, Identifier [Axis]: Leisure Products First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units   $ 4,226,371
Amortized cost [1]   4,163,215
Fair value [2]   $ 3,852,760
Percentage of net assets   2.00%
Investment, Identifier [Axis]: Leisure Products Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:LeisureProductsPreferredEquitySecuritiesMember star:LeisureProductsPreferredEquitySecuritiesMember
Investment, Identifier [Axis]: Leisure Products Preferred Equity Securities Controlled Investments    
Investments [Abstract]    
Principal, Shares, Units $ 157  
Amortized cost [1] 3,889,050  
Fair value [2] $ 1,782,334  
Percentage of net assets 0.70%  
Investment, Identifier [Axis]: Leisure Products Preferred Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units   $ 13
Amortized cost [1]   564,645
Fair value [2]   $ 0
Percentage of net assets   0.00%
Investment, Identifier [Axis]: Linden Research, Inc. (dba Linden Labs) First Lien Senior Secured Term Loan SOFR Spread 7.26% Plus 3.25% PIK Interest Rate 11.57% Plus 3.25 PIK Due 12/31/2025    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[19] star:LindenResearchIncDbaLindenLabsFirstLienSeniorSecuredTermLoanSOFRSpread726Plus325PIKInterestRate1157Plus325PIKDue12312025Member  
Investment, Significant Unobservable Input [true false] [7],[19] true  
Basis spread on variable rate [7],[10],[19] 7.26%  
Paid in Kind Basis Spread Variable Rate [7],[10],[19] 3.25%  
Interest Rate [7],[19] 11.57%  
PIK Interest Rate [7],[19] 3.25%  
Acquisition date [7],[19] Dec. 31, 2020  
Maturity date [7],[19] Dec. 31, 2025  
Principal, Shares, Units [7],[19] $ 4,702,225  
Amortized cost [1],[7],[19] 4,630,079  
Fair value [2],[7],[19] $ 4,702,225  
Percentage of net assets [7],[19] 2.00%  
Investment, Identifier [Axis]: Linden Research, Inc. (dba Linden Labs)First Lien Senior Secured Term Loan SOFR Spread 7.26% Cash Plus 3.25% PIK Interest Rate 12.59% Cash Plus 3.25% PIK Due 12/31/2025    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11],[19]   star:LindenResearchIncDbaLindenLabsFirstLienSeniorSecuredTermLoanSOFRSpread726CashPlus325PIKInterestRate1259CashPlus325PIKDue12312025Member
Investment, Significant Unobservable Input [true false] [11],[19]   true
Basis spread on variable rate [10],[11],[19]   7.26%
Paid in Kind Basis Spread Variable Rate [10],[11],[19]   3.25%
Interest Rate [11],[19]   12.59%
PIK Interest Rate [11],[19]   3.25%
Acquisition date [11],[19]   Dec. 31, 2020
Maturity date [11],[19]   Dec. 31, 2025
Principal, Shares, Units [11],[19]   $ 4,738,655
Amortized cost [1],[11],[19]   4,634,407
Fair value [2],[11],[19]   $ 4,738,655
Percentage of net assets [11],[19]   2.50%
Investment, Identifier [Axis]: Lockstep Holdings, LLC First Lien Senior Secured Term Loan SOFR Spread 6.75% Interest Rate 12.08% Due 7/3/2028    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11],[19]   star:LockstepHoldingsLLCFirstLienSeniorSecuredTermLoanSOFRSpread675InterestRate1208Due732028Member
Investment, Significant Unobservable Input [true false] [11],[19]   true
Basis spread on variable rate [10],[11],[19]   6.75%
Interest Rate [11],[19]   12.08%
Acquisition date [11],[19]   Jul. 03, 2023
Maturity date [11],[19]   Jul. 03, 2028
Principal, Shares, Units [11],[19]   $ 5,357,714
Amortized cost [1],[11],[19]   5,228,599
Fair value [2],[11],[19]   $ 5,210,377
Percentage of net assets [11],[19]   2.70%
Investment, Identifier [Axis]: MPUSA, LLC (dba Mission) First Lien Senior Secured Term Loan SOFR Spread 11.26% Interest Rate 13.59% Cash Plus 3.00% PIK13.27% Due 12/9/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11]   star:MPUSALLCDbaMissionFirstLienSeniorSecuredTermLoanSOFRSpread1126InterestRate1359CashPlus300PIK1327Due1292026Member
Investment, Significant Unobservable Input [true false] [11]   true
Basis spread on variable rate [10],[11]   11.26%
Interest Rate [11]   13.59%
PIK Interest Rate [11]   3.00%
Acquisition date [11]   Dec. 09, 2021
Maturity date [11]   Dec. 09, 2026
Principal, Shares, Units [11]   $ 4,226,371
Amortized cost [1],[11]   4,163,215
Fair value [2],[11]   $ 3,852,760
Percentage of net assets [11]   2.00%
Investment, Identifier [Axis]: MPUSA, LLC (dba Mission) First Lien Senior Secured Term Loan SOFR Spread 8.26% Cash Plus 3.00% PIK Interest Rate 12.57% Cash Plus 3.00% PIK Due 12/9/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[15] star:MPUSALLCDbaMissionFirstLienSeniorSecuredTermLoanSOFRSpread826CashPlus300PIKInterestRate1257CashPlus300PIKDue1292026Member  
Investment, Significant Unobservable Input [true false] [7],[15] true  
Basis spread on variable rate [7],[10],[15] 8.26%  
Paid in Kind Basis Spread Variable Rate [7],[10],[15] 3.00%  
Interest Rate [7],[15] 12.57%  
PIK Interest Rate [7],[15] 3.00%  
Acquisition date [7],[15] Dec. 09, 2021  
Maturity date [7],[15] Dec. 09, 2026  
Principal, Shares, Units [7],[15] $ 1,570,577  
Amortized cost [1],[7],[15] 1,560,737  
Fair value [2],[7],[15] $ 1,448,543  
Percentage of net assets [7],[15] 0.60%  
Investment, Identifier [Axis]: MPUSA, LLC (dba Mission) Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17]   star:MPUSALLCDbaMissionPreferredEquitySecuritiesMember
Investment, Significant Unobservable Input [true false] [17]   true
Basis spread on variable rate [10],[17]   0.00%
Interest Rate [17]   0.00%
Acquisition date [17]   Dec. 09, 2021
Principal, Shares, Units [17]   $ 13
Amortized cost [1],[17]   564,645
Fair value [2],[17]   $ 0
Percentage of net assets [17]   0.00%
Investment, Identifier [Axis]: Machinery First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:MachineryFirstLienSeniorSecuredTermLoanMember star:MachineryFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Machinery First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 4,605,541 $ 4,909,896
Amortized cost [1] 4,547,261 4,832,798
Fair value [2] $ 3,968,595 $ 4,196,979
Percentage of net assets 1.60% 2.20%
Investment, Identifier [Axis]: Machinery Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:MachineryWarrantsAndOtherEquitySecuritiesMember star:MachineryWarrantsAndOtherEquitySecuritiesMember
Investment, Identifier [Axis]: Machinery Warrants and Other Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 1,602 $ 1,602
Amortized cost [1] 0 0
Fair value [2] $ 249,355 $ 490,323
Percentage of net assets 0.10% 0.30%
Investment, Identifier [Axis]: Madryn Select Opportunities, LP Fund Investments    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:MadrynSelectOpportunitiesLPFundInvestmentsMember [14] star:MadrynSelectOpportunitiesLPFundInvestmentsMember [22]
Investment, Significant Unobservable Input [true false] true [14] true [22]
Basis spread on variable rate [10] 0.00% [14] 0.00% [22]
Interest Rate 0.00% [14] 0.00% [22]
Acquisition date Jan. 04, 2022 [14] Jan. 04, 2022 [22]
Principal, Shares, Units $ 2,855,855 [14] $ 2,898,305 [22]
Amortized cost [1] 2,898,305 [14] 2,898,305 [22]
Fair value [2] $ 2,688,619 [14] $ 2,809,327 [22]
Percentage of net assets 1.10% [14] 1.50% [22]
Investment, Identifier [Axis]: Masterwork Electronics First Lien Senior Secured Term Loan SOFR Spread 7.65% Interest Rate 12.24% PIK Due 11/17/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[21],[24] star:MasterworkElectronicsIncFirstLienSeniorSecuredTermLoanSOFRSpread765InterestRate1196PIKDue11172027Member  
Investment, Significant Unobservable Input [true false] [7],[21],[24] true  
Basis spread on variable rate [7],[10],[21],[24] 7.65%  
Interest Rate [7],[21],[24] 11.96%  
Acquisition date [7],[21],[24] Nov. 17, 2022  
Maturity date [7],[21],[24] Nov. 17, 2027  
Principal, Shares, Units [7],[21],[24] $ 8,840,576  
Amortized cost [1],[7],[21],[24] 8,676,598  
Fair value [2],[7],[21],[24] $ 5,410,433  
Percentage of net assets [7],[21],[24] 2.20%  
Investment, Identifier [Axis]: Masterwork Electronics, Inc. First Lien Senior Secured Term Loan SOFR Spread 7.65% Interest Rate 12.24% PIK Due 11/17/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[21],[24],[27] star:MasterworkElectronicsIncFirstLienSeniorSecuredTermLoanSOFRSpread765InterestRate1196PIKDue11172027OneMember  
Investment, Significant Unobservable Input [true false] [7],[21],[24],[27] true  
Basis spread on variable rate [7],[10],[21],[24],[27] 7.65%  
Interest Rate [7],[21],[24],[27] 11.96%  
Acquisition date [7],[21],[24],[27] Nov. 17, 2022  
Maturity date [7],[21],[24],[27] Nov. 17, 2027  
Principal, Shares, Units [7],[21],[24],[27] $ 521,739  
Amortized cost [1],[7],[21],[24],[27] 521,739  
Fair value [2],[7],[21],[24],[27] $ 319,304  
Percentage of net assets [7],[21],[24],[27] 0.10%  
Investment, Identifier [Axis]: Masterwork Electronics, Inc. First Lien Senior Secured Term Loan SOFR Spread 9.50% Interest Rate 14.83% PIK Due 11/17/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11]   star:MasterworkElectronicsIncSeniorSecuredTermLoanSOFRSpread950InterestRate1483PIKDue11172027Member
Investment, Significant Unobservable Input [true false] [11]   true
Basis spread on variable rate [10],[11]   9.50%
Interest Rate [11]   14.83%
Acquisition date [11]   Nov. 17, 2022
Maturity date [11]   Nov. 17, 2027
Principal, Shares, Units [11]   $ 8,521,445
Amortized cost [1],[11]   8,357,466
Fair value [2],[11]   $ 6,935,604
Percentage of net assets [11]   3.60%
Investment, Identifier [Axis]: MechanAir Holdings, LLC Preferred Equity Securities Interest Rate 13.50% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16],[17] star:MechanAirHoldingsLLCPreferredEquitySecuritiesInterestRate1350PIKMember star:MechanAirHoldingsLLCPreferredEquitySecuritiesInterestRate1350PIKMember
Investment, Significant Unobservable Input [true false] [16],[17] true true
Basis spread on variable rate [10],[16],[17] 0.00% 0.00%
Interest Rate [16],[17]   13.50%
PIK Interest Rate [16],[17] 13.50%  
Acquisition date [16],[17] Sep. 02, 2021 Sep. 02, 2021
Principal, Shares, Units [16],[17] $ 1,704 $ 1,219
Amortized cost [1],[16],[17] 1,703,499 1,219,441
Fair value [2],[16],[17] $ 2,193,365 $ 0
Percentage of net assets [16],[17] 0.90% 0.00%
Investment, Identifier [Axis]: MechanAir, LLC First Lien Senior Secured Term Loan SOFR Spread 10.80% Interest Rate 10.57% Plus 4.53% PIK Due 9/2/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9] star:MechanAirLLCFirstLienSeniorSecuredTermLoanSOFRSpread1080InterestRate1057Plus453PIKDue922026Member  
