Schedule of Investments - USD ($)		6 Months Ended		12 Months Ended
		Jun. 30, 2023		Dec. 31, 2022
Investments [Abstract]
Amortized cost	[1]	$ 347,191,607		$ 300,834,211
Fair value	[2]	$ 350,758,810		$ 303,195,681
Percentage of net assets		180.20%		182.40%
Investment, Identifier [Axis]: 48forty Intermediate Holdings, Inc. First Lien Senior Secured Term Loan SOFR Spread 6.15% Interest Rate 11.42% Due 12/1/2026
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:Four8fortyIntermediateHoldingsIncFirstLienSeniorSecuredTermLoanSOFRSpread610InterestRate1101Due1212026Member	[3]	star:Four8fortyIntermediateHoldingsIncFirstLienSeniorSecuredTermLoanSOFRSpread610InterestRate1101Due1212026Member	[4]
Investment, Significant Unobservable Input [true false]		true	[3]	true
Basis spread on variable rate		6.15%	[3],[5]	6.15%	[4],[6]
Interest Rate		11.42%	[3]	10.74%	[4]
Acquisition date		Oct. 11, 2022	[3]	Oct. 11, 2022	[4]
Maturity date		Dec. 01, 2026	[3]	Dec. 01, 2026	[4]
Principal, Shares, Units		$ 14,924,812	[3]	$ 14,962,500	[4]
Amortized cost	[1]	14,379,819	[3]	14,383,702	[4]
Fair value	[2]	$ 14,606,914	[3]	$ 14,383,702	[4]
Percentage of net assets		7.50%	[3]	8.70%	[4]
Investment, Identifier [Axis]: Aerospace & Defense First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:AerospaceDefenseFirstLienSeniorSecuredTermLoanMember		star:AerospaceDefenseFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 7,601,939		$ 6,175,748
Amortized cost	[1]	7,386,541		6,094,051
Fair value	[2]	$ 7,234,765		$ 5,844,055
Percentage of net assets		3.70%		3.40%
Investment, Identifier [Axis]: Aerospace & Defense Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:AerospaceDefenseWarrantsAndOtherEquitySecuritiesMember		star:AerospaceDefenseWarrantsAndOtherEquitySecuritiesMember
Principal, Shares, Units		$ 176		$ 127
Amortized cost	[1]	142,485		142,485
Fair value	[2]	$ 21,618		$ 33,642
Percentage of net assets		0.00%		0.00%
Investment, Identifier [Axis]: Arrow Home Health, LLC (dba Acara Home Health) First Lien Senior Secured Term Loan SOFR Spread 8.50% Interest Rate 13.77% Due 3/19/2026
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:ArrowHomeHealthLLCDbaAcaraHomeHealthFirstLienSeniorSecuredTermLoanSOFRSpread850InterestRate1341Due3192026Member	[3],[7]	star:ArrowHomeHealthLLCDbaAcaraHomeHealthFirstLienSeniorSecuredTermLoanSOFRSpread850InterestRate1341Due3192026Member	[8],[9]
Investment, Significant Unobservable Input [true false]		true	[3],[7]	true
Basis spread on variable rate		8.50%	[3],[5],[7]	8.50%	[6],[8],[9]
Interest Rate		13.77%	[3],[7]	13.27%	[8],[9]
Acquisition date		Mar. 19, 2021	[3],[7]	Mar. 19, 2021	[8],[9]
Maturity date		Mar. 19, 2026	[3],[7]	Mar. 19, 2026	[8],[9]
Principal, Shares, Units		$ 864,786	[3],[7]	$ 883,775	[8],[9]
Amortized cost	[1]	845,417	[3],[7]	869,498	[8],[9]
Fair value	[2]	$ 825,611	[3],[7]	$ 851,429	[8],[9]
Percentage of net assets		0.40%	[3],[7]	0.50%	[8],[9]
Investment, Identifier [Axis]: Arrow Home Health, LLC (dba Acara Home Health) Preferred Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:ArrowHomeHealthLLCDbaAcaraHomeHealthPreferredEquitySecuritiesMember	[3]	star:ArrowHomeHealthLLCDbaAcaraHomeHealthPreferredEquitySecuritiesMember	[8]
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate	[6],[8]			0.00%
Interest Rate	[8]			0.00%
Acquisition date		Mar. 19, 2021	[3]	Mar. 19, 2021	[8]
Principal, Shares, Units		$ 571,080	[3]	$ 571,080	[8]
Amortized cost	[1]	563,779	[3]	562,921	[8]
Fair value	[2]	$ 372,504	[3]	$ 578,101	[8]
Percentage of net assets		0.20%	[3]	0.30%	[8]
Investment, Identifier [Axis]: BB-HH Platform, Inc. (dba Preferred Care Home Health) First Lien Senior Secured Term Loan SOFR Spread 7.00% Plus 1.50 PIK Interest Rate 12.27 Plus 1.50% PIK Due 5/16/2028
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[3]	star:BBHHPlatformIncDbaPreferredCareHomeHealthFirstLienSeniorSecuredTermLoanSOFRSpread700Plus150PIKInterestRate1227Plus150PIKDue5162028Member
Investment, Significant Unobservable Input [true false]	[3]	true
Basis spread on variable rate	[3],[5]	7.00%
Paid in Kind Basis Spread Variable Rate	[3],[5]	1.50%
Interest Rate	[3]	12.27%
PIK Interest Rate	[3]	1.50%
Acquisition date	[3]	May 16, 2023
Maturity date	[3]	May 16, 2028
Principal, Shares, Units	[3]	$ 8,284,024
Amortized cost	[1],[3]	8,062,080
Fair value	[2],[3]	$ 8,062,080
Percentage of net assets	[3]	4.10%
Investment, Identifier [Axis]: CHG Parent Holding LLC (dba Coop Home Goods) Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:CHGParentHoldingLLCDbaCoopHomeGoodsWarrantsAndOtherEquitySecuritiesMember		star:CHGParentHoldingLLCDbaCoopHomeGoodsWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		0.00%	[5]	0.00%	[6]
Interest Rate				0.00%
Acquisition date		Jun. 18, 2021		Jun. 18, 2021
Principal, Shares, Units		$ 535,714		$ 535,714
Amortized cost	[1]	535,714		535,714
Fair value	[2]	$ 0		$ 156,607
Percentage of net assets		0.00%		0.10%
Investment, Identifier [Axis]: CSI IT, LLC (dba Consulting Solutions) First Lien Senior Secured Term Loan SOFR Spread 10.61% Interest Rate 15.88% Due 1/29/2026
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:CSIITLLCDbaConsultingSolutionsFirstLienSeniorSecuredTermLoanLIBORSpread1050InterestRate1569Due1292026Member	[3]	star:CSIITLLCDbaConsultingSolutionsFirstLienSeniorSecuredTermLoanLIBORSpread1050InterestRate1569Due1292026Member	[9]
Investment, Significant Unobservable Input [true false]		true	[3]	true
Basis spread on variable rate		10.61%	[3],[5]	10.50%	[6],[9]
Interest Rate		15.88%	[3]	15.27%	[9]
Acquisition date		Jan. 29, 2021	[3]	Jan. 29, 2021	[9]
Maturity date		Jan. 29, 2026	[3]	Jan. 29, 2026	[9]
Principal, Shares, Units		$ 13,715,253	[3]	$ 14,100,695	[9]
Amortized cost	[1]	13,475,127	[3]	13,842,228	[9]
Fair value	[2]	$ 13,715,253	[3]	$ 14,001,990	[9]
Percentage of net assets		7.00%	[3]	8.40%	[9]
Investment, Identifier [Axis]: Capone Holdings JV, LLC (dba LaSalle Staffing) Preferred Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:CaponeHoldingsJVLLCDbaLaSalleStaffingPreferredEquitySecuritiesMember		star:CaponeHoldingsJVLLCDbaLaSalleStaffingPreferredEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate	[6]			0.00%
Interest Rate		0.00%		0.00%
Acquisition date		Feb. 15, 2022		Feb. 15, 2022
Principal, Shares, Units		$ 4,000,000		$ 4,000,000
Amortized cost	[1]	4,000,000		4,000,000
Fair value	[2]	$ 5,135,733		$ 5,964,267
Percentage of net assets		2.60%		3.60%
Investment, Identifier [Axis]: Caregility Corporation First Lien Senior Secured Term Loan LIBOR Spread 9.00% Interest Rate 14.55% Due 12/29/2024
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:CaregilityCorporationFirstLienSeniorSecuredTermLoanLIBORSpread900InterestRate1419Due12292024Member	[10]	star:CaregilityCorporationFirstLienSeniorSecuredTermLoanLIBORSpread900InterestRate1419Due12292024Member	[9],[11]
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		9.00%	[5],[10]	9.00%	[6],[9],[11]
Interest Rate		14.55%	[10]	13.77%	[9],[11]
Acquisition date		Dec. 29, 2021	[10]	Dec. 29, 2021	[9],[11]
Maturity date		Dec. 29, 2024	[10]	Dec. 29, 2024	[9],[11]
Principal, Shares, Units		$ 5,757,839	[10]	$ 5,757,839	[9],[11]
Amortized cost	[1]	5,448,081	[10]	5,362,503	[9],[11]
Fair value	[2]	$ 4,789,946	[10]	$ 4,599,360	[9],[11]
Percentage of net assets		2.50%	[10]	2.80%	[9],[11]
Investment, Identifier [Axis]: Caregility Corporation Preferred Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[12]	star:CaregilityCorporationPreferredEquitySecuritiesMember		star:CaregilityCorporationPreferredEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]		true		true	[12]
Basis spread on variable rate	[6],[12]			0.00%
Interest Rate	[12]	0.00%		0.00%
Acquisition date	[12]	Dec. 31, 2022		Dec. 29, 2021
Principal, Shares, Units	[12]	$ 151,018		$ 151,018
Amortized cost	[1],[12]	0		0
Fair value	[2],[12]	$ 1,329,090		$ 1,346,645
Percentage of net assets	[12]	0.70%		0.80%
Investment, Identifier [Axis]: Caregility Corporation Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:CaregilityCorporationWarrantsAndOtherEquitySecuritiesMember		star:CaregilityCorporationWarrantsAndOtherEquitySecuritiesMember	[11]
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		0.00%	[5]	0.00%	[6],[11]
Interest Rate	[11]			0.00%
Acquisition date		Dec. 29, 2021		Dec. 29, 2021	[11]
Principal, Shares, Units		$ 237,082		$ 237,082	[11]
Amortized cost	[1]	443,392		443,392	[11]
Fair value	[2]	$ 1,617,731		$ 1,856,302	[11]
Percentage of net assets		0.80%		1.10%	[11]
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]	[12]	star:ChannelFactoryHoldingsLLCPreferredEquitySecuritiesInterestRate500Plus500PIKMember		star:ChannelFactoryHoldingsLLCPreferredEquitySecuritiesInterestRate500Plus500PIKMember
Investment, Significant Unobservable Input [true false]		true		true	[12]
Basis spread on variable rate	[6],[12]			0.00%
Interest Rate	[12]	5.00%		5.00%
PIK Interest Rate	[12]	5.00%		5.00%
Acquisition date	[12]	Aug. 27, 2020		Aug. 27, 2020
Principal, Shares, Units	[12]	$ 2,381,867		$ 2,381,867
Amortized cost	[1],[12]	2,383,016		2,238,424
Fair value	[2],[12]	$ 3,508,492		$ 3,469,292
Percentage of net assets	[12]	1.80%		2.10%
Investment, Identifier [Axis]: Chicken Soup for The Soul, LLC First Lien Senior Secured Term Loan LIBOR Spread 8.50% Interest Rate 13.72% Due 3/31/2024
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:ChickenSoupForTheSoulLLCFirstLienSeniorSecuredTermLoanLIBORSpread850InterestRate1336Due3312024Member	[13]	star:ChickenSoupForTheSoulLLCFirstLienSeniorSecuredTermLoanLIBORSpread850InterestRate1336Due3312024Member	[14]
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		8.50%	[5],[13]	8.50%	[6],[14]
Interest Rate		13.72%	[13]	12.89%	[14]
Acquisition date		Oct. 29, 2021	[13]	Oct. 29, 2021	[14]
Maturity date		Mar. 31, 2024	[13]	Mar. 31, 2024	[14]
Principal, Shares, Units		$ 6,464,204	[13]	$ 6,547,551	[14]
Amortized cost	[1]	6,426,331	[13]	6,498,009	[14]
Fair value	[2]	$ 6,245,714	[13]	$ 6,547,551	[14]
Percentage of net assets		3.20%	[13]	3.90%	[14]
Investment, Identifier [Axis]: Clearview Systems, LLC (dba Rip-It) First Lien Senior Secured Term Loan SOFR Spread 7.65% Interest Rate 12.92% Due 10/11/2027
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:ClearviewSystemsLLCDbaRipItFirstLienSeniorSecuredTermLoanSOFRSpread760InterestRate1251Due10112027Member	[3],[15]	star:ClearviewSystemsLLCDbaRipItFirstLienSeniorSecuredTermLoanSOFRSpread760InterestRate1251Due10112027Member	[4]
Investment, Significant Unobservable Input [true false]		true	[15]	true
Basis spread on variable rate		7.65%	[3],[5],[15]	7.65%	[4],[6]
Interest Rate		12.92%	[3],[15]	12.24%	[4]
Acquisition date		Oct. 11, 2022	[3],[15]	Oct. 11, 2022	[4]
Maturity date		Oct. 11, 2027	[3],[15]	Oct. 11, 2027	[4]
Principal, Shares, Units		$ 6,452,101	[3],[15]	$ 6,452,101	[4]
Amortized cost	[1]	6,327,521	[3],[15]	6,314,472	[4]
Fair value	[2]	$ 5,968,838	[3],[15]	$ 6,318,303	[4]
Percentage of net assets		3.10%	[3],[15]	3.80%	[4]
Investment, Identifier [Axis]: Commercial Services & Supplies First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:CommercialServicesSuppliesFirstLienSeniorSecuredTermLoanMember		star:CommercialServicesSuppliesFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 10,930,620		$ 10,544,330
Amortized cost	[1]	10,796,413		10,397,880
Fair value	[2]	$ 10,751,233		$ 10,343,496
Percentage of net assets		5.60%		6.00%
Investment, Identifier [Axis]: Commercial Services and Supplies Preferred Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:CommercialServicesAndSuppliesPreferredEquitySecuritiesMember		star:CommercialServicesAndSuppliesPreferredEquitySecuritiesMember
Principal, Shares, Units		$ 192,444		$ 192,444
Amortized cost	[1]	183,612		183,612
Fair value	[2]	$ 230,249		$ 285,516
Percentage of net assets		0.10%		0.20%
Investment, Identifier [Axis]: Consolidated Machine & Tool Holdings, LLC First Lien Senior Secured Term Loan SOFR Spread 5.94% Plus 4.81% PIK Interest Rate 11.22% Plus 4.81% PIK Due 1/15/2025
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:ConsolidatedMachineToolHoldingsLLCFirstLienSeniorSecuredTermLoanSOFRSpread725Plus591PIKInterestRate1000Plus807PIKDue1152025Member	[3]	star:ConsolidatedMachineToolHoldingsLLCFirstLienSeniorSecuredTermLoanSOFRSpread725Plus591PIKInterestRate1000Plus807PIKDue1152025Member	[9],[15]
Investment, Significant Unobservable Input [true false]		true	[3]	true
Basis spread on variable rate		5.94%	[3],[5]	7.25%	[6],[9],[15]
Paid in Kind Basis Spread Variable Rate	[3],[5]	4.81%
Interest Rate		11.22%	[3]	12.02%	[9],[15]
PIK Interest Rate	[3]	4.81%
Acquisition date		Jan. 15, 2020	[3]	Jan. 15, 2020	[9],[15]
