Consolidated Schedule of Investments (Parenthetical) - USD ($) $ in Thousands		3 Months Ended					6 Months Ended			12 Months Ended
		Mar. 31, 2025		Dec. 31, 2024		Mar. 31, 2024	Mar. 31, 2025		Mar. 31, 2024	Sep. 30, 2024
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1]			$ 8,235,411			$ 8,235,411
Net realized gain (loss)							(42,220)		$ (17,368)
Investments, at fair value, ending balance		$ 8,621,220	[2]				8,621,220	[2]		$ 8,235,411	[1]
Non-controlled affiliate company investments
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance				211,382	[1],[3]		211,382	[1],[3]	87,084	87,084
Gross additions							61,613			177,905
Gross reductions							(10,000)			(37,747)
Net change in unrealized appreciation (depreciation)							689			4,600
Net realized gain (loss)		0				$ (18,517)	0		(18,517)	(20,460)
Investments, at fair value, ending balance		263,684	[2]				263,684	[2]		211,382	[1],[3]
Interest, dividend and fee income							5,279			9,448
Controlled affiliate company investments
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance				12,205	[1]		12,205	[1]	12,790	12,790
Gross additions							238			11,979
Gross reductions							0			(11,344)
Net change in unrealized appreciation (depreciation)							(527)			10,406
Net realized gain (loss)							0			(11,626)
Investments, at fair value, ending balance		11,916	[2],[4]				11,916	[2],[4]		12,205	[1]
Interest, dividend and fee income							249			439
Investment, Identifier [Axis]: 3ES Innovation, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[7],[8]			25,451			25,451
Investments, at fair value, ending balance	[1],[5],[6],[7],[8]									25,451
Investment, Identifier [Axis]: 3ES Innovation, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8]			0			0
Investments, at fair value, ending balance	[1],[5],[7],[8]									0
Investment, Identifier [Axis]: AAH TOPCO, LLC , One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			8,672			8,672
Investments, at fair value, ending balance	[1],[5],[9]									8,672
Investment, Identifier [Axis]: AAH TOPCO, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	8,627					8,627
Investment, Identifier [Axis]: AAH TOPCO, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			8,152			8,152
Investments, at fair value, ending balance		8,111	[2],[10]				8,111	[2],[10]		8,152	[1],[5]
Investment, Identifier [Axis]: AAH TOPCO, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,483			1,483
Investments, at fair value, ending balance		3,135	[2],[10]				3,135	[2],[10]		1,483	[1],[5]
Investment, Identifier [Axis]: AAH TOPCO, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: AAH TOPCO, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(44)					(44)
Investment, Identifier [Axis]: AAH TOPCO, LLC, Subordinated debt
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			2,566			2,566
Investments, at fair value, ending balance		2,804	[2],[10],[14]				2,804	[2],[10],[14]		2,566	[1],[5],[13]
Investment, Identifier [Axis]: ACP Ulysses Buyer, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[6],[15],[16],[17]			30,144			30,144
Investments, at fair value, ending balance		30,144	[2],[10],[18]				30,144	[2],[10],[18]		30,144	[1],[6],[15],[16],[17]
Investment, Identifier [Axis]: ACP Ulysses Buyer, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[6],[9]			1,303			1,303
Investments, at fair value, ending balance		1,303	[2],[10],[18]				1,303	[2],[10],[18]		1,303	[1],[6],[9]
Investment, Identifier [Axis]: ADCS Clinics Intermediate Holdings, LLC, Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: ADCS Clinics Intermediate Holdings, LLC, Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,300			1,300
Investments, at fair value, ending balance		1,230	[2],[10]				1,230	[2],[10]		1,300	[1],[5]
Investment, Identifier [Axis]: AI Titan Parent, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			10,403			10,403
Investments, at fair value, ending balance		10,508	[2],[10]				10,508	[2],[10]		10,403	[1],[5]
Investment, Identifier [Axis]: AI Titan Parent, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(11)			(11)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(11)	[1],[5],[11]
Investment, Identifier [Axis]: AI Titan Parent, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(13)			(13)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(13)	[1],[5],[11]
Investment, Identifier [Axis]: ALKU Intermediate Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			6,882			6,882
Investments, at fair value, ending balance		6,813	[2],[10]				6,813	[2],[10]		6,882	[1],[5],[9]
Investment, Identifier [Axis]: ALKU Intermediate Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			751			751
Investments, at fair value, ending balance		748	[2],[10]				748	[2],[10]		751	[1],[5],[9]
Investment, Identifier [Axis]: AMBA Buyer, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			4,468			4,468
Investments, at fair value, ending balance		4,445	[2],[10]				4,445	[2],[10]		4,468	[1],[5],[16]
Investment, Identifier [Axis]: AMBA Buyer, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,330			1,330
Investments, at fair value, ending balance		1,324	[2],[10]				1,324	[2],[10]		1,330	[1],[5]
Investment, Identifier [Axis]: AMBA Buyer, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,122			1,122
Investments, at fair value, ending balance		1,117	[2],[10]				1,117	[2],[10]		1,122	[1],[5],[9]
Investment, Identifier [Axis]: AMBA Buyer, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		161	[2],[10]				161	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: AMBA Buyer, Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			162			162
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		162	[1],[5]
Investment, Identifier [Axis]: AVG Intermediate Holdings & AVG Subsidiary Holdings LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			184			184
Investments, at fair value, ending balance		134	[2],[10]				134	[2],[10]		184	[1],[5]
Investment, Identifier [Axis]: AVG Intermediate Holdings & AVG Subsidiary Holdings LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			6,419			6,419
Investments, at fair value, ending balance		6,385	[2],[10],[18]				6,385	[2],[10],[18]		6,419	[1],[5],[15]
Investment, Identifier [Axis]: AVG Intermediate Holdings & AVG Subsidiary Holdings LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[19]			5,365			5,365
Investments, at fair value, ending balance		5,338	[2],[10],[20]				5,338	[2],[10],[20]		5,365	[1],[5],[19]
Investment, Identifier [Axis]: AVG Intermediate Holdings & AVG Subsidiary Holdings LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			837			837
Investments, at fair value, ending balance		833	[2],[10]				833	[2],[10]		837	[1],[5]
Investment, Identifier [Axis]: AVG Intermediate Holdings & AVG Subsidiary Holdings LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			397			397
Investments, at fair value, ending balance		394	[2],[10]				394	[2],[10]		397	[1],[5]
Investment, Identifier [Axis]: AVG Intermediate Holdings & AVG Subsidiary Holdings LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: AVG Intermediate Holdings & AVG Subsidiary Holdings LLC, Subordinated debt 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			15,672			15,672
Investments, at fair value, ending balance		16,803	[2],[10],[14]				16,803	[2],[10],[14]		15,672	[1],[5],[13]
Investment, Identifier [Axis]: AVG Intermediate Holdings & AVG Subsidiary Holdings LLC, Subordinated debt 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			3,400			3,400
Investments, at fair value, ending balance		3,646	[2],[10],[14]				3,646	[2],[10],[14]		3,400	[1],[5],[13]
Investment, Identifier [Axis]: AVG Intermediate Holdings & AVG Subsidiary Holdings LLC, Subordinated debt 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			1,300			1,300
Investments, at fair value, ending balance		1,394	[2],[10],[14]				1,394	[2],[10],[14]		1,300	[1],[5],[13]
Investment, Identifier [Axis]: Abita Brewing Co. LLC
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance				6,000			6,000		6,536	6,536
Gross additions							4,525			2,166
Gross reductions							(3,252)			(709)
Net change in unrealized appreciation (depreciation)							(719)			(1,993)
Net realized gain (loss)							0			0
Investments, at fair value, ending balance		6,554					6,554			6,000
Interest, dividend and fee income							46			575
Investment, Identifier [Axis]: Abita Brewing Co., L.L.C., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[21]			4,888			4,888
Investments, at fair value, ending balance		4,359	[2],[10],[14],[22]				4,359	[2],[10],[14],[22]		4,888	[1],[5],[13],[21]
Investment, Identifier [Axis]: Abita Brewing Co., L.L.C., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			677			677
Investments, at fair value, ending balance		1,788	[2],[10],[14]				1,788	[2],[10],[14]		677	[1],[5],[13]
Investment, Identifier [Axis]: Abita Brewing Co., L.L.C., Second lien
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[21]			435			435
Investments, at fair value, ending balance		407	[2],[10],[14],[22]				407	[2],[10],[14],[22]		435	[1],[5],[13],[21]
Investment, Identifier [Axis]: Abita Brewing Co., L.L.C., Warrant
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Accelya Lux Finco S.A.R.L., One stop
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[13],[23]			8,547			8,547
Investments, at fair value, ending balance		8,903	[2],[10],[14],[24],[25]				8,903	[2],[10],[14],[24],[25]		8,547	[1],[5],[8],[9],[13],[23]
Investment, Identifier [Axis]: Accession Risk Management Group, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[15],[17],[19]			36,885			36,885
Investments, at fair value, ending balance		36,876	[2],[10],[18],[20]				36,876	[2],[10],[18],[20]		36,885	[1],[5],[6],[15],[17],[19]
Investment, Identifier [Axis]: Accession Risk Management Group, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15],[19]			9,453			9,453
Investments, at fair value, ending balance		9,450	[2],[10],[18],[20]				9,450	[2],[10],[18],[20]		9,453	[1],[5],[15],[19]
Investment, Identifier [Axis]: Accession Risk Management Group, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			8,319			8,319
Investments, at fair value, ending balance		8,319	[2],[10],[18]				8,319	[2],[10],[18]		8,319	[1],[5],[16]
Investment, Identifier [Axis]: Accession Risk Management Group, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[16]			5,223			5,223
Investments, at fair value, ending balance		8,032	[2],[10]				8,032	[2],[10]		5,223	[1],[5],[9],[16]
Investment, Identifier [Axis]: Accession Risk Management Group, Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(13)			(13)
Investments, at fair value, ending balance		7,813	[2],[10],[18]				7,813	[2],[10],[18]		(13)	[1],[5],[11]
Investment, Identifier [Axis]: Accession Risk Management Group, Inc., One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(3)			(3)
Investments, at fair value, ending balance		5,222	[2],[10],[18]				5,222	[2],[10],[18]		(3)	[1],[5],[11]
Investment, Identifier [Axis]: Accession Risk Management Group, Inc., One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			7,207			7,207
Investments, at fair value, ending balance		618	[2],[10]				618	[2],[10]		7,207	[1],[5]
Investment, Identifier [Axis]: Accession Risk Management Group, Inc., One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(111)			(111)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(111)	[1],[5],[11]
Investment, Identifier [Axis]: Accession Risk Management Group, Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			9,988			9,988
Investments, at fair value, ending balance		10,668	[2],[10],[27]				10,668	[2],[10],[27]		9,988	[1],[5],[26]
Investment, Identifier [Axis]: Acquia, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[19]			12,020			12,020
Investments, at fair value, ending balance		12,020	[2],[10],[18],[20]				12,020	[2],[10],[18],[20]		12,020	[1],[5],[19]
Investment, Identifier [Axis]: Acquia, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			44			44
Investments, at fair value, ending balance		1,083	[2],[10]				1,083	[2],[10]		44	[1],[5]
Investment, Identifier [Axis]: Acquia, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,083			1,083
Investments, at fair value, ending balance		112	[2],[10]				112	[2],[10]		1,083	[1],[5]
Investment, Identifier [Axis]: Active Day, Inc., LLC interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,217			1,217
Investments, at fair value, ending balance		1,740	[2],[10]				1,740	[2],[10]		1,217	[1],[5]
Investment, Identifier [Axis]: Active Day, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[17]			17,388			17,388
Investments, at fair value, ending balance		17,298	[2],[10],[18]				17,298	[2],[10],[18]		17,388	[1],[5],[17]
Investment, Identifier [Axis]: Active Day, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[17]			1,343			1,343
Investments, at fair value, ending balance		6,627	[2],[10]				6,627	[2],[10]		1,343	[1],[5],[17]
Investment, Identifier [Axis]: Active Day, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[6],[17]			865			865
Investments, at fair value, ending balance		1,335	[2],[10]				1,335	[2],[10]		865	[1],[6],[17]
Investment, Identifier [Axis]: Active Day, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			689			689
Investments, at fair value, ending balance		861	[2],[10]				861	[2],[10]		689	[1],[5]
Investment, Identifier [Axis]: Active Day, Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			608			608
Investments, at fair value, ending balance		686	[2],[10]				686	[2],[10]		608	[1],[5]
Investment, Identifier [Axis]: Active Day, Inc., One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[6],[17]			597			597
Investments, at fair value, ending balance		605	[2],[10]				605	[2],[10]		597	[1],[6],[17]
Investment, Identifier [Axis]: Active Day, Inc., One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		595	[2],[10]				595	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Active Day, Inc., One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Active Day, Inc., One stop 9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	0					0
Investment, Identifier [Axis]: Acuity Eyecare Holdings, LLC, LLC interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			4,614			4,614
Investments, at fair value, ending balance		5,098	[2],[10]				5,098	[2],[10]		4,614	[1],[5]
Investment, Identifier [Axis]: Acuity Eyecare Holdings, LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,919			2,919
Investments, at fair value, ending balance		3,255	[2],[10]				3,255	[2],[10]		2,919	[1],[5]
Investment, Identifier [Axis]: Acuity Eyecare Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			16,177			16,177
Investments, at fair value, ending balance		16,014	[2],[10]				16,014	[2],[10]		16,177	[1],[5]
Investment, Identifier [Axis]: Acuity Eyecare Holdings, LLC, One stop 10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			443			443
Investments, at fair value, ending balance		441	[2],[10]				441	[2],[10]		443	[1],[5]
Investment, Identifier [Axis]: Acuity Eyecare Holdings, LLC, One stop 11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			279			279
Investments, at fair value, ending balance		321	[2],[10],[14]				321	[2],[10],[14]		279	[1],[5],[13]
Investment, Identifier [Axis]: Acuity Eyecare Holdings, LLC, One stop 12
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			212			212
Investments, at fair value, ending balance		210	[2],[10]				210	[2],[10]		212	[1],[5]
Investment, Identifier [Axis]: Acuity Eyecare Holdings, LLC, One stop 13
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			163			163
Investments, at fair value, ending balance		162	[2],[10]				162	[2],[10]		163	[1],[5]
Investment, Identifier [Axis]: Acuity Eyecare Holdings, LLC, One stop 14
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			109			109
Investments, at fair value, ending balance		125	[2],[10],[14]				125	[2],[10],[14]		109	[1],[5],[13]
Investment, Identifier [Axis]: Acuity Eyecare Holdings, LLC, One stop 15
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1			1
Investments, at fair value, ending balance		1	[2],[10]				1	[2],[10]		1	[1],[5]
Investment, Identifier [Axis]: Acuity Eyecare Holdings, LLC, One stop 16
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5]
Investment, Identifier [Axis]: Acuity Eyecare Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			14,733			14,733
Investments, at fair value, ending balance		15,697	[2],[10],[14]				15,697	[2],[10],[14]		14,733	[1],[5],[13]
Investment, Identifier [Axis]: Acuity Eyecare Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			3,996			3,996
Investments, at fair value, ending balance		3,975	[2],[10]				3,975	[2],[10]		3,996	[1],[5]
Investment, Identifier [Axis]: Acuity Eyecare Holdings, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			3,559			3,559
Investments, at fair value, ending balance		3,541	[2],[10]				3,541	[2],[10]		3,559	[1],[5]
Investment, Identifier [Axis]: Acuity Eyecare Holdings, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[17]			3,504			3,504
Investments, at fair value, ending balance		3,504	[2],[10],[18]				3,504	[2],[10],[18]		3,504	[1],[5],[17]
Investment, Identifier [Axis]: Acuity Eyecare Holdings, LLC, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			3,138			3,138
Investments, at fair value, ending balance		3,122	[2],[10]				3,122	[2],[10]		3,138	[1],[5]
Investment, Identifier [Axis]: Acuity Eyecare Holdings, LLC, One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,006			2,006
Investments, at fair value, ending balance		1,986	[2],[10]				1,986	[2],[10]		2,006	[1],[5]
Investment, Identifier [Axis]: Acuity Eyecare Holdings, LLC, One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,829			1,829
Investments, at fair value, ending balance		1,819	[2],[10]				1,819	[2],[10]		1,829	[1],[5]
Investment, Identifier [Axis]: Acuity Eyecare Holdings, LLC, One stop 9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,023			1,023
Investments, at fair value, ending balance		1,013	[2],[10]				1,013	[2],[10]		1,023	[1],[5]
Investment, Identifier [Axis]: Acuity Eyecare Holdings, LLC, Senior secured
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			108			108
Investments, at fair value, ending balance		107	[2],[10]				107	[2],[10]		108	[1],[5]
Investment, Identifier [Axis]: Alegeus Technologies Holdings Corp., Senior secured
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			535			535
Investments, at fair value, ending balance	[1],[5]									535
Investment, Identifier [Axis]: Alera Group, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[19]			35,416			35,416
Investments, at fair value, ending balance		35,234	[2],[10],[18],[20]				35,234	[2],[10],[18],[20]		35,416	[1],[5],[9],[19]
Investment, Identifier [Axis]: Alera Group, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			10,065			10,065
Investments, at fair value, ending balance		10,013	[2],[10]				10,013	[2],[10]		10,065	[1],[5],[16]
Investment, Identifier [Axis]: Alera Group, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			4,018			4,018
Investments, at fair value, ending balance		3,997	[2],[10]				3,997	[2],[10]		4,018	[1],[5],[16]
Investment, Identifier [Axis]: Alera Group, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,080			1,080
Investments, at fair value, ending balance		3,487	[2],[10]				3,487	[2],[10]		1,080	[1],[5]
Investment, Identifier [Axis]: Amalthea Parent, Inc., LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8]			390			390
Investments, at fair value, ending balance		447	[2],[10],[25],[28]				447	[2],[10],[25],[28]		390	[1],[5],[8]
Investment, Identifier [Axis]: Amalthea Parent, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[8],[9],[15],[16],[17],[19]			82,385			82,385
Investments, at fair value, ending balance		83,704	[2],[10],[18],[20],[25],[29]				83,704	[2],[10],[18],[20],[25],[29]		82,385	[1],[5],[6],[8],[9],[15],[16],[17],[19]
Investment, Identifier [Axis]: Amalthea Parent, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8]			328			328
Investments, at fair value, ending balance		520	[2],[10],[25],[29]				520	[2],[10],[25],[29]		328	[1],[5],[8]
Investment, Identifier [Axis]: Amberfield Acquisition Co., LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			447			447
Investments, at fair value, ending balance		446	[2],[10]				446	[2],[10]		447	[1],[5]
Investment, Identifier [Axis]: Amberfield Acquisition Co., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[16]			4,866			4,866
Investments, at fair value, ending balance		7,138	[2],[10],[18]				7,138	[2],[10],[18]		4,866	[1],[5],[9],[16]
Investment, Identifier [Axis]: Amberfield Acquisition Co., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		176	[2],[10]				176	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Amberfield Acquisition Co., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Anaplan, Inc., LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,492			1,492
Investments, at fair value, ending balance		1,568	[2],[10]				1,568	[2],[10]		1,492	[1],[5]
Investment, Identifier [Axis]: Anaplan, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[19]			24,680			24,680
Investments, at fair value, ending balance		24,618	[2],[10],[20]				24,618	[2],[10],[20]		24,680	[1],[5],[9],[19]
Investment, Identifier [Axis]: Anaplan, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			13,000			13,000
Investments, at fair value, ending balance		12,968	[2],[10]				12,968	[2],[10]		13,000	[1],[5]
Investment, Identifier [Axis]: Anaplan, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Any Hour, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			8,975			8,975
Investments, at fair value, ending balance		8,660	[2],[18]				8,660	[2],[18]		8,975	[1],[5],[15]
Investment, Identifier [Axis]: Any Hour, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			2,847			2,847
Investments, at fair value, ending balance		2,945	[2],[10],[14]				2,945	[2],[10],[14]		2,847	[1],[5],[13]
Investment, Identifier [Axis]: Any Hour, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			294			294
Investments, at fair value, ending balance		474	[2],[10]				474	[2],[10]		294	[1],[5]
Investment, Identifier [Axis]: Any Hour, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			230			230
Investments, at fair value, ending balance		150	[2],[10]				150	[2],[10]		230	[1],[5]
Investment, Identifier [Axis]: Apex Service Partners, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			4,390			4,390
Investments, at fair value, ending balance		8,856	[2],[10]				8,856	[2],[10]		4,390	[1],[5],[9]
Investment, Identifier [Axis]: Apex Service Partners, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,406			1,406
Investments, at fair value, ending balance		4,411	[2],[10]				4,411	[2],[10]		1,406	[1],[5]
Investment, Identifier [Axis]: Apex Service Partners, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,045			1,045
Investments, at fair value, ending balance		1,050	[2],[10]				1,050	[2],[10]		1,045	[1],[5]