Investment, Significant Unobservable Input [true false] [7] true  
Basis spread on variable rate [7],[10] 10.80%  
Interest Rate [7] 10.57%  
PIK Interest Rate [7] 4.53%  
Acquisition date [7] Sep. 02, 2021  
Maturity date [7] Sep. 02, 2026  
Principal, Shares, Units [7] $ 13,203,004  
Amortized cost [1],[7] 13,072,674  
Fair value [2],[7] $ 13,203,004  
Percentage of net assets [7] 5.50%  
Investment, Identifier [Axis]: MechanAir, LLC First Lien Senior Secured Term Loan SOFR Spread 10.80% Interest Rate 11.29% Cash 4.84% PIK Due 9/2/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11]   star:MechanAirLLCFirstLienSeniorSecuredTermLoanSOFRSpread1080InterestRate1129Cash484PIKDue922026Member
Investment, Significant Unobservable Input [true false] [11]   true
Basis spread on variable rate [10],[11]   10.80%
Interest Rate [11]   11.29%
PIK Interest Rate [11]   4.84%
Acquisition date [11]   Sep. 02, 2021
Maturity date [11]   Sep. 02, 2026
Principal, Shares, Units [11]   $ 11,006,971
Amortized cost [1],[11]   10,846,083
Fair value [2],[11]   $ 10,616,224
Percentage of net assets [11]   5.60%
Investment, Identifier [Axis]: MechanAir, LLC First Lien Senior Secured Term Loan SOFR Spread 12.30% Interest Rate 17.63% PIK Due 9/2/2026MechanAir, LLC First Lien Senior Secured Term Loan SOFR Spread 12.30% Interest Rate 17.63% PIK Due 9/2/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11]   star:MechanAirLLCFirstLienSeniorSecuredTermLoanSOFRSpread1230InterestRate1763PIKDue922026MechanAirLLCFirstLienSeniorSecuredTermLoanSOFRSpread1230InterestRate1763PIKDue922026Member
Investment, Significant Unobservable Input [true false] [11]   true
Basis spread on variable rate [10],[11]   12.30%
Interest Rate [11]   17.63%
Acquisition date [11]   Dec. 15, 2023
Maturity date [11]   Sep. 02, 2026
Principal, Shares, Units [11]   $ 710,054
Amortized cost [1],[11]   710,054
Fair value [2],[11]   $ 0
Percentage of net assets [11]   0.00%
Investment, Identifier [Axis]: MechanAir, LLC First Lien Senior Secured Term Loan SOFR Spread 18.00% PIK Due 9/2/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16] star:MechanAirLLCFirstLienSeniorSecuredTermLoanSOFRSpread1800PIKDue922026Member  
Investment, Significant Unobservable Input [true false] [16] true  
Basis spread on variable rate [10],[16] 0.00%  
Interest Rate [16] 18.00%  
Acquisition date [16] Dec. 15, 2023  
Maturity date [16] Sep. 02, 2026  
Principal, Shares, Units [16] $ 509,104  
Amortized cost [1],[16] 509,104  
Fair value [2],[16] $ 504,726  
Percentage of net assets [16] 0.20%  
Investment, Identifier [Axis]: MechanAir, LLC First Lien Senior Secured Term Loan SOFR Spread Interest Rate 18.00% PIK Due 9/2/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16]   star:MechanAirLLCFirstLienSeniorSecuredTermLoanSOFRSpreadInterestRate1800PIKDue922026Member
Investment, Significant Unobservable Input [true false] [16]   true
Basis spread on variable rate [10],[16]   0.00%
Interest Rate [16]   18.00%
Acquisition date [16]   Dec. 15, 2023
Maturity date [16]   Sep. 02, 2026
Principal, Shares, Units [16]   $ 426,099
Amortized cost [1],[16]   426,099
Fair value [2],[16]   $ 0
Percentage of net assets [16]   0.00%
Investment, Identifier [Axis]: Media First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:MediaFirstLienSeniorSecuredTermLoanMember star:MediaFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Media First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 17,495,108 $ 19,022,302
Amortized cost [1] 17,248,937 18,733,268
Fair value [2] $ 17,221,475 $ 18,700,248
Percentage of net assets 7.10% 9.90%
Investment, Identifier [Axis]: Media Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:MediaPreferredEquitySecuritiesMember star:MediaPreferredEquitySecuritiesMember
Investment, Identifier [Axis]: Media Preferred Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 3,515,344 $ 3,515,344
Amortized cost [1] 4,847,503 4,847,503
Fair value [2] $ 9,704,567 $ 7,170,030
Percentage of net assets 4.00% 3.90%
Investment, Identifier [Axis]: Microf, LLC First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units   $ 3,427,073
Amortized cost [1]   3,407,754
Fair value [2]   $ 3,427,073
Percentage of net assets   1.80%
Investment, Identifier [Axis]: Microf, LLC First Lien Senior Secured Term Loan SOFR Spread 10.85% Interest Rate 16.18% Due 6/30/2025    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11]   star:MicrofLLCSeniorSecuredTermLoanSOFRSpread1085InterestRate1618Due6302025Member
Investment, Significant Unobservable Input [true false] [11]   true
Basis spread on variable rate [10],[11]   10.85%
Interest Rate [11]   16.18%
Acquisition date [11]   Mar. 29, 2019
Maturity date [11]   Jun. 30, 2025
Principal, Shares, Units [11]   $ 3,427,073
Amortized cost [1],[11]   3,407,754
Fair value [2],[11]   $ 3,427,073
Percentage of net assets [11]   1.80%
Investment, Identifier [Axis]: Microf, LLC Preferred Equity Securities Interest Rate 15.00% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[15],[21] star:MicrofLLCPreferredEquitySecuritiesInterestRate1500PIKMember  
Investment, Significant Unobservable Input [true false] [15],[21] true  
Basis spread on variable rate [10],[15],[21] 0.00%  
PIK Interest Rate [15],[21] 15.00%  
Acquisition date [15],[21] May 05, 2020  
Principal, Shares, Units [15],[21] $ 0  
Amortized cost [1],[15],[21] 0  
Fair value [2],[15],[21] $ 0  
Percentage of net assets [15],[21] 0.00%  
Investment, Identifier [Axis]: Microf, LLC Senior Unsecured Notes SOFR Spread 10.85% Interest Rate 15.16% Due 6/30/2025    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[15],[21] star:MicrofLLCSeniorUnsecuredNotesSOFRSpread1085InterestRate1516Due6302025Member  
Investment, Significant Unobservable Input [true false] [15],[21] true  
Basis spread on variable rate [10],[15],[21] 10.85%  
Interest Rate [15],[21] 15.16%  
Acquisition date [15],[21] Mar. 29, 2019  
Maturity date [15],[21] Jun. 30, 2025  
Principal, Shares, Units [15],[21] $ 3,427,073  
Amortized cost [1],[15],[21] 3,427,073  
Fair value [2],[15],[21] $ 3,427,073  
Percentage of net assets [15],[21] 1.40%  
Investment, Identifier [Axis]: Microf, LLC Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9]   star:MicrofLLCWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]   true
Basis spread on variable rate [10]   0.00%
Interest Rate   0.00%
Acquisition date   May 05, 2020
Principal, Shares, Units   $ 164,332
Amortized cost [1]   0
Fair value [2]   $ 190,807
Percentage of net assets   0.10%
Investment, Identifier [Axis]: NSC Holdings, LLC Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17] star:NSCHoldingsLLCWarrantsAndOtherEquitySecuritiesMember star:NSCHoldingsLLCWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false] [17] true true
Basis spread on variable rate [10],[17] 0.00% 0.00%
Interest Rate [17] 0.00% 0.00%
Acquisition date [17] Apr. 26, 2019 Apr. 26, 2019
Principal, Shares, Units [17] $ 111 $ 111
Amortized cost [1],[17] 271,262 271,262
Fair value [2],[17] $ 290,774 $ 296,715
Percentage of net assets [17] 0.10% 0.20%
Investment, Identifier [Axis]: NSC Technologies, LLC First Lien Senior Secured Term Loan SOFR Spread 7.76% Interest Rate 13.09% Due 10/26/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11]   star:NSCTechnologiesLLCFirstLienSeniorSecuredTermLoanSOFRSpread776InterestRate1309Due10262026Member
Investment, Significant Unobservable Input [true false] [11]   true
Basis spread on variable rate [10],[11]   7.76%
Interest Rate [11]   13.09%
Acquisition date [11]   Apr. 26, 2019
Maturity date [11]   Oct. 26, 2026
Principal, Shares, Units [11]   $ 4,148,472
Amortized cost [1],[11]   4,139,598
Fair value [2],[11]   $ 4,148,472
Percentage of net assets [11]   2.20%
Investment, Identifier [Axis]: NSC Technologies, LLC First Lien Senior Secured Term Loan SOFR Spread 8.26% Interest Rate 12.57% Due 10/26/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[19] star:NSCTechnologiesLLCFirstLienSeniorSecuredTermLoanSOFRSpread826InterestRate1257Due10262026Member  
Investment, Significant Unobservable Input [true false] [7],[19] true  
Basis spread on variable rate [7],[10],[19] 8.26%  
Interest Rate [7],[19] 12.57%  
Acquisition date [7],[19] Apr. 26, 2019  
Maturity date [7],[19] Oct. 26, 2026  
Principal, Shares, Units [7],[19] $ 4,148,472  
Amortized cost [1],[7],[19] 4,121,315  
Fair value [2],[7],[19] $ 4,117,773  
Percentage of net assets [7],[19] 1.70%  
Investment, Identifier [Axis]: NW Entertainment, LLC First Lien Senior Secured Term Loan SOFR Spread 7.76% Interest Rate 12.07% Due 11/4/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9] star:NWEntertainmentLLCFirstLienSeniorSecuredTermLoanSOFRSpread776InterestRate1207Due1142027Member  
Investment, Significant Unobservable Input [true false] [7] true  
Basis spread on variable rate [7],[10] 7.76%  
Interest Rate [7] 12.07%  
Acquisition date [7] Nov. 04, 2022  
Maturity date [7] Nov. 04, 2027  
Principal, Shares, Units [7] $ 6,235,769  
Amortized cost [1],[7] 6,135,904  
Fair value [2],[7] $ 6,175,905  
Percentage of net assets [7] 2.60%  
Investment, Identifier [Axis]: NW Entertainment, LLC First Lien Senior Secured Term Loan SOFR Spread 7.76% Interest Rate 13.09% Due 11/4/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11]   star:NWEntertainmentLLCFirstLienSeniorSecuredTermLoanSOFRSpread776InterestRate1309Due1142027Member
Investment, Significant Unobservable Input [true false] [11]   true
Paid in Kind Basis Spread Variable Rate [10],[11]   7.76%
Interest Rate [11]   13.09%
Acquisition date [11]   Nov. 04, 2022
Maturity date [11]   Nov. 04, 2027
Principal, Shares, Units [11]   $ 6,366,361
Amortized cost [1],[11]   6,254,950
Fair value [2],[11]   $ 6,366,361
Percentage of net assets [11]   3.30%
Investment, Identifier [Axis]: NW Entertainment, LLC Preferred Equity Securities Interest Rate 10.00% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17] star:NWEntertainmentLLCPreferredEquitySecuritiesInterestRate1000PIKMember star:NWEntertainmentLLCPreferredEquitySecuritiesInterestRate1000PIKMember
Investment, Significant Unobservable Input [true false] [17] true true
Basis spread on variable rate [10],[17] 0.00% 0.00%
Interest Rate [17]   10.00%
PIK Interest Rate [17] 10.00%  
Acquisition date [17] Nov. 04, 2022 Nov. 04, 2022
Principal, Shares, Units [17] $ 1,183 $ 971