Maturity date		Jan. 15, 2025	[3]	Jan. 15, 2025	[9],[15]
Principal, Shares, Units		$ 7,601,939	[3]	$ 6,175,748	[9],[15]
Amortized cost	[1]	7,386,541	[3]	6,094,051	[9],[15]
Fair value	[2]	$ 7,234,765	[3]	$ 5,844,055	[9],[15]
Percentage of net assets		3.70%	[3]	3.40%	[9],[15]
Investment, Identifier [Axis]: Consolidated Machine & Tool Holdings, LLC Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:ConsolidatedMachineToolHoldingsLLCWarrantsAndOtherEquitySecuritiesMember	[16]	star:ConsolidatedMachineToolHoldingsLLCWarrantsAndOtherEquitySecuritiesMember	[17],[18]
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		0.00%	[5],[16]	0.00%	[6],[17],[18]
Interest Rate	[17],[18]			0.00%
Acquisition date		Jan. 15, 2020	[16]	Jan. 15, 2020	[17],[18]
Principal, Shares, Units		$ 176	[16]	$ 127	[17],[18]
Amortized cost	[1]	142,485	[16]	142,485	[17],[18]
Fair value	[2]	$ 21,618	[16]	$ 33,642	[17],[18]
Percentage of net assets		0.00%	[16]	0.00%	[17],[18]
Investment, Identifier [Axis]: Construction & Engineering First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:ConstructionEngineeringFirstLienSeniorSecuredTermLoanMember		star:ConstructionEngineeringFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 39,426,044		$ 35,240,560
Amortized cost	[1]	38,627,681		34,622,478
Fair value	[2]	$ 37,849,373		$ 33,632,137
Percentage of net assets		19.50%		20.30%
Investment, Identifier [Axis]: Construction & Engineering Preferred Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:ConstructionEngineeringPreferredEquitySecuritiesMember		star:ConstructionEngineeringPreferredEquitySecuritiesMember
Principal, Shares, Units		$ 3,968,849		$ 2,111,706
Amortized cost	[1]	5,152,236		3,291,909
Fair value	[2]	$ 3,694,377		$ 2,165,391
Percentage of net assets		1.90%		1.30%
Investment, Identifier [Axis]: Construction & Engineering Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:ConstructionEngineeringWarrantsAndOtherEquitySecuritiesMember		star:ConstructionEngineeringWarrantsAndOtherEquitySecuritiesMember
Principal, Shares, Units		$ 1,117		$ 1,168
Amortized cost	[1]	939,949		939,949
Fair value	[2]	$ 1,656,044		$ 1,098,242
Percentage of net assets		0.90%		0.60%
Investment, Identifier [Axis]: Consumer Finance First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:ConsumerFinanceFirstLienSeniorSecuredTermLoanMember		star:ConsumerFinanceFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 3,462,993		$ 3,481,009
Amortized cost	[1]	3,462,993		3,460,009
Fair value	[2]	$ 3,462,993		$ 3,481,008
Percentage of net assets		1.80%		2.20%
Investment, Identifier [Axis]: Consumer Finance Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:ConsumerFinanceWarrantsAndOtherEquitySecuritiesMember		star:ConsumerFinanceWarrantsAndOtherEquitySecuritiesMember
Principal, Shares, Units		$ 164,332		$ 164,332
Amortized cost	[1]	0		0
Fair value	[2]	$ 296,260		$ 355,814
Percentage of net assets		0.20%		0.20%
Investment, Identifier [Axis]: Coop Home Goods LLC (dba Coop Home Goods) First Lien Senior Secured Term Loan SOFR Spread 8.26% Interest Rate 13.53% Due 6/18/2026
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[15]	star:CoopHomeGoodsLLCDbaCoopHomeGoodsFirstLienSeniorSecuredTermLoanSOFRSpread826InterestRate1317Due6182021Member	[3]	star:CoopHomeGoodsLLCDbaCoopHomeGoodsFirstLienSeniorSecuredTermLoanSOFRSpread826InterestRate1317Due6182021Member	[4]
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate	[15]	8.26%	[3],[5]	8.26%	[4],[6]
Interest Rate	[15]	13.53%	[3]	12.85%	[4]
Acquisition date	[15]	Jun. 18, 2021	[3]	Jun. 18, 2021	[4]
Maturity date	[15]	Jun. 18, 2026	[3]	Jun. 18, 2026	[4]
Principal, Shares, Units	[15]	$ 4,387,729	[3]	$ 4,385,303	[4]
Amortized cost	[1],[15]	4,325,335	[3]	4,319,885	[4]
Fair value	[2],[15]	$ 4,199,934	[3]	$ 3,917,365	[4]
Percentage of net assets	[15]	2.20%	[3]	2.40%	[4]
Investment, Identifier [Axis]: CorTech, LLC Second Lien Senior Secured Loan LIBOR Spread 6.25% Interest Rate 11.80% Due 9/30/2025
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:CorTechLLCSecondLienSeniorSecuredLoanLIBORSpread625InterestRate1144Due9302025Member	[10]	star:CorTechLLCSecondLienSeniorSecuredLoanLIBORSpread625InterestRate1144Due9302025Member	[9]
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		6.25%	[5],[10]	6.25%	[6],[9]
Interest Rate		11.80%	[10]	11.02%	[9]
Acquisition date		Mar. 13, 2020	[10]	Mar. 13, 2020	[9]
Maturity date		Sep. 30, 2025	[10]	Sep. 30, 2025	[9]
Principal, Shares, Units		$ 6,461,338	[10]	$ 6,563,134	[9]
Amortized cost	[1]	6,442,027	[10]	6,522,877	[9]
Fair value	[2]	$ 6,201,918	[10]	$ 6,250,270	[9]
Percentage of net assets		3.20%	[10]	3.80%	[9]
Investment, Identifier [Axis]: DCCM, LLC First Lien Senior Secured Term Loan LIBOR Spread 7.16% Interest Rate 12.43% Due 12/30/2026
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:DCCMLLCFirstLienSeniorSecuredTermLoanLIBORSpread690InterestRate1209Due12302026Member	[3]	star:DCCMLLCFirstLienSeniorSecuredTermLoanLIBORSpread690InterestRate1209Due12302026Member	[9]
Investment, Significant Unobservable Input [true false]		true	[3]	true
Basis spread on variable rate		7.16%	[3],[5]	6.90%	[6],[9]
Interest Rate		12.43%	[3]	11.67%	[9]
Acquisition date		Aug. 06, 2021	[3]	Aug. 06, 2021	[9]
Maturity date		Dec. 30, 2026	[3]	Dec. 30, 2026	[9]
Principal, Shares, Units		$ 18,772,644	[3]	$ 18,938,595	[9]
Amortized cost	[1]	18,369,041	[3]	18,603,528	[9]
Fair value	[2]	$ 18,434,737	[3]	$ 18,838,220	[9]
Percentage of net assets		9.50%	[3]	11.30%	[9]
Investment, Identifier [Axis]: DCCM, LLC Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:DCCMLLCWarrantsAndOtherEquitySecuritiesMember		star:DCCMLLCWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		0.00%	[5]	0.00%	[6]
Interest Rate				0.00%
Acquisition date		Aug. 06, 2021		Aug. 06, 2021
Principal, Shares, Units		$ 897		$ 940
Amortized cost	[1]	939,949		939,949
Fair value	[2]	$ 962,894		$ 907,451
Percentage of net assets		0.50%		0.50%
Investment, Identifier [Axis]: Distributors First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:DistributorsFirstLienSeniorSecuredTermLoanMember		star:DistributorsFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 14,924,812		$ 14,962,500
Amortized cost	[1]	14,379,819		14,383,702
Fair value	[2]	$ 14,606,914		$ 14,383,702
Percentage of net assets		7.50%		8.70%
Investment, Identifier [Axis]: Diversified Consumer Services First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:DiversifiedConsumerServicesFirstLienSeniorSecuredTermLoanMember		star:DiversifiedConsumerServicesFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 15,410,533		$ 14,456,337
Amortized cost	[1]	15,280,461		14,281,403
Fair value	[2]	$ 15,410,533		$ 14,400,081
Percentage of net assets		7.90%		8.80%
Investment, Identifier [Axis]: Diversified Consumer Services Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:DiversifiedConsumerServicesWarrantsAndOtherEquitySecuritiesMember		star:DiversifiedConsumerServicesWarrantsAndOtherEquitySecuritiesMember
Principal, Shares, Units		$ 12,693		$ 12,693
Amortized cost	[1]	0		0
Fair value	[2]	$ 133,486		$ 102,210
Percentage of net assets		0.10%		0.10%
Investment, Identifier [Axis]: Diversified Financials Fund Investments
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:DiversifiedFinancialsFundInvestmentsMember		star:DiversifiedFinancialsFundInvestmentsMember
Principal, Shares, Units		$ 2,855,855		$ 2,855,855
Amortized cost	[1]	2,855,855		2,855,855
Fair value	[2]	$ 3,170,166		$ 3,045,128
Percentage of net assets		1.60%		1.80%
Investment, Identifier [Axis]: Diversified Telecommunication Services First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:DiversifiedTelecommunicationServicesFirstLienSeniorSecuredTermLoanMember		star:DiversifiedTelecommunicationServicesFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 24,096,507		$ 13,955,483
Amortized cost	[1]	23,373,799		13,368,809
Fair value	[2]	$ 22,913,064		$ 12,633,810
Percentage of net assets		11.80%		7.70%
Investment, Identifier [Axis]: Diversified Telecommunication Services Preferred Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:DiversifiedTelecommunicationServicesPreferredEquitySecuritiesMember		star:DiversifiedTelecommunicationServicesPreferredEquitySecuritiesMember
Principal, Shares, Units		$ 4,262,013		$ 302,036
Amortized cost	[1]	3,080,263		2,191,398
Fair value	[2]	$ 4,949,131		$ 2,499,374
Percentage of net assets		2.60%		1.50%
Investment, Identifier [Axis]: Diversified Telecommunication Services Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:DiversifiedTelecommunicationServicesWarrantsAndOtherEquitySecuritiesMember		star:DiversifiedTelecommunicationServicesWarrantsAndOtherEquitySecuritiesMember
Principal, Shares, Units		$ 314,277		$ 314,277
Amortized cost	[1]	443,392		443,392
Fair value	[2]	$ 2,394,524		$ 2,108,361
Percentage of net assets		1.20%		1.30%
Investment, Identifier [Axis]: Electrical Equipment First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:ElectricalEquipmentFirstLienSeniorSecuredTermLoanMember		star:ElectricalEquipmentFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 8,219,565		$ 8,260,870
Amortized cost	[1]	8,088,197		8,099,828
Fair value	[2]	$ 8,014,076		$ 8,099,828
Percentage of net assets		4.10%		4.90%
Investment, Identifier [Axis]: Electrical Equipment Senior Unsecured Notes
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:ElectricalEquipmentSeniorUnsecuredNotesMember		star:ElectricalEquipmentSeniorUnsecuredNotesMember
Principal, Shares, Units		$ 1,907,877		$ 1,771,739
Amortized cost	[1]	1,873,094		1,736,957
Fair value	[2]	$ 1,594,222		$ 1,736,957
Percentage of net assets		0.80%		1.00%
Investment, Identifier [Axis]: Electrical Equipment Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:ElectricalEquipmentWarrantsAndOtherEquitySecuritiesMember		star:ElectricalEquipmentWarrantsAndOtherEquitySecuritiesMember
Principal, Shares, Units		$ 190,019		$ 190,019
Amortized cost	[1]	0		0
Fair value	[2]	$ 154,435		$ 0
Percentage of net assets		0.10%		0.00%
Investment, Identifier [Axis]: Entertainment First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:EntertainmentFirstLienSeniorSecuredTermLoanMember		star:EntertainmentFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 17,630,767		$ 17,767,237
Amortized cost	[1]	17,374,567		17,531,800
Fair value	[2]	$ 17,321,777		$ 17,666,766
Percentage of net assets		8.90%		10.60%
Investment, Identifier [Axis]: Entertainment Preferred Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:EntertainmentPreferredEquitySecuritiesMember		star:EntertainmentPreferredEquitySecuritiesMember
Principal, Shares, Units		$ 970		$ 970
Amortized cost	[1]	955,843		955,843
Fair value	[2]	$ 986,761		$ 955,843
Percentage of net assets		0.50%		0.60%
Investment, Identifier [Axis]: Entertainment Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:EntertainmentWarrantsAndOtherEquitySecuritiesMember		star:EntertainmentWarrantsAndOtherEquitySecuritiesMember
Principal, Shares, Units		$ 2		$ 2
Amortized cost	[1]	43,478		43,478
Fair value	[2]	$ 550,442		$ 542,730
Percentage of net assets		0.30%		0.30%
Investment, Identifier [Axis]: Food Products First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:FoodProductsFirstLienSeniorSecuredTermLoanMember		star:FoodProductsFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 5,423,341		$ 5,469,309
Amortized cost	[1]	5,323,724		5,368,762
Fair value	[2]	$ 5,390,801		$ 5,370,764
Percentage of net assets		2.80%		3.20%
Investment, Identifier [Axis]: Food Products Preferred Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:FoodProductsPreferredEquitySecuritiesMember		star:FoodProductsPreferredEquitySecuritiesMember
Principal, Shares, Units		$ 1,489,362		$ 1,489,362
Amortized cost	[1]	1,489,362		1,489,362
Fair value	[2]	$ 1,844,723		$ 1,572,766
Percentage of net assets		0.90%		0.90%
Investment, Identifier [Axis]: Food Products Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:FoodProductsWarrantsAndOtherEquitySecuritiesMember		star:FoodProductsWarrantsAndOtherEquitySecuritiesMember
Principal, Shares, Units		$ 127,215		$ 127,215
Amortized cost	[1]	0		0
Fair value	[2]	$ 16,979		$ 9,830
Percentage of net assets		0.00%		0.00%
Investment, Identifier [Axis]: Fremont-Wright, LLC First Lien Senior Secured Term Loan LIBOR Spread 9.00% Interest Rate 14.22% Due 12/2/2024
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:FremontWrightLLCFirstLienSeniorSecuredTermLoanLIBORSpread900InterestRate1386Due1222024Member	[13]	star:FremontWrightLLCFirstLienSeniorSecuredTermLoanLIBORSpread900InterestRate1386Due1222024Member	[14]