Investment, Identifier [Axis]: Apex Service Partners, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			38			38
Investments, at fair value, ending balance		68	[2],[10]				68	[2],[10]		38	[1],[5]
Investment, Identifier [Axis]: Apothecary Products, LLC, Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,321			2,321
Investments, at fair value, ending balance		2,243	[2],[10]				2,243	[2],[10]		2,321	[1],[5]
Investment, Identifier [Axis]: Apothecary Products, LLC, Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		78	[2],[10]				78	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Appfire Technologies, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15],[19]			55,159			55,159
Investments, at fair value, ending balance		57,524	[2],[10],[18],[20]				57,524	[2],[10],[18],[20]		55,159	[1],[5],[15],[19]
Investment, Identifier [Axis]: Appfire Technologies, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,603			1,603
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		1,603	[1],[5]
Investment, Identifier [Axis]: Appfire Technologies, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Appfire Technologies, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Appriss Health Intermediate Holdings, Inc, Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			3,777			3,777
Investments, at fair value, ending balance	[1],[5],[26]									3,777
Investment, Identifier [Axis]: Aras Corporation, LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			531			531
Investments, at fair value, ending balance		666	[2],[10]				666	[2],[10]		531	[1],[5]
Investment, Identifier [Axis]: Aras Corporation, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13],[19]			28,740			28,740
Investments, at fair value, ending balance		28,596	[2],[10],[20]				28,596	[2],[10],[20]		28,740	[1],[5],[9],[13],[19]
Investment, Identifier [Axis]: Aras Corporation, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,217			1,217
Investments, at fair value, ending balance		2,000	[2],[10]				2,000	[2],[10]		1,217	[1],[5]
Investment, Identifier [Axis]: Aras Corporation, Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			2,108			2,108
Investments, at fair value, ending balance		2,227	[2],[10],[27]				2,227	[2],[10],[27]		2,108	[1],[5],[26]
Investment, Identifier [Axis]: Arch Global CCT Holdings Corp., Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[17]			3,128			3,128
Investments, at fair value, ending balance		3,145	[2],[10],[18]				3,145	[2],[10],[18]		3,128	[1],[5],[9],[17]
Investment, Identifier [Axis]: Arch Global CCT Holdings Corp., Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			629			629
Investments, at fair value, ending balance		632	[2],[10]				632	[2],[10]		629	[1],[5],[9]
Investment, Identifier [Axis]: Arch Global CCT Holdings Corp., Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			585			585
Investments, at fair value, ending balance		587	[2],[10]				587	[2],[10]		585	[1],[5]
Investment, Identifier [Axis]: Arch Global CCT Holdings Corp., Senior secured 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			93			93
Investments, at fair value, ending balance		99	[2],[10]				99	[2],[10]		93	[1],[5]
Investment, Identifier [Axis]: Arctic Wolf Networks, Inc. and Arctic Wolf Networks Canada, Inc., Preferred stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			7,470			7,470
Investments, at fair value, ending balance		8,455	[2],[10]				8,455	[2],[10]		7,470	[1],[5]
Investment, Identifier [Axis]: Arctic Wolf Networks, Inc. and Arctic Wolf Networks Canada, Inc., Preferred stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,959			1,959
Investments, at fair value, ending balance		2,217	[2],[10]				2,217	[2],[10]		1,959	[1],[5]
Investment, Identifier [Axis]: Arctic Wolf Networks, Inc. and Arctic Wolf Networks Canada, Inc., Preferred stock 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			449			449
Investments, at fair value, ending balance		509	[2],[10]				509	[2],[10]		449	[1],[5]
Investment, Identifier [Axis]: Arctic Wolf Networks, Inc. and Arctic Wolf Networks Canada, Inc., Warrant
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,393			2,393
Investments, at fair value, ending balance		2,767	[2],[10]				2,767	[2],[10]		2,393	[1],[5]
Investment, Identifier [Axis]: Armstrong Bidco Limited, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30],[31]			5,815			5,815
Investments, at fair value, ending balance		5,616	[2],[10],[25],[28],[32]				5,616	[2],[10],[25],[28],[32]		5,815	[1],[5],[8],[9],[30],[31]
Investment, Identifier [Axis]: Armstrong Bidco Limited, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			3,034			3,034
Investments, at fair value, ending balance		2,931	[2],[10],[25],[28],[32]				2,931	[2],[10],[25],[28],[32]		3,034	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: Arnott, LLC, LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	350					350
Investment, Identifier [Axis]: Arnott, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	4,712					4,712
Investment, Identifier [Axis]: Arnott, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	126					126
Investment, Identifier [Axis]: Arrow Buyer, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			25,104			25,104
Investments, at fair value, ending balance		24,977	[2],[10]				24,977	[2],[10]		25,104	[1],[5],[9]
Investment, Identifier [Axis]: Arrow Buyer, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,645			1,645
Investments, at fair value, ending balance		1,637	[2],[10]				1,637	[2],[10]		1,645	[1],[5]
Investment, Identifier [Axis]: Arrow Buyer, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Artifact Bidco, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,474			1,474
Investments, at fair value, ending balance		1,489	[2],[10]				1,489	[2],[10]		1,474	[1],[5]
Investment, Identifier [Axis]: Artifact Bidco, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(2)			(2)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(2)	[1],[5],[11]
Investment, Identifier [Axis]: Artifact Bidco, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(1)			(1)
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		(1)	[1],[5],[11]
Investment, Identifier [Axis]: Artifact Bidco, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(1)			(1)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(1)	[1],[5],[11]
Investment, Identifier [Axis]: Aspen Medical Products, LLC, LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			111			111
Investments, at fair value, ending balance		103	[2],[10]				103	[2],[10]		111	[1],[5]
Investment, Identifier [Axis]: Aspen Medical Products, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15],[17]			5,013			5,013
Investments, at fair value, ending balance		7,050	[2],[10],[18]				7,050	[2],[10],[18]		5,013	[1],[5],[15],[17]
Investment, Identifier [Axis]: Aspen Medical Products, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			321			321
Investments, at fair value, ending balance		458	[2],[10]				458	[2],[10]		321	[1],[5],[9]
Investment, Identifier [Axis]: Aspen Medical Products, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5]
Investment, Identifier [Axis]: Aspen Medical Products, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	895					895
Investment, Identifier [Axis]: Astute Holdings, Inc., LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			547			547
Investments, at fair value, ending balance		433	[2],[10]				433	[2],[10]		547	[1],[5]
Investment, Identifier [Axis]: Auvik Networks Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[13],[19]			10,663			10,663
Investments, at fair value, ending balance		10,841	[2],[10],[14],[20],[25],[29]				10,841	[2],[10],[14],[20],[25],[29]		10,663	[1],[5],[7],[8],[13],[19]
Investment, Identifier [Axis]: Auvik Networks Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[9],[13]			1,918			1,918
Investments, at fair value, ending balance		1,949	[2],[10],[14],[25],[29]				1,949	[2],[10],[14],[25],[29]		1,918	[1],[5],[7],[8],[9],[13]
Investment, Identifier [Axis]: Auvik Networks Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[9],[13]			976			976
Investments, at fair value, ending balance		993	[2],[10],[14],[25],[29]				993	[2],[10],[14],[25],[29]		976	[1],[5],[7],[8],[9],[13]
Investment, Identifier [Axis]: Auvik Networks Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8]			0			0
Investments, at fair value, ending balance		0	[2],[10],[25],[29]				0	[2],[10],[25],[29]		0	[1],[5],[7],[8]
Investment, Identifier [Axis]: Auvik Networks Inc., Preferred stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8]			504			504
Investments, at fair value, ending balance		544	[2],[10],[25],[29]				544	[2],[10],[25],[29]		504	[1],[5],[7],[8]
Investment, Identifier [Axis]: Auvik Networks Inc., Preferred stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8]			57			57
Investments, at fair value, ending balance		62	[2],[10],[25],[29]				62	[2],[10],[25],[29]		57	[1],[5],[7],[8]
Investment, Identifier [Axis]: Avalara, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			18,170			18,170
Investments, at fair value, ending balance	[1],[5],[9]									18,170
Investment, Identifier [Axis]: Avalara, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance	[1],[5],[11]									0
Investment, Identifier [Axis]: Ave Holdings III, Corp, LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			936			936
Investments, at fair value, ending balance		311	[2],[10]				311	[2],[10]		936	[1],[5]
Investment, Identifier [Axis]: Ave Holdings III, Corp, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[9]			23,420			23,420
Investments, at fair value, ending balance		22,834	[2],[10],[18]				22,834	[2],[10],[18]		23,420	[1],[5],[6],[9]
Investment, Identifier [Axis]: Ave Holdings III, Corp, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			6,108			6,108
Investments, at fair value, ending balance		5,955	[2],[10]				5,955	[2],[10]		6,108	[1],[5],[16]
Investment, Identifier [Axis]: Ave Holdings III, Corp, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			802			802
Investments, at fair value, ending balance		783	[2],[10]				783	[2],[10]		802	[1],[5]
Investment, Identifier [Axis]: Ave Holdings III, Corp, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		(6)	[2],[10],[12]				(6)	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Ave Holdings III, Corp, Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			17,541			17,541
Investments, at fair value, ending balance		18,648	[2],[10],[27]				18,648	[2],[10],[27]		17,541	[1],[5],[26]
Investment, Identifier [Axis]: Axiom Merger Sub Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			6,666			6,666
Investments, at fair value, ending balance	[1],[5],[9]									6,666
Investment, Identifier [Axis]: Axiom Merger Sub Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[31]			2,743			2,743
Investments, at fair value, ending balance	[1],[5],[8],[31]									2,743
Investment, Identifier [Axis]: Axiom Merger Sub Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,209			1,209
Investments, at fair value, ending balance	[1],[5],[9]									1,209
Investment, Identifier [Axis]: Axiom Merger Sub Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			174			174
Investments, at fair value, ending balance	[1],[5]									174
Investment, Identifier [Axis]: Axiom Merger Sub Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance	[1],[5]									0
Investment, Identifier [Axis]: Axiom Merger Sub Inc., One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(98)			(98)
Investments, at fair value, ending balance	[1],[5],[11]									(98)
Investment, Identifier [Axis]: Azul Systems, Inc., Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[15]			9,492			9,492
Investments, at fair value, ending balance		9,492	[2],[18]				9,492	[2],[18]		9,492	[1],[15]
Investment, Identifier [Axis]: Azul Systems, Inc., Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Azurite Intermediate Holdings, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			622			622
Investments, at fair value, ending balance		973	[2],[10]				973	[2],[10]		622	[1],[5]
Investment, Identifier [Axis]: Azurite Intermediate Holdings, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			428			428
Investments, at fair value, ending balance		428	[2],[10]				428	[2],[10]		428	[1],[5],[9]
Investment, Identifier [Axis]: Azurite Intermediate Holdings, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: BECO Holding Company, Inc., LP Interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			987			987
Investments, at fair value, ending balance	[1],[5]									987
Investment, Identifier [Axis]: BECO Holding Company, Inc., LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	917					917
Investment, Identifier [Axis]: BECO Holding Company, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[15],[16],[17]			40,999			40,999
Investments, at fair value, ending balance		40,788	[2],[10],[18]				40,788	[2],[10],[18]		40,999	[1],[5],[9],[15],[16],[17]
Investment, Identifier [Axis]: BECO Holding Company, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: BECO Holding Company, Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			17,976			17,976
Investments, at fair value, ending balance		19,284	[2],[10],[27]				19,284	[2],[10],[27]		17,976	[1],[5],[26]
Investment, Identifier [Axis]: BJH Holdings III Corp., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[15],[16]			69,940			69,940
Investments, at fair value, ending balance		70,109	[2],[10],[18]				70,109	[2],[10],[18]		69,940	[1],[5],[9],[15],[16]
Investment, Identifier [Axis]: BJH Holdings III Corp., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			666			666
Investments, at fair value, ending balance		5,589	[2],[10]				5,589	[2],[10]		666	[1],[5]
Investment, Identifier [Axis]: BJH Holdings III Corp., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	381					381
Investment, Identifier [Axis]: Baduhenna Bidco Limited, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30]			7,638			7,638
Investments, at fair value, ending balance		7,745	[2],[10],[25],[28]				7,745	[2],[10],[25],[28]		7,638	[1],[5],[8],[30]
Investment, Identifier [Axis]: Baduhenna Bidco Limited, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			4,550			4,550
Investments, at fair value, ending balance		4,482	[2],[10],[25],[28],[32]				4,482	[2],[10],[25],[28],[32]		4,550	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: Baduhenna Bidco Limited, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30]			1,886			1,886
Investments, at fair value, ending balance		1,912	[2],[10],[25],[28]				1,912	[2],[10],[25],[28]		1,886	[1],[5],[8],[30]
Investment, Identifier [Axis]: Baduhenna Bidco Limited, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			1,334			1,334
Investments, at fair value, ending balance		1,307	[2],[10],[25],[28],[32]				1,307	[2],[10],[25],[28],[32]		1,334	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: Baduhenna Bidco Limited, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			1,086			1,086
Investments, at fair value, ending balance		1,070	[2],[10],[25],[28],[32]				1,070	[2],[10],[25],[28],[32]		1,086	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: Baduhenna Bidco Limited, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			537			537
Investments, at fair value, ending balance		553	[2],[10],[25],[28],[32]				553	[2],[10],[25],[28],[32]		537	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: Baker Tilly Advisory Group, LP, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			3,301			3,301
Investments, at fair value, ending balance		3,284	[2],[10]				3,284	[2],[10]		3,301	[1],[5]
Investment, Identifier [Axis]: Baker Tilly Advisory Group, LP, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Baker Tilly Advisory Group, LP, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Bamboo US Bidco LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			2,689			2,689
Investments, at fair value, ending balance		2,726	[2],[10]				2,726	[2],[10]		2,689	[1],[5],[9],[13]
Investment, Identifier [Axis]: Bamboo US Bidco LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[13],[31]			1,863			1,863
Investments, at fair value, ending balance		1,835	[2],[10],[25],[32]				1,835	[2],[10],[25],[32]		1,863	[1],[5],[8],[9],[13],[31]
Investment, Identifier [Axis]: Bamboo US Bidco LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			197			197
Investments, at fair value, ending balance		417	[2],[10]				417	[2],[10]		197	[1],[5],[13]
Investment, Identifier [Axis]: Bamboo US Bidco LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(4)			(4)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(4)	[1],[5],[11]
Investment, Identifier [Axis]: Bamboo US Bidco LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	0					0
Investment, Identifier [Axis]: Bamboo US Bidco LLC, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: Banker's Toolbox, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			20,569			20,569
Investments, at fair value, ending balance		20,463	[2],[10],[18]				20,463	[2],[10],[18]		20,569	[1],[5],[16]
Investment, Identifier [Axis]: Banker's Toolbox, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Barteca Restaurants, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15],[17]			13,680			13,680
Investments, at fair value, ending balance		13,610	[2],[10],[18]				13,610	[2],[10],[18]		13,680	[1],[5],[15],[17]
Investment, Identifier [Axis]: Barteca Restaurants, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			690			690
Investments, at fair value, ending balance		686	[2],[10]				686	[2],[10]		690	[1],[5]
Investment, Identifier [Axis]: Barteca Restaurants, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			471			471
Investments, at fair value, ending balance		469	[2],[10]				469	[2],[10]		471	[1],[5]
Investment, Identifier [Axis]: Barteca Restaurants, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			40			40
Investments, at fair value, ending balance		170	[2],[10]				170	[2],[10]		40	[1],[5]
Investment, Identifier [Axis]: Batteries Plus Holding Corporation, LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,239			1,239
Investments, at fair value, ending balance		1,360	[2],[10]				1,360	[2],[10]		1,239	[1],[5]
Investment, Identifier [Axis]: Baxter Planning Systems, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			4,060			4,060
Investments, at fair value, ending balance		4,130	[2],[10],[14]				4,130	[2],[10],[14]		4,060	[1],[5],[9],[13]
Investment, Identifier [Axis]: Baxter Planning Systems, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Baxter Planning Systems, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Bayshore Intermediate #2, L.P., Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			6,231			6,231
Investments, at fair value, ending balance		7,109	[2],[10]				7,109	[2],[10]		6,231	[1],[5]
Investment, Identifier [Axis]: Bayshore Intermediate #2, L.P., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[19]			117,557			117,557
Investments, at fair value, ending balance		121,692	[2],[10],[14],[20]				121,692	[2],[10],[14],[20]		117,557	[1],[5],[13],[19]
Investment, Identifier [Axis]: Bayshore Intermediate #2, L.P., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Bayside Opco, LLC
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance				29,127			29,127		22,044	22,044
Gross additions							569			2,758
Gross reductions							(79)			(699)
Net change in unrealized appreciation (depreciation)							2,156			5,024
Net realized gain (loss)							0			0
Investments, at fair value, ending balance		31,773					31,773			29,127
Interest, dividend and fee income							1,624			3,660
Investment, Identifier [Axis]: Bayside Opco, LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			6,788			6,788
Investments, at fair value, ending balance		9,038	[2],[10]				9,038	[2],[10]		6,788	[1],[5]
Investment, Identifier [Axis]: Bayside Opco, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			12,845			12,845
Investments, at fair value, ending balance		12,786	[2],[10]				12,786	[2],[10]		12,845	[1],[5],[13]
Investment, Identifier [Axis]: Bayside Opco, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			4,499			4,499
Investments, at fair value, ending balance		4,523	[2],[10]				4,523	[2],[10]		4,499	[1],[5],[13]
Investment, Identifier [Axis]: Bayside Opco, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Bayside Opco, LLC, Subordinated debt
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			4,995			4,995
Investments, at fair value, ending balance		5,426	[2],[10],[14]				5,426	[2],[10],[14]		4,995	[1],[5],[13]
Investment, Identifier [Axis]: Belmont Instrument, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[6],[16],[17]			14,504			14,504
Investments, at fair value, ending balance		14,430	[2],[10],[18]				14,430	[2],[10],[18]		14,504	[1],[6],[16],[17]
Investment, Identifier [Axis]: Belmont Instrument, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			66			66
Investments, at fair value, ending balance		20	[2],[10]				20	[2],[10]		66	[1],[5]
Investment, Identifier [Axis]: Ben Nevis Midco Limited, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30]			561			561
Investments, at fair value, ending balance		561	[2],[10],[25],[28]				561	[2],[10],[25],[28]		561	[1],[5],[8],[9],[30]
Investment, Identifier [Axis]: Ben Nevis Midco Limited, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30]			378			378
Investments, at fair value, ending balance		378	[2],[10],[25],[28]				378	[2],[10],[25],[28]		378	[1],[5],[8],[9],[30]
Investment, Identifier [Axis]: Ben Nevis Midco Limited, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30]			60			60
Investments, at fair value, ending balance		92	[2],[10],[25],[28]				92	[2],[10],[25],[28]		60	[1],[5],[8],[30]
Investment, Identifier [Axis]: Ben Nevis Midco Limited, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30]			92			92
Investments, at fair value, ending balance		60	[2],[10],[25],[28]				60	[2],[10],[25],[28]		92	[1],[5],[8],[30]
Investment, Identifier [Axis]: Benefit Plan Administrators of Eau Claire, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[18]	12,956					12,956
Investment, Identifier [Axis]: Benefit Plan Administrators of Eau Claire, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	9,938					9,938
Investment, Identifier [Axis]: Benefit Plan Administrators of Eau Claire, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(14)					(14)
Investment, Identifier [Axis]: Benefit Plan Administrators of Eau Claire, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(45)					(45)
Investment, Identifier [Axis]: Benetech, Inc.
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance				1,793			1,793
Gross additions							269
Gross reductions							(459)
Net change in unrealized appreciation (depreciation)							420
Net realized gain (loss)							0
Investments, at fair value, ending balance		2,023					2,023			1,793
Interest, dividend and fee income							8
Investment, Identifier [Axis]: Benetech, Inc.