Amortized cost [1],[17] 1,134,428 955,843
Fair value [2],[17] $ 1,385,764 $ 1,088,481
Percentage of net assets [17] 0.60% 0.60%
Investment, Identifier [Axis]: Non-Affiliate Investments    
Investments [Abstract]    
Investment, Issuer Affiliation [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:InvestmentUnaffiliatedIssuersMember star:InvestmentUnaffiliatedIssuersMember
Amortized cost [1] $ 325,265,220 $ 370,712,305
Fair value [2] $ 326,959,520 $ 367,622,559
Percentage of net assets 135.70% 192.90%
Investment, Identifier [Axis]: Nurses 24/7 Holdings, LLC Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17] star:Nurses247HoldingsLLCWarrantsAndOtherEquitySecuritiesMember  
Investment, Significant Unobservable Input [true false] [17] true  
Basis spread on variable rate [10],[17] 0.00%  
Interest Rate [17] 0.00%  
Acquisition date [17] May 26, 2023  
Principal, Shares, Units [17] $ 182  
Amortized cost [1],[17] 419,877  
Fair value [2],[17] $ 196,856  
Percentage of net assets [17] 0.10%  
Investment, Identifier [Axis]: Nurses Staffing, LLC Warrants and Other Equity Securities Due 5/26/2023    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17]   star:NursesStaffingLLCWarrantsAndOtherEquitySecuritiesDue5262023Member
Investment, Significant Unobservable Input [true false] [17]   true
Basis spread on variable rate [10],[17]   0.00%
Interest Rate [17]   0.00%
Acquisition date [17]   May 26, 2023
Principal, Shares, Units [17]   $ 182
Amortized cost [1],[17]   419,877
Fair value [2],[17]   $ 428,568
Percentage of net assets [17]   0.20%
Investment, Identifier [Axis]: PPC Event Services, Inc. First Lien Senior Secured Term Loan SOFR Spread 6.76% Interest Rate 12.09% Due 9/22/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11],[22]   star:PPCEventServicesIncFirstLienSeniorSecuredTermLoanSOFRSpread676InterestRate1135Due9222027Member, star:PPCEventServicesIncFirstLienSeniorSecuredTermLoanSOFRSpread676InterestRate1209Due9222027Member
Investment, Significant Unobservable Input [true false] [11],[22]   true
Basis spread on variable rate [10],[11],[22]   6.76%
Interest Rate [11],[22]   12.09%
Acquisition date [11],[22]   Sep. 22, 2022
Maturity date [11],[22]   Sep. 22, 2027
Principal, Shares, Units [11],[22]   $ 7,273,693
Amortized cost [1],[11],[22]   7,199,328
Fair value [2],[11],[22]   $ 7,273,693
Percentage of net assets [11],[22]   3.70%
Investment, Identifier [Axis]: PQT Ayaquhs, LLC (dba WWC Global) First Lien Senior Secured Term Loan SOFR Spread 7.26% Interest Rate 11.78% Due 8/1/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9] star:PQTAyaquhsLLCDbaWWCGlobalFirstLienSeniorSecuredTermLoanSOFRSpread726InterestRate1178Due812027Member  
Investment, Significant Unobservable Input [true false] [7] true  
Basis spread on variable rate [7],[10] 7.26%  
Interest Rate [7] 11.78%  
Acquisition date [7] Aug. 01, 2022  
Maturity date [7] Aug. 01, 2027  
Principal, Shares, Units [7] $ 7,409,274  
Amortized cost [1],[7] 7,311,194  
Fair value [2],[7] $ 7,483,367  
Percentage of net assets [7] 3.10%  
Investment, Identifier [Axis]: PQT Ayaquhs, LLC (dba WWC Global) First Lien Senior Secured Term Loan SOFR Spread 7.76% Interest Rate 13.09% Due 8/1/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11]   star:PQTAyaquhsLLCDbaWWCGlobalFirstLienSeniorSecuredTermLoanSOFRSpread776InterestRate1309Due812027Member
Investment, Significant Unobservable Input [true false] [11]   true
Basis spread on variable rate [10],[11]   7.76%
Interest Rate [11]   13.09%
Acquisition date [11]   Aug. 01, 2022
Maturity date [11]   Aug. 01, 2027
Principal, Shares, Units [11]   $ 7,606,855
Amortized cost [1],[11]   7,481,063
Fair value [2],[11]   $ 7,606,855
Percentage of net assets [11]   4.00%
Investment, Identifier [Axis]: PQT Ayaquhs, LLC (dba WWC Global) Preferred Equity Securities Interest Rate 10.50% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16],[17] star:PQTAyaquhsLLCDbaWWCGlobalPreferredEquitySecuritiesInterestRate1050PIKMember star:PQTAyaquhsLLCDbaWWCGlobalPreferredEquitySecuritiesInterestRate1050PIKMember
Investment, Significant Unobservable Input [true false] [16],[17] true true
Basis spread on variable rate [10],[16],[17] 0.00% 0.00%
Interest Rate [16],[17]   10.50%
PIK Interest Rate [16],[17] 10.50%  
Acquisition date [16],[17] Aug. 01, 2022 Aug. 01, 2022
Principal, Shares, Units [16],[17] $ 5,774 $ 5,774
Amortized cost [1],[16],[17] 1,064,516 1,064,516
Fair value [2],[16],[17] $ 4,528,036 $ 3,821,290
Percentage of net assets [16],[17] 1.80% 2.00%
Investment, Identifier [Axis]: PQT Ayaquhs, LLC (dba WWC Global) Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:PQTAyaquhsLLCDbaWWCGlobalWarrantsAndOtherEquitySecuritiesMember star:PQTAyaquhsLLCDbaWWCGlobalWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false] true true
Basis spread on variable rate [10] 0.00% 0.00%
Interest Rate 0.00% 0.00%
Acquisition date Aug. 01, 2022 Aug. 01, 2022
Principal, Shares, Units $ 645 $ 645
Amortized cost [1] 0 0
Fair value [2] $ 353,135 $ 311,613
Percentage of net assets 0.10% 0.20%
Investment, Identifier [Axis]: PadSquad Holdings LLC Preferred Equity Securities Interest Rate 6.00% Plus 6.00% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16],[17] star:PadSquadHoldingsLLCDbaPadsquadPreferredEquitySecuritiesInterestRate600Plus600PIKMember star:PadSquadHoldingsLLCDbaPadsquadPreferredEquitySecuritiesInterestRate600Plus600PIKMember
Investment, Significant Unobservable Input [true false] [16],[17] true true
Basis spread on variable rate [10],[16],[17] 0.00% 0.00%
Interest Rate [16],[17] 6.00% 6.00%
PIK Interest Rate [16],[17] 6.00% 6.00%
Acquisition date [16],[17] Mar. 30, 2022 Mar. 30, 2022
Principal, Shares, Units [16],[17] $ 720,767 $ 720,767
Amortized cost [1],[16],[17] 1,964,204 1,964,204
Fair value [2],[16],[17] $ 3,379,270 $ 2,206,343
Percentage of net assets [16],[17] 1.40% 1.20%
Investment, Identifier [Axis]: PadSquad, LLC First Lien Senior Secured Term Loan SOFR Spread 5.50% Interest Rate 9.81% Due 3/30/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[19] star:PadSquadLLCFirstLienSeniorSecuredTermLoanSOFRSpread550InterestRate981Due3302027Member  
Investment, Significant Unobservable Input [true false] [7],[19] true  
Basis spread on variable rate [7],[10],[19] 5.50%  
Interest Rate [7],[19] 9.81%  
Acquisition date [7],[19] Mar. 30, 2022  
Maturity date [7],[19] Mar. 30, 2027  
Principal, Shares, Units [7],[19] $ 2,704,113  
Amortized cost [1],[7],[19] 2,676,832  
Fair value [2],[7],[19] $ 2,704,113  
Percentage of net assets [7],[19] 1.10%  
Investment, Identifier [Axis]: PadSquad, LLC First Lien Senior Secured Term Loan SOFR Spread 9.00% Interest Rate 14.33% Due 3/30/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11]   star:PadSquadLLCFirstLienSeniorSecuredTermLoanSOFRSpread900InterestRate1433Due3302027Member
Investment, Significant Unobservable Input [true false] [11]   true
Basis spread on variable rate [10],[11]   9.00%
Interest Rate [11]   14.33%
Acquisition date [11]   Mar. 30, 2022
Maturity date [11]   Mar. 30, 2027
Principal, Shares, Units [11]   $ 4,549,341
Amortized cost [1],[11]   4,488,472
Fair value [2],[11]   $ 4,482,011
Percentage of net assets [11]   2.40%
Investment, Identifier [Axis]: Personal Products First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:PersonalProductsFirstLienSeniorSecuredTermLoanMember star:PersonalProductsFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Personal Products First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 4,404,301 $ 4,525,012
Amortized cost [1] 4,360,968 4,451,581
Fair value [2] $ 4,404,301 $ 4,457,979
Percentage of net assets 1.80% 2.30%
Investment, Identifier [Axis]: Preferred Equity Securities    
Investments [Abstract]    
Investment, Type [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[28],[29] Preferred Equity Securities [Member] Preferred Equity Securities [Member]
Investment, Identifier [Axis]: Preferred Equity Securities Controlled Investments    
Investments [Abstract]    
Amortized cost [1] $ 25,056,679 $ 4,211,820
Fair value [2] $ 23,291,385 $ 5,806,226
Percentage of net assets 9.70% 3.10%
Investment, Identifier [Axis]: Preferred Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Amortized cost [1] $ 18,084,821 $ 27,472,732
Fair value [2] $ 30,311,671 $ 35,998,169
Percentage of net assets 12.50% 19.10%
Investment, Identifier [Axis]: Proactive Dealer Holdings Parent, LLC Preferred Equity Securities Interest Rate 10.00% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17]   star:ProactiveDealerHoldingsParentLLCPreferredEquitySecuritiesInterestRate1000PIKMember
Investment, Significant Unobservable Input [true false] [17]   true
Basis spread on variable rate [10],[17]   0.00%
Interest Rate [17]   10.00%
Acquisition date [17]   Dec. 27, 2021
Principal, Shares, Units [17]   $ 1,141,205
Amortized cost [1],[17]   1,328,162
Fair value [2],[17]   $ 3,052,404
Percentage of net assets [17]   1.60%
Investment, Identifier [Axis]: Proactive Dealer Holdings Parent, LLC Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17] star:ProactiveDealerHoldingsParentLLCWarrantsAndOtherEquitySecuritiesMember  
Investment, Significant Unobservable Input [true false] [17] true  
Basis spread on variable rate [10],[17] 0.00%  
Interest Rate [17] 0.00%  
Acquisition date [17] Jun. 10, 2024  
Principal, Shares, Units [17] $ 445  
Amortized cost [1],[17] 730,271  
Fair value [2],[17] $ 730,275  
Percentage of net assets [17] 0.40%  
Investment, Identifier [Axis]: Proactive Dealer Solutions, LLC First Lien Senior Secured Term Loan SOFR Spread 10.26% Interest Rate 15.59% Due 12/26/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11]   star:ProactiveDealerSolutionsLLCFirstLienSeniorSecuredTermLoanSOFRSpread1026InterestRate1559Due12262026Member
Investment, Significant Unobservable Input [true false] [11]   true
Basis spread on variable rate [10],[11]   10.26%
Interest Rate [11]   15.59%
Acquisition date [11]   Dec. 27, 2021
Maturity date [11]   Dec. 26, 2026
Principal, Shares, Units [11]   $ 3,074,615
Amortized cost [1],[11]   3,023,230
Fair value [2],[11]   $ 3,074,615
Percentage of net assets [11]   1.60%
Investment, Identifier [Axis]: Professional Services First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:ProfessionalServicesFirstLienSeniorSecuredTermLoanMember star:ProfessionalServicesFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Professional Services First Lien Senior Secured Term Loan Controlled Investments    