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		9.00%	[5],[13]	9.00%	[6],[14]
Interest Rate		14.22%	[13]	13.39%	[14]
Acquisition date		Dec. 02, 2020	[13]	Dec. 02, 2020	[14]
Maturity date		Dec. 02, 2024	[13]	Dec. 02, 2024	[14]
Principal, Shares, Units		$ 4,343,750	[13]	$ 4,615,535	[14]
Amortized cost	[1]	4,316,255	[13]	4,579,554	[14]
Fair value	[2]	$ 4,316,255	[13]	$ 4,580,171	[14]
Percentage of net assets		2.20%	[13]	2.80%	[14]
Investment, Identifier [Axis]: Fremont-Wright, LLC Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:FremontWrightLLCWarrantsAndOtherEquitySecuritiesMember		star:FremontWrightLLCWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		0.00%	[5]	0.00%	[6]
Interest Rate				0.00%
Acquisition date		Dec. 02, 2020		Dec. 02, 2020
Principal, Shares, Units		$ 2		$ 2
Amortized cost	[1]	0		0
Fair value	[2]	$ 693,150		$ 179,048
Percentage of net assets		0.40%		0.10%
Investment, Identifier [Axis]: Fund Investments
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]				Fund Investments [Member]
Investment, Type [Extensible Enumeration]		Fund Investments [Member]
Amortized cost	[1]	$ 2,855,855		$ 2,855,855
Fair value	[2]	$ 3,170,166		$ 3,045,128
Percentage of net assets		1.60%		1.80%
Investment, Identifier [Axis]: Gateway Dealer Network, LLC First Lien Senior Secured Term Loan SOFR Spread 6.35% Interest Rate 11.49% Due 6/30/2027
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[15]	star:GatewayDealerNetworkLLCFirstLienSeniorSecuredTermLoanSpread635InterestRate1115Due6302027Member	[19]	star:GatewayDealerNetworkLLCFirstLienSeniorSecuredTermLoanSpread635InterestRate1115Due6302027Member	[20]
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate	[15]	6.35%	[5],[19]	7.85%	[6],[20]
Interest Rate	[15]	11.49%	[19]	12.21%	[20]
Acquisition date	[15]	Jun. 30, 2022	[19]	Jun. 30, 2022	[20]
Maturity date	[15]	Jun. 30, 2027	[19]	Jun. 30, 2027	[20]
Principal, Shares, Units	[15]	$ 8,761,363	[19]	$ 9,831,500	[20]
Amortized cost	[1],[15]	8,647,957	[19]	9,696,610	[20]
Fair value	[2],[15]	$ 8,761,363	[19]	$ 9,831,500	[20]
Percentage of net assets	[15]	4.50%	[19]	6.00%	[20]
Investment, Identifier [Axis]: Gridsource Holdings, LLC Preferred Equity Securities Interest Rate 8.00% PIK
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:GridsourceHoldingsLLCPreferredEquitySecuritiesInterestRate800PIKMember
Investment, Significant Unobservable Input [true false]		true
PIK Interest Rate		8.00%
Acquisition date		Mar. 09, 2023
Principal, Shares, Units		$ 3,959,977
Amortized cost	[1]	799,597
Fair value	[2]	$ 1,183,583
Percentage of net assets		0.60%
Investment, Identifier [Axis]: Gridsource Incorporated, LLC First Lien Senior Secured Term Loan SOFR Spread 8.50% Interest Rate 13.77% Due 12/16/2027
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:GridsourceIncorporatedLLCFirstLienSeniorSecuredTermLoanSOFRSpread850InterestRate1341Due12162027Member	[3]	star:GridsourceIncorporatedLLCFirstLienSeniorSecuredTermLoanSOFRSpread850InterestRate1341Due12162027Member	[4],[9]
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		8.50%	[3],[5]	8.00%	[4],[6],[9]
Interest Rate		13.77%	[3]	12.59%	[4],[9]
Acquisition date		Dec. 16, 2022	[3]	Dec. 16, 2022	[4],[9]
Maturity date		Dec. 16, 2027	[3]	Dec. 16, 2027	[4],[9]
Principal, Shares, Units		$ 14,180,912	[3]	$ 4,444,444	[4],[9]
Amortized cost	[1]	13,795,037	[3]	4,281,250	[4],[9]
Fair value	[2]	$ 13,965,362	[3]	$ 4,281,250	[4],[9]
Percentage of net assets		7.20%	[3]	2.60%	[4],[9]
Investment, Identifier [Axis]: HH Masterwork Intermediate, Inc. Senior Unsecured Notes Interest Rate 15.00% PIK Due 5/17/2028
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:HHMasterworkIntermediateIncSeniorUnsecuredNotesInterestRate1500PIKDue5172028Member		star:HHMasterworkIntermediateIncSeniorUnsecuredNotesInterestRate1500PIKDue5172028Member
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate	[6]			0.00%
Interest Rate				15.00%
PIK Interest Rate		15.00%
Acquisition date		Nov. 17, 2022		Nov. 17, 2022
Maturity date		May 17, 2028		Nov. 17, 2027
Principal, Shares, Units		$ 1,907,877		$ 1,771,739
Amortized cost	[1]	1,873,094		1,736,957
Fair value	[2]	$ 1,594,222		$ 1,736,957
Percentage of net assets		0.80%		1.00%
Investment, Identifier [Axis]: HH Masterwork Intermediate, Inc. Warrants and Other Equity Securities Due 11/17/2027
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:HHMasterworkIntermediateIncWarrantsAndOtherEquitySecuritiesDue11172027Member		star:HHMasterworkIntermediateIncWarrantsAndOtherEquitySecuritiesDue11172027Member
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		0.00%	[5]	0.00%	[6]
Interest Rate				0.00%
Acquisition date		Nov. 17, 2022		Nov. 17, 2022
Maturity date		Nov. 17, 2027		Nov. 17, 2027
Principal, Shares, Units		$ 190,019		$ 190,019
Amortized cost	[1]	0		0
Fair value	[2]	$ 154,435		$ 0
Percentage of net assets		0.10%		0.00%
Investment, Identifier [Axis]: Healthcare Providers & Services First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:HealthcareProvidersServicesFirstLienSeniorSecuredTermLoanMember		star:HealthcareProvidersServicesFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 43,572,382		$ 15,708,269
Amortized cost	[1]	42,235,836		15,452,207
Fair value	[2]	$ 40,758,012		$ 14,607,782
Percentage of net assets		20.80%		8.80%
Investment, Identifier [Axis]: Healthcare Providers & Services Preferred Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:HealthcareProvidersServicesPreferredEquitySecuritiesMember		star:HealthcareProvidersServicesPreferredEquitySecuritiesMember
Principal, Shares, Units		$ 573,002		$ 571,080
Amortized cost	[1]	2,561,617		562,921
Fair value	[2]	$ 2,368,064		$ 578,101
Percentage of net assets		1.20%		0.30%
Investment, Identifier [Axis]: Healthcare Providers & Services Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:HealthcareProvidersServicesWarrantsAndOtherEquitySecuritiesMember
Principal, Shares, Units		$ 182
Amortized cost	[1]	419,877
Fair value	[2]	$ 419,877
Percentage of net assets		0.20%
Investment, Identifier [Axis]: Hometown Holdings JV, LLC (dba BWG Strategy) Preferred Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[12]	star:HometownHoldingsJVLLCDbaBWGStrategyPreferredEquitySecuritiesMember		star:HometownHoldingsJVLLCDbaBWGStrategyPreferredEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]		true		true	[12]
Basis spread on variable rate	[6],[12]			0.00%
Interest Rate	[12]	0.00%		0.00%
Acquisition date	[12]	Dec. 24, 2020		Dec. 24, 2020
Principal, Shares, Units	[12]	$ 666,667		$ 666,667
Amortized cost	[1],[12]	659,086		657,811
Fair value	[2],[12]	$ 841,533		$ 844,400
Percentage of net assets	[12]	0.40%		0.50%
Investment, Identifier [Axis]: Hotels, Restaurants & Leisure First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:HotelsRestaurantsLeisureFirstLienSeniorSecuredTermLoanMember		star:HotelsRestaurantsLeisureFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 5,016,807		$ 5,042,017
Amortized cost	[1]	4,868,125		4,876,933
Fair value	[2]	$ 4,899,915		$ 4,848,856
Percentage of net assets		2.50%		2.90%
Investment, Identifier [Axis]: Hotels, Restaurants & Leisure Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:HotelsRestaurantsLeisureWarrantsAndOtherEquitySecuritiesMember		star:HotelsRestaurantsLeisureWarrantsAndOtherEquitySecuritiesMember
Principal, Shares, Units		$ 21,210		$ 21,210
Amortized cost	[1]	71,599		71,599
Fair value	[2]	$ 46,052		$ 70,590
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]		star:HouseholdDurablesFirstLienSeniorSecuredTermLoanMember		star:HouseholdDurablesFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 4,587,429		$ 4,839,432
Amortized cost	[1]	4,523,030		4,380,844
Fair value	[2]	$ 2,293,714		$ 2,586,687
Percentage of net assets		1.20%		1.60%
Investment, Identifier [Axis]: Household Durables Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:HouseholdDurablesWarrantsAndOtherEquitySecuritiesMember		star:HouseholdDurablesWarrantsAndOtherEquitySecuritiesMember
Principal, Shares, Units		$ 1,576,993		$ 1,199,975
Amortized cost	[1]	0		0
Fair value	[2]	$ 0		$ 0
Percentage of net assets		0.00%		0.00%
Investment, Identifier [Axis]: Household Products First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:HouseholdProductsFirstLienSeniorSecuredTermLoanMember		star:HouseholdProductsFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 4,387,729		$ 4,385,303
Amortized cost	[1]	4,325,335		4,319,885
Fair value	[2]	$ 4,199,934		$ 3,917,365
Percentage of net assets		2.20%		2.40%
Investment, Identifier [Axis]: Household Products Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:HouseholdProductsWarrantsAndOtherEquitySecuritiesMember		star:HouseholdProductsWarrantsAndOtherEquitySecuritiesMember
Principal, Shares, Units		$ 535,714		$ 535,714
Amortized cost	[1]	535,714		535,714
Fair value	[2]	$ 0		$ 156,607
Percentage of net assets		0.00%		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 13.28% Due 1/9/2028
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[3]	star:IPAIntermediateCoLLCDbaIntegratedPainAssociatesFirstLienSeniorSecuredTermLoanSOFRSpread801InterestRate1292Due192028Member
Investment, Significant Unobservable Input [true false]	[3]	true
Basis spread on variable rate	[3],[5]	8.01%
Interest Rate	[3]	13.28%
Acquisition date	[3]	Jan. 09, 2023
Maturity date	[3]	Jan. 09, 2028
Principal, Shares, Units	[3]	$ 11,265,924
Amortized cost	[1],[3]	10,980,322
Fair value	[2],[3]	$ 10,959,950
Percentage of net assets	[3]	5.60%
Investment, Identifier [Axis]: IPA Investors, LP Preferred Equity Securities Interest Rate 8.00% PIK
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:IPAInvestorsLPPreferredEquitySecuritiesInterestRate800PIKMember
Investment, Significant Unobservable Input [true false]		true
PIK Interest Rate		8.00%
Acquisition date		Jan. 09, 2023
Principal, Shares, Units		$ 1,922
Amortized cost	[1]	1,997,838
Fair value	[2]	$ 1,995,560
Percentage of net assets		1.00%
Investment, Identifier [Axis]: IT Services First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:ITServicesFirstLienSeniorSecuredTermLoanMember		star:ITServicesFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 13,715,253		$ 14,100,695
Amortized cost	[1]	13,475,127		13,842,228
Fair value	[2]	$ 13,715,253		$ 14,001,990
Percentage of net assets		7.00%		8.40%
Investment, Identifier [Axis]: Investments First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Type [Extensible Enumeration]		Investments First Lien Senior Secured Term Loan [Member]		Investments First Lien Senior Secured Term Loan [Member]
Amortized cost	[1]	$ 306,665,032		$ 265,743,871
Fair value	[2]	$ 300,442,483		$ 260,982,122
Percentage of net assets		154.50%		157.30%
Investment, Identifier [Axis]: Investments Second Lien Senior Secured Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:InvestmentsSecondLienSeniorSecuredLoanMember
Investment, Type [Extensible Enumeration]				star:InvestmentsSecondLienSeniorSecuredLoanMember
Amortized cost	[1]	$ 6,442,027		$ 6,522,877
Fair value	[2]	$ 6,201,918		$ 6,250,270
Percentage of net assets		3.20%		3.80%
Investment, Identifier [Axis]: Japonesque, LLC First Lien Senior Secured Term Loan SOFR Spread 8.18% Plus 1.50 % PIK Interest Rate 13.45% Due 11/23/2026
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[15]	star:JaponesqueLLCFirstLienSeniorSecuredTermLoanSOFRSpread818InterestRate1309Plus200PIKDue11232026Member	[3]	star:JaponesqueLLCFirstLienSeniorSecuredTermLoanSOFRSpread818InterestRate1309Plus200PIKDue11232026Member	[9]
Investment, Significant Unobservable Input [true false]		true	[3],[15]	true
Basis spread on variable rate	[15]	8.18%	[3],[5]	8.00%	[6],[9]
Paid in Kind Basis Spread Variable Rate	[3],[5],[15]	1.50%
Interest Rate	[15]	13.45%	[3]	12.77%	[9]
Acquisition date	[15]	Nov. 23, 2021	[3]	Nov. 23, 2021	[9]
Maturity date	[15]	Nov. 23, 2026	[3]	Nov. 23, 2026	[9]
Principal, Shares, Units	[15]	$ 4,535,593	[3]	$ 4,549,112	[9]
Amortized cost	[1],[15]	4,476,011	[3]	4,480,452	[9]
Fair value	[2],[15]	$ 4,430,367	[3]	$ 4,335,304	[9]
Percentage of net assets	[15]	2.30%	[3]	2.60%	[9]
Investment, Identifier [Axis]: Klein Hersh, LLC First Lien Senior Secured Term Loan SOFR Spread 7.76% Interest Rate 4.63% Plus 8.41% PIK Due 4/27/2027
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[15]	star:KleinHershLLCFirstLienSeniorSecuredTermLoanSOFRSpread1076InterestRate463Plus1105PIKDue4272027Member	[3]	star:KleinHershLLCFirstLienSeniorSecuredTermLoanSOFRSpread1076InterestRate463Plus1105PIKDue4272027Member	[4]
Investment, Significant Unobservable Input [true false]		true	[3],[15]	true
Basis spread on variable rate	[15]	7.76%	[3],[5]	7.76%	[4],[6]