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance				1,793			1,793		1,353	1,353
Gross additions										780
Gross reductions										(843)
Net change in unrealized appreciation (depreciation)										503
Net realized gain (loss)										0
Investments, at fair value, ending balance										1,793
Interest, dividend and fee income										9
Investment, Identifier [Axis]: Benetech, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[21]			1,626			1,626
Investments, at fair value, ending balance		1,944	[2],[10],[14],[22]				1,944	[2],[10],[14],[22]		1,626	[1],[5],[13],[21]
Investment, Identifier [Axis]: Benetech, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[21]			167			167
Investments, at fair value, ending balance		79	[2],[10],[14],[22]				79	[2],[10],[14],[22]		167	[1],[5],[13],[21]
Investment, Identifier [Axis]: BestPass, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			52,602			52,602
Investments, at fair value, ending balance		52,602	[2],[10]				52,602	[2],[10]		52,602	[1],[5]
Investment, Identifier [Axis]: BestPass, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(26)			(26)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(26)	[1],[5],[11]
Investment, Identifier [Axis]: BestPass, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(35)			(35)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(35)	[1],[5],[11]
Investment, Identifier [Axis]: Biscuit Parent, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,332			1,332
Investments, at fair value, ending balance		20,105	[2],[10],[18]				20,105	[2],[10],[18]		1,332	[1],[5],[9]
Investment, Identifier [Axis]: Biscuit Parent, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Biscuit Parent, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: Blackbird Purchaser, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			4,476			4,476
Investments, at fair value, ending balance		4,454	[2],[10]				4,454	[2],[10]		4,476	[1],[5],[9]
Investment, Identifier [Axis]: Blackbird Purchaser, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			265			265
Investments, at fair value, ending balance		493	[2],[10]				493	[2],[10]		265	[1],[5]
Investment, Identifier [Axis]: Blackbird Purchaser, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			15			15
Investments, at fair value, ending balance		35	[2],[10]				35	[2],[10]		15	[1],[5]
Investment, Identifier [Axis]: Blades Buyer, Inc., Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[15],[17]			12,285			12,285
Investments, at fair value, ending balance		12,222	[2],[10],[18]				12,222	[2],[10],[18]		12,285	[1],[5],[9],[15],[17]
Investment, Identifier [Axis]: Blades Buyer, Inc., Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,743			1,743
Investments, at fair value, ending balance		1,734	[2],[10],[18]				1,734	[2],[10],[18]		1,743	[1],[5],[9]
Investment, Identifier [Axis]: Blades Buyer, Inc., Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,409			1,409
Investments, at fair value, ending balance		1,402	[2],[10]				1,402	[2],[10]		1,409	[1],[5],[9]
Investment, Identifier [Axis]: Blades Buyer, Inc., Senior secured 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			58			58
Investments, at fair value, ending balance		104	[2],[10]				104	[2],[10]		58	[1],[5]
Investment, Identifier [Axis]: Blast Bidco Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			4,905			4,905
Investments, at fair value, ending balance		4,881	[2],[10]				4,881	[2],[10]		4,905	[1],[5],[9]
Investment, Identifier [Axis]: Blast Bidco Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Bloomerang, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			4,142			4,142
Investments, at fair value, ending balance		4,142	[2],[10]				4,142	[2],[10]		4,142	[1],[5],[9]
Investment, Identifier [Axis]: Bloomerang, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		414	[2],[10]				414	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Bloomerang, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Blue River Pet Care, LLC, Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			856			856
Investments, at fair value, ending balance		782	[2],[10]				782	[2],[10]		856	[1],[5]
Investment, Identifier [Axis]: Blue River Pet Care, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[15],[16],[17]			62,942			62,942
Investments, at fair value, ending balance		12	[2],[10]				12	[2],[10]		62,942	[1],[5],[6],[15],[16],[17]
Investment, Identifier [Axis]: Blue River Pet Care, LLC, One stop 10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		415	[2],[10]				415	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Blue River Pet Care, LLC, One stop 11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	300					300
Investment, Identifier [Axis]: Blue River Pet Care, LLC, One stop 12
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	294					294
Investment, Identifier [Axis]: Blue River Pet Care, LLC, One stop 13
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	299					299
Investment, Identifier [Axis]: Blue River Pet Care, LLC, One stop 14
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	257					257
Investment, Identifier [Axis]: Blue River Pet Care, LLC, One stop 15
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	227					227
Investment, Identifier [Axis]: Blue River Pet Care, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			12,462			12,462
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		12,462	[1],[5],[9]
Investment, Identifier [Axis]: Blue River Pet Care, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			2,905			2,905
Investments, at fair value, ending balance		62,614	[2],[10],[18]				62,614	[2],[10],[18]		2,905	[1],[5],[9]
Investment, Identifier [Axis]: Blue River Pet Care, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			2,793			2,793
Investments, at fair value, ending balance		12,398	[2],[10]				12,398	[2],[10]		2,793	[1],[5],[9]
Investment, Identifier [Axis]: Blue River Pet Care, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,765			2,765
Investments, at fair value, ending balance		2,891	[2],[10]				2,891	[2],[10]		2,765	[1],[5]
Investment, Identifier [Axis]: Blue River Pet Care, LLC, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,125			2,125
Investments, at fair value, ending balance		2,779	[2],[10]				2,779	[2],[10]		2,125	[1],[5]
Investment, Identifier [Axis]: Blue River Pet Care, LLC, One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,258			1,258
Investments, at fair value, ending balance		2,751	[2],[10]				2,751	[2],[10]		1,258	[1],[5]
Investment, Identifier [Axis]: Blue River Pet Care, LLC, One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			417			417
Investments, at fair value, ending balance		2,114	[2],[10]				2,114	[2],[10]		417	[1],[5]
Investment, Identifier [Axis]: Blue River Pet Care, LLC, One stop 9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			150			150
Investments, at fair value, ending balance		1,252	[2],[10]				1,252	[2],[10]		150	[1],[5]
Investment, Identifier [Axis]: BlueMatrix Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			2,540			2,540
Investments, at fair value, ending balance		2,514	[2],[10]				2,514	[2],[10]		2,540	[1],[5],[15]
Investment, Identifier [Axis]: BlueMatrix Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		9,925	[2],[10]				9,925	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: BlueMatrix Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: BlueMatrix Holdings, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(5)					(5)
Investment, Identifier [Axis]: Bonterra LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[19]			91,501			91,501
Investments, at fair value, ending balance	[1],[5],[9],[19]									91,501
Investment, Identifier [Axis]: Bonterra LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			7,485			7,485
Investments, at fair value, ending balance	[1],[5]									7,485
Investment, Identifier [Axis]: Bonterra LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			3,778			3,778
Investments, at fair value, ending balance	[1],[5],[13]									3,778
Investment, Identifier [Axis]: Bonterra LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			226			226
Investments, at fair value, ending balance	[1],[5]									226
Investment, Identifier [Axis]: Borrower R365 Holdings, LLC, Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			4			4
Investments, at fair value, ending balance		4	[2],[10]				4	[2],[10]		4	[1],[5]
Investment, Identifier [Axis]: Borrower R365 Holdings, LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			11			11
Investments, at fair value, ending balance		11	[2],[10]				11	[2],[10]		11	[1],[5]
Investment, Identifier [Axis]: Borrower R365 Holdings, LLC, LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1			1
Investments, at fair value, ending balance		1	[2],[10]				1	[2],[10]		1	[1],[5]
Investment, Identifier [Axis]: Borrower R365 Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[19]			18,823			18,823
Investments, at fair value, ending balance		18,823	[2],[10],[20]				18,823	[2],[10],[20]		18,823	[1],[5],[19]
Investment, Identifier [Axis]: Borrower R365 Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,556			1,556
Investments, at fair value, ending balance		1,556	[2],[10]				1,556	[2],[10]		1,556	[1],[5],[9]
Investment, Identifier [Axis]: Borrower R365 Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			231			231
Investments, at fair value, ending balance		231	[2],[10]				231	[2],[10]		231	[1],[5]
Investment, Identifier [Axis]: Borrower R365 Holdings, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Borrower R365 Holdings, LLC, Preferred stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			302			302
Investments, at fair value, ending balance		282	[2],[10]				282	[2],[10]		302	[1],[5]
Investment, Identifier [Axis]: Borrower R365 Holdings, LLC, Preferred stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			15			15
Investments, at fair value, ending balance		15	[2],[10]				15	[2],[10]		15	[1],[5]
Investment, Identifier [Axis]: Borrower R365 Holdings, LLC, Preferred stock 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			6			6
Investments, at fair value, ending balance		5	[2],[10]				5	[2],[10]		6	[1],[5]
Investment, Identifier [Axis]: Borrower R365 Holdings, LLC, Preferred stock 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			4			4
Investments, at fair value, ending balance		4	[2],[10]				4	[2],[10]		4	[1],[5]
Investment, Identifier [Axis]: Borrower R365 Holdings, LLC, Preferred stock 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			68			68
Investments, at fair value, ending balance		64	[2],[10]				64	[2],[10]		68	[1],[5]
Investment, Identifier [Axis]: Bottomline Technologies, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			40,652			40,652
Investments, at fair value, ending balance		40,853	[2],[10]				40,853	[2],[10]		40,652	[1],[5],[9]
Investment, Identifier [Axis]: Bottomline Technologies, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			5,112			5,112
Investments, at fair value, ending balance		5,073	[2],[10]				5,073	[2],[10]		5,112	[1],[5],[9]
Investment, Identifier [Axis]: Bottomline Technologies, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(6)			(6)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(6)	[1],[5],[11]
Investment, Identifier [Axis]: BradyIFS Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[19]			4,842			4,842
Investments, at fair value, ending balance	[1],[5],[19]									4,842
Investment, Identifier [Axis]: BradyIFS Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			382			382
Investments, at fair value, ending balance	[1],[5]									382
Investment, Identifier [Axis]: BradyIFS Holdings, LLC., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[20]	5,196					5,196
Investment, Identifier [Axis]: BradyIFS Holdings, LLC., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	33					33
Investment, Identifier [Axis]: Bullhorn, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15],[16]			77,997			77,997
Investments, at fair value, ending balance		77,997	[2],[10],[18]				77,997	[2],[10],[18]		77,997	[1],[5],[15],[16]
Investment, Identifier [Axis]: Bullhorn, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[9],[15]			3,190			3,190
Investments, at fair value, ending balance		3,190	[2],[10],[18]				3,190	[2],[10],[18]		3,190	[1],[9],[15]
Investment, Identifier [Axis]: Bullhorn, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			1,643			1,643
Investments, at fair value, ending balance		1,643	[2],[10]				1,643	[2],[10]		1,643	[1],[5],[16]
Investment, Identifier [Axis]: Bullhorn, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			736			736
Investments, at fair value, ending balance		736	[2],[10]				736	[2],[10]		736	[1],[5],[9]
Investment, Identifier [Axis]: Bullhorn, Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			587			587
Investments, at fair value, ending balance		587	[2],[10]				587	[2],[10]		587	[1],[5],[9]
Investment, Identifier [Axis]: Bullhorn, Inc., One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Burning Glass Intermediate Holdings Company, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15],[17]			12,431			12,431
Investments, at fair value, ending balance		11,232	[2],[18]				11,232	[2],[18]		12,431	[1],[5],[15],[17]
Investment, Identifier [Axis]: Burning Glass Intermediate Holdings Company, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Bynder BidCo, Inc.& Bynder BidCo B.V., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[33]			8,332			8,332
Investments, at fair value, ending balance		8,332	[2],[10],[25],[34]				8,332	[2],[10],[25],[34]		8,332	[1],[5],[8],[9],[33]
Investment, Identifier [Axis]: Bynder BidCo, Inc.& Bynder BidCo B.V., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[33]			2,204			2,204
Investments, at fair value, ending balance		2,204	[2],[10],[25],[34]				2,204	[2],[10],[25],[34]		2,204	[1],[5],[8],[9],[33]
Investment, Identifier [Axis]: Bynder BidCo, Inc.& Bynder BidCo B.V., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[33]			0			0
Investments, at fair value, ending balance		0	[2],[10],[25],[34]				0	[2],[10],[25],[34]		0	[1],[5],[8],[33]
Investment, Identifier [Axis]: Bynder BidCo, Inc.& Bynder BidCo B.V., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11],[33]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12],[25],[34]				0	[2],[10],[12],[25],[34]		0	[1],[5],[8],[11],[33]
Investment, Identifier [Axis]: CAP-KSI Holdings, LLC, LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		88	[2],[10]				88	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: CAP-KSI Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			6,584			6,584
Investments, at fair value, ending balance		11,118	[2],[10]				11,118	[2],[10]		6,584	[1],[5]
Investment, Identifier [Axis]: CAP-KSI Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			182			182
Investments, at fair value, ending balance		384	[2],[10]				384	[2],[10]		182	[1],[5]
Investment, Identifier [Axis]: CAP-KSI Holdings, LLC, Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			645			645
Investments, at fair value, ending balance		687	[2],[10]				687	[2],[10]		645	[1],[5]
Investment, Identifier [Axis]: CB Buyer, Inc., LP Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			258			258
Investments, at fair value, ending balance	[1],[5]									258
Investment, Identifier [Axis]: CB Buyer, Inc., LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	182					182
Investment, Identifier [Axis]: CB Buyer, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			46,611			46,611
Investments, at fair value, ending balance		49,233	[2],[10]				49,233	[2],[10]		46,611	[1],[5]
Investment, Identifier [Axis]: CB Buyer, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: CB Buyer, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: CCSL Holdings, LLC, LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8]			680			680
Investments, at fair value, ending balance		642	[2],[10],[25]				642	[2],[10],[25]		680	[1],[5],[8]
Investment, Identifier [Axis]: CCSL Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[6],[8],[15],[17]			20,903			20,903
Investments, at fair value, ending balance		20,952	[2],[18],[25]				20,952	[2],[18],[25]		20,903	[1],[6],[8],[15],[17]
Investment, Identifier [Axis]: CCSL Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9]			5,642			5,642
Investments, at fair value, ending balance		5,656	[2],[10],[18],[25]				5,656	[2],[10],[18],[25]		5,642	[1],[5],[8],[9]
Investment, Identifier [Axis]: CCSL Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[31]			3,552			3,552
Investments, at fair value, ending balance		3,440	[2],[10],[25],[32]				3,440	[2],[10],[25],[32]		3,552	[1],[5],[8],[9],[31]
Investment, Identifier [Axis]: CCSL Holdings, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8]			3,472			3,472
Investments, at fair value, ending balance		3,480	[2],[10],[25]				3,480	[2],[10],[25]		3,472	[1],[5],[8]
Investment, Identifier [Axis]: CCSL Holdings, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8]			2,884			2,884
Investments, at fair value, ending balance		2,891	[2],[10],[18],[25]				2,891	[2],[10],[18],[25]		2,884	[1],[5],[8]
Investment, Identifier [Axis]: CCSL Holdings, LLC, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8]			116			116
Investments, at fair value, ending balance		370	[2],[10],[25]				370	[2],[10],[25]		116	[1],[5],[8]
Investment, Identifier [Axis]: CCSL Holdings, LLC, One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11]			(7)			(7)
Investments, at fair value, ending balance		0	[2],[10],[12],[25]				0	[2],[10],[12],[25]		(7)	[1],[5],[8],[11]
Investment, Identifier [Axis]: CCSL Holdings, LLC, One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11],[31]			(247)			(247)
Investments, at fair value, ending balance		31,881	[2],[10],[25],[32]				31,881	[2],[10],[25],[32]		(247)	[1],[5],[8],[11],[31]
Investment, Identifier [Axis]: CCSL Holdings, LLC, One stop 9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11],[31]			(48)			(48)
Investments, at fair value, ending balance		6,245	[2],[10],[25],[32]				6,245	[2],[10],[25],[32]		(48)	[1],[5],[8],[11],[31]
Investment, Identifier [Axis]: CG Group Holdings, LLC, LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			645			645
Investments, at fair value, ending balance		888	[2],[10]				888	[2],[10]		645	[1],[5]
Investment, Identifier [Axis]: CG Group Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[9],[13],[15],[17]			45,452			45,452
Investments, at fair value, ending balance		46,149	[2],[10],[14],[18]				46,149	[2],[10],[14],[18]		45,452	[1],[5],[6],[9],[13],[15],[17]
Investment, Identifier [Axis]: CG Group Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			698			698
Investments, at fair value, ending balance		796	[2],[10],[14]				796	[2],[10],[14]		698	[1],[5],[13]
Investment, Identifier [Axis]: CHA Vision Holdings, Inc., LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	531					531
Investment, Identifier [Axis]: CHA Vision Holdings, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	1,064					1,064
Investment, Identifier [Axis]: CHA Vision Holdings, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	145					145
Investment, Identifier [Axis]: CHA Vision Holdings, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	0					0
Investment, Identifier [Axis]: CHHJ Midco, LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			419			419
Investments, at fair value, ending balance		447	[2],[10],[27]				447	[2],[10],[27]		419	[1],[5],[26]
Investment, Identifier [Axis]: CHHJ Midco, LLC, Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[15],[17]			3,732			3,732
Investments, at fair value, ending balance		3,712	[2],[10],[18]				3,712	[2],[10],[18]		3,732	[1],[15],[17]
Investment, Identifier [Axis]: CHHJ Midco, LLC, Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: CHVAC Services Investment, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			301			301
Investments, at fair value, ending balance	[1],[5]									301
Investment, Identifier [Axis]: CHVAC Services Investment, LLC, Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	417					417
Investment, Identifier [Axis]: CHVAC Services Investment, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			2,945			2,945
Investments, at fair value, ending balance		5,011	[2],[10],[18]				5,011	[2],[10],[18]		2,945	[1],[5],[15]
Investment, Identifier [Axis]: CHVAC Services Investment, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,371			1,371
Investments, at fair value, ending balance		1,317	[2],[10]				1,317	[2],[10]		1,371	[1],[5]
Investment, Identifier [Axis]: CHVAC Services Investment, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		(2)	[2],[10],[12]				(2)	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: CHVAC Services Investment, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(44)					(44)
Investment, Identifier [Axis]: CI (Quercus) Intermediate Holdings, LLC, LP Interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			996			996
Investments, at fair value, ending balance	[1],[5]									996
Investment, Identifier [Axis]: CI (Quercus) Intermediate Holdings, LLC, LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	1,076					1,076
Investment, Identifier [Axis]: CI (Quercus) Intermediate Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[15]			27,427			27,427
Investments, at fair value, ending balance	[1],[5],[9],[15]									27,427
Investment, Identifier [Axis]: CI (Quercus) Intermediate Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			53			53
Investments, at fair value, ending balance	[1],[5]									53
Investment, Identifier [Axis]: CI (Quercus) Intermediate Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance	[1],[5],[11]									0
Investment, Identifier [Axis]: CI (Quercus) Intermediate Holdings, LLC., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[18]	29,375					29,375
Investment, Identifier [Axis]: CI (Quercus) Intermediate Holdings, LLC., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: CI (Quercus) Intermediate Holdings, LLC., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: CMI Parent Inc., Common stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			626			626
Investments, at fair value, ending balance		651	[2],[10]				651	[2],[10]		626	[1],[5]
Investment, Identifier [Axis]: CMI Parent Inc., Common stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			716			716
Investments, at fair value, ending balance		905	[2],[10]				905	[2],[10]		716	[1],[5]
Investment, Identifier [Axis]: CMI Parent Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			22,468			22,468
Investments, at fair value, ending balance		22,468	[2],[18]				22,468	[2],[18]		22,468	[1],[5]
Investment, Identifier [Axis]: CMI Parent Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15],[19]			19,789			19,789
Investments, at fair value, ending balance		19,784	[2],[18],[20]				19,784	[2],[18],[20]		19,789	[1],[5],[15],[19]
Investment, Identifier [Axis]: CMI Parent Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			8,899			8,899
Investments, at fair value, ending balance	[1],[5],[9]									8,899
Investment, Identifier [Axis]: CMI Parent Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(3)			(3)
Investments, at fair value, ending balance		8,898	[2],[10],[18]				8,898	[2],[10],[18]		(3)	[1],[5],[11]
Investment, Identifier [Axis]: CMI Parent Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	0					0
Investment, Identifier [Axis]: CMI Parent Inc., Senior secured
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[18],[20]	9,483					9,483
Investment, Identifier [Axis]: CMI Parent Inc., Senior secured
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[19]			9,485			9,485
Investments, at fair value, ending balance	[1],[5],[19]									9,485
Investment, Identifier [Axis]: COP Hometown Acquisitions, Inc., Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			2,400			2,400
Investments, at fair value, ending balance		5,518	[2],[10]				5,518	[2],[10]		2,400	[1],[5],[9]
Investment, Identifier [Axis]: COP Hometown Acquisitions, Inc., Senior secured 10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			922			922
Investments, at fair value, ending balance		692	[2],[10]				692	[2],[10]		922	[1],[5]
Investment, Identifier [Axis]: COP Hometown Acquisitions, Inc., Senior secured 11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: COP Hometown Acquisitions, Inc., Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			2,339			2,339
Investments, at fair value, ending balance		2,388	[2],[10]				2,388	[2],[10]		2,339	[1],[5],[9]
Investment, Identifier [Axis]: COP Hometown Acquisitions, Inc., Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,533			1,533
Investments, at fair value, ending balance		2,327	[2],[10]				2,327	[2],[10]		1,533	[1],[5],[9]