Investments [Abstract]    
Principal, Shares, Units $ 7,250,785  
Amortized cost [1] 7,154,058  
Fair value [2] $ 7,287,039  
Percentage of net assets 3.00%  
Investment, Identifier [Axis]: Professional Services First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 29,116,427 $ 19,217,215
Amortized cost [1] 28,529,665 18,953,038
Fair value [2] $ 28,698,296 $ 19,254,525
Percentage of net assets 11.90% 10.10%
Investment, Identifier [Axis]: Professional Services Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:ProfessionalServicesPreferredEquitySecuritiesMember star:ProfessionalServicesPreferredEquitySecuritiesMember
Investment, Identifier [Axis]: Professional Services Preferred Equity Securities Controlled Investments    
Investments [Abstract]    
Principal, Shares, Units $ 4,000,000  
Amortized cost [1] 4,000,000  
Fair value [2] $ 6,700,000  
Percentage of net assets 2.80%  
Investment, Identifier [Axis]: Professional Services Preferred Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 1,088,395 $ 4,672,441
Amortized cost [1] 5,262,739 5,741,315
Fair value [2] $ 8,944,098 $ 10,689,290
Percentage of net assets 3.60% 5.60%
Investment, Identifier [Axis]: Professional Services Second Lien Senior Secured Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:ProfessionalServicesSecondLienSeniorSecuredLoanMember star:ProfessionalServicesSecondLienSeniorSecuredLoanMember
Investment, Identifier [Axis]: Professional Services Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:ProfessionalServicesWarrantsAndOtherEquitySecuritiesMember star:ProfessionalServicesWarrantsAndOtherEquitySecuritiesMember
Investment, Identifier [Axis]: Professional Services Warrants and Other Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 756 $ 756
Amortized cost [1] 271,262 271,262
Fair value [2] $ 643,909 $ 608,328
Percentage of net assets 0.20% 0.40%
Investment, Identifier [Axis]: PureCars Technologies Holdings, LLC Preferred Equity Securities Interest Rate 8.00% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16],[17] star:PureCarsTechnologiesHoldingsLLCPreferredEquitySecuritiesInterestRate800PIKMember star:PureCarsTechnologiesHoldingsLLCPreferredEquitySecuritiesInterestRate800PIKMember
Investment, Significant Unobservable Input [true false] [16],[17] true true
Basis spread on variable rate [10],[16],[17] 0.00% 0.00%
Interest Rate [16],[17]   8.00%
PIK Interest Rate [16],[17] 8.00%  
Acquisition date [16],[17] Apr. 17, 2019 Apr. 17, 2019
Principal, Shares, Units [16],[17] $ 592 $ 514
Amortized cost [1],[16],[17] 267,013 240,065
Fair value [2],[16],[17] $ 234,876 $ 19,192
Percentage of net assets [16],[17] 0.10% 0.00%
Investment, Identifier [Axis]: PureCars Technologies, LLC First Lien Senior Secured Term Loan SOFR Spread 6.35% Cash Plus 1.00% PIK Interest Rate 11.68% Cash Plus 1.00% PIK Due 4/18/2024    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11],[19]   star:PureCarsTechnologiesLLCFirstLienSeniorSecuredTermLoanSOFRSpread635CashPlus100PIKInterestRate1168CashPlus100PIKDue4182024Member
Investment, Significant Unobservable Input [true false] [11],[19]   true
Basis spread on variable rate [10],[11],[19]   6.35%
Paid in Kind Basis Spread Variable Rate [10],[11],[19]   1.00%
Interest Rate [11],[19]   11.68%
PIK Interest Rate [11],[19]   1.00%
Acquisition date [11],[19]   Apr. 17, 2019
Maturity date [11],[19]   Apr. 18, 2024
Principal, Shares, Units [11],[19]   $ 1,471,687
Amortized cost [1],[11],[19]   1,464,114
Fair value [2],[11],[19]   $ 1,418,118
Percentage of net assets [11],[19]   0.70%
Investment, Identifier [Axis]: PureCars Technologies, LLC Preferred Equity Securities Interest Rate 8.00% PIK Due 7/26/2024    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16],[17]   star:PureCarsTechnologiesLLCPreferredEquitySecuritiesInterestRate800PIKDue7262024Member
Investment, Significant Unobservable Input [true false] [16],[17]   true
Basis spread on variable rate [10],[16],[17]   0.00%
Interest Rate [16],[17]   8.00%
Acquisition date [16],[17]   Jul. 25, 2022
Maturity date [16],[17]   Jul. 26, 2024
Principal, Shares, Units [16],[17]   $ 78
Amortized cost [1],[16],[17]   26,948
Fair value [2],[16],[17]   $ 26,528
Percentage of net assets [16],[17]   0.00%
Investment, Identifier [Axis]: Qualified Digital, LLC First Lien Senior Secured Term Loan SOFR Spread 7.00% Interest Rate 11.31% Due 7/30/2029    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[14] star:QualifiedDigitalLLCFirstLienSeniorSecuredTermLoanSOFRSpread700InterestRate1131Due7302029Member  
Investment, Significant Unobservable Input [true false] [7],[14] true  
Basis spread on variable rate [7],[10],[14] 7.00%  
Interest Rate [7],[14] 11.31%  
Acquisition date [7],[14] Jul. 30, 2024  
Maturity date [7],[14] Jul. 30, 2029  
Principal, Shares, Units [7],[14] $ 9,097,143  
Amortized cost [1],[7],[14] 8,793,352  
Fair value [2],[7],[14] $ 8,793,352  
Percentage of net assets [7],[14] 3.70%  
Investment, Identifier [Axis]: Rock Gate Capital, LLC (dba 160 Driving Academy) First Lien Senior Secured Term Loan SOFR Spread 7.50% Interest Rate 12.83% Due 10/16/2024    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11]   star:RockGateCapitalLLCDba160DrivingAcademySeniorSecuredTermLoanSOFRSpread750InterestRate1283Due10162024Member
Investment, Significant Unobservable Input [true false] [11]   true
Basis spread on variable rate [10],[11]   7.50%
Interest Rate [11]   12.83%
Acquisition date [11]   Oct. 16, 2019
Maturity date [11]   Oct. 16, 2024
Principal, Shares, Units [11]   $ 15,000,652
Amortized cost [1],[11]   14,905,882
Fair value [2],[11]   $ 15,000,652
Percentage of net assets [11]   7.90%
Investment, Identifier [Axis]: Rock Gate Capital, LLC (dba 160 Driving Academy) Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9]   star:RockGateCapitalLLCDba160DrivingAcademyWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]   true
Basis spread on variable rate [10]   0.00%
Interest Rate   0.00%
Acquisition date   Oct. 16, 2019
Principal, Shares, Units   $ 12,693
Amortized cost [1]   0
Fair value [2]   $ 181,524
Percentage of net assets   0.10%
Investment, Identifier [Axis]: SPC QD SM, LP Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17] star:SPCQDSMLPPreferredEquitySecuritiesMember  
Investment, Significant Unobservable Input [true false] [17] true  
Basis spread on variable rate [10],[17] 0.00%  
Interest Rate [17] 0.00%  
Acquisition date [17] Jul. 30, 2024  
Principal, Shares, Units [17] $ 38  
Amortized cost [1],[17] 2,000,000  
Fair value [2],[17] $ 2,000,000  
Percentage of net assets [17] 0.80%  
Investment, Identifier [Axis]: Senior Secured Notes    
Investments [Abstract]    
Investment, Type [Extensible Enumeration] [3],[4],[5],[6],[8],[9] Senior Secured Notes [Member]  
Investment, Identifier [Axis]: Senior Secured Notes Controlled Investments    
Investments [Abstract]    
Amortized cost [1] $ 341,103  
Fair value [2] $ 341,103  
Percentage of net assets 0.10%  
Investment, Identifier [Axis]: Senior Unsecured Notes    
Investments [Abstract]    
Investment, Type [Extensible Enumeration] [3],[4],[5],[6],[8],[9] Senior Unsecured Notes [Member] [28] Senior Unsecured Notes [Member]
Investment, Identifier [Axis]: Senior Unsecured Notes Controlled Investments    
Investments [Abstract]    
Amortized cost [1] $ 3,427,073  
Fair value [2] $ 3,427,073  
Percentage of net assets 1.40%  
Investment, Identifier [Axis]: Senior Unsecured Notes Non-Affiliate Investments    
Investments [Abstract]    
Amortized cost [1] $ 2,033,098 $ 2,033,098
Fair value [2] $ 0 $ 1,384,446
Percentage of net assets 0.00% 0.70%
Investment, Identifier [Axis]: SkyBell Technologies, Inc. First Lien Senior Secured Term Loan SOFR Spread 0.00% Cash Plus 0.00% PIK Interest Rate 0.00% Cash Plus 0.00% PIK Due 12/13/2024    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[21],[24] star:SkyBellTechnologiesIncFirstLienSeniorSecuredTermLoanSOFRSpread000CashPlus000PIKInterestRate000CashPlus000PIKDue12132024Member  
Investment, Significant Unobservable Input [true false] [21],[24] true  
Basis spread on variable rate [10],[21],[24] 0.00%  
Paid in Kind Basis Spread Variable Rate [10],[21],[24] 0.00%  
Interest Rate [21],[24] 0.00%  
PIK Interest Rate [21],[24] 0.00%  
Acquisition date [21],[24] Dec. 13, 2019  
Maturity date [21],[24] Dec. 13, 2024  
Principal, Shares, Units [21],[24] $ 4,597,307  
Amortized cost [1],[21],[24] 4,534,757  
Fair value [2],[21],[24] $ 3,057,209  
Percentage of net assets [21],[24] 1.30%  
Investment, Identifier [Axis]: SkyBell Technologies, Inc. First Lien Senior Secured Term Loan SOFR Spread 0.00% Interest Rate 0.00% Due 12/13/2024    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[21],[23]   star:SkyBellTechnologiesIncFirstLienSeniorSecuredTermLoanSOFRSpread000InterestRate000Due12132024Member
Investment, Significant Unobservable Input [true false] [21],[23]   true
Basis spread on variable rate [10],[21],[23]   0.00%
Interest Rate [21],[23]   0.00%
Acquisition date [21],[23]   Dec. 13, 2019
Maturity date [21],[23]   Dec. 13, 2024
Principal, Shares, Units [21],[23]   $ 4,683,036
Amortized cost [1],[21],[23]   4,618,637
Fair value [2],[21],[23]   $ 2,341,518
Percentage of net assets [21],[23]   1.20%
Investment, Identifier [Axis]: SkyBell Technologies, Inc. Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9]   star:SkyBellTechnologiesIncWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]   true
Basis spread on variable rate [10]   0.00%
Interest Rate   0.00%
Acquisition date   Dec. 13, 2019
Principal, Shares, Units   $ 1,846,180
Amortized cost [1]   0
Fair value [2]   $ 0
Percentage of net assets   0.00%
Investment, Identifier [Axis]: Software First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9]   star:SoftwareFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Software First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units   $ 4,546,302
Amortized cost [1]   4,487,344
Fair value [2]   $ 4,492,733
Percentage of net assets   2.30%
Investment, Identifier [Axis]: Software Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:SoftwarePreferredEquitySecuritiesMember star:SoftwarePreferredEquitySecuritiesMember