Interest Rate	[15]	4.63%	[3]	12.35%	[4]
PIK Interest Rate	[3],[15]	8.41%
Acquisition date	[15]	Apr. 27, 2022	[3]	Apr. 27, 2022	[4]
Maturity date	[15]	Apr. 27, 2027	[3]	Apr. 27, 2027	[4]
Principal, Shares, Units	[15]	$ 15,586,219	[3]	$ 14,824,494	[4]
Amortized cost	[1],[15]	14,929,077	[3]	14,582,709	[4]
Fair value	[2],[15]	$ 13,491,431	[3]	$ 13,756,353	[4]
Percentage of net assets	[15]	6.90%	[3]	8.30%	[4]
Investment, Identifier [Axis]: LRI Holdco, LLC (dba Linden Labs) Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:LRIHoldcoLLCDbaLindenLabsWarrantsAndOtherEquitySecuritiesMember		star:LRIHoldcoLLCDbaLindenLabsWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		0.00%	[5]	0.00%	[6]
Interest Rate				0.00%
Acquisition date		Dec. 31, 2020		Dec. 31, 2020
Principal, Shares, Units		$ 2		$ 2
Amortized cost	[1]	43,478		43,478
Fair value	[2]	$ 550,442		$ 542,730
Percentage of net assets		0.30%		0.30%
Investment, Identifier [Axis]: Lasalle Staffing, LLC First Lien Senior Secured Term Loan SOFR Spread 6.86% Interest Rate 12.00% Due 2/15/2027
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[15]	star:LasalleStaffingLLCFirstLienSeniorSecuredTermLoanSOFRSpread711InterestRate1191Due2152027Member	[19]	star:LasalleStaffingLLCFirstLienSeniorSecuredTermLoanSOFRSpread711InterestRate1191Due2152027Member	[20]
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate	[15]	6.86%	[5],[19]	7.11%	[6],[20]
Interest Rate	[15]	12.00%	[19]	11.47%	[20]
Acquisition date	[15]	Feb. 15, 2022	[19]	Feb. 15, 2022	[20]
Maturity date	[15]	Feb. 15, 2027	[19]	Feb. 15, 2027	[20]
Principal, Shares, Units	[15]	$ 7,511,888	[19]	$ 7,925,000	[20]
Amortized cost	[1],[15]	7,360,814	[19]	7,753,501	[20]
Fair value	[2],[15]	$ 7,489,353	[19]	$ 7,925,000	[20]
Percentage of net assets	[15]	3.80%	[19]	4.80%	[20]
Investment, Identifier [Axis]: Leisure Products First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:LeisureProductsFirstLienSeniorSecuredTermLoanMember		star:LeisureProductsFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 4,031,332		$ 4,247,780
Amortized cost	[1]	3,973,959		4,186,414
Fair value	[2]	$ 3,955,946		$ 4,229,089
Percentage of net assets		2.00%		2.50%
Investment, Identifier [Axis]: Leisure Products Preferred Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:LeisureProductsPreferredEquitySecuritiesMember		star:LeisureProductsPreferredEquitySecuritiesMember
Principal, Shares, Units		$ 13		$ 13
Amortized cost	[1]	564,645		564,645
Fair value	[2]	$ 564,618		$ 564,618
Percentage of net assets		0.30%		0.30%
Investment, Identifier [Axis]: Linden Research, Inc. (dba Linden Labs) First Lien Senior Secured Term Loan SOFR Spread 8.26% Plus 3.25% PIK Interest Rate 13.53% Plus 3.25 PIK Due 12/31/2025
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[15]	star:LindenResearchIncDbaLindenLabsFirstLienSeniorSecuredTermLoanLIBORSpread850Plus161PIKInterestRate1519Plus161PIKDue12312025Member	[3]	star:LindenResearchIncDbaLindenLabsFirstLienSeniorSecuredTermLoanLIBORSpread850Plus161PIKInterestRate1519Plus161PIKDue12312025Member	[9]
Investment, Significant Unobservable Input [true false]		true	[3],[15]	true
Basis spread on variable rate	[15]	8.26%	[3],[5]	10.59%	[6],[9]
Paid in Kind Basis Spread Variable Rate	[15]	3.25%	[3],[5]	1.62%	[6],[9]
Interest Rate	[15]	13.53%	[3]	14.77%	[9]
PIK Interest Rate	[15]	3.25%	[3]	1.62%	[9]
Acquisition date	[15]	Dec. 31, 2020	[3]	Dec. 31, 2020	[9]
Maturity date	[15]	Dec. 31, 2025	[3]	Dec. 31, 2025	[9]
Principal, Shares, Units	[15]	$ 4,702,258	[3]	$ 4,690,085	[9]
Amortized cost	[1],[15]	4,597,056	[3]	4,618,458	[9]
Fair value	[2],[15]	$ 4,702,258	[3]	$ 4,703,236	[9]
Percentage of net assets	[15]	2.40%	[3]	2.80%	[9]
Investment, Identifier [Axis]: MPUSA, LLC (dba Mission) First Lien Senior Secured Term Loan LIBOR Spread 9.00% Interest Rate 14.55% Due 12/9/2026
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:MPUSALLCDbaMissionFirstLienSeniorSecuredTermLoanLIBORSpread900InterestRate1419Due1292026Member	[10]	star:MPUSALLCDbaMissionFirstLienSeniorSecuredTermLoanLIBORSpread900InterestRate1419Due1292026Member	[9]
Investment, Significant Unobservable Input [true false]		true	[10]	true
Basis spread on variable rate		9.00%	[5],[10]	8.50%	[6],[9]
Interest Rate		14.55%	[10]	13.27%	[9]
Acquisition date		Dec. 09, 2021	[10]	Dec. 09, 2021	[9]
Maturity date		Dec. 09, 2026	[10]	Dec. 09, 2026	[9]
Principal, Shares, Units		$ 4,031,332	[10]	$ 4,247,780	[9]
Amortized cost	[1]	3,973,959	[10]	4,186,414	[9]
Fair value	[2]	$ 3,955,946	[10]	$ 4,229,089	[9]
Percentage of net assets		2.00%	[10]	2.50%	[9]
Investment, Identifier [Axis]: MPUSA, LLC (dba Mission) Preferred Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:MPUSALLCDbaMissionPreferredEquitySecuritiesMember		star:MPUSALLCDbaMissionPreferredEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate	[6]			0.00%
Interest Rate		0.00%		0.00%
Acquisition date		Dec. 09, 2021		Dec. 09, 2021
Principal, Shares, Units		$ 13		$ 13
Amortized cost	[1]	564,645		564,645
Fair value	[2]	$ 564,618		$ 564,618
Percentage of net assets		0.30%		0.30%
Investment, Identifier [Axis]: Machinery First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:MachineryFirstLienSeniorSecuredTermLoanMember		star:MachineryFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 5,867,944		$ 6,096,210
Amortized cost	[1]	5,774,114		5,983,378
Fair value	[2]	$ 5,400,855		$ 5,384,172
Percentage of net assets		2.80%		3.20%
Investment, Identifier [Axis]: Machinery Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:MachineryWarrantsAndOtherEquitySecuritiesMember		star:MachineryWarrantsAndOtherEquitySecuritiesMember
Principal, Shares, Units		$ 1,602		$ 1,602
Amortized cost	[1]	0		0
Fair value	[2]	$ 1,373,871		$ 1,251,613
Percentage of net assets		0.70%		0.80%
Investment, Identifier [Axis]: Madryn Select Opportunities, LP Fund Investments
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:MadrynSelectOpportunitiesLPFundInvestmentsMember	[21]	star:MadrynSelectOpportunitiesLPFundInvestmentsMember	[22]
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		0.00%	[5],[21]	0.00%	[6],[22]
Interest Rate	[22]			0.00%
Acquisition date		Jan. 04, 2022	[21]	Jan. 04, 2022	[22]
Principal, Shares, Units		$ 2,855,855	[21]	$ 2,855,855	[22]
Amortized cost	[1]	2,855,855	[21]	2,855,855	[22]
Fair value	[2]	$ 3,170,166	[21]	$ 3,045,128	[22]
Percentage of net assets		1.60%	[21]	1.80%	[22]
Investment, Identifier [Axis]: Masterwork Electronics, Inc. First Lien Senior Secured Term Loan SOFR Spread 7.65% Interest Rate 12.92% Due 11/17/2027
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:MasterworkElectronicsIncFirstLienSeniorSecuredTermLoanSOFRSpread765InterestRate1256Due11172027Member	[3]	star:MasterworkElectronicsIncFirstLienSeniorSecuredTermLoanSOFRSpread765InterestRate1256Due11172027Member	[4]
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		7.65%	[3],[5]	7.65%	[4],[6]
Interest Rate		12.92%	[3]	12.24%	[4]
Acquisition date		Nov. 17, 2022	[3]	Nov. 17, 2022	[4]
Maturity date		Nov. 17, 2027	[3]	Nov. 17, 2027	[4]
Principal, Shares, Units		$ 8,219,565	[3]	$ 8,260,870	[4]
Amortized cost	[1]	8,088,197	[3]	8,099,828	[4]
Fair value	[2]	$ 8,014,076	[3]	$ 8,099,828	[4]
Percentage of net assets		4.10%	[3]	4.90%	[4]
Investment, Identifier [Axis]: MechanAir Holdings, LLC Preferred Equity Securities Interest Rate 13.50% PIK
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[12]	star:MechanAirHoldingsLLCPreferredEquitySecuritiesInterestRate1350PIKMember		star:MechanAirHoldingsLLCPreferredEquitySecuritiesInterestRate1350PIKMember
Investment, Significant Unobservable Input [true false]		true		true	[12]
Basis spread on variable rate	[6],[12]			0.00%
Interest Rate	[12]			13.50%
PIK Interest Rate	[12]	13.50%
Acquisition date	[12]	Sep. 02, 2021		Sep. 02, 2021
Principal, Shares, Units	[12]	$ 1,219		$ 1,219
Amortized cost	[1],[12]	1,219,441		1,219,441
Fair value	[2],[12]	$ 0		$ 0
Percentage of net assets	[12]	0.00%		0.00%
Investment, Identifier [Axis]: MechanAir, LLC First Lien Senior Secured Term Loan SOFR Spread 10.50% Interest Rate 15.77% Due 9/2/2026
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:MechanAirLLCFirstLienSeniorSecuredTermLoanLIBORSpread1050InterestRate1569Due922026Member	[3]	star:MechanAirLLCFirstLienSeniorSecuredTermLoanLIBORSpread1050InterestRate1569Due922026Member	[9]
Investment, Significant Unobservable Input [true false]		true	[3]	true
Basis spread on variable rate		10.50%	[3],[5]	10.50%	[6],[9]
Interest Rate		15.77%	[3]	15.27%	[9]
Acquisition date		Sep. 02, 2021	[3]	Sep. 02, 2021	[9]
Maturity date		Sep. 02, 2026	[3]	Sep. 02, 2026	[9]
Principal, Shares, Units		$ 8,085,096	[3]	$ 8,085,096	[9]
Amortized cost	[1]	7,927,809	[3]	7,904,767	[9]
Fair value	[2]	$ 7,148,842	[3]	$ 6,625,737	[9]
Percentage of net assets		3.70%	[3]	4.00%	[9]
Investment, Identifier [Axis]: Media First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:MediaFirstLienSeniorSecuredTermLoanMember		star:MediaFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 19,098,436		$ 19,230,850
Amortized cost	[1]	18,768,466		18,862,326
Fair value	[2]	$ 18,388,028		$ 19,203,458
Percentage of net assets		9.50%		11.60%
Investment, Identifier [Axis]: Media Preferred Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:MediaPreferredEquitySecuritiesMember		star:MediaPreferredEquitySecuritiesMember
Principal, Shares, Units		$ 3,474,456		$ 3,474,456
Amortized cost	[1]	4,712,738		4,565,171
Fair value	[2]	$ 6,293,658		$ 6,455,778
Percentage of net assets		3.20%		3.90%
Investment, Identifier [Axis]: Microf, LLC First Lien Senior Secured Term Loan LIBOR Spread 10.85% Interest Rate 16.12% Due 6/30/2025
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:MicrofLLCFirstLienSeniorSecuredTermLoanLIBORSpread1075InterestRate1594Due6302025Member	[3]	star:MicrofLLCFirstLienSeniorSecuredTermLoanLIBORSpread1075InterestRate1594Due6302025Member	[9]
Investment, Significant Unobservable Input [true false]		true	[3]	true
Basis spread on variable rate		10.85%	[3],[5]	10.75%	[6],[9]
Interest Rate		16.12%	[3]	15.52%	[9]
Acquisition date		Mar. 29, 2019	[3]	Mar. 29, 2019	[9]
Maturity date		Jun. 30, 2025	[3]	Jun. 30, 2023	[9]
Principal, Shares, Units		$ 3,462,993	[3]	$ 3,481,009	[9]
Amortized cost	[1]	3,462,993	[3]	3,460,009	[9]
Fair value	[2]	$ 3,462,993	[3]	$ 3,481,008	[9]
Percentage of net assets		1.80%	[3]	2.20%	[9]
Investment, Identifier [Axis]: Microf, LLC Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:MicrofLLCWarrantsAndOtherEquitySecuritiesMember		star:MicrofLLCWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		0.00%	[5]	0.00%	[6]
Interest Rate				0.00%
Acquisition date		May 05, 2020		May 05, 2020
Principal, Shares, Units		$ 164,332		$ 164,332
Amortized cost	[1]	0		0
Fair value	[2]	$ 296,260		$ 355,814
Percentage of net assets		0.20%		0.20%
Investment, Identifier [Axis]: NSC Holdings, LLC Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:NSCHoldingsLLCWarrantsAndOtherEquitySecuritiesMember		star:NSCHoldingsLLCWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		0.00%	[5]	0.00%	[6]
Interest Rate				0.00%
Acquisition date		Apr. 26, 2019		Apr. 26, 2019
Principal, Shares, Units		$ 111		$ 111
Amortized cost	[1]	271,262		271,262
Fair value	[2]	$ 229,499		$ 34,629
Percentage of net assets		0.10%		0.00%
Investment, Identifier [Axis]: NSC Technologies, LLC First Lien Senior Secured Term Loan LIBOR Spread 8.50% Interest Rate 14.05% Due 4/26/2024
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:NSCTechnologiesLLCFirstLienSeniorSecuredTermLoanLIBORSpread850InterestRate1369Due4262024Member	[10]	star:NSCTechnologiesLLCFirstLienSeniorSecuredTermLoanLIBORSpread850InterestRate1369Due4262024Member	[9]
Investment, Significant Unobservable Input [true false]		true	[10]	true
Basis spread on variable rate		8.50%	[5],[10]	8.50%	[6],[9]
Interest Rate		14.05%	[10]	13.27%	[9]
Acquisition date		Apr. 26, 2019	[10]	Apr. 26, 2019	[9]
Maturity date		Apr. 26, 2024	[10]	Apr. 26, 2024	[9]
Principal, Shares, Units		$ 4,356,132	[10]	$ 4,394,398	[9]
Amortized cost	[1]	4,326,201	[10]	4,352,849	[9]
Fair value	[2]	$ 4,353,083	[10]	$ 4,160,176	[9]
Percentage of net assets		2.20%	[10]	2.50%	[9]
Investment, Identifier [Axis]: NW Entertainment, LLC First Lien Senior Secured Term Loan SOFR Spread 7.76% Interest Rate 13.03% Due 11/4/2027
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:NWEntertainmentLLCFirstLienSeniorSecuredTermLoanSOFRSpread776InterestRate1267Due1142027Member	[3]	star:NWEntertainmentLLCFirstLienSeniorSecuredTermLoanSOFRSpread776InterestRate1267Due1142027Member	[4]
Investment, Significant Unobservable Input [true false]		true	[3]	true