Investment, Identifier [Axis]: COP Hometown Acquisitions, Inc., Senior secured 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,083			1,083
Investments, at fair value, ending balance		1,525	[2],[10]				1,525	[2],[10]		1,083	[1],[5],[9]
Investment, Identifier [Axis]: COP Hometown Acquisitions, Inc., Senior secured 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,154			1,154
Investments, at fair value, ending balance		1,376	[2],[10]				1,376	[2],[10]		1,154	[1],[5],[9]
Investment, Identifier [Axis]: COP Hometown Acquisitions, Inc., Senior secured 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			696			696
Investments, at fair value, ending balance		1,148	[2],[10]				1,148	[2],[10]		696	[1],[5],[9]
Investment, Identifier [Axis]: COP Hometown Acquisitions, Inc., Senior secured 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		1,077	[2],[10]				1,077	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: COP Hometown Acquisitions, Inc., Senior secured 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,383			1,383
Investments, at fair value, ending balance		1,041	[2],[10]				1,041	[2],[10]		1,383	[1],[5]
Investment, Identifier [Axis]: COP Hometown Acquisitions, Inc., Senior secured 9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,045			1,045
Investments, at fair value, ending balance		917	[2],[10]				917	[2],[10]		1,045	[1],[5],[9]
Investment, Identifier [Axis]: CRH Healthcare Purchaser, Inc., LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			625			625
Investments, at fair value, ending balance		743	[2],[10]				743	[2],[10]		625	[1],[5]
Investment, Identifier [Axis]: CRH Healthcare Purchaser, Inc., Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			23,379			23,379
Investments, at fair value, ending balance		23,282	[2],[10],[18]				23,282	[2],[10],[18]		23,379	[1],[5],[9]
Investment, Identifier [Axis]: CRH Healthcare Purchaser, Inc., Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[9],[15]			6,318			6,318
Investments, at fair value, ending balance		6,286	[2],[10],[18]				6,286	[2],[10],[18]		6,318	[1],[9],[15]
Investment, Identifier [Axis]: CRH Healthcare Purchaser, Inc., Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			5,667			5,667
Investments, at fair value, ending balance		5,638	[2],[10],[18]				5,638	[2],[10],[18]		5,667	[1],[5],[15]
Investment, Identifier [Axis]: CRH Healthcare Purchaser, Inc., Senior secured 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			4,281			4,281
Investments, at fair value, ending balance		4,258	[2],[10]				4,258	[2],[10]		4,281	[1],[5],[9]
Investment, Identifier [Axis]: CRH Healthcare Purchaser, Inc., Senior secured 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			240			240
Investments, at fair value, ending balance		30	[2],[10]				30	[2],[10]		240	[1],[5]
Investment, Identifier [Axis]: CST Holding Company, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[9],[16]			34,063			34,063
Investments, at fair value, ending balance		33,889	[2],[10]				33,889	[2],[10]		34,063	[1],[9],[16]
Investment, Identifier [Axis]: CST Holding Company, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: CVP Holdco, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			13,529			13,529
Investments, at fair value, ending balance		13,529	[2],[10]				13,529	[2],[10]		13,529	[1],[5]
Investment, Identifier [Axis]: CVP Holdco, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		92	[2],[10]				92	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: CVP Holdco, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Caerus Midco 3 S.A.R.L., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[23]			29,117			29,117
Investments, at fair value, ending balance		29,261	[2],[10],[18],[25]				29,261	[2],[10],[18],[25]		29,117	[1],[5],[8],[9],[23]
Investment, Identifier [Axis]: Caerus Midco 3 S.A.R.L., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[23]			4,827			4,827
Investments, at fair value, ending balance		4,851	[2],[10],[25]				4,851	[2],[10],[25]		4,827	[1],[5],[8],[9],[23]
Investment, Identifier [Axis]: Caerus Midco 3 S.A.R.L., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[23]			1,941			1,941
Investments, at fair value, ending balance		4,476	[2],[10],[25]				4,476	[2],[10],[25]		1,941	[1],[5],[8],[23]
Investment, Identifier [Axis]: Caerus Midco 3 S.A.R.L., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[23]			308			308
Investments, at fair value, ending balance		710	[2],[10],[25]				710	[2],[10],[25]		308	[1],[5],[8],[23]
Investment, Identifier [Axis]: Caerus Midco 3 S.A.R.L., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[23]			256			256
Investments, at fair value, ending balance		14	[2],[10],[25]				14	[2],[10],[25]		256	[1],[5],[8],[23]
Investment, Identifier [Axis]: Cafe Rio Holding, Inc. Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			760			760
Investments, at fair value, ending balance	[1],[5]									760
Investment, Identifier [Axis]: Cafe Rio Holding, Inc., Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	446					446
Investment, Identifier [Axis]: Cafe Rio Holding, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[17]			17,827			17,827
Investments, at fair value, ending balance		17,552	[2],[10],[18]				17,552	[2],[10],[18]		17,827	[1],[5],[6],[17]
Investment, Identifier [Axis]: Cafe Rio Holding, Inc., One stop 10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			96			96
Investments, at fair value, ending balance		95	[2],[10]				95	[2],[10]		96	[1],[5]
Investment, Identifier [Axis]: Cafe Rio Holding, Inc., One stop 11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			78			78
Investments, at fair value, ending balance		76	[2],[10]				76	[2],[10]		78	[1],[5]
Investment, Identifier [Axis]: Cafe Rio Holding, Inc., One stop 12
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			49			49
Investments, at fair value, ending balance		48	[2],[10]				48	[2],[10]		49	[1],[5]
Investment, Identifier [Axis]: Cafe Rio Holding, Inc., One stop 13
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(1)			(1)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(1)	[1],[5],[11]
Investment, Identifier [Axis]: Cafe Rio Holding, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[17]			3,178			3,178
Investments, at fair value, ending balance		3,129	[2],[10],[18]				3,129	[2],[10],[18]		3,178	[1],[5],[17]
Investment, Identifier [Axis]: Cafe Rio Holding, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[17]			2,135			2,135
Investments, at fair value, ending balance		2,102	[2],[10],[18]				2,102	[2],[10],[18]		2,135	[1],[5],[17]
Investment, Identifier [Axis]: Cafe Rio Holding, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[6],[17]			1,355			1,355
Investments, at fair value, ending balance		1,334	[2],[18]				1,334	[2],[18]		1,355	[1],[6],[17]
Investment, Identifier [Axis]: Cafe Rio Holding, Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[17]			1,196			1,196
Investments, at fair value, ending balance		1,178	[2],[10],[18]				1,178	[2],[10],[18]		1,196	[1],[5],[17]
Investment, Identifier [Axis]: Cafe Rio Holding, Inc., One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			185			185
Investments, at fair value, ending balance		176	[2],[10]				176	[2],[10]		185	[1],[5]
Investment, Identifier [Axis]: Cafe Rio Holding, Inc., One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			171			171
Investments, at fair value, ending balance		169	[2],[10]				169	[2],[10]		171	[1],[5]
Investment, Identifier [Axis]: Cafe Rio Holding, Inc., One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			123			123
Investments, at fair value, ending balance		121	[2],[10]				121	[2],[10]		123	[1],[5]
Investment, Identifier [Axis]: Cafe Rio Holding, Inc., One stop 9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			98			98
Investments, at fair value, ending balance		96	[2],[10]				96	[2],[10]		98	[1],[5]
Investment, Identifier [Axis]: Calabrio, Inc., LP interest 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,135			1,135
Investments, at fair value, ending balance		1,134	[2],[10]				1,134	[2],[10]		1,135	[1],[5]
Investment, Identifier [Axis]: Calabrio, Inc., LP interest 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Calabrio, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[19]			74,669			74,669
Investments, at fair value, ending balance		74,295	[2],[10],[20]				74,295	[2],[10],[20]		74,669	[1],[5],[9],[19]
Investment, Identifier [Axis]: Calabrio, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			5,487			5,487
Investments, at fair value, ending balance		5,459	[2],[10]				5,459	[2],[10]		5,487	[1],[5],[9]
Investment, Identifier [Axis]: Calabrio, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		202	[2],[10]				202	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Camelia Bidco Limited, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30],[31]			5,411			5,411
Investments, at fair value, ending balance		5,227	[2],[10],[25],[28],[32]				5,227	[2],[10],[25],[28],[32]		5,411	[1],[5],[8],[9],[30],[31]
Investment, Identifier [Axis]: Camelia Bidco Limited, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			766			766
Investments, at fair value, ending balance		740	[2],[10],[25],[28],[32]				740	[2],[10],[25],[28],[32]		766	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: Camelia Bidco Limited, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			346			346
Investments, at fair value, ending balance		313	[2],[10],[25],[28],[32]				313	[2],[10],[25],[28],[32]		346	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: Camelia Bidco Limited, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11],[30],[31]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12],[25],[28],[32]				0	[2],[10],[12],[25],[28],[32]		0	[1],[5],[8],[11],[30],[31]
Investment, Identifier [Axis]: Captive Resources Midco, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			15,470			15,470
Investments, at fair value, ending balance		23,291	[2],[10]				23,291	[2],[10]		15,470	[1],[5],[9],[13]
Investment, Identifier [Axis]: Captive Resources Midco, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Cavender Stores L.P. Senior Secured
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[15]			5,459			5,459
Investments, at fair value, ending balance	[1],[15]									5,459
Investment, Identifier [Axis]: Cavender Stores L.P., Senior secured
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[18]	5,431					5,431
Investment, Identifier [Axis]: Celerion Buyer, Inc., LP units 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,302			1,302
Investments, at fair value, ending balance		890	[2],[10],[27]				890	[2],[10],[27]		1,302	[1],[5]
Investment, Identifier [Axis]: Celerion Buyer, Inc., LP units 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			982			982
Investments, at fair value, ending balance		1,961	[2],[10]				1,961	[2],[10]		982	[1],[5]
Investment, Identifier [Axis]: Celerion Buyer, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[6],[15],[17]			29,605			29,605
Investments, at fair value, ending balance		31,022	[2],[10],[18]				31,022	[2],[10],[18]		29,605	[1],[6],[15],[17]
Investment, Identifier [Axis]: Celerion Buyer, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Celerion Buyer, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Celerion Buyer, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[18]	22,012					22,012
Investment, Identifier [Axis]: Ceres Groupe SAS & Ceres PikCo, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[31],[35]			16,430			16,430
Investments, at fair value, ending balance		16,114	[2],[10],[25],[32],[36]				16,114	[2],[10],[25],[32],[36]		16,430	[1],[5],[8],[31],[35]
Investment, Identifier [Axis]: Ceres Groupe SAS & Ceres PikCo, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[31],[35]			0			0
Investments, at fair value, ending balance		0	[2],[10],[25],[32],[36]				0	[2],[10],[25],[32],[36]		0	[1],[5],[8],[31],[35]
Investment, Identifier [Axis]: Ceres Groupe SAS & Ceres PikCo, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[31],[35]			0			0
Investments, at fair value, ending balance		0	[2],[10],[25],[32],[36]				0	[2],[10],[25],[32],[36]		0	[1],[5],[8],[31],[35]
Investment, Identifier [Axis]: Ceres Groupe SAS & Ceres PikCo, Subordinated debt
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[13],[31],[35]			1,916			1,916
Investments, at fair value, ending balance		1,994	[2],[10],[14],[25],[32],[36]				1,994	[2],[10],[14],[25],[32],[36]		1,916	[1],[5],[8],[13],[31],[35]
Investment, Identifier [Axis]: Certus Pest, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[15],[17]			1,730			1,730
Investments, at fair value, ending balance		1,730	[2],[18]				1,730	[2],[18]		1,730	[1],[15],[17]
Investment, Identifier [Axis]: Certus Pest, Inc., One stop 10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			142			142
Investments, at fair value, ending balance		260	[2],[10]				260	[2],[10]		142	[1],[5]
Investment, Identifier [Axis]: Certus Pest, Inc., One stop 11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			60			60
Investments, at fair value, ending balance		142	[2],[10]				142	[2],[10]		60	[1],[5]
Investment, Identifier [Axis]: Certus Pest, Inc., One stop 12
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		60	[2],[10]				60	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Certus Pest, Inc., One stop 13
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	0					0
Investment, Identifier [Axis]: Certus Pest, Inc., One stop 14
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: Certus Pest, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[15],[17]			1,659			1,659
Investments, at fair value, ending balance		1,659	[2],[18]				1,659	[2],[18]		1,659	[1],[15],[17]
Investment, Identifier [Axis]: Certus Pest, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,197			1,197
Investments, at fair value, ending balance		1,197	[2],[10],[18]				1,197	[2],[10],[18]		1,197	[1],[5]
Investment, Identifier [Axis]: Certus Pest, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[15],[17]			1,182			1,182
Investments, at fair value, ending balance		1,182	[2],[18]				1,182	[2],[18]		1,182	[1],[15],[17]
Investment, Identifier [Axis]: Certus Pest, Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			820			820
Investments, at fair value, ending balance		820	[2],[10],[18]				820	[2],[10],[18]		820	[1],[5],[15]
Investment, Identifier [Axis]: Certus Pest, Inc., One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[15],[17]			723			723
Investments, at fair value, ending balance		723	[2],[18]				723	[2],[18]		723	[1],[15],[17]
Investment, Identifier [Axis]: Certus Pest, Inc., One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			704			704
Investments, at fair value, ending balance		704	[2],[10]				704	[2],[10]		704	[1],[5]
Investment, Identifier [Axis]: Certus Pest, Inc., One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			416			416
Investments, at fair value, ending balance		416	[2],[10],[18]				416	[2],[10],[18]		416	[1],[5],[15]
Investment, Identifier [Axis]: Certus Pest, Inc., One stop 9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			260			260
Investments, at fair value, ending balance		394	[2],[10]				394	[2],[10]		260	[1],[5]
Investment, Identifier [Axis]: Chase Industries, Inc., Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[37]			13,145			13,145
Investments, at fair value, ending balance		13,215	[2],[10],[14],[38]				13,215	[2],[10],[14],[38]		13,145	[1],[5],[13],[37]
Investment, Identifier [Axis]: Chase Industries, Inc., Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[37]			1,242			1,242
Investments, at fair value, ending balance		1,249	[2],[10],[14],[38]				1,249	[2],[10],[14],[38]		1,242	[1],[5],[13],[37]
Investment, Identifier [Axis]: Chase Industries, Inc., Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[37]			228			228
Investments, at fair value, ending balance		273	[2],[10],[14],[38]				273	[2],[10],[14],[38]		228	[1],[5],[13],[37]
Investment, Identifier [Axis]: Chase Intermediate, LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			337			337
Investments, at fair value, ending balance		398	[2],[10]				398	[2],[10]		337	[1],[5]
Investment, Identifier [Axis]: Chase Intermediate, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[15],[16],[17]			49,331			49,331
Investments, at fair value, ending balance		49,079	[2],[10],[18]				49,079	[2],[10],[18]		49,331	[1],[5],[9],[15],[16],[17]
Investment, Identifier [Axis]: Chase Intermediate, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		80	[2],[10]				80	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Chase Intermediate, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			938			938
Investments, at fair value, ending balance		1,607	[2],[10]				1,607	[2],[10]		938	[1],[5]
Investment, Identifier [Axis]: Chestnut Optical Midco, Inc.
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance				93,864			93,864
Gross additions							1,388
Gross reductions							0
Net change in unrealized appreciation (depreciation)							1,825
Net realized gain (loss)							0
Investments, at fair value, ending balance		97,077					97,077			93,864
Interest, dividend and fee income							1,709
Investment, Identifier [Axis]: Chestnut Optical Midco, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	42,135					42,135
Investment, Identifier [Axis]: Chestnut Optical Midco, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(183)					(183)
Investment, Identifier [Axis]: Chestnut Optical Midco, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(37)					(37)
Investment, Identifier [Axis]: Citrin Cooperman Advisors LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			8,058			8,058
Investments, at fair value, ending balance		8,017	[2],[10]				8,017	[2],[10]		8,058	[1],[5]
Investment, Identifier [Axis]: Citrin Cooperman Advisors LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			3,498			3,498
Investments, at fair value, ending balance		3,480	[2],[10]				3,480	[2],[10]		3,498	[1],[5],[16]
Investment, Identifier [Axis]: Citrin Cooperman Advisors LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,038			1,038
Investments, at fair value, ending balance		1,034	[2],[10]				1,034	[2],[10]		1,038	[1],[5]
Investment, Identifier [Axis]: Citrin Cooperman Advisors LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			664			664
Investments, at fair value, ending balance		1,741	[2],[10]				1,741	[2],[10]		664	[1],[5]
Investment, Identifier [Axis]: Citrin Cooperman Advisors LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			253			253
Investments, at fair value, ending balance		252	[2],[10]				252	[2],[10]		253	[1],[5],[9]
Investment, Identifier [Axis]: CivicPlus, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[19]			9,175			9,175
Investments, at fair value, ending balance		9,175	[2],[10],[20]				9,175	[2],[10],[20]		9,175	[1],[5],[13],[19]
Investment, Identifier [Axis]: CivicPlus, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			5,430			5,430
Investments, at fair value, ending balance		5,430	[2],[10]				5,430	[2],[10]		5,430	[1],[5],[9],[13]
Investment, Identifier [Axis]: CivicPlus, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			4,301			4,301
Investments, at fair value, ending balance		4,301	[2],[10]				4,301	[2],[10]		4,301	[1],[5],[9],[13]
Investment, Identifier [Axis]: CivicPlus, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			552			552
Investments, at fair value, ending balance		606	[2],[10],[14]				606	[2],[10],[14]		552	[1],[5],[13]
Investment, Identifier [Axis]: CivicPlus, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Cloudbees ., Preferred stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			797			797
Investments, at fair value, ending balance	[1],[5]									797
Investment, Identifier [Axis]: Cloudbees, Inc., Preferred stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,021			2,021
Investments, at fair value, ending balance		2,086	[2],[10]				2,086	[2],[10]		2,021	[1],[5]
Investment, Identifier [Axis]: Cloudbees, Inc., Preferred stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	799					799
Investment, Identifier [Axis]: Cloudbees, Inc., Warrant
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,157			1,157
Investments, at fair value, ending balance		1,089	[2],[10]				1,089	[2],[10]		1,157	[1],[5]
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			27			27
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		27	[1],[5]
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			14,651			14,651
Investments, at fair value, ending balance		14,761	[2],[10],[18]				14,761	[2],[10],[18]		14,651	[1],[5],[16]
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			4,913			4,913
Investments, at fair value, ending balance		4,950	[2],[10]				4,950	[2],[10]		4,913	[1],[5]
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			3,711			3,711
Investments, at fair value, ending balance		3,739	[2],[10]				3,739	[2],[10]		3,711	[1],[5],[9]
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			128			128
Investments, at fair value, ending balance		146	[2],[10]				146	[2],[10]		128	[1],[5]
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			6,317			6,317
Investments, at fair value, ending balance		6,365	[2],[10]				6,365	[2],[10]		6,317	[1],[5]
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(80)			(80)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(80)	[1],[5],[11]
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Preferred stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			17,048			17,048
Investments, at fair value, ending balance		18,254	[2],[10],[27]				18,254	[2],[10],[27]		17,048	[1],[5],[26]
Investment, Identifier [Axis]: Cobalt Buyer Sub, Inc., Preferred stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			306			306
Investments, at fair value, ending balance		241	[2],[10]				241	[2],[10]		306	[1],[5]
Investment, Identifier [Axis]: Cobepa BlueSky Aggregator, SCSp, LP Interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			670			670
Investments, at fair value, ending balance	[1],[5]									670
Investment, Identifier [Axis]: Cobepa BlueSky Aggregator, SCSp, LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	514					514
Investment, Identifier [Axis]: Cobepa BlueSky Aggregator, SCSp, LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			41			41
Investments, at fair value, ending balance		42	[2],[10],[27]				42	[2],[10],[27]		41	[1],[5]
Investment, Identifier [Axis]: Cobepa BlueSky Aggregator, SCSp, Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			53			53
Investments, at fair value, ending balance		57	[2],[10],[27]				57	[2],[10],[27]		53	[1],[5],[26]
Investment, Identifier [Axis]: Collision SP Subco, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			886			886
Investments, at fair value, ending balance		873	[2],[10]				873	[2],[10]		886	[1],[5],[9]
Investment, Identifier [Axis]: Collision SP Subco, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			162			162
Investments, at fair value, ending balance		393	[2],[10]				393	[2],[10]		162	[1],[5]
Investment, Identifier [Axis]: Collision SP Subco, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			14			14
Investments, at fair value, ending balance		13	[2],[10]				13	[2],[10]		14	[1],[5]
Investment, Identifier [Axis]: Color Intermediate, LLC, Senior secured
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			17,565			17,565
Investments, at fair value, ending balance		17,477	[2],[10],[18]				17,477	[2],[10],[18]		17,565	[1],[5],[9]
Investment, Identifier [Axis]: Community Care Partners, LLC, One stop
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			3,385			3,385
Investments, at fair value, ending balance		3,472	[2],[10]				3,472	[2],[10]		3,385	[1],[5],[9]
Investment, Identifier [Axis]: Connexin Software, Inc., LLC interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			301			301
Investments, at fair value, ending balance		319	[2],[10]				319	[2],[10]		301	[1],[5]
Investment, Identifier [Axis]: Connexin Software, Inc., LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			23			23
Investments, at fair value, ending balance		26	[2],[10]				26	[2],[10]		23	[1],[5]
Investment, Identifier [Axis]: Connexin Software, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			11,759			11,759
Investments, at fair value, ending balance		11,759	[2],[10]				11,759	[2],[10]		11,759	[1],[5],[9]
Investment, Identifier [Axis]: Connexin Software, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Consilio Midco Limited, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30],[31]			38,182			38,182
Investments, at fair value, ending balance		36,907	[2],[10],[25],[28],[32]				36,907	[2],[10],[25],[28],[32]		38,182	[1],[5],[8],[9],[30],[31]
Investment, Identifier [Axis]: Consilio Midco Limited, One stop 10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			130			130