Investment, Identifier [Axis]: Software Preferred Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 592 $ 1,141,797
Amortized cost [1] 267,013 1,595,175
Fair value [2] $ 234,876 $ 3,098,124
Percentage of net assets 0.10% 1.60%
Investment, Identifier [Axis]: Software Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:SoftwareWarrantsAndOtherEquitySecuritiesMember  
Investment, Identifier [Axis]: Software Warrants and Other Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 445  
Amortized cost [1] 730,271  
Fair value [2] $ 730,275  
Percentage of net assets 0.40%  
Investment, Identifier [Axis]: Specialty Retail First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:SpecialtyRetailFirstLienSeniorSecuredTermLoanMember star:SpecialtyRetailFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Specialty Retail First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 6,703,118 $ 6,452,101
Amortized cost [1] 6,609,366 6,333,920
Fair value [2] $ 6,703,118 $ 6,367,578
Percentage of net assets 2.80% 3.30%
Investment, Identifier [Axis]: Swyft AcquireCo LLC (dba Swyft Filings) First Lien Senior Secured Term Loan SOFR Spread 2.75% Interest Rate 7.08% Due 12/20/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[12],[27] star:SwyftAcquireCoLLCDbaSwyftFilingsFirstLienSeniorSecuredTermLoanSOFRSpread275InterestRate708Due12202027Member  
Investment, Significant Unobservable Input [true false] [12],[27] true  
Basis spread on variable rate [10],[12],[27] 2.75%  
Interest Rate [12],[27] 7.08%  
Acquisition date [12],[27] Dec. 20, 2021  
Maturity date [12],[27] Dec. 20, 2027  
Principal, Shares, Units [12],[27] $ 292,443  
Amortized cost [1],[12],[27] 291,514  
Fair value [2],[12],[27] $ 288,290  
Percentage of net assets [12],[27] 0.10%  
Investment, Identifier [Axis]: Swyft AcquireCo LLC (dba Swyft Filings) First Lien Senior Secured Term Loan SOFR Spread 2.75% Interest Rate 8.10% Due 12/20/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[13],[30]   star:SwyftAcquireCoLLCDbaSwyftFilingsFirstLienSeniorSecuredTermLoanSOFRSpread275InterestRate810Due12202027Member
Investment, Significant Unobservable Input [true false] [13],[30]   true
Basis spread on variable rate [10],[13],[30]   2.75%
Interest Rate [13],[30]   8.10%
Acquisition date [13],[30]   Dec. 20, 2021
Maturity date [13],[30]   Dec. 20, 2027
Principal, Shares, Units [13],[30]   $ 299,236
Amortized cost [1],[13],[30]   295,384
Fair value [2],[13],[30]   $ 297,441
Percentage of net assets [13],[30]   0.20%
Investment, Identifier [Axis]: Swyft AcquireCo LLC (dba Swyft Filings) First Lien Senior Secured Term Loan SOFR Spread 5.50% Interest Rate 10.85% Due 12/20/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[13],[19]   star:SwyftAcquireCoLLCDbaSwyftFilingsFirstLienSeniorSecuredTermLoanSOFRSpread550InterestRate1085Due12202027Member, star:SwyftAcquireCoLLCDbaSwyftFilingsFirstLienSeniorSecuredTermLoanSOFRSpread550InterestRate986Due12202027Member
Investment, Significant Unobservable Input [true false] [13],[19]   true
Basis spread on variable rate [10],[13],[19]   5.50%
Interest Rate [13],[19]   10.85%
Acquisition date [13],[19]   Dec. 20, 2021
Maturity date [13],[19]   Dec. 20, 2027
Principal, Shares, Units [13],[19]   $ 3,682,383
Amortized cost [1],[13],[19]   3,633,920
Fair value [2],[13],[19]   $ 3,483,902
Percentage of net assets [13],[19]   1.80%
Investment, Identifier [Axis]: Swyft AcquireCo LLC (dba Swyft Filings) First Lien Senior Secured Term Loan SOFR Spread 5.50% Interest Rate 9.83% Due 12/20/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[12],[19] star:SwyftAcquireCoLLCDbaSwyftFilingsFirstLienSeniorSecuredTermLoanSOFRSpread550InterestRate983Due12202027Member  
Investment, Significant Unobservable Input [true false] [12],[19] true  
Basis spread on variable rate [10],[12],[19] 5.50%  
Interest Rate [12],[19] 9.83%  
Acquisition date [12],[19] Dec. 20, 2021  
Maturity date [12],[19] Dec. 20, 2027  
Principal, Shares, Units [12],[19] $ 3,682,383  
Amortized cost [1],[12],[19] 3,643,596  
Fair value [2],[12],[19] $ 3,425,353  
Percentage of net assets [12],[19] 1.40%  
Investment, Identifier [Axis]: Swyft Filings Holdings, LLC Preferred Equity Securities Interest Rate 8.00% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16],[17],[31] star:SwyftFilingsHoldingsLLCPreferredEquitySecuritiesInterestRate800PIKMember star:SwyftFilingsHoldingsLLCPreferredEquitySecuritiesInterestRate800PIKMember
Investment, Significant Unobservable Input [true false] [16],[17],[31] true true
Basis spread on variable rate [10],[16],[17],[31] 0.00% 0.00%
Interest Rate [16],[17],[31]   8.00%
PIK Interest Rate [16],[17],[31] 8.00%  
Acquisition date [16],[17],[31] Dec. 20, 2021 Dec. 20, 2021
Principal, Shares, Units [16],[17],[31] $ 192,444 $ 192,444
Amortized cost [1],[16],[17],[31] 183,612 183,612
Fair value [2],[16],[17],[31] $ 194,996 $ 227,311
Percentage of net assets [16],[17],[31] 0.10% 0.10%
Investment, Identifier [Axis]: TCP Acquisition, LLC (dba HighStar Traffic) First Lien Senior Secured Term Loan SOFR Spread 7.50% Interest Rate 11.81% Due 7/26/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9] star:TCPAcquisitionLLCDbaHighStarTrafficFirstLienSeniorSecuredTermLoanSOFRSpread750InterestRate1181Due7262027Member  
Investment, Significant Unobservable Input [true false] [7] true  
Basis spread on variable rate [7],[10] 7.50%  
Interest Rate [7] 11.81%  
Acquisition date [7] Jul. 26, 2022  
Maturity date [7] Jul. 26, 2027  
Principal, Shares, Units [7] $ 10,339,453  
Amortized cost [1],[7] 10,193,719  
Fair value [2],[7] $ 10,339,453  
Percentage of net assets [7] 4.30%  
Investment, Identifier [Axis]: TCP Acquisition, LLC (dba HighStar Traffic) First Lien Senior Secured Term Loan SOFR Spread 7.50% Interest Rate 12.83% Due 7/26/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11],[22]   star:TCPAcquisitionLLCDbaHighStarTrafficFirstLienSeniorSecuredTermLoanSOFRSpread750InterestRate1283Due7262027Member
Investment, Significant Unobservable Input [true false] [11],[22]   true
Basis spread on variable rate [10],[11],[22]   7.50%
Interest Rate [11],[22]   12.83%
Acquisition date [11],[22]   Jul. 26, 2022
Maturity date [11],[22]   Jul. 26, 2027
Principal, Shares, Units [11],[22]   $ 10,676,188
Amortized cost [1],[11],[22]   10,474,007
Fair value [2],[11],[22]   $ 10,473,968
Percentage of net assets [11],[22]   5.50%
Investment, Identifier [Axis]: TS-MP, LLC (dba Mission) - Class A-1 Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17] star:TSMPLLCDbaMissionClassA1PreferredEquitySecuritiesMember  
Investment, Significant Unobservable Input [true false] [17] true  
Basis spread on variable rate [10],[17] 0.00%  
Interest Rate [17] 0.00%  
Acquisition date [17] Dec. 09, 2021  
Principal, Shares, Units [17] $ 69  
Amortized cost [1],[17] 1,928,409  
Fair value [2],[17] $ 0  
Percentage of net assets [17] 0.00%  
Investment, Identifier [Axis]: TS-MP, LLC (dba Mission) - Class AA-1 Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17] star:TSMPLLCDbaMissionClassAA1PreferredEquitySecuritiesMember  
Investment, Significant Unobservable Input [true false] [17] true  
Basis spread on variable rate [10],[17] 0.00%  
Interest Rate [17] 0.00%  
Acquisition date [17] Dec. 10, 2024  
Principal, Shares, Units [17] $ 88  
Amortized cost [1],[17] 1,960,641  
Fair value [2],[17] $ 1,782,334  
Percentage of net assets [17] 0.70%  
Investment, Identifier [Axis]: Texas Contract Manufacturing Group, Inc. First Lien Senior Secured Term Loan SOFR Spread 12.11% Interest Rate 16.42% Due 4/27/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9] star:TexasContractManufacturingGroupIncFirstLienSeniorSecuredTermLoanSOFRSpread1211InterestRate1642Due4272027Member  
Investment, Significant Unobservable Input [true false] [7] true  
Basis spread on variable rate [7],[10] 12.11%  
Interest Rate [7] 16.42%  
Acquisition date [7] Apr. 27, 2022  
Maturity date [7] Apr. 27, 2027  
Principal, Shares, Units [7] $ 4,605,541  
Amortized cost [1],[7] 4,547,261  
Fair value [2],[7] $ 3,968,595  
Percentage of net assets [7] 1.60%  
Investment, Identifier [Axis]: Texas Contract Manufacturing Group, Inc. First Lien Senior Secured Term Loan SOFR Spread 12.11% Interest Rate 17.44% Due 4/27/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11]   star:TexasContractManufacturingGroupIncFirstLienSeniorSecuredTermLoanSOFRSpread1211InterestRate1744Due4272027Member
Investment, Significant Unobservable Input [true false] [11]   true
Basis spread on variable rate [10],[11]   12.11%
Interest Rate [11]   17.44%
Acquisition date [11]   Apr. 27, 2022
Maturity date [11]   Apr. 27, 2027
Principal, Shares, Units [11]   $ 4,909,896
Amortized cost [1],[11]   4,832,798
Fair value [2],[11]   $ 4,196,979
Percentage of net assets [11]   2.20%
Investment, Identifier [Axis]: Texas Contract Manufacturing Group, Inc. Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:TexasContractManufacturingGroupIncWarrantsAndOtherEquitySecuritiesMember star:TexasContractManufacturingGroupIncWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false] true true
Basis spread on variable rate [10] 0.00% 0.00%
Interest Rate 0.00% 0.00%
Acquisition date Apr. 27, 2022 Apr. 27, 2022
Principal, Shares, Units $ 1,602 $ 1,602
Amortized cost [1] 0 0
Fair value [2] $ 249,355 $ 490,323
Percentage of net assets 0.10% 0.30%
Investment, Identifier [Axis]: The Range NYC, LLC (dba Five Iron Golf) First Lien Senior Secured Term Loan SOFR Spread 7.61% Interest Rate 11.92% Due 9/15/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[14] star:TheRangeNYCLLCDbaFiveIronGolfFirstLienSeniorSecuredTermLoanSOFRSpread761InterestRate1192Due9152027Member  
Investment, Significant Unobservable Input [true false] [7],[14] true  
Basis spread on variable rate [7],[10],[14] 7.61%  
Interest Rate [7],[14] 11.92%  
Acquisition date [7],[14] Sep. 15, 2022  
Maturity date [7],[14] Sep. 15, 2027  
Principal, Shares, Units [7],[14] $ 4,928,571  
Amortized cost [1],[7],[14] 4,819,417  
Fair value [2],[7],[14] $ 4,876,329  
Percentage of net assets [7],[14] 2.00%  
Investment, Identifier [Axis]: The Range NYC, LLC (dba Five Iron Golf) First Lien Senior Secured Term Loan SOFR Spread 7.61% Interest Rate 12.94% Due 9/15/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11],[22]   star:TheRangeNYCLLCDbaFiveIronGolfFirstLienSeniorSecuredTermLoanSOFRSpread761InterestRate1294Due9152027Member