Basis spread on variable rate		7.76%	[3],[5]	7.76%	[4],[6]
Interest Rate		13.03%	[3]	12.35%	[4]
Acquisition date		Nov. 04, 2022	[3]	Nov. 04, 2022	[4]
Maturity date		Nov. 04, 2027	[3]	Nov. 04, 2027	[4]
Principal, Shares, Units		$ 6,464,305	[3]	$ 6,529,601	[4]
Amortized cost	[1]	6,351,180	[3]	6,415,333	[4]
Fair value	[2]	$ 6,373,805	[3]	$ 6,415,979	[4]
Percentage of net assets		3.30%	[3]	3.90%	[4]
Investment, Identifier [Axis]: NW Entertainment, LLC Preferred Equity Securities Interest Rate 10.00% PIK
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:NWEntertainmentLLCPreferredEquitySecuritiesInterestRate1000PIKMember		star:NWEntertainmentLLCPreferredEquitySecuritiesInterestRate1000PIKMember
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate	[6]			0.00%
Interest Rate				10.00%
PIK Interest Rate		10.00%
Acquisition date		Nov. 04, 2022		Nov. 04, 2022
Maturity date				Nov. 04, 2027
Principal, Shares, Units		$ 970		$ 970
Amortized cost	[1]	955,843		955,843
Fair value	[2]	$ 986,761		$ 955,843
Percentage of net assets		0.50%		0.60%
Investment, Identifier [Axis]: Nurses Staffing, LLC First Lien Senior Secured Term Loan SOFR Spread 7.00% Plus 2.00 PIK Interest Rate 12.27 Plus 2.00% PIK Due 8/26/2028
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[3]	star:NursesStaffingLLCFirstLienSeniorSecuredTermLoanSOFRSpread700Plus200PIKInterestRate1227Plus200PIKDue8262028Member
Investment, Significant Unobservable Input [true false]	[3]	true
Basis spread on variable rate	[3],[5]	7.00%
Paid in Kind Basis Spread Variable Rate	[3],[5]	2.00%
Interest Rate	[3]	12.27%
PIK Interest Rate	[3]	2.00%
Acquisition date	[3]	May 26, 2023
Maturity date	[3]	Aug. 26, 2028
Principal, Shares, Units	[3]	$ 7,571,429
Amortized cost	[1],[3]	7,418,940
Fair value	[2],[3]	$ 7,418,940
Percentage of net assets	[3]	3.80%
Investment, Identifier [Axis]: Nurses Staffing, LLC Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:NursesStaffingLLCWarrantsAndOtherEquitySecuritiesDue5262023Member
Investment, Significant Unobservable Input [true false]		true
Basis spread on variable rate	[5]	0.00%
Acquisition date		May 26, 2023
Principal, Shares, Units		$ 182
Amortized cost	[1]	419,877
Fair value	[2]	$ 419,877
Percentage of net assets		0.20%
Investment, Identifier [Axis]: PPC Event Services , Inc. 2, First Lien Senior Secured Term Loan SOFR Spread 6.76% Interest Rate 12.03% Due 9/22/2027
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[3],[21]	star:PPCEventServicesInc2FirstLienSeniorSecuredTermLoanSOFRSpread676InterestRate1203Due9222027Member
Investment, Significant Unobservable Input [true false]	[3],[21]	true
Basis spread on variable rate	[3],[5],[21]	6.76%
Interest Rate	[3],[21]	12.03%
Acquisition date	[3],[21]	Sep. 22, 2022
Maturity date	[3],[21]	Sep. 22, 2027
Principal, Shares, Units	[3],[21]	$ 406,162
Amortized cost	[1],[3],[21]	406,162
Fair value	[2],[3],[21]	$ 406,162
Percentage of net assets	[3],[21]	0.20%
Investment, Identifier [Axis]: PPC Event Services, Inc. First Lien Senior Secured Term Loan SOFR Spread 6.76% Interest Rate 12.03% Due 9/22/2027
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:PPCEventServicesIncFirstLienSeniorSecuredTermLoanSOFRSpread651InterestRate1142Due9222027Member	[3],[21]	star:PPCEventServicesIncFirstLienSeniorSecuredTermLoanSOFRSpread651InterestRate1142Due9222027Member	[4],[22]
Investment, Significant Unobservable Input [true false]		true	[3],[21]	true
Basis spread on variable rate		6.76%	[3],[5],[21]	6.76%	[4],[6],[22]
Interest Rate		12.03%	[3],[21]	11.35%	[4],[22]
Acquisition date		Sep. 22, 2022	[3],[21]	Sep. 22, 2022	[4],[22]
Maturity date		Sep. 22, 2027	[3],[21]	Sep. 22, 2027	[4],[22]
Principal, Shares, Units		$ 6,539,442	[3],[21]	$ 6,555,917	[4],[22]
Amortized cost	[1]	6,460,405	[3],[21]	6,470,731	[4],[22]
Fair value	[2]	$ 6,539,442	[3],[21]	$ 6,429,432	[4],[22]
Percentage of net assets		3.40%	[3],[21]	3.80%	[4],[22]
Investment, Identifier [Axis]: PQT Ayaquhs, LLC (dba WWC Global) First Lien Senior Secured Term Loan SOFR Spread 7.76% Interest Rate 13.03% Due 8/1/2027
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:PQTAyaquhsLLCDbaWWCGlobalFirstLienSeniorSecuredTermLoanSOFRSpread826InterestRate1317Due812027Member	[3]	star:PQTAyaquhsLLCDbaWWCGlobalFirstLienSeniorSecuredTermLoanSOFRSpread826InterestRate1317Due812027Member	[4]
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		7.76%	[3],[5]	8.26%	[4],[6]
Interest Rate		13.03%	[3]	12.85%	[4]
Acquisition date		Aug. 01, 2022	[3]	Aug. 01, 2022	[4]
Maturity date		Aug. 01, 2027	[3]	Aug. 01, 2027	[4]
Principal, Shares, Units		$ 7,705,645	[3]	$ 7,804,435	[4]
Amortized cost	[1]	7,573,782	[3]	7,656,886	[4]
Fair value	[2]	$ 7,705,645	[3]	$ 7,656,151	[4]
Percentage of net assets		4.00%	[3]	4.60%	[4]
Investment, Identifier [Axis]: PQT Ayaquhs, LLC (dba WWC Global) Preferred Equity Securities Interest Rate 10.50% PIK
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[12]	star:PQTAyaquhsLLCDbaWWCGlobalPreferredEquitySecuritiesInterestRate1050PIKMember		star:PQTAyaquhsLLCDbaWWCGlobalPreferredEquitySecuritiesInterestRate1050PIKMember
Investment, Significant Unobservable Input [true false]		true		true	[12]
Basis spread on variable rate	[6],[12]			0.00%
Interest Rate	[12]			10.50%
PIK Interest Rate	[12]	10.50%
Acquisition date	[12]	Aug. 01, 2022		Aug. 01, 2022
Principal, Shares, Units	[12]	$ 5,774		$ 5,774
Amortized cost	[1],[12]	1,064,516		1,064,516
Fair value	[2],[12]	$ 2,923,871		$ 1,525,806
Percentage of net assets	[12]	1.50%		0.90%
Investment, Identifier [Axis]: PQT Ayaquhs, LLC (dba WWC Global) Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:PQTAyaquhsLLCDbaWWCGlobalWarrantsAndOtherEquitySecuritiesMember		star:PQTAyaquhsLLCDbaWWCGlobalWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		0.00%	[5]	0.00%	[6]
Interest Rate				0.00%
Acquisition date		Aug. 01, 2022		Aug. 01, 2022
Principal, Shares, Units		$ 645		$ 645
Amortized cost	[1]	0		0
Fair value	[2]	$ 215,484		$ 65,161
Percentage of net assets		0.10%		0.00%
Investment, Identifier [Axis]: PadSquad Holdings LLC (dba Padsquad) Preferred Equity Securities Interest Rate 6.00% Plus 6.00% PIK
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[12]	star:PadSquadHoldingsLLCDbaPadsquadPreferredEquitySecuritiesInterestRate600Plus600PIKMember		star:PadSquadHoldingsLLCDbaPadsquadPreferredEquitySecuritiesInterestRate600Plus600PIKMember
Investment, Significant Unobservable Input [true false]		true		true	[12]
Basis spread on variable rate	[6],[12]			0.00%
Interest Rate	[12]	6.00%		6.00%
PIK Interest Rate	[12]	6.00%		6.00%
Acquisition date	[12]	Mar. 30, 2022		Mar. 30, 2022
Principal, Shares, Units	[12]	$ 720,767		$ 720,767
Amortized cost	[1],[12]	1,962,963		1,960,647
Fair value	[2],[12]	$ 2,141,356		$ 2,079,054
Percentage of net assets	[12]	1.10%		1.30%
Investment, Identifier [Axis]: PadSquad, LLC First Lien Senior Secured Term Loan SOFR Spread 9.00% Interest Rate 14.27% Due 3/30/2027
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:PadSquadLLCFirstLienSeniorSecuredTermLoanSOFRSpread900InterestRate1391Due3302027Member	[3]	star:PadSquadLLCFirstLienSeniorSecuredTermLoanSOFRSpread900InterestRate1391Due3302027Member	[4]
Investment, Significant Unobservable Input [true false]		true	[3]	true
Basis spread on variable rate		9.00%	[3],[5]	9.00%	[4],[6]
Interest Rate		14.27%	[3]	13.59%	[4]
Acquisition date		Mar. 30, 2022	[3]	Mar. 30, 2022	[4]
Maturity date		Mar. 30, 2027	[3]	Mar. 30, 2027	[4]
Principal, Shares, Units		$ 4,681,754	[3]	$ 4,814,168	[4]
Amortized cost	[1]	4,605,409	[3]	4,727,179	[4]
Fair value	[2]	$ 4,578,288	[3]	$ 4,814,168	[4]
Percentage of net assets		2.40%	[3]	2.90%	[4]
Investment, Identifier [Axis]: Personal Products First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:PersonalProductsFirstLienSeniorSecuredTermLoanMember		star:PersonalProductsFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 4,535,593		$ 4,549,112
Amortized cost	[1]	4,476,011		4,480,452
Fair value	[2]	$ 4,430,367		$ 4,335,304
Percentage of net assets		2.30%		2.60%
Investment, Identifier [Axis]: Preferred equity securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]				Preferred Equity Securities [Member]
Investment, Type [Extensible Enumeration]		Preferred Equity Securities [Member]
Amortized cost	[1]	$ 26,487,843		$ 23,263,729
Fair value	[2]	$ 31,765,981		$ 27,088,732
Percentage of net assets		16.20%		16.10%
Investment, Identifier [Axis]: Proactive Dealer Holdings Parent, LLC Preferred Equity Securities Interest Rate 10.00% PIK
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:ProactiveDealerHoldingsParentLLCPreferredEquitySecuritiesInterestRate1000PIKMember		star:ProactiveDealerHoldingsParentLLCPreferredEquitySecuritiesInterestRate1000PIKMember
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate	[6]			0.00%
Interest Rate				10.00%
PIK Interest Rate		10.00%
Acquisition date		Dec. 27, 2021		Dec. 27, 2021
Principal, Shares, Units		$ 1,141,205		$ 1,263,821
Amortized cost	[1]	1,328,162		1,263,821
Fair value	[2]	$ 1,744,127		$ 1,384,601
Percentage of net assets		0.90%		0.80%
Investment, Identifier [Axis]: Proactive Dealer Solutions, LLC First Lien Senior Secured Term Loan LIBOR Spread 10.00% Interest Rate 15.55% Due 12/26/2026
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:ProactiveDealerSolutionsLLCFirstLienSeniorSecuredTermLoanLIBORSpread1000InterestRate1519Due12262026Member	[10]	star:ProactiveDealerSolutionsLLCFirstLienSeniorSecuredTermLoanLIBORSpread1000InterestRate1519Due12262026Member	[9]
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		10.00%	[5],[10]	10.00%	[6],[9]
Interest Rate		15.55%	[10]	14.77%	[9]
Acquisition date		Dec. 27, 2021	[10]	Dec. 27, 2021	[9]
Maturity date		Dec. 26, 2026	[10]	Dec. 26, 2026	[9]
Principal, Shares, Units		$ 3,164,049	[10]	$ 3,253,483	[9]
Amortized cost	[1]	3,104,160	[10]	3,186,456	[9]
Fair value	[2]	$ 3,164,049	[10]	$ 3,253,483	[9]
Percentage of net assets		1.60%	[10]	2.00%	[9]
Investment, Identifier [Axis]: Professional Services First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:ProfessionalServicesFirstLienSeniorSecuredTermLoanMember		star:ProfessionalServicesFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 19,573,665		$ 20,123,833
Amortized cost	[1]	19,260,797		19,763,236
Fair value	[2]	$ 19,548,081		$ 19,741,327
Percentage of net assets		10.00%		11.90%
Investment, Identifier [Axis]: Professional Services Preferred Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:ProfessionalServicesPreferredEquitySecuritiesMember		star:ProfessionalServicesPreferredEquitySecuritiesMember
Principal, Shares, Units		$ 4,672,441		$ 4,672,441
Amortized cost	[1]	5,723,602		5,722,327
Fair value	[2]	$ 8,901,137		$ 8,334,473
Percentage of net assets		4.50%		5.00%
Investment, Identifier [Axis]: Professional Services Second Lien Senior Secured Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:ProfessionalServicesSecondLienSeniorSecuredLoanMember		star:ProfessionalServicesSecondLienSeniorSecuredLoanMember
Investment, Significant Unobservable Input [true false]				true
Principal, Shares, Units		$ 6,461,338		$ 6,563,134
Amortized cost	[1]	6,442,027		6,522,877
Fair value	[2]	$ 6,201,918		$ 6,250,270
Percentage of net assets		3.20%		3.80%
Investment, Identifier [Axis]: Professional Services Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:ProfessionalServicesWarrantsAndOtherEquitySecuritiesMember		star:ProfessionalServicesWarrantsAndOtherEquitySecuritiesMember
Principal, Shares, Units		$ 756		$ 756
Amortized cost	[1]	271,262		271,262
Fair value	[2]	$ 444,983		$ 99,790
Percentage of net assets		0.20%		0.00%
Investment, Identifier [Axis]: PureCars Technologies Holdings, LLC Preferred Equity Securities Interest Rate 8.00% PIK
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[12]	star:PureCarsTechnologiesHoldingsLLCPreferredEquitySecuritiesInterestRate800PIKMember		star:PureCarsTechnologiesHoldingsLLCPreferredEquitySecuritiesInterestRate800PIKMember
Investment, Significant Unobservable Input [true false]		true		true	[12]
Basis spread on variable rate	[6],[12]			0.00%
Interest Rate	[12]			8.00%
PIK Interest Rate	[12]	8.00%
Acquisition date	[12]	Apr. 17, 2019		Apr. 19, 2019
Principal, Shares, Units	[12]	$ 514		$ 514
Amortized cost	[1],[12]	240,065		240,065
Fair value	[2],[12]	$ 54,944		$ 60,036
Percentage of net assets	[12]	0.00%		0.00%
Investment, Identifier [Axis]: PureCars Technologies, LLC First Lien Senior Secured Term Loan SOFR Spread 6.35% Plus 0.75% PIK Interest Rate 11.62% Plus 0.75% PIK Due 4/18/2024