Investments, at fair value, ending balance		204	[2],[10],[25],[28]				204	[2],[10],[25],[28]		130	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: Consilio Midco Limited, One stop 11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			127			127
Investments, at fair value, ending balance		160	[2],[10],[25],[28]				160	[2],[10],[25],[28]		127	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: Consilio Midco Limited, One stop 12
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			95			95
Investments, at fair value, ending balance		126	[2],[10],[25],[28],[32]				126	[2],[10],[25],[28],[32]		95	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: Consilio Midco Limited, One stop 13
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			114			114
Investments, at fair value, ending balance		122	[2],[10],[25],[28],[32]				122	[2],[10],[25],[28],[32]		114	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: Consilio Midco Limited, One stop 14
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			60			60
Investments, at fair value, ending balance		110	[2],[10],[25],[28],[32]				110	[2],[10],[25],[28],[32]		60	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: Consilio Midco Limited, One stop 15
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30]			140			140
Investments, at fair value, ending balance		81	[2],[10],[25],[28],[32]				81	[2],[10],[25],[28],[32]		140	[1],[5],[8],[30]
Investment, Identifier [Axis]: Consilio Midco Limited, One stop 16
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30]			0			0
Investments, at fair value, ending balance		65	[2],[10],[25],[28]				65	[2],[10],[25],[28]		0	[1],[5],[8],[30]
Investment, Identifier [Axis]: Consilio Midco Limited, One stop 17
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30]			58			58
Investments, at fair value, ending balance		58	[2],[10],[25],[28],[32]				58	[2],[10],[25],[28],[32]		58	[1],[5],[8],[30]
Investment, Identifier [Axis]: Consilio Midco Limited, One stop 18
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[28]	0					0
Investment, Identifier [Axis]: Consilio Midco Limited, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30]			15,686			15,686
Investments, at fair value, ending balance		15,604	[2],[10],[18],[25],[28]				15,604	[2],[10],[18],[25],[28]		15,686	[1],[5],[8],[9],[30]
Investment, Identifier [Axis]: Consilio Midco Limited, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[8],[16],[17],[30]			15,587			15,587
Investments, at fair value, ending balance		15,507	[2],[10],[18],[25],[28]				15,507	[2],[10],[18],[25],[28]		15,587	[1],[8],[16],[17],[30]
Investment, Identifier [Axis]: Consilio Midco Limited, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[8],[15],[17],[30]			2,935			2,935
Investments, at fair value, ending balance		2,919	[2],[18],[25],[28]				2,919	[2],[18],[25],[28]		2,935	[1],[8],[15],[17],[30]
Investment, Identifier [Axis]: Consilio Midco Limited, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[8],[15],[17],[30]			1,951			1,951
Investments, at fair value, ending balance		1,941	[2],[18],[25],[28]				1,941	[2],[18],[25],[28]		1,951	[1],[8],[15],[17],[30]
Investment, Identifier [Axis]: Consilio Midco Limited, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[15],[30]			998			998
Investments, at fair value, ending balance		992	[2],[10],[18],[25],[28]				992	[2],[10],[18],[25],[28]		998	[1],[5],[8],[15],[30]
Investment, Identifier [Axis]: Consilio Midco Limited, One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			500			500
Investments, at fair value, ending balance		888	[2],[10],[25],[28]				888	[2],[10],[25],[28]		500	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: Consilio Midco Limited, One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			222			222
Investments, at fair value, ending balance		484	[2],[10],[25],[28],[32]				484	[2],[10],[25],[28],[32]		222	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: Consilio Midco Limited, One stop 9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30]			168			168
Investments, at fair value, ending balance		214	[2],[10],[25],[28],[32]				214	[2],[10],[25],[28],[32]		168	[1],[5],[8],[30]
Investment, Identifier [Axis]: Consor Intermediate II, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			4,050			4,050
Investments, at fair value, ending balance		4,751	[2],[10],[18]				4,751	[2],[10],[18]		4,050	[1],[5],[15]
Investment, Identifier [Axis]: Consor Intermediate II, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Consor Intermediate II, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Corsair Blade IV S.A R.L., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14],[24],[25]	3,612					3,612
Investment, Identifier [Axis]: Corsair Blade IV S.A R.L., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14],[24],[25],[32]	841					841
Investment, Identifier [Axis]: Coupa Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			31,960			31,960
Investments, at fair value, ending balance		31,799	[2],[10]				31,799	[2],[10]		31,960	[1],[5],[9]
Investment, Identifier [Axis]: Coupa Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Coupa Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Covercraft Parent III, Inc., Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			6,621			6,621
Investments, at fair value, ending balance		6,248	[2],[10]				6,248	[2],[10]		6,621	[1],[5],[16]
Investment, Identifier [Axis]: Covercraft Parent III, Inc., Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,339			1,339
Investments, at fair value, ending balance		1,264	[2],[10]				1,264	[2],[10]		1,339	[1],[5]
Investment, Identifier [Axis]: Covercraft Parent III, Inc., Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			54			54
Investments, at fair value, ending balance		170	[2],[10]				170	[2],[10]		54	[1],[5]
Investment, Identifier [Axis]: Creek Parent, Inc., LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	3,572					3,572
Investment, Identifier [Axis]: Creek Parent, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	56,829					56,829
Investment, Identifier [Axis]: Creek Parent, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: Crewline Buyer, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			5,403			5,403
Investments, at fair value, ending balance		10,857	[2],[10]				10,857	[2],[10]		5,403	[1],[5],[9]
Investment, Identifier [Axis]: Crewline Buyer, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Critical Start, Inc., Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			175			175
Investments, at fair value, ending balance		197	[2],[10]				197	[2],[10]		175	[1],[5]
Investment, Identifier [Axis]: Critical Start, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			5,201			5,201
Investments, at fair value, ending balance		5,298	[2],[10],[14]				5,298	[2],[10],[14]		5,201	[1],[5],[9],[13]
Investment, Identifier [Axis]: Critical Start, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			2,388			2,388
Investments, at fair value, ending balance		2,433	[2],[10],[14]				2,433	[2],[10],[14]		2,388	[1],[5],[9],[13]
Investment, Identifier [Axis]: Critical Start, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(2)			(2)
Investments, at fair value, ending balance		(2)	[2],[10],[12]				(2)	[2],[10],[12]		(2)	[1],[5],[11]
Investment, Identifier [Axis]: Crow River Buyer, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			6,032			6,032
Investments, at fair value, ending balance		6,032	[2],[10]				6,032	[2],[10]		6,032	[1],[5],[9]
Investment, Identifier [Axis]: Crow River Buyer, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			26			26
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		26	[1],[5]
Investment, Identifier [Axis]: Crow River Buyer, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	8,700					8,700
Investment, Identifier [Axis]: Crunch Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			56,836			56,836
Investments, at fair value, ending balance		56,978	[2],[18]				56,978	[2],[18]		56,836	[1],[5]
Investment, Identifier [Axis]: Crunch Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(39)			(39)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(39)	[1],[5],[11]
Investment, Identifier [Axis]: Cycle Gear, Inc., LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			183			183
Investments, at fair value, ending balance		275	[2],[10]				275	[2],[10]		183	[1],[5]
Investment, Identifier [Axis]: Cycle Gear, Inc., One stop
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[17]			45,133			45,133
Investments, at fair value, ending balance		46,529	[2],[10]				46,529	[2],[10]		45,133	[1],[5],[6],[17]
Investment, Identifier [Axis]: Cycle Gear, Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			150			150
Investments, at fair value, ending balance		150	[2],[10]				150	[2],[10]		150	[1],[5]
Investment, Identifier [Axis]: Cynet Security Ltd., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[39]			1,008			1,008
Investments, at fair value, ending balance		1,039	[2],[10],[25],[40]				1,039	[2],[10],[25],[40]		1,008	[1],[5],[8],[39]
Investment, Identifier [Axis]: DCA Investment Holding, LLC, Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1]			0			0
Investments, at fair value, ending balance		0	[2]				0	[2]		0	[1]
Investment, Identifier [Axis]: DCA Investment Holding, LLC, Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[26]			783			783
Investments, at fair value, ending balance		593	[2],[22],[27]				593	[2],[22],[27]		783	[1],[26]
Investment, Identifier [Axis]: DISA Holdings Corp., One stop
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			691			691
Investments, at fair value, ending balance		687	[2],[10]				687	[2],[10]		691	[1],[5]
Investment, Identifier [Axis]: DISA Holdings Corp., Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			5,242			5,242
Investments, at fair value, ending balance		5,215	[2],[10]				5,215	[2],[10]		5,242	[1],[5],[9]
Investment, Identifier [Axis]: DISA Holdings Corp., Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			808			808
Investments, at fair value, ending balance		803	[2],[10]				803	[2],[10]		808	[1],[5],[9]
Investment, Identifier [Axis]: DISA Holdings Corp., Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			611			611
Investments, at fair value, ending balance		608	[2],[10]				608	[2],[10]		611	[1],[5]
Investment, Identifier [Axis]: DISA Holdings Corp., Senior secured 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			70			70
Investments, at fair value, ending balance		590	[2],[10]				590	[2],[10]		70	[1],[5]
Investment, Identifier [Axis]: DISA Holdings Corp., Senior secured 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		34	[2],[10]				34	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: DISA Holdings Corp., Subordinated debt
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			104			104
Investments, at fair value, ending balance		104	[2],[10],[14]				104	[2],[10],[14]		104	[1],[5],[13]
Investment, Identifier [Axis]: DP Flores Holdings, LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			137			137
Investments, at fair value, ending balance		156	[2],[10]				156	[2],[10]		137	[1],[5]
Investment, Identifier [Axis]: Datix Bidco Limited and RL Datix Holdings, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30]			764			764
Investments, at fair value, ending balance		771	[2],[10],[25],[28]				771	[2],[10],[25],[28]		764	[1],[5],[8],[30]
Investment, Identifier [Axis]: Datix Bidco Limited and RL Datix Holdings, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			473			473
Investments, at fair value, ending balance		462	[2],[10],[25],[28],[32]				462	[2],[10],[25],[28],[32]		473	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: Datix Bidco Limited and RL Datix Holdings, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11],[30]			(2)			(2)
Investments, at fair value, ending balance		0	[2],[10],[12],[25],[28]				0	[2],[10],[12],[25],[28]		(2)	[1],[5],[8],[11],[30]
Investment, Identifier [Axis]: Datix Bidco Limited and RL Datix Holdings, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11],[30]			(1)			(1)
Investments, at fair value, ending balance		0	[2],[10],[12],[25],[28]				0	[2],[10],[12],[25],[28]		(1)	[1],[5],[8],[11],[30]
Investment, Identifier [Axis]: Datix Bidco Limited and RL Datix Holdings, Inc., Senior secured
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30]			0			0
Investments, at fair value, ending balance	[1],[5],[8],[30]									0
Investment, Identifier [Axis]: Davidson Hotel Company, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			6,716			6,716
Investments, at fair value, ending balance	[1],[5],[16]									6,716
Investment, Identifier [Axis]: Davidson Hotel Company, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,160			1,160
Investments, at fair value, ending balance	[1],[5]									1,160
Investment, Identifier [Axis]: Davidson Hotel Company, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance	[1],[5]									0
Investment, Identifier [Axis]: Daxko Acquisition Corporation, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15],[19]			39,458			39,458
Investments, at fair value, ending balance		39,255	[2],[18],[20]				39,255	[2],[18],[20]		39,458	[1],[5],[15],[19]
Investment, Identifier [Axis]: Daxko Acquisition Corporation, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			3,328			3,328
Investments, at fair value, ending balance		3,310	[2],[10],[18]				3,310	[2],[10],[18]		3,328	[1],[5],[16]
Investment, Identifier [Axis]: Daxko Acquisition Corporation, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			199			199
Investments, at fair value, ending balance		198	[2],[10]				198	[2],[10]		199	[1],[5]
Investment, Identifier [Axis]: Daxko Acquisition Corporation, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			64			64
Investments, at fair value, ending balance		133	[2],[10]				133	[2],[10]		64	[1],[5]
Investment, Identifier [Axis]: Daxko Acquisition Corporation, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Delinea Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[19]			22,609			22,609
Investments, at fair value, ending balance		22,492	[2],[18],[20]				22,492	[2],[18],[20]		22,609	[1],[5],[19]
Investment, Identifier [Axis]: Delinea Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[17],[19]			13,127			13,127
Investments, at fair value, ending balance		13,058	[2],[18],[20]				13,058	[2],[18],[20]		13,127	[1],[17],[19]
Investment, Identifier [Axis]: Delinea Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		11,443	[2],[10]				11,443	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Delinea Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[9]			11,500			11,500
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		11,500	[1],[9]
Investment, Identifier [Axis]: Denali Bidco Limited, LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30]			824			824
Investments, at fair value, ending balance		902	[2],[10],[25],[28]				902	[2],[10],[25],[28]		824	[1],[5],[8],[30]
Investment, Identifier [Axis]: Denali Bidco Limited, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30],[31]			7,903			7,903
Investments, at fair value, ending balance		7,595	[2],[10],[25],[28],[32]				7,595	[2],[10],[25],[28],[32]		7,903	[1],[5],[8],[9],[30],[31]
Investment, Identifier [Axis]: Denali Bidco Limited, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			2,669			2,669
Investments, at fair value, ending balance		2,581	[2],[10],[25],[28],[32]				2,581	[2],[10],[25],[28],[32]		2,669	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: Denali Bidco Limited, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30],[31]			1,906			1,906
Investments, at fair value, ending balance		1,843	[2],[10],[25],[28],[32]				1,843	[2],[10],[25],[28],[32]		1,906	[1],[5],[8],[9],[30],[31]
Investment, Identifier [Axis]: Denali Bidco Limited, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30],[31]			741			741
Investments, at fair value, ending balance		720	[2],[10],[25],[28],[32]				720	[2],[10],[25],[28],[32]		741	[1],[5],[8],[9],[30],[31]
Investment, Identifier [Axis]: Denali Bidco Limited, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11],[30],[31]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12],[25],[28],[32]				0	[2],[10],[12],[25],[28],[32]		0	[1],[5],[8],[11],[30],[31]
Investment, Identifier [Axis]: Denali Midco 2, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			44,627			44,627
Investments, at fair value, ending balance		38,258	[2],[18]				38,258	[2],[18]		44,627	[1],[5],[15]
Investment, Identifier [Axis]: Denali Midco 2, LLC, One stop 10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,254			1,254
Investments, at fair value, ending balance		1,075	[2],[10]				1,075	[2],[10]		1,254	[1],[5],[9]
Investment, Identifier [Axis]: Denali Midco 2, LLC, One stop 11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,034			1,034
Investments, at fair value, ending balance		887	[2],[10]				887	[2],[10]		1,034	[1],[5],[9]
Investment, Identifier [Axis]: Denali Midco 2, LLC, One stop 12
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			469			469
Investments, at fair value, ending balance		863	[2],[10]				863	[2],[10]		469	[1],[5]
Investment, Identifier [Axis]: Denali Midco 2, LLC, One stop 13
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			406			406
Investments, at fair value, ending balance		403	[2],[10]				403	[2],[10]		406	[1],[5]
Investment, Identifier [Axis]: Denali Midco 2, LLC, One stop 14
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			394			394
Investments, at fair value, ending balance		348	[2],[10]				348	[2],[10]		394	[1],[5]
Investment, Identifier [Axis]: Denali Midco 2, LLC, One stop 15
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			343			343
Investments, at fair value, ending balance		294	[2],[10]				294	[2],[10]		343	[1],[5]
Investment, Identifier [Axis]: Denali Midco 2, LLC, One stop 16
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			201			201
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		201	[1],[5]
Investment, Identifier [Axis]: Denali Midco 2, LLC, One stop 17
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			200			200
Investments, at fair value, ending balance		173	[2],[10]				173	[2],[10]		200	[1],[5]
Investment, Identifier [Axis]: Denali Midco 2, LLC, One stop 18
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			101			101
Investments, at fair value, ending balance		87	[2],[10]				87	[2],[10]		101	[1],[5]
Investment, Identifier [Axis]: Denali Midco 2, LLC, One stop 19
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Denali Midco 2, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[16]			10,401			10,401
Investments, at fair value, ending balance		8,917	[2],[10]				8,917	[2],[10]		10,401	[1],[5],[9],[16]
Investment, Identifier [Axis]: Denali Midco 2, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			3,113			3,113
Investments, at fair value, ending balance		2,668	[2],[10]				2,668	[2],[10]		3,113	[1],[5],[16]
Investment, Identifier [Axis]: Denali Midco 2, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,891			1,891
Investments, at fair value, ending balance		1,621	[2],[10]				1,621	[2],[10]		1,891	[1],[5],[9]
Investment, Identifier [Axis]: Denali Midco 2, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,797			1,797
Investments, at fair value, ending balance		1,540	[2],[10]				1,540	[2],[10]		1,797	[1],[5],[9]
Investment, Identifier [Axis]: Denali Midco 2, LLC, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,568			1,568
Investments, at fair value, ending balance		1,344	[2],[10]				1,344	[2],[10]		1,568	[1],[5],[9]
Investment, Identifier [Axis]: Denali Midco 2, LLC, One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,508			1,508
Investments, at fair value, ending balance		1,293	[2],[10]				1,293	[2],[10]		1,508	[1],[5],[9]
Investment, Identifier [Axis]: Denali Midco 2, LLC, One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,292			1,292
Investments, at fair value, ending balance		1,108	[2],[10]				1,108	[2],[10]		1,292	[1],[5],[9]
Investment, Identifier [Axis]: Denali Midco 2, LLC, One stop 9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,254			1,254
Investments, at fair value, ending balance		1,075	[2],[10]				1,075	[2],[10]		1,254	[1],[5],[9]
Investment, Identifier [Axis]: Denali Midco 2, LLC, Second lien
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14]	10,846					10,846
Investment, Identifier [Axis]: Diligent Corporation, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			8,985			8,985
Investments, at fair value, ending balance		8,985	[2],[10]				8,985	[2],[10]		8,985	[1],[5],[9]
Investment, Identifier [Axis]: Diligent Corporation, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,541			1,541
Investments, at fair value, ending balance		1,541	[2],[10]				1,541	[2],[10]		1,541	[1],[5]
Investment, Identifier [Axis]: Diligent Corporation, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Diligent Corporation, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Diligent Corporation, Preferred stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			31,231			31,231
Investments, at fair value, ending balance	[1],[5],[26]									31,231
Investment, Identifier [Axis]: Diligent Corporation, Preferred stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,543			2,543
Investments, at fair value, ending balance	[1],[5]									2,543
Investment, Identifier [Axis]: Diligent Corporation, Preferred stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[27]	33,359					33,359
Investment, Identifier [Axis]: Diligent Corporation, Preferred stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	2,211					2,211
Investment, Identifier [Axis]: Disco Parent, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			6,246			6,246
Investments, at fair value, ending balance		9,240	[2],[10]				9,240	[2],[10]		6,246	[1],[5],[9]
Investment, Identifier [Axis]: Disco Parent, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Dollfus Mieg Company, Inc, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30]			925			925
Investments, at fair value, ending balance	[1],[5],[8],[9],[30]									925
Investment, Identifier [Axis]: Dollfus Mieg Company, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30]			2,112			2,112
Investments, at fair value, ending balance		2,254	[2],[10],[25],[28]				2,254	[2],[10],[25],[28]		2,112	[1],[5],[8],[9],[30]
Investment, Identifier [Axis]: Dollfus Mieg Company, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30]			1,052			1,052
Investments, at fair value, ending balance		1,123	[2],[10],[25],[28]				1,123	[2],[10],[25],[28]		1,052	[1],[5],[8],[9],[30]
Investment, Identifier [Axis]: Dollfus Mieg Company, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[28]	986					986
Investment, Identifier [Axis]: Doxa Insurance Holdings LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,739			1,739
Investments, at fair value, ending balance		1,730	[2],[10]				1,730	[2],[10]		1,739	[1],[5],[9]
Investment, Identifier [Axis]: Doxa Insurance Holdings LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		1,590	[2],[10]				1,590	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Doxa Insurance Holdings LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,438			1,438
Investments, at fair value, ending balance		12	[2],[10]				12	[2],[10]		1,438	[1],[5]
Investment, Identifier [Axis]: Doxa Insurance Holdings LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Dragon UK Bidco Limited, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30],[31]			22,807			22,807
Investments, at fair value, ending balance	[1],[5],[8],[9],[30],[31]									22,807
Investment, Identifier [Axis]: Dragon UK Bidco Limited, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			4,447			4,447
Investments, at fair value, ending balance	[1],[5],[8],[30],[31]									4,447
Investment, Identifier [Axis]: Dragon UK Bidco Limited, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11],[30],[31]			(19)			(19)
Investments, at fair value, ending balance	[1],[5],[8],[11],[30],[31]									(19)
Investment, Identifier [Axis]: Dwyer Instruments, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			5,827			5,827
Investments, at fair value, ending balance		49,100	[2],[10],[25],[32]				49,100	[2],[10],[25],[32]		5,827	[1],[5],[9]
Investment, Identifier [Axis]: Dwyer Instruments, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		1,493	[2],[10]				1,493	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Dwyer Instruments, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,477			1,477
Investments, at fair value, ending balance		0	[2],[10],[12],[25],[32]				0	[2],[10],[12],[25],[32]		1,477	[1],[5]
Investment, Identifier [Axis]: Dwyer Instruments, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			472			472