Investment, Significant Unobservable Input [true false] [11],[22]   true
Basis spread on variable rate [10],[11],[22]   7.61%
Interest Rate [11],[22]   12.94%
Acquisition date [11],[22]   Sep. 15, 2022
Maturity date [11],[22]   Sep. 15, 2027
Principal, Shares, Units [11],[22]   $ 4,978,992
Amortized cost [1],[11],[22]   4,839,259
Fair value [2],[11],[22]   $ 4,876,922
Percentage of net assets [11],[22]   2.60%
Investment, Identifier [Axis]: The Range NYC, LLC (dba Five Iron Golf) Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:TheRangeNYCLLCDbaFiveIronGolfWarrantsAndOtherEquitySecuritiesMember star:TheRangeNYCLLCDbaFiveIronGolfWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false] true true
Basis spread on variable rate [10] 0.00% 0.00%
Interest Rate 0.00% 0.00%
Acquisition date Sep. 15, 2022 Sep. 15, 2022
Principal, Shares, Units $ 21,210 $ 21,210
Amortized cost [1] 71,599 71,599
Fair value [2] $ 34,623 $ 32,606
Percentage of net assets 0.00% 0.00%
Investment, Identifier [Axis]: Trading Companies & Distributors First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:TradingCompaniesDistributorsFirstLienSeniorSecuredTermLoanMember star:TradingCompaniesDistributorsFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Trading Companies & Distributors First Lien Senior Secured Term Loan Controlled Investments    
Investments [Abstract]    
Principal, Shares, Units $ 2,484,904  
Amortized cost [1] 2,450,388  
Fair value [2] $ 2,240,638  
Percentage of net assets 0.90%  
Investment, Identifier [Axis]: Trading Companies & Distributors First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 8,226,269 $ 15,748,814
Amortized cost [1] 8,085,958 15,510,605
Fair value [2] $ 8,085,958 $ 10,144,017
Percentage of net assets 3.30% 5.40%
Investment, Identifier [Axis]: Trading Companies & Distributors Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:TradingCompaniesDistributorsPreferredEquitySecuritiesMember star:TradingCompaniesDistributorsPreferredEquitySecuritiesMember
Investment, Identifier [Axis]: Trading Companies & Distributors Preferred Equity Securities Controlled Investments    
Investments [Abstract]    
Principal, Shares, Units $ 3,012,188  
Amortized cost [1] 5,163,574  
Fair value [2] $ 936,000  
Percentage of net assets 0.40%  
Investment, Identifier [Axis]: Trading Companies & Distributors Preferred Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units   $ 9,844
Amortized cost [1]   476,074
Fair value [2]   $ 0
Percentage of net assets   0.00%
Investment, Identifier [Axis]: Trading Companies & Distributors Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:TradingCompaniesDistributorsWarrantsAndOtherEquitySecuritiesMember star:TradingCompaniesDistributorsWarrantsAndOtherEquitySecuritiesMember
Investment, Identifier [Axis]: Trading Companies & Distributors Warrants and Other Equity Securities Controlled Investments    
Investments [Abstract]    
Principal, Shares, Units $ 204  
Amortized cost [1] 0  
Fair value [2] $ 0  
Percentage of net assets 0.00%  
Investment, Identifier [Axis]: Trading Companies & Distributors Warrants and Other Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units   $ 204
Amortized cost [1]   0
Fair value [2]   $ 0
Percentage of net assets   0.00%
Investment, Identifier [Axis]: Trailer Park Group Holdings LLC - Class A Units Preferred Equity Securities Interest Rate 8.00% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16],[17] star:TrailerParkGroupHoldingsLLCClassAUnitsPreferredEquitySecuritiesInterestRate800PIKMember star:TrailerParkGroupHoldingsLLCClassAUnitsPreferredEquitySecuritiesInterestRate800PIKMember
Investment, Significant Unobservable Input [true false] [16],[17] true true
Basis spread on variable rate [10],[16],[17] 0.00% 0.00%
Interest Rate [16],[17]   8.00%
PIK Interest Rate [16],[17] 8.00%  
Acquisition date [16],[17] Aug. 02, 2021 Aug. 02, 2021
Principal, Shares, Units [16],[17] $ 371,822 $ 371,822
Amortized cost [1],[16],[17] 367,108 367,108
Fair value [2],[16],[17] $ 662,587 $ 696,609
Percentage of net assets [16],[17] 0.30% 0.40%
Investment, Identifier [Axis]: Trailer Park Group Holdings LLC Class A1 Units Preferred Equity Securities Interest Rate    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16],[17]   star:TrailerParkGroupHoldingsLLCClassA1UnitsPreferredEquitySecuritiesInterestRateMember
Investment, Significant Unobservable Input [true false] [16],[17]   true
Basis spread on variable rate [10],[16],[17]   0.00%
Interest Rate [16],[17]   0.00%
Acquisition date [16],[17]   Dec. 19, 2023
Principal, Shares, Units [16],[17]   $ 40,888
Amortized cost [1],[16],[17]   73,599
Fair value [2],[16],[17]   $ 112,309
Percentage of net assets [16],[17]   0.10%
Investment, Identifier [Axis]: Trailer Park Group Holdings LLC First Lien Senior Secured Term Loan SOFR Spread 6.76% Cash Plus 1.50% PIK Interest Rate 11.07% Cash Plus 1.50% PIK Due 8/2/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[19] star:TrailerParkGroupHoldingsLLCFirstLienSeniorSecuredTermLoanSOFRSpread676CashPlus150PIKInterestRate1107CashPlus150PIKDue822026Member  
Investment, Significant Unobservable Input [true false] [7],[19] true  
Basis spread on variable rate [7],[10],[19] 6.76%  
Paid in Kind Basis Spread Variable Rate [7],[10],[19] 1.50%  
Interest Rate [7],[19] 11.07%  
PIK Interest Rate [7],[19] 1.50%  
Acquisition date [7],[19] Aug. 02, 2021  
Maturity date [7],[19] Aug. 02, 2026  
Principal, Shares, Units [7],[19] $ 14,790,995  
Amortized cost [1],[7],[19] 14,572,105  
Fair value [2],[7],[19] $ 14,517,362  
Percentage of net assets [7],[19] 6.00%  
Investment, Identifier [Axis]: Trailer Park Group Holdings LLC First Lien Senior Secured Term Loan SOFR Spread 6.76% Cash Plus 1.50% PIK Interest Rate 12.09% Cash Plus 1.50% PIK Due 8/2/2026    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11],[19]   star:TrailerParkGroupHoldingsLLCFirstLienSeniorSecuredTermLoanSOFRSpread676CashPlus150PIKInterestRate1209CashPlus150PIKDue822026Member
Investment, Significant Unobservable Input [true false] [11],[19]   true
Basis spread on variable rate [10],[11],[19]   6.76%
Paid in Kind Basis Spread Variable Rate [10],[11],[19]   1.50%
Interest Rate [11],[19]   12.09%
PIK Interest Rate [11],[19]   1.50%
Acquisition date [11],[19]   Aug. 02, 2021
Maturity date [11],[19]   Aug. 02, 2026
Principal, Shares, Units [11],[19]   $ 14,472,961
Amortized cost [1],[11],[19]   14,244,796
Fair value [2],[11],[19]   $ 14,218,237
Percentage of net assets [11],[19]   7.50%
Investment, Identifier [Axis]: Trailer Park Group Holdings, LLC Class A-1 Units Preferred Equity Securities Interest Rate 15.00% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16],[17] star:TrailerParkGroupHoldingsLLCClassA1UnitsPreferredEquitySecuritiesInterestRate1500PIKMember  
Investment, Significant Unobservable Input [true false] [16],[17] true  
Basis spread on variable rate [10],[16],[17] 0.00%  
PIK Interest Rate [16],[17] 15.00%  
Acquisition date [16],[17] Dec. 19, 2023  
Principal, Shares, Units [16],[17] $ 40,888  
Amortized cost [1],[16],[17] 73,599  
Fair value [2],[16],[17] $ 110,402  
Percentage of net assets [16],[17] 0.00%  
Investment, Identifier [Axis]: Transportation Infrastructure First Lien Senior Secured Term Loan    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9] star:TransportationInfrastructureFirstLienSeniorSecuredTermLoanMember star:TransportationInfrastructureFirstLienSeniorSecuredTermLoanMember
Investment, Identifier [Axis]: Transportation Infrastructure First Lien Senior Secured Term Loan Non-Affiliate Investments    
Investments [Abstract]    
Principal, Shares, Units $ 10,339,453 $ 10,676,188
Amortized cost [1] 10,193,719 10,474,007
Fair value [2] $ 10,339,453 $ 10,473,968
Percentage of net assets 4.30% 5.50%
Investment, Identifier [Axis]: UJP Acquisition, LLC (dba Uncle John's Pride) Preferred Equity Securities Interest Rate 8.00% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16],[17] star:UJPAcquisitionLLCDbaUncleJohnSPridePreferredEquitySecuritiesInterestRate800PIKMember [15] star:UJPAcquisitionLLCDbaUncleJohnSPridePreferredEquitySecuritiesInterestRate800PIKMember
Investment, Significant Unobservable Input [true false] [16],[17] true [15] true
Basis spread on variable rate [10],[16],[17] 0.00% [15] 0.00%
Interest Rate [16],[17]   8.00%
PIK Interest Rate [15],[16],[17] 8.00%  
Acquisition date [16],[17] Mar. 31, 2022 [15] Mar. 31, 2022
Principal, Shares, Units [16],[17] $ 2,829,787 [15] $ 2,829,787
Amortized cost [1],[16],[17] 2,829,787 [15] 2,829,787
Fair value [2],[16],[17] $ 4,532,872 [15] $ 4,482,681
Percentage of net assets [16],[17] 1.90% [15] 2.40%
Investment, Identifier [Axis]: UJP Acquisition, LLC (dba Uncle John's Pride) Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17] star:UJPAcquisitionLLCDbaUncleJohnSPrideWarrantsAndOtherEquitySecuritiesMember [15] star:UJPAcquisitionLLCDbaUncleJohnSPrideWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false] [17] true [15] true
Basis spread on variable rate [10],[17] 0.00% [15] 0.00%
Interest Rate [17] 0.00% [15] 0.00%
Acquisition date [17] Mar. 31, 2022 [15] Mar. 31, 2022
Principal, Shares, Units [17] $ 127,215 [15] $ 127,215
Amortized cost [1],[17] 0 [15] 0
Fair value [2],[17] $ 76,329 [15] $ 53,021
Percentage of net assets [17] 0.00% [15] 0.00%
Investment, Identifier [Axis]: USBid Inc. - Class A Units Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9]   star:USBidIncClassAUnitsPreferredEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]   true
Basis spread on variable rate [10]   0.00%
Interest Rate   0.00%
Acquisition date   Nov. 03, 2022
Principal, Shares, Units   $ 469
Amortized cost [1]   468,750
Fair value [2]   $ 0
Percentage of net assets   0.00%
Investment, Identifier [Axis]: USBid Inc. - Class C Units Preferred Equity Securities Interest 10.00% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9]   star:USBidIncClassCUnitsPreferredEquitySecuritiesInterest1000PIKMember
Investment, Significant Unobservable Input [true false]   true
Basis spread on variable rate [10]   0.00%
Interest Rate   10.00%
Acquisition date   Nov. 02, 2023
Principal, Shares, Units   $ 9,375
Amortized cost [1]   7,324
Fair value [2]   $ 0
Percentage of net assets   0.00%