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[15]	star:PureCarsTechnologiesLLCFirstLienSeniorSecuredTermLoanLIBORSpread625InterestRate1144Due4182024Member	[3]	star:PureCarsTechnologiesLLCFirstLienSeniorSecuredTermLoanLIBORSpread625InterestRate1144Due4182024Member	[9]
Investment, Significant Unobservable Input [true false]		true	[3],[15]	true
Basis spread on variable rate	[15]	6.35%	[3],[5]	6.25%	[6],[9]
Paid in Kind Basis Spread Variable Rate	[3],[5],[15]	0.75%
Interest Rate	[15]	11.62%	[3]	11.02%	[9]
PIK Interest Rate	[3],[15]	0.75%
Acquisition date	[15]	Apr. 17, 2019	[3]	Apr. 18, 2019	[9]
Maturity date	[15]	Apr. 18, 2024	[3]	Apr. 18, 2024	[9]
Principal, Shares, Units	[15]	$ 1,464,229	[3]	$ 1,300,000	[9]
Amortized cost	[1],[15]	1,453,441	[3]	1,300,000	[9]
Fair value	[2],[15]	$ 1,452,515	[3]	$ 1,236,820	[9]
Percentage of net assets	[15]	0.70%	[3]	0.70%	[9]
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]		star:PureCarsTechnologiesLLCPreferredEquitySecuritiesInterestRate800PIKDue7262024Member	[12]	star:PureCarsTechnologiesLLCPreferredEquitySecuritiesInterestRate800PIKDue7262024Member
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate	[6]			0.00%
Interest Rate				0.00%
PIK Interest Rate	[12]	8.00%
Acquisition date		Jul. 25, 2022	[12]	Jul. 25, 2022
Maturity date	[12]	Jul. 26, 2024
Principal, Shares, Units		$ 78	[12]	$ 78
Amortized cost	[1]	26,948	[12]	26,948
Fair value	[2]	$ 27,083	[12]	$ 26,528
Percentage of net assets		0.00%	[12]	0.00%
Investment, Identifier [Axis]: Road & Rail First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]				star:RoadRailFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units				$ 15,000,000
Amortized cost	[1]			14,612,085
Fair value	[2]			$ 14,752,716
Percentage of net assets				8.90%
Investment, Identifier [Axis]: Rock Gate Capital, LLC (dba 160 Driving Academy) First Lien Senior Secured Term Loan LIBOR Spread 7.50% Interest Rate 13.05% Due 10/16/2024
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:RockGateCapitalLLCDba160DrivingAcademyFirstLienSeniorSecuredTermLoanLIBORSpread750InterestRate1269Due10162024Member	[10]	star:RockGateCapitalLLCDba160DrivingAcademyFirstLienSeniorSecuredTermLoanLIBORSpread750InterestRate1269Due10162024Member	[9],[22]
Investment, Significant Unobservable Input [true false]		true	[10]	true
Basis spread on variable rate		7.50%	[5],[10]	7.50%	[6],[9],[22]
Interest Rate		13.05%	[10]	12.27%	[9],[22]
Acquisition date		Oct. 16, 2019	[10]	Oct. 16, 2019	[9],[22]
Maturity date		Oct. 16, 2024	[10]	Oct. 16, 2024	[9],[22]
Principal, Shares, Units		$ 15,410,533	[10]	$ 14,456,337	[9],[22]
Amortized cost	[1]	15,280,461	[10]	14,281,403	[9],[22]
Fair value	[2]	$ 15,410,533	[10]	$ 14,400,081	[9],[22]
Percentage of net assets		7.90%	[10]	8.80%	[9],[22]
Investment, Identifier [Axis]: Rock Gate Capital, LLC (dba 160 Driving Academy) Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:RockGateCapitalLLCDba160DrivingAcademyWarrantsAndOtherEquitySecuritiesMember		star:RockGateCapitalLLCDba160DrivingAcademyWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		0.00%	[5]	0.00%	[6]
Interest Rate				0.00%
Acquisition date		Oct. 16, 2019		Oct. 16, 2019
Principal, Shares, Units		$ 12,693		$ 12,693
Amortized cost	[1]	0		0
Fair value	[2]	$ 133,486		$ 102,210
Percentage of net assets		0.10%		0.10%
Investment, Identifier [Axis]: Senior Unsecured Notes
Investments [Abstract]
Investment, Type [Extensible Enumeration]		Senior Unsecured Notes [Member]
Amortized cost	[1]	$ 1,873,094
Fair value	[2]	$ 1,594,222
Percentage of net assets		0.80%
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]		star:SkyBellTechnologiesIncFirstLienSeniorSecuredTermLoanSOFRSpread000InterestRate000Due12132024Member	[23]	star:SkyBellTechnologiesIncFirstLienSeniorSecuredTermLoanSOFRSpread000InterestRate000Due12132024Member	[24]
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		0.00%	[5],[23]	0.00%	[6],[24]
Interest Rate		0.00%	[23]	0.00%	[24]
Acquisition date		Dec. 13, 2019	[23]	Dec. 13, 2019	[24]
Maturity date		Dec. 13, 2024	[23]	Dec. 13, 2024	[24]
Principal, Shares, Units		$ 4,587,429	[23]	$ 4,839,432	[24]
Amortized cost	[1]	4,523,030	[23]	4,380,844	[24]
Fair value	[2]	$ 2,293,714	[23]	$ 2,586,687	[24]
Percentage of net assets		1.20%	[23]	1.60%	[24]
Investment, Identifier [Axis]: SkyBell Technologies, Inc. Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:SkyBellTechnologiesIncWarrantsAndOtherEquitySecuritiesMember		star:SkyBellTechnologiesIncWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		0.00%	[5]	0.00%	[6]
Interest Rate				0.00%
Acquisition date		Dec. 13, 2019		Dec. 13, 2019
Principal, Shares, Units		$ 1,576,993		$ 1,199,975
Amortized cost	[1]	0		0
Fair value	[2]	$ 0		$ 0
Percentage of net assets		0.00%		0.00%
Investment, Identifier [Axis]: Software First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:SoftwareFirstLienSeniorSecuredTermLoanMember		star:SoftwareFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 4,628,278		$ 4,553,483
Amortized cost	[1]	4,557,601		4,486,456
Fair value	[2]	$ 4,616,564		$ 4,490,303
Percentage of net assets		2.30%		2.70%
Investment, Identifier [Axis]: Software Preferred Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:SoftwarePreferredEquitySecuritiesMember		star:SoftwarePreferredEquitySecuritiesMember
Principal, Shares, Units		$ 1,141,797		$ 1,264,413
Amortized cost	[1]	1,595,175		1,530,834
Fair value	[2]	$ 1,826,154		$ 1,471,165
Percentage of net assets		0.90%		0.80%
Investment, Identifier [Axis]: Specialty Retail First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:SpecialtyRetailFirstLienSeniorSecuredTermLoanMember		star:SpecialtyRetailFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 6,452,101		$ 6,452,101
Amortized cost	[1]	6,327,521		6,314,472
Fair value	[2]	$ 5,968,838		$ 6,318,303
Percentage of net assets		3.10%		3.80%
Investment, Identifier [Axis]: Swyft AcquireCo LLC (dba Swyft Filings) First Lien Senior Secured Term Loan SOFR Spread 2.75% Interest Rate 7.89% Due 12/20/2027
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:SwyftAcquireCoLLCDbaSwyftFilingsFirstLienSeniorSecuredTermLoanSOFRSpread275InterestRate755Due12202027Member	[19],[25]	star:SwyftAcquireCoLLCDbaSwyftFilingsFirstLienSeniorSecuredTermLoanSOFRSpread275InterestRate755Due12202027Member	[20],[26]
Investment, Significant Unobservable Input [true false]		true	[19],[25]	true
Basis spread on variable rate		2.75%	[5],[19],[25]	2.75%	[6],[20],[26]
Interest Rate		7.89%	[19],[25]	7.11%	[20],[26]
Acquisition date		Dec. 20, 2021	[19],[25]	Dec. 20, 2021	[20],[26]
Maturity date		Dec. 20, 2027	[19],[25]	Dec. 20, 2027	[20],[26]
Principal, Shares, Units		$ 302,633	[19],[25]	$ 306,030	[20],[26]
Amortized cost	[1]	298,573	[19],[25]	301,457	[20],[26]
Fair value	[2]	$ 300,000	[19],[25]	$ 304,224	[20],[26]
Percentage of net assets		0.20%	[19],[25]	0.10%	[20],[26]
Investment, Identifier [Axis]: Swyft AcquireCo LLC (dba Swyft Filings) First Lien Senior Secured Term Loan SOFR Spread 5.50% Interest Rate 10.64% Due 12/20/2027
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[15]	star:SwyftAcquireCoLLCDbaSwyftFilingsFirstLienSeniorSecuredTermLoanSOFRSpread550InterestRate1030Due12202027Member	[19]	star:SwyftAcquireCoLLCDbaSwyftFilingsFirstLienSeniorSecuredTermLoanSOFRSpread550InterestRate1030Due12202027Member	[20]
Investment, Significant Unobservable Input [true false]		true	[15],[19]	true
Basis spread on variable rate	[15]	5.50%	[5],[19]	5.50%	[6],[20]
Interest Rate	[15]	10.64%	[19]	9.86%	[20]
Acquisition date	[15]	Dec. 20, 2021	[19]	Dec. 20, 2021	[20]
Maturity date	[15]	Dec. 20, 2027	[19]	Dec. 20, 2027	[20]
Principal, Shares, Units	[15]	$ 3,682,383	[19]	$ 3,682,383	[20]
Amortized cost	[1],[15]	3,631,273	[19]	3,625,692	[20]
Fair value	[2],[15]	$ 3,505,629	[19]	$ 3,609,840	[20]
Percentage of net assets	[15]	1.80%	[19]	2.10%	[20]
Investment, Identifier [Axis]: Swyft Filings Holdings, LLC Preferred Equity Securities Interest Rate 8.00% PIK
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:SwyftFilingsHoldingsLLCPreferredEquitySecuritiesInterestRate800PIKMember	[12],[24]	star:SwyftFilingsHoldingsLLCPreferredEquitySecuritiesInterestRate800PIKMember	[17],[27]
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate	[6],[17],[27]			0.00%
Interest Rate	[17],[27]			0.00%
PIK Interest Rate	[12],[24]	8.00%
Acquisition date		Dec. 20, 2021	[12],[24]	Dec. 20, 2021	[17],[27]
Principal, Shares, Units		$ 192,444	[12],[24]	$ 192,444	[17],[27]
Amortized cost	[1]	183,612	[12],[24]	183,612	[17],[27]
Fair value	[2]	$ 230,249	[12],[24]	$ 285,516	[17],[27]
Percentage of net assets		0.10%	[12],[24]	0.20%	[17],[27]
Investment, Identifier [Axis]: TCP Acquisition, LLC First Lien Senior Secured Term Loan SOFR Spread 7.50% Interest Rate 12.77% Due 7/26/2027
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:TCPAcquisitionLLCFirstLienSeniorSecuredTermLoanSOFRSpread750InterestRate1241Due7262027Member	[3],[21]	star:TCPAcquisitionLLCFirstLienSeniorSecuredTermLoanSOFRSpread750InterestRate1241Due7262027Member	[4],[22]
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		7.50%	[3],[5],[21]	7.61%	[4],[6],[22]
Interest Rate		12.77%	[3],[21]	12.20%	[4],[22]
Acquisition date		Jul. 26, 2022	[3],[21]	Jul. 26, 2022	[4],[22]
Maturity date		Jul. 26, 2027	[3],[21]	Jul. 26, 2027	[4],[22]
Principal, Shares, Units		$ 14,812,500	[3],[21]	$ 15,000,000	[4],[22]
Amortized cost	[1]	14,469,959	[3],[21]	14,612,085	[4],[22]
Fair value	[2]	$ 14,571,412	[3],[21]	$ 14,752,716	[4],[22]
Percentage of net assets		7.50%	[3],[21]	8.90%	[4],[22]
Investment, Identifier [Axis]: Texas Contract Manufacturing Group, Inc. First Lien Senior Secured Term Loan SOFR Spread 12.11% Interest Rate 17.38% Due 4/27/2027
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:TexasContractManufacturingGroupIncFirstLienSeniorSecuredTermLoanSOFRSpread1211InterestRate1702Due4272027Member	[3]	star:TexasContractManufacturingGroupIncFirstLienSeniorSecuredTermLoanSOFRSpread1211InterestRate1702Due4272027Member	[4]
Investment, Significant Unobservable Input [true false]		true	[3]	true
Basis spread on variable rate		12.11%	[3],[5]	12.11%	[4],[6]
Interest Rate		17.38%	[3]	16.70%	[4]
Acquisition date		Apr. 27, 2022	[3]	Apr. 27, 2022	[4]
Maturity date		Apr. 27, 2027	[3]	Apr. 27, 2027	[4]
Principal, Shares, Units		$ 5,867,944	[3]	$ 6,096,210	[4]
Amortized cost	[1]	5,774,114	[3]	5,983,378	[4]
Fair value	[2]	$ 5,400,855	[3]	$ 5,384,172	[4]
Percentage of net assets		2.80%	[3]	3.20%	[4]
Investment, Identifier [Axis]: Texas Contract Manufacturing Group, Inc. Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:TexasContractManufacturingGroupIncWarrantsAndOtherEquitySecuritiesMember		star:TexasContractManufacturingGroupIncWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		0.00%	[5]	0.00%	[6]
Interest Rate				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]	$ 1,373,871		$ 1,251,613
Percentage of net assets		0.70%		0.80%
Investment, Identifier [Axis]: The Range NYC, LLC (dba Five Iron Golf) First Lien Senior Secured Term Loan SOFR Spread 7.61% Interest Rate 12.88% Due 9/15/2027
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:TheRangeNYCLLCDbaFiveIronGolfFirstLienSeniorSecuredTermLoanSOFRSpread761InterestRate1252Due9152027Member	[3],[21]	star:TheRangeNYCLLCDbaFiveIronGolfFirstLienSeniorSecuredTermLoanSOFRSpread761InterestRate1252Due9152027Member	[4],[22]
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		7.61%	[3],[5],[21]	7.61%	[4],[6],[22]
Interest Rate		12.88%	[3],[21]	12.20%	[4],[22]
Acquisition date		Sep. 15, 2022	[3],[21]	Sep. 15, 2022	[4],[22]
Maturity date		Sep. 15, 2027	[3],[21]	Sep. 15, 2027	[4],[22]
Principal, Shares, Units		$ 5,016,807	[3],[21]	$ 5,042,017	[4],[22]
Amortized cost	[1]	4,868,125	[3],[21]	4,876,933	[4],[22]
Fair value	[2]	$ 4,899,915	[3],[21]	$ 4,848,856	[4],[22]
Percentage of net assets		2.50%	[3],[21]	2.90%	[4],[22]
Investment, Identifier [Axis]: The Range NYC, LLC (dba Five Iron Golf) Warrants and Other Equity Securities Due 9/15/2027
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:TheRangeNYCLLCDbaFiveIronGolfWarrantsAndOtherEquitySecuritiesDue9152027Member		star:TheRangeNYCLLCDbaFiveIronGolfWarrantsAndOtherEquitySecuritiesDue9152027Member
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		0.00%	[5]	0.00%	[6]
Interest Rate				0.00%
Acquisition date		Sep. 15, 2022		Sep. 15, 2022
Maturity date		Sep. 15, 2027		Sep. 15, 2027
Principal, Shares, Units		$ 21,210		$ 21,210
Amortized cost	[1]	71,599		71,599
Fair value	[2]	$ 46,052		$ 70,590
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]		star:TradingCompaniesDistributorsFirstLienSeniorSecuredTermLoanMember		star:TradingCompaniesDistributorsFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 15,792,613		$ 16,862,750