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		472	[1],[5],[9]
Investment, Identifier [Axis]: Dwyer Instruments, Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		5,798	[2],[10]				5,798	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Dwyer Instruments, Inc., One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	174					174
Investment, Identifier [Axis]: Dwyer Instruments, Inc., One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	1,470					1,470
Investment, Identifier [Axis]: Dwyer Instruments, Inc., One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	470					470
Investment, Identifier [Axis]: Dwyer Instruments, Inc., One stop 9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	551					551
Investment, Identifier [Axis]: EMS LINQ, LLC, LP Interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			748			748
Investments, at fair value, ending balance	[1],[5]									748
Investment, Identifier [Axis]: EMS LINQ, LLC, LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	486					486
Investment, Identifier [Axis]: EMS LINQ, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[19]			13,835			13,835
Investments, at fair value, ending balance		13,835	[2],[10],[20]				13,835	[2],[10],[20]		13,835	[1],[5],[19]
Investment, Identifier [Axis]: EMS LINQ, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			96			96
Investments, at fair value, ending balance		150	[2],[10]				150	[2],[10]		96	[1],[5]
Investment, Identifier [Axis]: EOS Fitness Opco Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15],[17]			10,981			10,981
Investments, at fair value, ending balance		11,011	[2],[10],[18]				11,011	[2],[10],[18]		10,981	[1],[5],[15],[17]
Investment, Identifier [Axis]: EOS Fitness Opco Holdings, LLC, One stop 10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(1)			(1)
Investments, at fair value, ending balance		849	[2],[10]				849	[2],[10]		(1)	[1],[5],[11]
Investment, Identifier [Axis]: EOS Fitness Opco Holdings, LLC, One stop 11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(106)			(106)
Investments, at fair value, ending balance		601	[2],[10]				601	[2],[10]		(106)	[1],[5],[11]
Investment, Identifier [Axis]: EOS Fitness Opco Holdings, LLC, One stop 12
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	0					0
Investment, Identifier [Axis]: EOS Fitness Opco Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,809			2,809
Investments, at fair value, ending balance		7,482	[2],[10]				7,482	[2],[10]		2,809	[1],[5]
Investment, Identifier [Axis]: EOS Fitness Opco Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,788			1,788
Investments, at fair value, ending balance		2,816	[2],[10]				2,816	[2],[10]		1,788	[1],[5]
Investment, Identifier [Axis]: EOS Fitness Opco Holdings, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,761			1,761
Investments, at fair value, ending balance		1,792	[2],[10]				1,792	[2],[10]		1,761	[1],[5],[9]
Investment, Identifier [Axis]: EOS Fitness Opco Holdings, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,475			1,475
Investments, at fair value, ending balance		1,765	[2],[10]				1,765	[2],[10]		1,475	[1],[5],[9]
Investment, Identifier [Axis]: EOS Fitness Opco Holdings, LLC, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,226			1,226
Investments, at fair value, ending balance		1,479	[2],[10]				1,479	[2],[10]		1,226	[1],[5],[9]
Investment, Identifier [Axis]: EOS Fitness Opco Holdings, LLC, One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,084			1,084
Investments, at fair value, ending balance		1,229	[2],[10]				1,229	[2],[10]		1,084	[1],[5]
Investment, Identifier [Axis]: EOS Fitness Opco Holdings, LLC, One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,061			1,061
Investments, at fair value, ending balance		1,088	[2],[10]				1,088	[2],[10]		1,061	[1],[5]
Investment, Identifier [Axis]: EOS Fitness Opco Holdings, LLC, One stop 9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			446			446
Investments, at fair value, ending balance		1,063	[2],[10]				1,063	[2],[10]		446	[1],[5]
Investment, Identifier [Axis]: ERC Topco Holdings, LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	4,841					4,841
Investment, Identifier [Axis]: ERC Topco Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13],[16],[21]			16,178			16,178
Investments, at fair value, ending balance		6,667	[2],[10]				6,667	[2],[10]		16,178	[1],[5],[9],[13],[16],[21]
Investment, Identifier [Axis]: ERC Topco Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[21]			112			112
Investments, at fair value, ending balance		1,069	[2],[10]				1,069	[2],[10]		112	[1],[5],[13],[21]
Investment, Identifier [Axis]: ERC Topco Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13],[16],[21]			275			275
Investments, at fair value, ending balance		76	[2],[10]				76	[2],[10]		275	[1],[5],[9],[13],[16],[21]
Investment, Identifier [Axis]: ERC Topco Holdings, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[21]			2			2
Investments, at fair value, ending balance	[1],[5],[13],[21]									2
Investment, Identifier [Axis]: ESN Venture Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[6],[15],[16]			5,409			5,409
Investments, at fair value, ending balance		5,381	[2],[10],[18]				5,381	[2],[10],[18]		5,409	[1],[6],[15],[16]
Investment, Identifier [Axis]: ESN Venture Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			924			924
Investments, at fair value, ending balance		1,593	[2],[10]				1,593	[2],[10]		924	[1],[5]
Investment, Identifier [Axis]: ESN Venture Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			817			817
Investments, at fair value, ending balance		919	[2],[10]				919	[2],[10]		817	[1],[5]
Investment, Identifier [Axis]: ESN Venture Holdings, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			375			375
Investments, at fair value, ending balance		813	[2],[10]				813	[2],[10]		375	[1],[5]
Investment, Identifier [Axis]: ESN Venture Holdings, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			265			265
Investments, at fair value, ending balance		440	[2],[10]				440	[2],[10]		265	[1],[5]
Investment, Identifier [Axis]: ESN Venture Holdings, LLC, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			209			209
Investments, at fair value, ending balance		386	[2],[10]				386	[2],[10]		209	[1],[5]
Investment, Identifier [Axis]: ESN Venture Holdings, LLC, One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		374	[2],[10]				374	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: ESN Venture Holdings, LLC, One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	209					209
Investment, Identifier [Axis]: ESN Venture Holdings, LLC, One stop 9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	182					182
Investment, Identifier [Axis]: ESO Solution, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[19]			11,360			11,360
Investments, at fair value, ending balance		11,360	[2],[10],[20]				11,360	[2],[10],[20]		11,360	[1],[5],[9],[19]
Investment, Identifier [Axis]: ESO Solution, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			3,803			3,803
Investments, at fair value, ending balance		3,803	[2],[10]				3,803	[2],[10]		3,803	[1],[5]
Investment, Identifier [Axis]: ESO Solution, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			78			78
Investments, at fair value, ending balance		108	[2],[10]				108	[2],[10]		78	[1],[5]
Investment, Identifier [Axis]: EWC Growth Partners LLC, LLC interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: EWC Growth Partners LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			939			939
Investments, at fair value, ending balance		1,037	[2],[10]				1,037	[2],[10]		939	[1],[5],[9]
Investment, Identifier [Axis]: EWC Growth Partners LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			1,103			1,103
Investments, at fair value, ending balance		883	[2],[10]				883	[2],[10]		1,103	[1],[5],[16]
Investment, Identifier [Axis]: EWC Growth Partners LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			36			36
Investments, at fair value, ending balance		98	[2],[10]				98	[2],[10]		36	[1],[5]
Investment, Identifier [Axis]: EWC Growth Partners LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			105			105
Investments, at fair value, ending balance		36	[2],[10]				36	[2],[10]		105	[1],[5]
Investment, Identifier [Axis]: Eagle Family Foods Group, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			13,298			13,298
Investments, at fair value, ending balance		12,946	[2],[10]				12,946	[2],[10]		13,298	[1],[5]
Investment, Identifier [Axis]: Eagle Family Foods Group, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			186			186
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		186	[1],[5]
Investment, Identifier [Axis]: Eclipse Buyer, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			14,140			14,140
Investments, at fair value, ending balance		14,283	[2],[10]				14,283	[2],[10]		14,140	[1],[5]
Investment, Identifier [Axis]: Eclipse Buyer, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(18)			(18)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(18)	[1],[5],[11]
Investment, Identifier [Axis]: Eclipse Buyer, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(12)			(12)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(12)	[1],[5],[11]
Investment, Identifier [Axis]: Eclipse Buyer, Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			1,595			1,595
Investments, at fair value, ending balance		1,743	[2],[10],[27]				1,743	[2],[10],[27]		1,595	[1],[5],[26]
Investment, Identifier [Axis]: Einstein Parent, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	8,881					8,881
Investment, Identifier [Axis]: Einstein Parent, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(19)					(19)
Investment, Identifier [Axis]: Eliassen Group, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			2,084			2,084
Investments, at fair value, ending balance		2,094	[2],[10]				2,094	[2],[10]		2,084	[1],[5],[9]
Investment, Identifier [Axis]: Eliassen Group, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			140			140
Investments, at fair value, ending balance		141	[2],[10]				141	[2],[10]		140	[1],[5]
Investment, Identifier [Axis]: Elite Dental Partners LLC
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance				11,696			11,696		13,396	13,396
Gross additions							1,761			5,845
Gross reductions							(1,669)			(3,013)
Net change in unrealized appreciation (depreciation)							(1,110)			(4,532)
Net realized gain (loss)							0			0
Investments, at fair value, ending balance		10,678					10,678			11,696
Interest, dividend and fee income							96			180
Investment, Identifier [Axis]: Elite Dental Partners LLC, LLC interest 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1]			0			0
Investments, at fair value, ending balance		0	[2]				0	[2]		0	[1]
Investment, Identifier [Axis]: Elite Dental Partners LLC, LLC interest 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1]			0			0
Investments, at fair value, ending balance		0	[2]				0	[2]		0	[1]
Investment, Identifier [Axis]: Elite Dental Partners LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1]			0			0
Investments, at fair value, ending balance		0	[2]				0	[2]		0	[1]
Investment, Identifier [Axis]: Elite Dental Partners LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[21]			5,505			5,505
Investments, at fair value, ending balance		5,081	[2],[10],[14],[22]				5,081	[2],[10],[14],[22]		5,505	[1],[5],[13],[21]
Investment, Identifier [Axis]: Elite Dental Partners LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[21]			4,393			4,393
Investments, at fair value, ending balance		3,708	[2],[10],[14],[22]				3,708	[2],[10],[14],[22]		4,393	[1],[5],[13],[21]
Investment, Identifier [Axis]: Elite Dental Partners LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			1,798			1,798
Investments, at fair value, ending balance		1,889	[2],[10],[14]				1,889	[2],[10],[14]		1,798	[1],[5],[13]
Investment, Identifier [Axis]: Elite Sportswear, L.P., Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			9,951			9,951
Investments, at fair value, ending balance		9,950	[2],[10],[14]				9,950	[2],[10],[14]		9,951	[1],[5],[13]
Investment, Identifier [Axis]: Elite Sportswear, L.P., Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			3,999			3,999
Investments, at fair value, ending balance		3,998	[2],[10],[14]				3,998	[2],[10],[14]		3,999	[1],[5],[13]
Investment, Identifier [Axis]: Elite Sportswear, L.P., Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			2,058			2,058
Investments, at fair value, ending balance		2,058	[2],[10],[14]				2,058	[2],[10],[14]		2,058	[1],[5],[13]
Investment, Identifier [Axis]: Elite Sportswear, L.P., Senior secured 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[13]			683			683
Investments, at fair value, ending balance		683	[2],[10],[14]				683	[2],[10],[14]		683	[1],[5],[6],[13]
Investment, Identifier [Axis]: Elite Sportswear, L.P., Senior secured 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			312			312
Investments, at fair value, ending balance		312	[2],[10],[14]				312	[2],[10],[14]		312	[1],[5],[13]
Investment, Identifier [Axis]: Elite Sportswear, L.P., Senior secured 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[13]			298			298
Investments, at fair value, ending balance		299	[2],[10],[14]				299	[2],[10],[14]		298	[1],[5],[6],[13]
Investment, Identifier [Axis]: Elite Sportswear, L.P., Senior secured 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			115			115
Investments, at fair value, ending balance		600	[2],[10],[14]				600	[2],[10],[14]		115	[1],[5],[13]
Investment, Identifier [Axis]: Elite Sportswear, L.P., Senior secured 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			4			4
Investments, at fair value, ending balance		21	[2],[10],[14]				21	[2],[10],[14]		4	[1],[5],[13]
Investment, Identifier [Axis]: Emerge Intermediate, Inc., LLC units 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			435			435
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		435	[1],[5]
Investment, Identifier [Axis]: Emerge Intermediate, Inc., LLC units 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			108			108
Investments, at fair value, ending balance		97	[2],[10]				97	[2],[10]		108	[1],[5]
Investment, Identifier [Axis]: Emerge Intermediate, Inc., LLC units 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Empyrean Solutions, LLC., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	9,283					9,283
Investment, Identifier [Axis]: Empyrean Solutions, LLC., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: Empyrean Solutions, LLC., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: Enboarder, Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[41]			567			567
Investments, at fair value, ending balance		566	[2],[10],[25],[42]				566	[2],[10],[25],[42]		567	[1],[5],[8],[41]
Investment, Identifier [Axis]: Encore Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			4,575			4,575
Investments, at fair value, ending balance	[1],[5]									4,575
Investment, Identifier [Axis]: Encore Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			910			910
Investments, at fair value, ending balance	[1],[5],[9]									910
Investment, Identifier [Axis]: Encore Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,170			1,170
Investments, at fair value, ending balance	[1],[5]									1,170
Investment, Identifier [Axis]: Encorevet Group LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			15,047			15,047
Investments, at fair value, ending balance		15,436	[2],[10]				15,436	[2],[10]		15,047	[1],[5]
Investment, Identifier [Axis]: Encorevet Group LLC, One stop 10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			804			804
Investments, at fair value, ending balance		825	[2],[10]				825	[2],[10]		804	[1],[5]
Investment, Identifier [Axis]: Encorevet Group LLC, One stop 11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			408			408
Investments, at fair value, ending balance		419	[2],[10]				419	[2],[10]		408	[1],[5]
Investment, Identifier [Axis]: Encorevet Group LLC, One stop 12
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			345			345
Investments, at fair value, ending balance		354	[2],[10]				354	[2],[10]		345	[1],[5]
Investment, Identifier [Axis]: Encorevet Group LLC, One stop 13
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			169			169
Investments, at fair value, ending balance		173	[2],[10]				173	[2],[10]		169	[1],[5]
Investment, Identifier [Axis]: Encorevet Group LLC, One stop 14
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			162			162
Investments, at fair value, ending balance		167	[2],[10]				167	[2],[10]		162	[1],[5]
Investment, Identifier [Axis]: Encorevet Group LLC, One stop 15
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			90			90
Investments, at fair value, ending balance		157	[2],[10]				157	[2],[10]		90	[1],[5]
Investment, Identifier [Axis]: Encorevet Group LLC, One stop 16
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			89			89
Investments, at fair value, ending balance		98	[2],[10],[14]				98	[2],[10],[14]		89	[1],[5],[13]
Investment, Identifier [Axis]: Encorevet Group LLC, One stop 17
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			5			5
Investments, at fair value, ending balance		94	[2],[10]				94	[2],[10]		5	[1],[5]
Investment, Identifier [Axis]: Encorevet Group LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			7,852			7,852
Investments, at fair value, ending balance		8,056	[2],[10]				8,056	[2],[10]		7,852	[1],[5]
Investment, Identifier [Axis]: Encorevet Group LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			4,061			4,061
Investments, at fair value, ending balance		4,167	[2],[10]				4,167	[2],[10]		4,061	[1],[5],[15]
Investment, Identifier [Axis]: Encorevet Group LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,065			2,065
Investments, at fair value, ending balance		2,119	[2],[10]				2,119	[2],[10]		2,065	[1],[5]
Investment, Identifier [Axis]: Encorevet Group LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			1,823			1,823
Investments, at fair value, ending balance		1,870	[2],[10]				1,870	[2],[10]		1,823	[1],[5],[15]
Investment, Identifier [Axis]: Encorevet Group LLC, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			1,135			1,135
Investments, at fair value, ending balance		1,165	[2],[10]				1,165	[2],[10]		1,135	[1],[5],[15]
Investment, Identifier [Axis]: Encorevet Group LLC, One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			943			943
Investments, at fair value, ending balance		967	[2],[10]				967	[2],[10]		943	[1],[5]
Investment, Identifier [Axis]: Encorevet Group LLC, One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			928			928
Investments, at fair value, ending balance		952	[2],[10]				952	[2],[10]		928	[1],[5]
Investment, Identifier [Axis]: Encorevet Group LLC, One stop 9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			888			888
Investments, at fair value, ending balance		912	[2],[10]				912	[2],[10]		888	[1],[5]
Investment, Identifier [Axis]: Encorevet Group LLC, Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			203			203
Investments, at fair value, ending balance		147	[2],[10]				147	[2],[10]		203	[1],[5]
Investment, Identifier [Axis]: Energy Worldnet, LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	52					52
Investment, Identifier [Axis]: Entomo Brands Acquisitions, Inc., Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			4,389			4,389
Investments, at fair value, ending balance		4,323	[2],[10]				4,323	[2],[10]		4,389	[1],[5],[9]
Investment, Identifier [Axis]: Entomo Brands Acquisitions, Inc., Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			30			30
Investments, at fair value, ending balance		1,251	[2],[10]				1,251	[2],[10]		30	[1],[5]
Investment, Identifier [Axis]: Entomo Brands Acquisitions, Inc., Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,263			1,263
Investments, at fair value, ending balance		28	[2],[10]				28	[2],[10]		1,263	[1],[5]
Investment, Identifier [Axis]: Envernus, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			5,131			5,131
Investments, at fair value, ending balance		5,265	[2],[10]				5,265	[2],[10]		5,131	[1],[5],[9]
Investment, Identifier [Axis]: Envernus, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			5			5
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		5	[1],[5]
Investment, Identifier [Axis]: Envernus, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Espresso Bidco, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	17,827					17,827
Investment, Identifier [Axis]: Espresso Bidco, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(75)					(75)
Investment, Identifier [Axis]: Espresso Bidco, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(33)					(33)
Investment, Identifier [Axis]: Essential Services Holdings Corporation, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			11,399			11,399
Investments, at fair value, ending balance		11,399	[2],[10]				11,399	[2],[10]		11,399	[1],[5]
Investment, Identifier [Axis]: Essential Services Holdings Corporation, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(14)			(14)
Investments, at fair value, ending balance		215	[2],[10]				215	[2],[10]		(14)	[1],[5],[11]
Investment, Identifier [Axis]: Essential Services Holdings Corporation, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(23)			(23)
Investments, at fair value, ending balance		(23)	[2],[10],[12]				(23)	[2],[10],[12]		(23)	[1],[5],[11]
Investment, Identifier [Axis]: Evergreen IX Borrower 2023, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			4,869			4,869
Investments, at fair value, ending balance		4,894	[2],[10]				4,894	[2],[10]		4,869	[1],[5],[9]
Investment, Identifier [Axis]: Evergreen IX Borrower 2023, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			4,438			4,438
Investments, at fair value, ending balance		4,461	[2],[10]				4,461	[2],[10]		4,438	[1],[5]
Investment, Identifier [Axis]: Evergreen IX Borrower 2023, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(4)			(4)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(4)	[1],[5],[11]
Investment, Identifier [Axis]: Excelitas Technologies Corp., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(84)			(84)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(84)	[1],[5],[11]
Investment, Identifier [Axis]: Excelitas Technologies Corp., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			9,920			9,920
Investments, at fair value, ending balance		10,022	[2],[10]				10,022	[2],[10]		9,920	[1],[5],[9]
Investment, Identifier [Axis]: Excelitas Technologies Corp., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[31]			1,901			1,901
Investments, at fair value, ending balance		1,855	[2],[10],[25],[32]				1,855	[2],[10],[25],[32]		1,901	[1],[5],[8],[9],[31]
Investment, Identifier [Axis]: Excelitas Technologies Corp., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(4)			(4)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(4)	[1],[5],[11]
Investment, Identifier [Axis]: Excelitas Technologies Corp., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(3)			(3)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(3)	[1],[5],[11]
Investment, Identifier [Axis]: FPG Intermediate Holdco, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			10,992			10,992
Investments, at fair value, ending balance		12,971	[2],[10],[14],[22]				12,971	[2],[10],[14],[22]		10,992	[1],[5],[13]
Investment, Identifier [Axis]: FPG Intermediate Holdco, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			6,084			6,084
Investments, at fair value, ending balance		873	[2],[10],[14]				873	[2],[10],[14]		6,084	[1],[5],[13]
Investment, Identifier [Axis]: FPG Intermediate Holdco, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			126			126
Investments, at fair value, ending balance		54	[2],[10],[14]				54	[2],[10],[14]		126	[1],[5],[13]
Investment, Identifier [Axis]: FR Vision Holdings, Inc., LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			471			471
Investments, at fair value, ending balance	[1],[5]									471
Investment, Identifier [Axis]: FR Vision Holdings, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,070			1,070
Investments, at fair value, ending balance	[1],[5],[9]									1,070
Investment, Identifier [Axis]: FR Vision Holdings, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			90			90
Investments, at fair value, ending balance	[1],[5]									90
Investment, Identifier [Axis]: FR Vision Holdings, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance	[1],[5]									0
Investment, Identifier [Axis]: FSS Buyer LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			7,666			7,666
Investments, at fair value, ending balance		7,627	[2],[10]				7,627	[2],[10]		7,666	[1],[5],[16]
Investment, Identifier [Axis]: FSS Buyer LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: FYI Optical Acquisitions, Inc. & FYI USA, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[9],[31]			11,272			11,272