Investment, Identifier [Axis]: USBid Inc. First Lien Senior Secured Term Loan SOFR Spread 7.26% Interest Rate 11.57% Due 11/3/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[15],[19] star:USBidIncFirstLienSeniorSecuredTermLoanSOFRSpread726InterestRate1157Due1132027Member  
Investment, Significant Unobservable Input [true false] [7],[15],[19] true  
Basis spread on variable rate [7],[10],[15],[19] 7.26%  
Interest Rate [7],[15],[19] 11.57%  
Acquisition date [7],[15],[19] Nov. 03, 2022  
Maturity date [7],[15],[19] Nov. 03, 2027  
Principal, Shares, Units [7],[15],[19] $ 2,484,904  
Amortized cost [1],[7],[15],[19] 2,450,388  
Fair value [2],[7],[15],[19] $ 2,240,638  
Percentage of net assets [7],[15],[19] 0.90%  
Investment, Identifier [Axis]: USBid Inc. First Lien Senior Secured Term Loan SOFR Spread 7.26% Interest Rate 12.59% Due 11/3/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11],[19]   star:USBidIncFirstLienSeniorSecuredTermLoanSOFRSpread726InterestRate1259Due1132027Member
Investment, Significant Unobservable Input [true false] [11],[19]   true
Basis spread on variable rate [10],[11],[19]   7.26%
Interest Rate [11],[19]   12.59%
Acquisition date [11],[19]   Nov. 03, 2022
Maturity date [11],[19]   Nov. 03, 2027
Principal, Shares, Units [11],[19]   $ 7,154,451
Amortized cost [1],[11],[19]   7,016,197
Fair value [2],[11],[19]   $ 1,549,654
Percentage of net assets [11],[19]   0.90%
Investment, Identifier [Axis]: USBid Inc. Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9]   star:USBidIncWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]   true
Basis spread on variable rate [10]   0.00%
Interest Rate   0.00%
Acquisition date   Nov. 03, 2022
Principal, Shares, Units   $ 204
Amortized cost [1]   0
Fair value [2]   $ 0
Percentage of net assets   0.00%
Investment, Identifier [Axis]: USBid Parent, LLC - Class A Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[15] star:USBidParentLLCClassAPreferredEquitySecuritiesMember  
Investment, Significant Unobservable Input [true false] [15] true  
Basis spread on variable rate [10],[15] 0.00%  
Interest Rate [15] 0.00%  
Acquisition date [15] Nov. 03, 2022  
Principal, Shares, Units [15] $ 2,813  
Amortized cost [1],[15] 2,812,500  
Fair value [2],[15] $ 0  
Percentage of net assets [15] 0.00%  
Investment, Identifier [Axis]: USBid Parent, LLC - Class C Preferred Equity Securities Interest 10.00% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[15] star:USBidParentLLCClassCPreferredEquitySecuritiesInterest1000PIKMember  
Investment, Significant Unobservable Input [true false] [15] true  
Basis spread on variable rate [10],[15] 0.00%  
PIK Interest Rate [15] 10.00%  
Acquisition date [15] Nov. 02, 2023  
Principal, Shares, Units [15] $ 3,009,375  
Amortized cost [1],[15] 2,351,074  
Fair value [2],[15] $ 936,000  
Percentage of net assets [15] 0.40%  
Investment, Identifier [Axis]: USBid Parent, LLC Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[15] star:USBidParentLLCWarrantsAndOtherEquitySecuritiesMember  
Investment, Significant Unobservable Input [true false] [15] true  
Basis spread on variable rate [10],[15] 0.00%  
Interest Rate [15] 0.00%  
Acquisition date [15] Nov. 03, 2022  
Principal, Shares, Units [15] $ 204  
Amortized cost [1],[15] 0  
Fair value [2],[15] $ 0  
Percentage of net assets [15] 0.00%  
Investment, Identifier [Axis]: Uncle John's Pride, LLC First Lien Senior Secured Term Loan SOFR Spread 10.11% Interest Rate 14.44% Due 3/31/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[12],[15] star:UncleJohnSPrideLLCFirstLienSeniorSecuredTermLoanSOFRSpread1011InterestRate1444Due3312027Member  
Investment, Significant Unobservable Input [true false] [12],[15] true  
Basis spread on variable rate [10],[12],[15] 10.11%  
Interest Rate [12],[15] 14.44%  
Acquisition date [12],[15] Mar. 31, 2022  
Maturity date [12],[15] Mar. 31, 2027  
Principal, Shares, Units [12],[15] $ 6,930,002  
Amortized cost [1],[12],[15] 6,832,506  
Fair value [2],[12],[15] $ 6,999,302  
Percentage of net assets [12],[15] 2.90%  
Investment, Identifier [Axis]: Uncle John's Pride, LLC First Lien Senior Secured Term Loan SOFR Spread 10.11% Interest Rate 15.46% Due 3/31/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[13]   star:UncleJohnSPrideLLCFirstLienSeniorSecuredTermLoanSOFRSpread1011InterestRate1546Due3312027Member
Investment, Significant Unobservable Input [true false] [13]   true
Basis spread on variable rate [10],[13]   10.11%
Interest Rate [13]   15.46%
Acquisition date [13]   Mar. 31, 2022
Maturity date [13]   Mar. 31, 2027
Principal, Shares, Units [13]   $ 7,146,952
Amortized cost [1],[13]   7,017,250
Fair value [2],[13]   $ 7,146,952
Percentage of net assets [13]   3.80%
Investment, Identifier [Axis]: Versar Inc. First Lien Senior Secured Term Loan SOFR Spread 8.10% Interest Rate 12.41% Due 8/4/2028    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[19] star:VersarIncFirstLienSeniorSecuredTermLoanSOFRSpread810InterestRate1241Due842028Member  
Investment, Significant Unobservable Input [true false] [7],[19] true  
Basis spread on variable rate [7],[10],[19] 8.10%  
Interest Rate [7],[19] 12.41%  
Acquisition date [7],[19] Aug. 04, 2023  
Maturity date [7],[19] Aug. 04, 2028  
Principal, Shares, Units [7],[19] $ 10,000,000  
Amortized cost [1],[7],[19] 9,658,174  
Fair value [2],[7],[19] $ 9,996,000  
Percentage of net assets [7],[19] 4.20%  
Investment, Identifier [Axis]: Versar Inc. First Lien Senior Secured Term Loan SOFR Spread 8.10% Interest Rate 13.43% Due 8/4/2028    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11],[19]   star:VersarIncSeniorSecuredTermLoanSOFRSpread810InterestRate1343Due842028Member
Investment, Significant Unobservable Input [true false] [11],[19]   true
Basis spread on variable rate [10],[11],[19]   8.10%
Interest Rate [11],[19]   13.43%
Acquisition date [11],[19]   Aug. 04, 2023
Maturity date [11],[19]   Aug. 04, 2028
Principal, Shares, Units [11],[19]   $ 10,000,000
Amortized cost [1],[11],[19]   9,662,349
Fair value [2],[11],[19]   $ 9,662,349
Percentage of net assets [11],[19]   5.10%
Investment, Identifier [Axis]: Vertical Mechanical Group Holdings, LLC Preferred Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17] Preferred Equity Securities [Member], star:VerticalMechanicalGroupHoldingsLLCPreferredEquitySecuritiesMember star:VerticalMechanicalGroupHoldingsLLCPreferredEquitySecuritiesMember
Investment, Significant Unobservable Input [true false] [17] true true
Basis spread on variable rate [10],[17] 0.00% 0.00%
Interest Rate [17] 0.00% 0.00%
Acquisition date [17] May 12, 2023 May 12, 2023
Principal, Shares, Units [17] $ 185,714 $ 185,714
Amortized cost [1],[17] 1,857,143 1,857,143
Fair value [2],[17] $ 4,828,571 $ 3,188,286
Percentage of net assets [17] 2.00% 1.70%
Investment, Identifier [Axis]: Vertical Mechanical Group, LLC First Lien Senior Secured Term Loan SOFR Spread 7.76% Interest Rate 12.07% Due 5/12/2028    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[19] star:VerticalMechanicalGroupLLCFirstLienSeniorSecuredTermLoanSOFRSpread776InterestRate1207Due5122028Member  
Investment, Significant Unobservable Input [true false] [7],[19] true  
Basis spread on variable rate [7],[10],[19] 7.76%  
Interest Rate [7],[19] 12.07%  
Acquisition date [7],[19] May 12, 2023  
Maturity date [7],[19] May 12, 2028  
Principal, Shares, Units [7],[19] $ 7,428,571  
Amortized cost [1],[7],[19] 7,234,557  
Fair value [2],[7],[19] $ 7,428,571  
Percentage of net assets [7],[19] 3.10%  
Investment, Identifier [Axis]: Vertical Mechanical Group, LLC First Lien Senior Secured Term Loan SOFR Spread 7.76% Interest Rate 13.09% Due 5/12/2028    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11],[19]   star:VerticalMechanicalGroupLLCSeniorSecuredTermLoanSOFRSpread776InterestRate1309Due5122028Member
Investment, Significant Unobservable Input [true false] [11],[19]   true
Basis spread on variable rate [10],[11],[19]   7.76%
Interest Rate [11],[19]   13.09%
Acquisition date [11],[19]   May 12, 2023
Maturity date [11],[19]   May 12, 2028
Principal, Shares, Units [11],[19]   $ 4,571,429
Amortized cost [1],[11],[19]   4,420,000
Fair value [2],[11],[19]   $ 4,420,000
Percentage of net assets [11],[19]   2.30%
Investment, Identifier [Axis]: Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Type [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[28],[29] Warrants and Other Equity Securities [Member] Warrants and Other Equity Securities [Member]
Investment, Identifier [Axis]: Warrants and Other Equity Securities Controlled Investments    
Investments [Abstract]    
Amortized cost [1] $ 443,392 $ 443,392
Fair value [2] $ 76,329 $ 571,189
Percentage of net assets 0.00% 0.30%
Investment, Identifier [Axis]: Warrants and Other Equity Securities Non-Affiliate Investments    
Investments [Abstract]    
Amortized cost [1] $ 3,154,635 $ 2,424,364
Fair value [2] $ 7,350,048 $ 5,135,234
Percentage of net assets 3.20% 2.80%
Investment, Identifier [Axis]: Watt Acquisition, LLC First Lien Senior Secured Term Loan SOFR Spread 11.25% Interest Rate 16.58% Due 4/15/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11],[19]   star:WattAcquisitionLLCSeniorSecuredTermLoanSOFRSpread1125InterestRate1658Due4152027Member
Investment, Significant Unobservable Input [true false] [11],[19]   true
Basis spread on variable rate [10],[11],[19]   11.25%
Interest Rate [11],[19]   16.58%
Acquisition date [11],[19]   Apr. 15, 2022
Maturity date [11],[19]   Apr. 15, 2027
Principal, Shares, Units [11],[19]   $ 3,653,125
Amortized cost [1],[11],[19]   3,597,178
Fair value [2],[11],[19]   $ 3,132,920
Percentage of net assets [11],[19]   1.60%
Investment, Identifier [Axis]: Watt Acquisition, LLC First Lien Senior Secured Term Loan SOFR Spread 14.25% Interest Rate 12.99% Cash Plus 5.57% PIK Due 4/15/2027    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[7],[8],[9],[15],[19] star:WattAcquisitionLLCFirstLienSeniorSecuredTermLoanSOFRSpread1425InterestRate1299CashPlus557PIKDue4152027Member  
Investment, Significant Unobservable Input [true false] [7],[15],[19] true  
Basis spread on variable rate [7],[10],[15],[19] 14.25%  
Interest Rate [7],[15],[19] 12.99%  
PIK Interest Rate [7],[15],[19] 5.57%  
Acquisition date [7],[15],[19] Apr. 15, 2022  
Maturity date [7],[15],[19] Apr. 15, 2027  