Amortized cost	[1]	15,534,956		16,574,233
Fair value	[2]	$ 14,740,035		$ 16,709,123
Percentage of net assets		7.70%		10.20%
Investment, Identifier [Axis]: Trading Companies & Distributors Preferred Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:TradingCompaniesDistributorsPreferredEquitySecuritiesMember		star:TradingCompaniesDistributorsPreferredEquitySecuritiesMember
Principal, Shares, Units		$ 469		$ 469
Amortized cost	[1]	468,750		468,750
Fair value	[2]	$ 107,109		$ 468,750
Percentage of net assets		0.10%		0.30%
Investment, Identifier [Axis]: Trading Companies & Distributors Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:TradingCompaniesDistributorsWarrantsAndOtherEquitySecuritiesMember
Principal, Shares, Units		$ 204
Amortized cost	[1]	0
Fair value	[2]	$ 75,469
Percentage of net assets		0.00%
Investment, Identifier [Axis]: Trailer Park Group Holdings LLC First Lien Senior Secured Term Loan SOFR Spread 7.76% Interest Rate 13.03% Due 8/2/2026
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[15]	star:TrailerParkGroupHoldingsLLCFirstLienSeniorSecuredTermLoanSOFRSpread776InterestRate1267Due822026Member	[3]	star:TrailerParkGroupHoldingsLLCFirstLienSeniorSecuredTermLoanSOFRSpread776InterestRate1267Due822026Member	[4]
Investment, Significant Unobservable Input [true false]		true	[3],[15]	true
Basis spread on variable rate	[15]	7.76%	[3],[5]	7.76%	[4],[6]
Interest Rate	[15]	13.03%	[3]	12.35%	[4]
Acquisition date	[15]	Aug. 02, 2021	[3]	Aug. 02, 2021	[4]
Maturity date	[15]	Aug. 02, 2026	[3]	Aug. 02, 2026	[4]
Principal, Shares, Units	[15]	$ 14,416,682	[3]	$ 14,416,682	[4]
Amortized cost	[1],[15]	14,163,057	[3]	14,135,147	[4]
Fair value	[2],[15]	$ 13,809,740	[3]	$ 14,389,290	[4]
Percentage of net assets	[15]	7.10%	[3]	8.70%	[4]
Investment, Identifier [Axis]: Trailer Park Group Holdings LLC Preferred Equity Securities Interest Rate 8.00% PIK
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[12]	star:TrailerParkGroupHoldingsLLCPreferredEquitySecuritiesInterestRate800PIKMember		star:TrailerParkGroupHoldingsLLCPreferredEquitySecuritiesInterestRate800PIKMember
Investment, Significant Unobservable Input [true false]		true		true	[12]
Basis spread on variable rate	[6],[12]			0.00%
Interest Rate	[12]			8.00%
PIK Interest Rate	[12]	8.00%
Acquisition date	[12]	Aug. 02, 2021		Aug. 02, 2021
Principal, Shares, Units	[12]	$ 371,822		$ 371,822
Amortized cost	[1],[12]	366,759		366,100
Fair value	[2],[12]	$ 643,810		$ 907,432
Percentage of net assets	[12]	0.30%		0.50%
Investment, Identifier [Axis]: Transportation Infrastructure First Lien Senior Secured Term Loan
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:TransportationInfrastructureFirstLienSeniorSecuredTermLoanMember
Principal, Shares, Units		$ 14,812,500
Amortized cost	[1]	14,469,959
Fair value	[2]	$ 14,571,412
Percentage of net assets		7.50%
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]	[12]	star:UJPAcquisitionLLCDbaUncleJohnSPridePreferredEquitySecuritiesInterestRate800PIKMember		star:UJPAcquisitionLLCDbaUncleJohnSPridePreferredEquitySecuritiesInterestRate800PIKMember
Investment, Significant Unobservable Input [true false]		true		true	[12]
Basis spread on variable rate	[6],[12]			0.00%
Interest Rate	[12]			8.00%
PIK Interest Rate	[12]	8.00%
Acquisition date	[12]	Mar. 31, 2022		Mar. 31, 2022
Principal, Shares, Units	[12]	$ 1,489,362		$ 1,489,362
Amortized cost	[1],[12]	1,489,362		1,489,362
Fair value	[2],[12]	$ 1,844,723		$ 1,572,766
Percentage of net assets	[12]	0.90%		0.90%
Investment, Identifier [Axis]: UJP Acquisition, LLC (dba Uncle John's Pride) Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:UJPAcquisitionLLCDbaUncleJohnSPrideWarrantsAndOtherEquitySecuritiesMember		star:UJPAcquisitionLLCDbaUncleJohnSPrideWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		0.00%	[5]	0.00%	[6]
Interest Rate				0.00%
Acquisition date		Mar. 31, 2022		Mar. 31, 2022
Principal, Shares, Units		$ 127,215		$ 127,215
Amortized cost	[1]	0		0
Fair value	[2]	$ 16,979		$ 9,830
Percentage of net assets		0.00%		0.00%
Investment, Identifier [Axis]: USBid Inc. First Lien Senior Secured Term Loan SOFR Spread 7.26% Interest Rate 12.53% Due 11/3/2027
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[15]	star:USBidIncFirstLienSeniorSecuredTermLoanSpread726InterestRate1217Due1132027Member	[3]	star:USBidIncFirstLienSeniorSecuredTermLoanSpread726InterestRate1217Due1132027Member	[20]
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate	[15]	7.26%	[3],[5]	7.26%	[6],[20]
Interest Rate	[15]	12.53%	[3]	11.62%	[20]
Acquisition date	[15]	Nov. 03, 2022	[3]	Nov. 03, 2022	[20]
Maturity date	[15]	Nov. 03, 2027	[3]	Nov. 03, 2027	[20]
Principal, Shares, Units	[15]	$ 7,031,250	[3]	$ 7,031,250	[20]
Amortized cost	[1],[15]	6,886,999	[3]	6,877,623	[20]
Fair value	[2],[15]	$ 5,978,672	[3]	$ 6,877,623	[20]
Percentage of net assets	[15]	3.20%	[3]	4.20%	[20]
Investment, Identifier [Axis]: USBid Inc. Preferred Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:USBidIncPreferredEquitySecuritiesMember		star:USBidIncPreferredEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate	[6]			0.00%
Interest Rate		0.00%		0.00%
Acquisition date		Nov. 03, 2022		Nov. 03, 2022
Maturity date				Nov. 03, 2027
Principal, Shares, Units		$ 469		$ 469
Amortized cost	[1]	468,750		468,750
Fair value	[2]	$ 107,109		$ 468,750
Percentage of net assets		0.10%		0.30%
Investment, Identifier [Axis]: USBid Inc. Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:USBidIncWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]		true
Basis spread on variable rate	[5]	0.00%
Acquisition date		Nov. 03, 2022
Principal, Shares, Units		$ 204
Amortized cost	[1]	0
Fair value	[2]	$ 75,469
Percentage of net assets		0.00%
Investment, Identifier [Axis]: Uncle John's Pride, LLC First Lien Senior Secured Term Loan SOFR Spread 10.11% Interest Rate 15.25% Due 3/31/2027
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:UncleJohnSPrideLLCFirstLienSeniorSecuredTermLoanSOFRSpread1011InterestRate1491Due3312027Member	[19]	star:UncleJohnSPrideLLCFirstLienSeniorSecuredTermLoanSOFRSpread1011InterestRate1491Due3312027Member	[4]
Investment, Significant Unobservable Input [true false]		true	[19]	true
Basis spread on variable rate		10.11%	[5],[19]	9.11%	[4],[6]
Paid in Kind Basis Spread Variable Rate	[4],[6]			1.00%
Interest Rate		15.25%	[19]	13.47%	[4]
PIK Interest Rate	[4]			1.00%
Acquisition date		Mar. 31, 2022	[19]	Mar. 31, 2022	[4]
Maturity date		Mar. 31, 2027	[19]	Mar. 31, 2027	[4]
Principal, Shares, Units		$ 5,423,341	[19]	$ 5,469,309	[4]
Amortized cost	[1]	5,323,724	[19]	5,368,762	[4]
Fair value	[2]	$ 5,390,801	[19]	$ 5,370,764	[4]
Percentage of net assets		2.80%	[19]	3.20%	[4]
Investment, Identifier [Axis]: Vertical Mechanical Group Holdings, LLC Preferred Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:VerticalMechanicalGroupHoldingsLLCPreferredEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]		true
Acquisition date		May 12, 2023
Principal, Shares, Units		$ 1,857,143
Amortized cost	[1]	1,857,143
Fair value	[2]	$ 1,857,143
Percentage of net assets		1.00%
Investment, Identifier [Axis]: Vertical Mechanical Group, LLC First Lien Senior Secured Term Loan SOFR Spread 7.76% Interest Rate 13.03% Due 5/12/2028
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[3],[15]	star:VerticalMechanicalGroupLLCFirstLienSeniorSecuredTermLoanSOFRSpread776InterestRate1303Due5122028Member
Investment, Significant Unobservable Input [true false]	[3],[15]	true
Basis spread on variable rate	[3],[5],[15]	7.76%
Interest Rate	[3],[15]	13.03%
Acquisition date	[3],[15]	May 12, 2023
Maturity date	[3],[15]	May 12, 2028
Principal, Shares, Units	[3],[15]	$ 4,571,429
Amortized cost	[1],[3],[15]	4,420,986
Fair value	[2],[3],[15]	$ 4,420,986
Percentage of net assets	[3],[15]	2.30%
Investment, Identifier [Axis]: Warrants and Other Equity Securities
Investments [Abstract]
Investment, Type [Extensible Enumeration]		Warrants and Other Equity Securities [Member]		Warrants and Other Equity Securities [Member]
Amortized cost	[1]	$ 2,867,756		$ 2,447,879
Fair value	[2]	$ 7,584,040		$ 5,829,429
Percentage of net assets		3.90%		3.40%
Investment, Identifier [Axis]: Watt Acquisition, LLC First Lien Senior Secured Term Loan SOFR Spread 11.25% Interest Rate 16.52% Due 4/15/2027
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[15]	star:WattAcquisitionLLCFirstLienSeniorSecuredTermLoanSOFRSpread1125InterestRate1616Due4152027Member	[3]	star:WattAcquisitionLLCFirstLienSeniorSecuredTermLoanSOFRSpread1125InterestRate1616Due4152027Member	[4]
Investment, Significant Unobservable Input [true false]		true	[3],[15]	true
Basis spread on variable rate	[15]	11.25%	[3],[5]	11.25%	[4],[6]
Interest Rate	[15]	16.52%	[3]	15.84%	[4]
Acquisition date	[15]	Apr. 15, 2022	[3]	Apr. 15, 2022	[4]
Maturity date	[15]	Apr. 15, 2027	[3]	Apr. 15, 2027	[4]
Principal, Shares, Units	[15]	$ 3,653,125	[3]	$ 3,601,334	[4]
Amortized cost	[1],[15]	3,593,590	[3]	3,534,629	[4]
Fair value	[2],[15]	$ 3,528,553	[3]	$ 3,588,009	[4]
Percentage of net assets	[15]	1.80%	[3]	2.20%	[4]
Investment, Identifier [Axis]: Watt Contracting Holdings, LLC Preferred Equity Securities Interest Rate 15.00% PIK
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:WattContractingHoldingsLLCPreferredEquitySecuritiesInterestRate1500PIKMember		star:WattContractingHoldingsLLCPreferredEquitySecuritiesInterestRate1500PIKMember
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate	[6]			0.00%
Interest Rate				15.00%
PIK Interest Rate		15.00%
Acquisition date		Apr. 15, 2022		Apr. 15, 2022
Principal, Shares, Units		$ 2,110,487		$ 2,110,487
Amortized cost	[1]	2,075,652		2,072,468
Fair value	[2]	$ 1,837,234		$ 2,165,391
Percentage of net assets		0.90%		1.30%
Investment, Identifier [Axis]: Watt Contracting Holdings, LLC Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:WattContractingHoldingsLLCWarrantsAndOtherEquitySecuritiesMember		star:WattContractingHoldingsLLCWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		0.00%	[5]	0.00%	[6]
Interest Rate				0.00%
Acquisition date		Apr. 15, 2022		Apr. 15, 2022
Principal, Shares, Units		$ 218		$ 226
Amortized cost	[1]	0		0
Fair value	[2]	$ 0		$ 11,743
Percentage of net assets		0.00%		0.00%
Investment, Identifier [Axis]: YTC Holdings, Inc. (dba Yorktel) First Lien Senior Secured Term Loan SOFR Spread 10.71% Interest Rate 15.28% Due 9/23/2024
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:YTCHoldingsIncDbaYorktelFirstLienSeniorSecuredTermLoanLIBORSpread975InterestRate1494Due9232024Member	[3]	star:YTCHoldingsIncDbaYorktelFirstLienSeniorSecuredTermLoanLIBORSpread975InterestRate1494Due9232024Member	[9]
Investment, Significant Unobservable Input [true false]		true	[3]	true
Basis spread on variable rate		10.71%	[3],[5]	9.75%	[6],[9]
Interest Rate		15.28%	[3]	14.52%	[9]
Acquisition date		Sep. 23, 2019	[3]	Sep. 23, 2019	[9]
Maturity date		Sep. 23, 2024	[3]	Sep. 23, 2024	[9]
Principal, Shares, Units		$ 4,157,756	[3]	$ 3,753,200	[9]
Amortized cost	[1]	4,130,681	[3]	3,725,056	[9]
Fair value	[2]	$ 4,157,756	[3]	$ 3,753,200	[9]
Percentage of net assets		2.10%	[3]	2.30%	[9]
Investment, Identifier [Axis]: YTC Holdings, Inc. (dba Yorktel) Preferred Equity Securities Interest Rate 8.00% PIK
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]	[12]	star:YTCHoldingsIncDbaYorktelPreferredEquitySecuritiesInterestRate800PIKMember		star:YTCHoldingsIncDbaYorktelPreferredEquitySecuritiesInterestRate800PIKMember
Investment, Significant Unobservable Input [true false]		true		true	[12]
Basis spread on variable rate	[6],[12]			0.00%
Interest Rate	[12]			8.00%
PIK Interest Rate	[12]	8.00%
Acquisition date	[12]	Sep. 23, 2019		Sep. 23, 2019
Principal, Shares, Units	[12]	$ 151,018		$ 151,018
Amortized cost	[1],[12]	2,280,666		2,191,398
Fair value	[2],[12]	$ 2,436,458		$ 1,152,729
Percentage of net assets	[12]	1.30%		0.70%
Investment, Identifier [Axis]: York Telecom Corporation (dba Yorktel) Warrants and Other Equity Securities
Investments [Abstract]
Investment, Issuer Name [Extensible Enumeration]		star:YorkTelecomCorporationDbaYorktelWarrantsAndOtherEquitySecuritiesMember		star:YorkTelecomCorporationDbaYorktelWarrantsAndOtherEquitySecuritiesMember
Investment, Significant Unobservable Input [true false]		true		true
Basis spread on variable rate		0.00%	[5]	0.00%	[6]
Interest Rate				0.00%
Acquisition date		Sep. 23, 2019		Sep. 23, 2019
Principal, Shares, Units		$ 77,195		$ 77,195
Amortized cost	[1]	0		0
Fair value	[2]	$ 776,793		$ 252,059
Percentage of net assets		0.40%		0.20%