Investments, at fair value, ending balance		10,597	[2],[10],[25],[29],[32]				10,597	[2],[10],[25],[29],[32]		11,272	[1],[5],[7],[8],[9],[31]
Investment, Identifier [Axis]: FYI Optical Acquisitions, Inc. & FYI USA, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[31]			4,074			4,074
Investments, at fair value, ending balance		3,830	[2],[10],[25],[29],[32]				3,830	[2],[10],[25],[29],[32]		4,074	[1],[5],[7],[8],[31]
Investment, Identifier [Axis]: FYI Optical Acquisitions, Inc. & FYI USA, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[31]			2,774			2,774
Investments, at fair value, ending balance		2,609	[2],[10],[25],[29],[32]				2,609	[2],[10],[25],[29],[32]		2,774	[1],[5],[7],[8],[31]
Investment, Identifier [Axis]: FYI Optical Acquisitions, Inc. & FYI USA, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[31]			2,642			2,642
Investments, at fair value, ending balance		2,484	[2],[10],[25],[29],[32]				2,484	[2],[10],[25],[29],[32]		2,642	[1],[5],[7],[8],[31]
Investment, Identifier [Axis]: FYI Optical Acquisitions, Inc. & FYI USA, Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[19]			1,105			1,105
Investments, at fair value, ending balance		1,105	[2],[10],[20],[25],[29]				1,105	[2],[10],[20],[25],[29]		1,105	[1],[5],[7],[8],[19]
Investment, Identifier [Axis]: FYI Optical Acquisitions, Inc. & FYI USA, Inc., One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[9]			554			554
Investments, at fair value, ending balance		554	[2],[10],[25],[29]				554	[2],[10],[25],[29]		554	[1],[5],[7],[8],[9]
Investment, Identifier [Axis]: FYI Optical Acquisitions, Inc. & FYI USA, Inc., One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[31]			481			481
Investments, at fair value, ending balance		453	[2],[10],[25],[29],[32]				453	[2],[10],[25],[29],[32]		481	[1],[5],[7],[8],[31]
Investment, Identifier [Axis]: Filevine, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[19]			8,344			8,344
Investments, at fair value, ending balance		8,451	[2],[10],[14],[20]				8,451	[2],[10],[14],[20]		8,344	[1],[5],[13],[19]
Investment, Identifier [Axis]: Filevine, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Filevine, Inc., Preferred stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			3,992			3,992
Investments, at fair value, ending balance		4,692	[2],[10]				4,692	[2],[10]		3,992	[1],[5]
Investment, Identifier [Axis]: Filevine, Inc., Preferred stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			234			234
Investments, at fair value, ending balance		275	[2],[10]				275	[2],[10]		234	[1],[5]
Investment, Identifier [Axis]: Filevine, Inc., Warrant
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			485			485
Investments, at fair value, ending balance		589	[2],[10]				589	[2],[10]		485	[1],[5]
Investment, Identifier [Axis]: Financial Information Technologies, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[15],[16]			34,626			34,626
Investments, at fair value, ending balance	[1],[5],[9],[15],[16]									34,626
Investment, Identifier [Axis]: Financial Information Technologies, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			19,894			19,894
Investments, at fair value, ending balance	[1],[5],[13]									19,894
Investment, Identifier [Axis]: Financial Information Technologies, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance	[1],[5],[11]									0
Investment, Identifier [Axis]: Financial Information Technologies, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			2,221			2,221
Investments, at fair value, ending balance	[1],[5],[9]									2,221
Investment, Identifier [Axis]: Financial Information Technologies, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance	[1],[5],[11]									0
Investment, Identifier [Axis]: Financial Information Technologies, LLC., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[18]	34,451					34,451
Investment, Identifier [Axis]: Financial Information Technologies, LLC., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14]	21,967					21,967
Investment, Identifier [Axis]: Financial Information Technologies, LLC., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	0					0
Investment, Identifier [Axis]: Financial Information Technologies, LLC., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	2,210					2,210
Investment, Identifier [Axis]: Financial Information Technologies, LLC., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: Finastra USA, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			5,393			5,393
Investments, at fair value, ending balance		5,373	[2],[10],[25],[28]				5,373	[2],[10],[25],[28]		5,393	[1],[5],[9]
Investment, Identifier [Axis]: Finastra USA, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			46			46
Investments, at fair value, ending balance		24	[2],[10],[25],[28]				24	[2],[10],[25],[28]		46	[1],[5]
Investment, Identifier [Axis]: FirstUp, Inc. Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			346			346
Investments, at fair value, ending balance	[1],[5]									346
Investment, Identifier [Axis]: FirstUp, Inc., Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	210					210
Investment, Identifier [Axis]: FirstUp, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[19]			12,863			12,863
Investments, at fair value, ending balance		12,994	[2],[10],[20]				12,994	[2],[10],[20]		12,863	[1],[5],[13],[19]
Investment, Identifier [Axis]: FirstUp, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			1,226			1,226
Investments, at fair value, ending balance		1,239	[2],[10]				1,239	[2],[10]		1,226	[1],[5],[9],[13]
Investment, Identifier [Axis]: FirstUp, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(4)			(4)
Investments, at fair value, ending balance		(2)	[2],[10],[12]				(2)	[2],[10],[12]		(4)	[1],[5],[11]
Investment, Identifier [Axis]: FirstUp, Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	27					27
Investment, Identifier [Axis]: Flash Topco, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[6],[16]			16,240			16,240
Investments, at fair value, ending balance		17,006	[2],[10]				17,006	[2],[10]		16,240	[1],[6],[16]
Investment, Identifier [Axis]: Flash Topco, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			136			136
Investments, at fair value, ending balance		3,395	[2],[10]				3,395	[2],[10]		136	[1],[5]
Investment, Identifier [Axis]: Flash Topco, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			74			74
Investments, at fair value, ending balance		140	[2],[10]				140	[2],[10]		74	[1],[5]
Investment, Identifier [Axis]: Fleet Farm Group LLC
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance				0			0
Gross additions							29,020
Gross reductions							0
Net change in unrealized appreciation (depreciation)							540
Net realized gain (loss)							0
Investments, at fair value, ending balance		29,560					29,560			0
Interest, dividend and fee income							98
Investment, Identifier [Axis]: Fleet Farm Group, LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2]	24,413					24,413
Investment, Identifier [Axis]: Fleet Farm Group, LLC, One stop
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[17],[21]			31,866			31,866
Investments, at fair value, ending balance	[1],[5],[6],[17],[21]									31,866
Investment, Identifier [Axis]: Fleet Farm Group, LLC, Senior secured
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14]	5,147					5,147
Investment, Identifier [Axis]: Fortis Solutions Group LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[15],[16],[17],[19]			50,501			50,501
Investments, at fair value, ending balance	[1],[5],[6],[15],[16],[17],[19]									50,501
Investment, Identifier [Axis]: Fortis Solutions Group LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			70			70
Investments, at fair value, ending balance	[1],[5]									70
Investment, Identifier [Axis]: Fortis Solutions Group LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			138			138
Investments, at fair value, ending balance	[1],[5]									138
Investment, Identifier [Axis]: Fortis Solutions Group LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			152			152
Investments, at fair value, ending balance	[1],[5]									152
Investment, Identifier [Axis]: Fortis Solutions Group, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	170					170
Investment, Identifier [Axis]: Fortis Solutions Group, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	141					141
Investment, Identifier [Axis]: Fortis Solutions Group, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	272					272
Investment, Identifier [Axis]: Fortis Solutions Group, LLC^, One stop
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[18],[20]	51,862					51,862
Investment, Identifier [Axis]: Franchise Brands plc, Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[26],[30],[31],[43]			118			118
Investments, at fair value, ending balance		94	[2],[10],[25],[27],[28],[32],[44]				94	[2],[10],[25],[27],[28],[32],[44]		118	[1],[5],[8],[26],[30],[31],[43]
Investment, Identifier [Axis]: Freddy's Frozen Custard LLC, LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			648			648
Investments, at fair value, ending balance		823	[2],[10]				823	[2],[10]		648	[1],[5]
Investment, Identifier [Axis]: Freddy's Frozen Custard LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,397			1,397
Investments, at fair value, ending balance		1,391	[2],[10]				1,391	[2],[10]		1,397	[1],[5],[9]
Investment, Identifier [Axis]: Freddy's Frozen Custard LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			10			10
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		10	[1],[5]
Investment, Identifier [Axis]: G & H Wire Company, Inc
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance				0			0
Gross additions							6,587
Gross reductions							0
Net change in unrealized appreciation (depreciation)							319
Net realized gain (loss)							0
Investments, at fair value, ending balance		6,906					6,906			0
Interest, dividend and fee income							102
Investment, Identifier [Axis]: G & H Wire Company, Inc., LLC interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance	[1],[5]									0
Investment, Identifier [Axis]: G & H Wire Company, Inc., LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	4,129					4,129
Investment, Identifier [Axis]: G & H Wire Company, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[21]			6,564			6,564
Investments, at fair value, ending balance		2,777	[2],[10],[14]				2,777	[2],[10],[14]		6,564	[1],[5],[13],[21]
Investment, Identifier [Axis]: G & H Wire Company, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[21]			34			34
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		34	[1],[5],[13],[21]
Investment, Identifier [Axis]: GFP Atlantic Holdco 2, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,078			1,078
Investments, at fair value, ending balance		1,072	[2],[10]				1,072	[2],[10]		1,078	[1],[5],[9]
Investment, Identifier [Axis]: GFP Atlantic Holdco 2, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: GHX Ultimate Parent Corporation, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	54,019					54,019
Investment, Identifier [Axis]: GHX Ultimate Parent Corporation, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: GS Acquisitionco, Inc., LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			952			952
Investments, at fair value, ending balance		1,200	[2],[10]				1,200	[2],[10]		952	[1],[5]
Investment, Identifier [Axis]: GS Acquisitionco, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[15],[16],[19]			121,514			121,514
Investments, at fair value, ending balance		122,100	[2],[10],[18],[20]				122,100	[2],[10],[18],[20]		121,514	[1],[5],[9],[15],[16],[19]
Investment, Identifier [Axis]: GS Acquisitionco, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			65			65
Investments, at fair value, ending balance		73	[2],[10]				73	[2],[10]		65	[1],[5]
Investment, Identifier [Axis]: GS Acquisitionco, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(3)			(3)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(3)	[1],[5],[11]
Investment, Identifier [Axis]: GS Acquisitionco, Inc., Preferred stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			46,202			46,202
Investments, at fair value, ending balance		50,362	[2],[10],[27]				50,362	[2],[10],[27]		46,202	[1],[5],[26]
Investment, Identifier [Axis]: GS Acquisitionco, Inc., Preferred stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			5,741			5,741
Investments, at fair value, ending balance		6,258	[2],[10],[27]				6,258	[2],[10],[27]		5,741	[1],[5],[26]
Investment, Identifier [Axis]: GS Acquisitionco, Inc., Preferred stock 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			120			120
Investments, at fair value, ending balance		130	[2],[10],[27]				130	[2],[10],[27]		120	[1],[5],[26]
Investment, Identifier [Axis]: GTIV, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			72,000			72,000
Investments, at fair value, ending balance		70,908	[2],[10],[18]				70,908	[2],[10],[18]		72,000	[1],[5]
Investment, Identifier [Axis]: GTIV, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(3)			(3)
Investments, at fair value, ending balance		(5)	[2],[10],[12]				(5)	[2],[10],[12]		(3)	[1],[5],[11]
Investment, Identifier [Axis]: GTY Technology Holdings, Inc., LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			140			140
Investments, at fair value, ending balance		168	[2],[10]				168	[2],[10]		140	[1],[5]
Investment, Identifier [Axis]: GTY Technology Holdings, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			5,049			5,049
Investments, at fair value, ending balance		8,743	[2],[10],[14]				8,743	[2],[10],[14]		5,049	[1],[5],[9],[13]
Investment, Identifier [Axis]: GTY Technology Holdings, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			3,296			3,296
Investments, at fair value, ending balance		5,132	[2],[10],[14]				5,132	[2],[10],[14]		3,296	[1],[5],[9],[13]
Investment, Identifier [Axis]: GTY Technology Holdings, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			605			605
Investments, at fair value, ending balance		3,355	[2],[10],[14]				3,355	[2],[10],[14]		605	[1],[5],[13]
Investment, Identifier [Axis]: GTY Technology Holdings, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			424			424
Investments, at fair value, ending balance		1,001	[2],[10],[14]				1,001	[2],[10],[14]		424	[1],[5],[13]
Investment, Identifier [Axis]: GTY Technology Holdings, Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(2)			(2)
Investments, at fair value, ending balance		614	[2],[10],[14]				614	[2],[10],[14]		(2)	[1],[5],[11]
Investment, Identifier [Axis]: GTY Technology Holdings, Inc., One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		427	[2],[10],[14]				427	[2],[10],[14]		0	[1],[5],[11]
Investment, Identifier [Axis]: GTY Technology Holdings, Inc., One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	195					195
Investment, Identifier [Axis]: Gainsight, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[19]			17,981			17,981
Investments, at fair value, ending balance		17,846	[2],[10],[20]				17,846	[2],[10],[20]		17,981	[1],[5],[13],[19]
Investment, Identifier [Axis]: Gainsight, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			128			128
Investments, at fair value, ending balance		124	[2],[10]				124	[2],[10]		128	[1],[5],[13]
Investment, Identifier [Axis]: Georgica Pine Clothiers, LLC, Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2			2
Investments, at fair value, ending balance		2	[2],[10]				2	[2],[10]		2	[1],[5]
Investment, Identifier [Axis]: Georgica Pine Clothiers, LLC, LLC interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			369			369
Investments, at fair value, ending balance		394	[2],[10],[27]				394	[2],[10],[27]		369	[1],[5],[26]
Investment, Identifier [Axis]: Georgica Pine Clothiers, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			9,235			9,235
Investments, at fair value, ending balance		9,181	[2],[10]				9,181	[2],[10]		9,235	[1],[5]
Investment, Identifier [Axis]: Georgica Pine Clothiers, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			6,391			6,391
Investments, at fair value, ending balance		6,358	[2],[10]				6,358	[2],[10]		6,391	[1],[5]
Investment, Identifier [Axis]: Georgica Pine Clothiers, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			989			989
Investments, at fair value, ending balance		984	[2],[10]				984	[2],[10]		989	[1],[5]
Investment, Identifier [Axis]: Georgica Pine Clothiers, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			889			889
Investments, at fair value, ending balance		884	[2],[10]				884	[2],[10]		889	[1],[5]
Investment, Identifier [Axis]: Georgica Pine Clothiers, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			623			623
Investments, at fair value, ending balance		620	[2],[10]				620	[2],[10]		623	[1],[5]
Investment, Identifier [Axis]: Georgica Pine Clothiers, LLC, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2			2
Investments, at fair value, ending balance		2	[2],[10]				2	[2],[10]		2	[1],[5]
Investment, Identifier [Axis]: Gimlet Bidco GMBH, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[31],[45]			1,079			1,079
Investments, at fair value, ending balance		1,059	[2],[10],[25],[32],[46]				1,059	[2],[10],[25],[32],[46]		1,079	[1],[5],[8],[31],[45]
Investment, Identifier [Axis]: Gimlet Bidco GMBH, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[31],[45]			76			76
Investments, at fair value, ending balance		195	[2],[10],[25],[32],[46]				195	[2],[10],[25],[32],[46]		76	[1],[5],[8],[31],[45]
Investment, Identifier [Axis]: Go Car Wash Parent, Corp., Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			19			19
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		19	[1],[5]
Investment, Identifier [Axis]: Go Car Wash Parent, Corp., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			3,136			3,136
Investments, at fair value, ending balance		3,397	[2],[10],[27]				3,397	[2],[10],[27]		3,136	[1],[5],[26]
Investment, Identifier [Axis]: Goldcup 31018 AB, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[13],[31],[47]			14,283			14,283
Investments, at fair value, ending balance		14,098	[2],[10],[14],[25],[32],[48]				14,098	[2],[10],[14],[25],[32],[48]		14,283	[1],[5],[8],[9],[13],[31],[47]
Investment, Identifier [Axis]: Goldcup 31018 AB, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[13],[31],[47]			1,332			1,332
Investments, at fair value, ending balance		1,306	[2],[10],[14],[25],[32],[48]				1,306	[2],[10],[14],[25],[32],[48]		1,332	[1],[5],[8],[13],[31],[47]
Investment, Identifier [Axis]: Goldcup 31018 AB, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11],[31],[47]			0			0
Investments, at fair value, ending balance		214	[2],[10],[25],[32],[48]				214	[2],[10],[25],[32],[48]		0	[1],[5],[8],[11],[31],[47]
Investment, Identifier [Axis]: Graphpad Software, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			8,869			8,869
Investments, at fair value, ending balance		8,825	[2],[10]				8,825	[2],[10]		8,869	[1],[5]
Investment, Identifier [Axis]: Graphpad Software, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Graphpad Software, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			222			222
Investments, at fair value, ending balance		221	[2],[10]				221	[2],[10]		222	[1],[5]
Investment, Identifier [Axis]: Gurobi Optimization, LLC, Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			709			709
Investments, at fair value, ending balance		835	[2],[10]				835	[2],[10]		709	[1],[5]
Investment, Identifier [Axis]: Gurobi Optimization, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			52,235			52,235
Investments, at fair value, ending balance		51,664	[2],[10]				51,664	[2],[10]		52,235	[1],[5]
Investment, Identifier [Axis]: Gurobi Optimization, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(44)			(44)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(44)	[1],[5],[11]
Investment, Identifier [Axis]: HS Spa Holdings, Inc., Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			730			730
Investments, at fair value, ending balance		731	[2],[10]				731	[2],[10]		730	[1],[5]
Investment, Identifier [Axis]: HS Spa Holdings, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			11,550			11,550
Investments, at fair value, ending balance		11,491	[2],[10]				11,491	[2],[10]		11,550	[1],[5],[9]
Investment, Identifier [Axis]: HS Spa Holdings, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			64			64
Investments, at fair value, ending balance		337	[2],[10]				337	[2],[10]		64	[1],[5]
Investment, Identifier [Axis]: HS Spa Holdings, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		68	[2],[10]				68	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: HSI Halo Acquisition, Inc., LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			58			58
Investments, at fair value, ending balance		75	[2],[10]				75	[2],[10]		58	[1],[5]
Investment, Identifier [Axis]: HSI Halo Acquisition, Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			233			233
Investments, at fair value, ending balance		244	[2],[10],[27]				244	[2],[10],[27]		233	[1],[5],[26]
Investment, Identifier [Axis]: Harri US LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			711			711
Investments, at fair value, ending balance		785	[2],[10]				785	[2],[10]		711	[1],[5]
Investment, Identifier [Axis]: Harri US LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[19]			1,211			1,211
Investments, at fair value, ending balance		1,267	[2],[10],[14],[20]				1,267	[2],[10],[14],[20]		1,211	[1],[5],[13],[19]
Investment, Identifier [Axis]: Harri US LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			821			821
Investments, at fair value, ending balance		857	[2],[10],[14]				857	[2],[10],[14]		821	[1],[5],[13]
Investment, Identifier [Axis]: Harri US LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			797			797
Investments, at fair value, ending balance		832	[2],[10],[14]				832	[2],[10],[14]		797	[1],[5],[13]
Investment, Identifier [Axis]: Harri US LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(2)			(2)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(2)	[1],[5],[11]
Investment, Identifier [Axis]: Harri US LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(10)					(10)
Investment, Identifier [Axis]: Harri US LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(41)			(41)
Investments, at fair value, ending balance	[1],[5],[11]									(41)
Investment, Identifier [Axis]: Harri US LLC, Preferred stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			587			587
Investments, at fair value, ending balance		650	[2],[10]				650	[2],[10]		587	[1],[5]
Investment, Identifier [Axis]: Harri US LLC, Preferred stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,342			1,342
Investments, at fair value, ending balance		1,473	[2],[10]				1,473	[2],[10]		1,342	[1],[5]
Investment, Identifier [Axis]: Harri US LLC, Warrant 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			196			196
Investments, at fair value, ending balance		217	[2],[10]				217	[2],[10]		196	[1],[5]
Investment, Identifier [Axis]: Harri US LLC, Warrant 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			132			132
Investments, at fair value, ending balance		144	[2],[10]				144	[2],[10]		132	[1],[5]
Investment, Identifier [Axis]: Harri US LLC, Warrant 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	0					0
Investment, Identifier [Axis]: Health Buyer, LLC, Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			3,853			3,853
Investments, at fair value, ending balance		3,882	[2],[10]				3,882	[2],[10]		3,853	[1],[5],[9]
Investment, Identifier [Axis]: Health Buyer, LLC, Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,776			1,776
Investments, at fair value, ending balance		1,772	[2],[10]				1,772	[2],[10]		1,776	[1],[5],[9]
Investment, Identifier [Axis]: Health Buyer, LLC, Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			714			714
Investments, at fair value, ending balance		890	[2],[10]				890	[2],[10]		714	[1],[5]
Investment, Identifier [Axis]: Health Buyer, LLC, Senior secured 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		129	[2],[10]				129	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Health Buyer, LLC, Senior secured 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: HealthEdge Software, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			19,218			19,218
Investments, at fair value, ending balance		19,315	[2],[10]				19,315	[2],[10]		19,218	[1],[5]
Investment, Identifier [Axis]: HealthEdge Software, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(26)			(26)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(26)	[1],[5],[11]
Investment, Identifier [Axis]: HealthEdge Software, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(43)			(43)
Investments, at fair value, ending balance		8,521	[2],[10]				8,521	[2],[10]		(43)	[1],[5],[11]