Principal, Shares, Units [7],[15],[19] $ 2,574,092  
Amortized cost [1],[7],[15],[19] 2,548,389  
Fair value [2],[7],[15],[19] $ 2,430,200  
Percentage of net assets [7],[15],[19] 1.00%  
Investment, Identifier [Axis]: Watt Contracting Holdings, LLC Preferred Equity Securities Interest Rate 15.00% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17] star:WattContractingHoldingsLLCPreferredEquitySecuritiesInterestRate1500PIKMember [15] star:WattContractingHoldingsLLCPreferredEquitySecuritiesInterestRate1500PIKMember
Investment, Significant Unobservable Input [true false] [17] true [15] true
Basis spread on variable rate [10],[17] 0.00% [15] 0.00%
Interest Rate [17]   15.00%
PIK Interest Rate [15],[17] 15.00%  
Acquisition date [17] Apr. 15, 2022 [15] Apr. 15, 2022
Principal, Shares, Units [17] $ 3,375 [15] $ 2,110
Amortized cost [1],[17] 3,316,130 [15] 2,077,366
Fair value [2],[17] $ 3,519,772 [15] $ 133,929
Percentage of net assets [17] 1.50% [15] 0.10%
Investment, Identifier [Axis]: Watt Contracting Holdings, LLC Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[17] star:WattContractingHoldingsLLCWarrantsAndOtherEquitySecuritiesMember [15] star:WattContractingHoldingsLLCWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false] [17] true [15] true
Basis spread on variable rate [10],[17] 0.00% [15] 0.00%
Interest Rate [17] 0.00% [15] 0.00%
Acquisition date [17] Apr. 15, 2022 [15] Apr. 15, 2022
Principal, Shares, Units [17] $ 295 [15] $ 218
Amortized cost [1],[17] 0 [15] 0
Fair value [2],[17] $ 0 [15] $ 0
Percentage of net assets [17] 0.00% [15] 0.00%
Investment, Identifier [Axis]: YTC Holdings, Inc. (dba Yorktel) First Lien Senior Secured Term Loan SOFR Spread 10.01% Interest Rate 15.34% Due 1/31/2025    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[11],[22]   star:YTCHoldingsIncDbaYorktelSeniorSecuredTermLoanSOFRSpread1001InterestRate1534Due1312025Member
Investment, Significant Unobservable Input [true false] [11],[22]   true
Basis spread on variable rate [10],[11],[22]   10.01%
Interest Rate [11],[22]   15.34%
Acquisition date [11],[22]   Sep. 23, 2019
Maturity date [11],[22]   Jan. 31, 2025
Principal, Shares, Units [11],[22]   $ 4,632,805
Amortized cost [1],[11],[22]   4,600,276
Fair value [2],[11],[22]   $ 4,632,805
Percentage of net assets [11],[22]   2.40%
Investment, Identifier [Axis]: YTC Holdings, Inc. (dba Yorktel) Preferred Equity Securities Interest Rate 8.00% PIK    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9],[16]   star:YTCHoldingsIncDbaYorktelPreferredEquitySecuritiesInterestRate800PIKMember
Investment, Significant Unobservable Input [true false] [16]   true
Basis spread on variable rate [10],[16]   0.00%
Interest Rate [16]   8.00%
Acquisition date [16]   Sep. 23, 2019
Principal, Shares, Units [16]   $ 151,018
Amortized cost [1],[16]   2,327,393
Fair value [2],[16]   $ 1,926,709
Percentage of net assets [16]   1.00%
Investment, Identifier [Axis]: York Telecom Corporation (dba Yorktel) Warrants and Other Equity Securities    
Investments [Abstract]    
Investment, Issuer Name [Extensible Enumeration] [3],[4],[5],[6],[8],[9]   star:YorkTelecomCorporationDbaYorktelWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]   true
Basis spread on variable rate [10]   0.00%
Interest Rate   0.00%
Acquisition date   Sep. 23, 2019
Principal, Shares, Units   $ 77,195
Amortized cost [1]   0
Fair value [2]   $ 582,640
Percentage of net assets   0.30%
[1] The amortized cost represents the original cost adjusted for the amortization of discounts and premiums, as applicable, on debt investments using the effective interest method.
[2] Because there is no readily available market value for these investments, the fair value of each of these investments is determined in good faith using significant unobservable inputs by the Company’s board of directors (the “Board”) as required by the 1940 Act. See Note 4 "Fair Value Measurements" in the accompanying notes to the consolidated financial statements.
[3] All investments are co-investments made with the Company’s affiliates in accordance with the terms of the exemptive relief that the Company received from the U.S. Securities and Exchange Commission (the “SEC”), unless otherwise noted. See Note 6 “Transactions with Related Parties” in the accompanying notes to the consolidated financial statements.
[4] All investments are non-controlled/non-affiliated investments as defined by the 1940 Act, unless otherwise noted. The 1940 Act classifies investments based on the level of control that the Company maintains in a particular portfolio company.
[5] All of the Company’s investments are issued by eligible portfolio companies, as defined in the Investment Company Act of 1940 (the “1940 Act”), unless otherwise noted. All of the Company’s investments are issued by U.S. portfolio companies unless otherwise noted.
[6] Except as otherwise noted, all of the Company’s portfolio company investments are subject to legal restrictions on sales.
[7] The interest rate on these loans is subject to 3 month SOFR, which was 4.31% as of December 31, 2024.
[8] Unless otherwise indicated, all investments are considered Level 3 assets.
[9] Unless otherwise indicated, the Company’s portfolio companies are pledged as collateral supporting the amounts outstanding under the Secured Credit Facility (as defined herein).
[10] Loan contains a variable rate structure and may be subject to an interest rate floor. Variable rate loans bear interest at a rate that may be determined by reference to either the Secured Overnight Financing Rate (“SOFR” or “S”) or an alternate base rate which can include the Federal Funds Effective Rate or the Prime Rate, at the borrower’s option, and which reset periodically based on the terms of the loan agreement. Interest rates subject to SOFR are typically accompanied by a Credit Spread Adjustment (“CSA”).
[11] The interest rate on these loans is subject to 3 month SOFR, which was 5.33% as of December 31, 2023.
[12] The interest rate on these loans is subject to 1 month SOFR, which was 4.33% as of December 31, 2024.
[13] The interest rate on these loans is subject to 1 month SOFR, which was 5.35% as of December 31, 2023.
[14] Positions have an aggregate unfunded commitment of $21,455,258 in addition to the amounts shown in the Consolidated Schedule of Investments. See Note 11 “Commitments, Contingencies and Risks” in the accompanying notes to the consolidated financial statements.
[15] As defined in the 1940 Act, the Company is deemed to be both an “Affiliated Person” and may have “Control” of this portfolio company as the Company and/or its affiliated funds collectively owns more than 25% of the portfolio company’s outstanding voting securities or has the power to exercise control over management or policies of such portfolio company (including through a management agreement). The Company’s investment in affiliates for the year ended December 31, 2024 represented $50,680,798 of Fair Value and 20.5% of Net Assets of the Company. Transactions related to investments in “Controlled/Affiliate Investments” for the year ended December 31, 2024 were as follows:
[16] Investment contains a fixed rate structure.
[17] Investment is held by a subsidiary of the Company. See Note 2 in the accompanying notes to the consolidated financial statements for additional information on the Company’s wholly-owned subsidiary.
[18] As defined in the 1940 Act, the Company is deemed to be both an “Affiliated Person” and has “Control” of this portfolio company as the Company and its affiliated funds collectively owns more than 25% of the portfolio company’s outstanding voting securities or has the power to exercise control over management or policies of such portfolio company (including through a management agreement). The Company’s investment in affiliates for the year ended December 31, 2023 were Arrow Home Health, LLC which represented $9,370,413 of Fair Value and 4.9% of Net Assets of the Company. Transactions related to investments in “Controlled/Affiliate Investments” for the year ended December 31, 2023were as follows:
[19] The Company categorized its unitranche loans as First Lien Senior Secured Loans. The First Lien Senior Secured Loan is comprised of two components: a first out tranche (“First Out”) and last out tranche (“Last Out”). The Company syndicates the First Out tranche and retains the Last Out tranche. The First Out and Last Out tranches have the same maturity date. Interest disclosed reflects the contractual rate of First Lien Senior Secured Loan. The First Out tranche has priority as to the Last Out tranche with respect to payments of principal, interest and any amounts due thereunder. The Company may be entitled to receive additional interest as a result of the Agreement Among Lenders (“AAL”) entered into with the First Out lender. In exchange for the higher interest rate, the Last Out portion is at a greater risk of loss.
[20] Maturity date is under on-going negotiations with the portfolio company and other lenders as of December 31, 2024, as applicable.
[21] The investment is on non-accrual status. See Note 2 “Significant Accounting Policies”.
[22] Positions have an aggregate unfunded commitment of $16,702,665 in addition to the amounts shown in the Consolidated Schedule of Investments.
[23] The investment does not accrue PIK for the debt investment as of December 31, 2023. See Note 2. "Significant Accounting Policies".
[24] The investment does not accrue PIK for the debt or equity investment as of December 31, 2024. See Note 2 “Significant Accounting Policies”.
[25] The Company has received 46 units of incentive shares which have no Cost or Fair Value as of December 31, 2024.
[26] The Company has received 46 units of incentive shares which have no Cost or Fair Value as of December 31, 2023.
[27] Interest disclosed reflects the contractual rate of the First Out tranche under the AAL.
[28] All investments are non-income producing unless otherwise indicated.
[29] Ownership of certain equity investments may occur through a holding company or partnership.
[30] Interest disclosed reflects the contractual rate of the First Out tranche under the Agreement Among Lenders (“AAL”).
[31] The investment includes the fair value and amortized cost of 1,015 shares of common equity issued in conjunction with the preferred equity.