[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 financial statements.

[3] The interest rate on these loans is subject to 3 month SOFR, which was 5.27% as of June 30, 2023.

[4] The interest rate on these loans is subject to 3 month SOFR, which was 4.59% as of December 31, 2022.

[5] 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 London Interbank Offered Rate (“LIBOR” or “L”, which can include one or three- month LIBOR), the Secured Overnight Financing Rate (“SOFR” or “S”, which can include one or three- month SOFR), 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”).

[6] 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 London Interbank Offered Rate (“LIBOR” or “L”, which can include one or three- month LIBOR), 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”).

[7] 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 six months ended June 30, 2023 were Arrow Home Health, LLC which represented $1,198,115 of Fair Value and 0.6% of Net Assets of the Company. Transactions related to investments in “Controlled/Affiliate Investments” for the six months ended June 30, 2023 were as follows:

[8] 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, 2022 were Arrow Home Health, LLC which represented $1,429,530 of Fair Value and 0.9% of Net Assets of the Company. Transactions related to investments in “Controlled/Affiliate Investments” for the year ended December 31, 2022 were as follows:

[9] The interest rate on these loans is subject to 3 month LIBOR, which was 4.77% as of December 31, 2022.

[10] The interest rate on these loans is subject to 3 month LIBOR, which was 5.55% as of June 30, 2023.

[11] Caregility Corporation is a wholly owned subsidiary of YTC Holdings, Inc.

[12] Investment contains a fixed rate structure.

[13] The interest rate on these loans is subject to 1 month LIBOR, which was 5.22% as of June 30, 2023.

[14] The interest rate on these loans is subject to 1 month LIBOR, which was 4.39% as of December 31, 2022.

[15] 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.

[16] The Company has received 46 units of incentive shares which have no Cost or Fair Value as of June 30, 2023.

[17] Ownership of certain equity investments may occur through a holding company or partnership. In no instances are the holding companies or partnerships wholly owned by the Company.

[18] The Company has received 46 units of incentive shares, which have no Cost or Fair Value as of December 31, 2022.

[19] The interest rate on these loans is subject to 1 month SOFR, which was 5.14% as of June 30, 2023.

[20] The interest rate on these loans is subject to 1 month SOFR, which was 4.36% as of December 31, 2022.

[21] Positions have an aggregate unfunded commitment of $20,580,930 in addition to the amounts shown in the Schedule of Investments. See Note 11 “Commitments, Contingencies and Risks” in the accompanying notes to the financial statements.

[22] Positions have an aggregate unfunded commitment of $26,450,607 in addition to the amounts shown in the Schedule of Investments. See Note 11 “Commitments, Contingencies, and Risks” in the accompanying notes to the financial statements. The liquidity of the Company’s investment in the above portfolio funds is based solely on the liquidation events, distributions and dissolution of the underlying assets of each portfolio funds and the subsequent distributions or dissolution of each portfolio fund as and when such events occur.

[23] The investment is on non-accrual status. See Note 2 “Significant Accounting Policies”.

[24] The investment includes the fair value and amortized cost of 1,015 shares of common equity issued in conjunction with the preferred equity.

[25] Interest disclosed reflects the contractual rate of the First Out tranche under the AAL.

[26] Interest disclosed reflects the contractual rate of the First Out tranche under the Agreement Among Lenders (“AAL”).

[27] Shares of common equity issued in conjunction with the preferred equity.