Investment, Identifier [Axis]: Heartland Veterinary Partners LLC, Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			2,507			2,507
Investments, at fair value, ending balance		2,520	[2],[10]				2,520	[2],[10]		2,507	[1],[5],[9]
Investment, Identifier [Axis]: Heartland Veterinary Partners LLC, Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,190			1,190
Investments, at fair value, ending balance		1,196	[2],[10]				1,196	[2],[10]		1,190	[1],[5],[9]
Investment, Identifier [Axis]: Heartland Veterinary Partners LLC, Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Higginbotham Insurance Agency, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			8,093			8,093
Investments, at fair value, ending balance		8,052	[2],[10]				8,052	[2],[10]		8,093	[1],[5],[9]
Investment, Identifier [Axis]: Higginbotham Insurance Agency, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			220			220
Investments, at fair value, ending balance		523	[2],[10]				523	[2],[10]		220	[1],[5]
Investment, Identifier [Axis]: High Bar Brands Operating, LLC, Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,435			1,435
Investments, at fair value, ending balance		1,430	[2],[10]				1,430	[2],[10]		1,435	[1],[5],[9]
Investment, Identifier [Axis]: High Bar Brands Operating, LLC, Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			299			299
Investments, at fair value, ending balance		298	[2],[10]				298	[2],[10]		299	[1],[5],[9]
Investment, Identifier [Axis]: High Bar Brands Operating, LLC, Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			254			254
Investments, at fair value, ending balance		252	[2],[10]				252	[2],[10]		254	[1],[5]
Investment, Identifier [Axis]: High Bar Brands Operating, LLC, Senior secured 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		17	[2],[10]				17	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Hopdoddy Holdings, LLC, LLC units 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			217			217
Investments, at fair value, ending balance		271	[2],[10]				271	[2],[10]		217	[1],[5]
Investment, Identifier [Axis]: Hopdoddy Holdings, LLC, LLC units 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			48			48
Investments, at fair value, ending balance		60	[2],[10]				60	[2],[10]		48	[1],[5]
Investment, Identifier [Axis]: Hornet Security Holding GMBH, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[13],[31],[45]			748			748
Investments, at fair value, ending balance		727	[2],[10],[25],[28],[32]				727	[2],[10],[25],[28],[32]		748	[1],[5],[8],[9],[13],[31],[45]
Investment, Identifier [Axis]: Hornet Security Holding GMBH, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[13],[31],[45]			498			498
Investments, at fair value, ending balance		485	[2],[10],[25],[28],[32]				485	[2],[10],[25],[28],[32]		498	[1],[5],[8],[9],[13],[31],[45]
Investment, Identifier [Axis]: Hornet Security Holding GMBH, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11],[31],[45]			0			0
Investments, at fair value, ending balance		35	[2],[10],[25],[28],[32]				35	[2],[10],[25],[28],[32]		0	[1],[5],[8],[11],[31],[45]
Investment, Identifier [Axis]: Hornet Security Holding GMBH, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11],[31],[45]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12],[25],[28],[32]				0	[2],[10],[12],[25],[28],[32]		0	[1],[5],[8],[11],[31],[45]
Investment, Identifier [Axis]: HuFriedy Group Acquisition, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			7,851			7,851
Investments, at fair value, ending balance		7,891	[2],[10]				7,891	[2],[10]		7,851	[1],[5]
Investment, Identifier [Axis]: HuFriedy Group Acquisition, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(9)			(9)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(9)	[1],[5],[11]
Investment, Identifier [Axis]: HuFriedy Group Acquisition, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(17)			(17)
Investments, at fair value, ending balance		1,431	[2],[10]				1,431	[2],[10]		(17)	[1],[5],[11]
Investment, Identifier [Axis]: Hyland Software, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[15],[16]			47,242			47,242
Investments, at fair value, ending balance		47,005	[2],[10],[18]				47,005	[2],[10],[18]		47,242	[1],[5],[9],[15],[16]
Investment, Identifier [Axis]: Hyland Software, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: ICIMS, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			11,845			11,845
Investments, at fair value, ending balance		12,229	[2],[10],[14],[18]				12,229	[2],[10],[14],[18]		11,845	[1],[5],[9],[13]
Investment, Identifier [Axis]: ICIMS, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			80			80
Investments, at fair value, ending balance		28	[2],[10]				28	[2],[10]		80	[1],[5]
Investment, Identifier [Axis]: ICIMS, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(103)			(103)
Investments, at fair value, ending balance	[1],[5],[11]									(103)
Investment, Identifier [Axis]: IG Investments Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			9,122			9,122
Investments, at fair value, ending balance		12,941	[2],[10]				12,941	[2],[10]		9,122	[1],[5],[16]
Investment, Identifier [Axis]: IG Investments Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			782			782
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		782	[1],[5],[16]
Investment, Identifier [Axis]: IG Investments Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance	[1],[5]									0
Investment, Identifier [Axis]: IMPLUS Footcare, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			27,450			27,450
Investments, at fair value, ending balance		18,348	[2],[10],[14],[22]				18,348	[2],[10],[14],[22]		27,450	[1],[5],[13]
Investment, Identifier [Axis]: IMPLUS Footcare, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			4,688			4,688
Investments, at fair value, ending balance		3,134	[2],[10],[14],[22]				3,134	[2],[10],[14],[22]		4,688	[1],[5],[13]
Investment, Identifier [Axis]: IMPLUS Footcare, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[13]			675			675
Investments, at fair value, ending balance		452	[2],[10],[14],[22]				452	[2],[10],[14],[22]		675	[1],[5],[6],[13]
Investment, Identifier [Axis]: IQN Holding Corp., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16],[17]			22,887			22,887
Investments, at fair value, ending balance		22,771	[2],[10],[18]				22,771	[2],[10],[18]		22,887	[1],[5],[16],[17]
Investment, Identifier [Axis]: IQN Holding Corp., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			52			52
Investments, at fair value, ending balance		128	[2],[10]				128	[2],[10]		52	[1],[5]
Investment, Identifier [Axis]: Icefall Parent, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,407			1,407
Investments, at fair value, ending balance		1,407	[2],[10]				1,407	[2],[10]		1,407	[1],[5],[9]
Investment, Identifier [Axis]: Icefall Parent, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Illumifin Corporation, One stop
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			4,018			4,018
Investments, at fair value, ending balance		4,390	[2],[10],[14]				4,390	[2],[10],[14]		4,018	[1],[5],[9],[13]
Investment, Identifier [Axis]: Impartner, Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			217			217
Investments, at fair value, ending balance	[1],[5]									217
Investment, Identifier [Axis]: Impartner, Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	200					200
Investment, Identifier [Axis]: Imperial Optical Midco Inc, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			40,558			40,558
Investments, at fair value, ending balance	[1],[5]									40,558
Investment, Identifier [Axis]: Imperial Optical Midco Inc, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(282)			(282)
Investments, at fair value, ending balance	[1],[5],[11]									(282)
Investment, Identifier [Axis]: Imperial Optical Midco Inc, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(1,502)			(1,502)
Investments, at fair value, ending balance	[1],[5],[11]									(1,502)
Investment, Identifier [Axis]: Imperial Optical Midco Inc.
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance				93,864			93,864		0	0
Gross additions										94,556
Gross reductions										0
Net change in unrealized appreciation (depreciation)										(692)
Net realized gain (loss)										0
Investments, at fair value, ending balance										93,864
Interest, dividend and fee income										1,008
Investment, Identifier [Axis]: Imperial Optical Midco, Inc, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			55,090			55,090
Investments, at fair value, ending balance		55,162	[2],[10]				55,162	[2],[10]		55,090	[1],[5]
Investment, Identifier [Axis]: Inhabit IQ Inc. 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	6,873					6,873
Investment, Identifier [Axis]: Inhabit IQ Inc. 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(3)					(3)
Investment, Identifier [Axis]: Inhabit IQ Inc. 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(5)					(5)
Investment, Identifier [Axis]: Inhabit IQ Inc., Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,488			1,488
Investments, at fair value, ending balance		750	[2],[10]				750	[2],[10]		1,488	[1],[5]
Investment, Identifier [Axis]: Inhabit IQ Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[9],[16]			37,583			37,583
Investments, at fair value, ending balance	[1],[9],[16]									37,583
Investment, Identifier [Axis]: Inhabit IQ Inc., One stop 10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,166			1,166
Investments, at fair value, ending balance	[1],[5],[9]									1,166
Investment, Identifier [Axis]: Inhabit IQ Inc., One stop 11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			614			614
Investments, at fair value, ending balance	[1],[5],[9]									614
Investment, Identifier [Axis]: Inhabit IQ Inc., One stop 12
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance	[1],[5]									0
Investment, Identifier [Axis]: Inhabit IQ Inc., One stop 13
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[9]			680			680
Investments, at fair value, ending balance	[1],[9]									680
Investment, Identifier [Axis]: Inhabit IQ Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15],[17]			21,694			21,694
Investments, at fair value, ending balance	[1],[5],[15],[17]									21,694
Investment, Identifier [Axis]: Inhabit IQ Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			15,607			15,607
Investments, at fair value, ending balance	[1],[5],[15]									15,607
Investment, Identifier [Axis]: Inhabit IQ Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[6],[19]			21,366			21,366
Investments, at fair value, ending balance	[1],[6],[19]									21,366
Investment, Identifier [Axis]: Inhabit IQ Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[6],[15],[17]			7,460			7,460
Investments, at fair value, ending balance	[1],[6],[15],[17]									7,460
Investment, Identifier [Axis]: Inhabit IQ Inc., One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			3,988			3,988
Investments, at fair value, ending balance	[1],[5],[9]									3,988
Investment, Identifier [Axis]: Inhabit IQ Inc., One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[17]			1,745			1,745
Investments, at fair value, ending balance	[1],[5],[9],[17]									1,745
Investment, Identifier [Axis]: Inhabit IQ Inc., One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[17]			1,478			1,478
Investments, at fair value, ending balance	[1],[5],[9],[17]									1,478
Investment, Identifier [Axis]: Inhabit IQ Inc., One stop 9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[17]			1,461			1,461
Investments, at fair value, ending balance	[1],[5],[9],[17]									1,461
Investment, Identifier [Axis]: Inhance Technologies Holdings LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance	[1],[5]									0
Investment, Identifier [Axis]: Inhance Technologies Holdings LLC, Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			4,902			4,902
Investments, at fair value, ending balance	[1],[5]									4,902
Investment, Identifier [Axis]: Inhance Technologies Holdings, LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	0					0
Investment, Identifier [Axis]: Inhance Technologies Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13],[17]			12,257			12,257
Investments, at fair value, ending balance	[1],[5],[9],[13],[17]									12,257
Investment, Identifier [Axis]: Inhance Technologies Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[13],[16],[17]			11,130			11,130
Investments, at fair value, ending balance	[1],[13],[16],[17]									11,130
Investment, Identifier [Axis]: Inhance Technologies Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			2,165			2,165
Investments, at fair value, ending balance	[1],[5],[9],[13]									2,165
Investment, Identifier [Axis]: Inhance Technologies Holdings, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			251			251
Investments, at fair value, ending balance	[1],[5],[13]									251
Investment, Identifier [Axis]: Inhance Technologies Holdings, LLC, Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	3,304					3,304
Investment, Identifier [Axis]: Inhance Technologies Holdings, LLC., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14]	12,818					12,818
Investment, Identifier [Axis]: Inhance Technologies Holdings, LLC., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14]	11,639					11,639
Investment, Identifier [Axis]: Inhance Technologies Holdings, LLC., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14]	2,264					2,264
Investment, Identifier [Axis]: Inhance Technologies Holdings, LLC., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14]	263					263
Investment, Identifier [Axis]: Integrated Specialty Coverages, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			5,051			5,051
Investments, at fair value, ending balance		10,189	[2],[10]				10,189	[2],[10]		5,051	[1],[5],[9]
Investment, Identifier [Axis]: Integrated Specialty Coverages, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Integrated Specialty Coverages, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,008			1,008
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		1,008	[1],[5]
Investment, Identifier [Axis]: Integrity Marketing Acquisition, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15],[16]			44,110			44,110
Investments, at fair value, ending balance		44,989	[2],[10],[18]				44,989	[2],[10],[18]		44,110	[1],[5],[15],[16]
Investment, Identifier [Axis]: Integrity Marketing Acquisition, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(4)			(4)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(4)	[1],[5],[11]
Investment, Identifier [Axis]: Integrity Marketing Acquisition, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(39)			(39)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(39)	[1],[5],[11]
Investment, Identifier [Axis]: Internet Truckstop Group, LLC, LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			402			402
Investments, at fair value, ending balance		383	[2],[10]				383	[2],[10]		402	[1],[5]
Investment, Identifier [Axis]: Internet Truckstop Group, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			28,346			28,346
Investments, at fair value, ending balance		28,345	[2],[18]				28,345	[2],[18]		28,346	[1],[5],[15]
Investment, Identifier [Axis]: Internet Truckstop Group, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			12,427			12,427
Investments, at fair value, ending balance		12,427	[2],[10],[18]				12,427	[2],[10],[18]		12,427	[1],[5],[16]
Investment, Identifier [Axis]: Internet Truckstop Group, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(3)			(3)
Investments, at fair value, ending balance		(3)	[2],[10],[12]				(3)	[2],[10],[12]		(3)	[1],[5],[11]
Investment, Identifier [Axis]: Inventus Power, Inc., Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Inventus Power, Inc., LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			276			276
Investments, at fair value, ending balance		242	[2],[10]				242	[2],[10]		276	[1],[5]
Investment, Identifier [Axis]: Inventus Power, Inc., LP Interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			61			61
Investments, at fair value, ending balance	[1],[5]									61
Investment, Identifier [Axis]: Inventus Power, Inc., LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	61					61
Investment, Identifier [Axis]: Inventus Power, Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			20			20
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		20	[1],[5]
Investment, Identifier [Axis]: Island Bidco AB, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[13],[31],[47]			10,768			10,768
Investments, at fair value, ending balance		10,842	[2],[10],[14],[25],[32],[48]				10,842	[2],[10],[14],[25],[32],[48]		10,768	[1],[5],[8],[9],[13],[31],[47]
Investment, Identifier [Axis]: Island Bidco AB, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[13],[47]			4,791			4,791
Investments, at fair value, ending balance		4,874	[2],[10],[14],[25],[48]				4,874	[2],[10],[14],[25],[48]		4,791	[1],[5],[8],[9],[13],[47]
Investment, Identifier [Axis]: Island Bidco AB, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[13],[47]			3,535			3,535
Investments, at fair value, ending balance		3,597	[2],[10],[14],[25],[48]				3,597	[2],[10],[14],[25],[48]		3,535	[1],[5],[8],[13],[47]
Investment, Identifier [Axis]: Island Bidco AB, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11],[31],[47]			0			0
Investments, at fair value, ending balance		0	[2],[10],[25],[32],[48]				0	[2],[10],[25],[32],[48]		0	[1],[5],[8],[11],[31],[47]
Investment, Identifier [Axis]: Island Bidco AB, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[47]			0			0
Investments, at fair value, ending balance		0	[2],[10],[25],[48]				0	[2],[10],[25],[48]		0	[1],[5],[8],[47]
Investment, Identifier [Axis]: J.S. Held Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[15],[19]			22,154			22,154
Investments, at fair value, ending balance		38,027	[2],[10],[18],[20]				38,027	[2],[10],[18],[20]		22,154	[1],[5],[9],[15],[19]
Investment, Identifier [Axis]: J.S. Held Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			5,346			5,346
Investments, at fair value, ending balance		6,960	[2],[10]				6,960	[2],[10]		5,346	[1],[5],[16]
Investment, Identifier [Axis]: J.S. Held Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			5,171			5,171
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		5,171	[1],[5],[9]
Investment, Identifier [Axis]: J.S. Held Holdings, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			5,005			5,005
Investments, at fair value, ending balance	[1],[5],[9]									5,005
Investment, Identifier [Axis]: J.S. Held Holdings, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			159			159
Investments, at fair value, ending balance	[1],[5]									159
Investment, Identifier [Axis]: J.S. Held Holdings, LLC, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(6)			(6)
Investments, at fair value, ending balance	[1],[5],[11]									(6)
Investment, Identifier [Axis]: JHC Investment Intermediate Holdings, LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			188			188
Investments, at fair value, ending balance		832	[2],[10]				832	[2],[10]		188	[1],[5]
Investment, Identifier [Axis]: JHC Investment Intermediate Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			1,351			1,351
Investments, at fair value, ending balance		1,199	[2],[10],[14]				1,199	[2],[10],[14]		1,351	[1],[5],[13]
Investment, Identifier [Axis]: JHC Investment Intermediate Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[21]			684			684
Investments, at fair value, ending balance		850	[2],[10],[14]				850	[2],[10],[14]		684	[1],[5],[13],[21]
Investment, Identifier [Axis]: JHCC Holdings LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			17,889			17,889
Investments, at fair value, ending balance		17,799	[2],[10],[18]				17,799	[2],[10],[18]		17,889	[1],[5],[15]
Investment, Identifier [Axis]: JHCC Holdings LLC, One stop 10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	2,880					2,880
Investment, Identifier [Axis]: JHCC Holdings LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			5,179			5,179
Investments, at fair value, ending balance		6,922	[2],[10]				6,922	[2],[10]		5,179	[1],[5],[9]
Investment, Identifier [Axis]: JHCC Holdings LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			4,951			4,951
Investments, at fair value, ending balance		5,152	[2],[10]				5,152	[2],[10]		4,951	[1],[5]
Investment, Identifier [Axis]: JHCC Holdings LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			3,714			3,714
Investments, at fair value, ending balance		4,926	[2],[10]				4,926	[2],[10]		3,714	[1],[5]
Investment, Identifier [Axis]: JHCC Holdings LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,797			2,797
Investments, at fair value, ending balance		2,778	[2],[10]				2,778	[2],[10]		2,797	[1],[5]
Investment, Identifier [Axis]: JHCC Holdings LLC, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,659			1,659
Investments, at fair value, ending balance		1,650	[2],[10]				1,650	[2],[10]		1,659	[1],[5],[9]
Investment, Identifier [Axis]: JHCC Holdings LLC, One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			732			732
Investments, at fair value, ending balance		730	[2],[10]				730	[2],[10]		732	[1],[5],[9]
Investment, Identifier [Axis]: JHCC Holdings LLC, One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			695			695
Investments, at fair value, ending balance		692	[2],[10]				692	[2],[10]		695	[1],[5],[9]
Investment, Identifier [Axis]: JHCC Holdings LLC, One stop 9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			66			66
Investments, at fair value, ending balance		80	[2],[10]				80	[2],[10]		66	[1],[5]
Investment, Identifier [Axis]: Juvare, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[6],[15]			10,221			10,221
Investments, at fair value, ending balance		10,432	[2],[10]				10,432	[2],[10]		10,221	[1],[6],[15]
Investment, Identifier [Axis]: Juvare, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			2,359			2,359
Investments, at fair value, ending balance		2,407	[2],[10]				2,407	[2],[10]		2,359	[1],[5],[16]
Investment, Identifier [Axis]: Juvare, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			745			745
Investments, at fair value, ending balance		761	[2],[10]				761	[2],[10]		745	[1],[5]
Investment, Identifier [Axis]: Juvare, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			98			98
Investments, at fair value, ending balance		100	[2],[10]				100	[2],[10]		98	[1],[5]
Investment, Identifier [Axis]: Kaseya Inc., LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			267			267
Investments, at fair value, ending balance		287	[2],[10]				287	[2],[10]		267	[1],[5]
Investment, Identifier [Axis]: Kaseya Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13],[19]			23,506			23,506
Investments, at fair value, ending balance	[1],[5],[9],[13],[19]									23,506
Investment, Identifier [Axis]: Kaseya Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			271			271
Investments, at fair value, ending balance	[1],[5]									271
Investment, Identifier [Axis]: Kaseya Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			136			136
Investments, at fair value, ending balance	[1],[5],[13]									136
Investment, Identifier [Axis]: Kaseya Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			86			86
Investments, at fair value, ending balance	[1],[5]									86
Investment, Identifier [Axis]: Kaseya Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			5,787			5,787
Investments, at fair value, ending balance	[1],[5],[26]									5,787
Investment, Identifier [Axis]: Kaseya Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[27]	3,903					3,903
Investment, Identifier [Axis]: Kentik Technologies, Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,578			1,578
Investments, at fair value, ending balance		2,924	[2],[10]				2,924	[2],[10]		1,578	[1],[5]
Investment, Identifier [Axis]: Kentik Technologies, Inc., Second lien 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14]	51					51
Investment, Identifier [Axis]: Kentik Technologies, Inc., Second lien 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(2)					(2)
Investment, Identifier [Axis]: Kentik Technologies, Inc., Warrant
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	3					3
Investment, Identifier [Axis]: Keystone Agency Partners LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	3,504					3,504
Investment, Identifier [Axis]: Keystone Agency Partners LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	3,010					3,010
Investment, Identifier [Axis]: Keystone Agency Partners LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	2,836					2,836
Investment, Identifier [Axis]: Keystone Agency Partners LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	2,832					2,832
Investment, Identifier [Axis]: Keystone Agency Partners LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	2,008					2,008
Investment, Identifier [Axis]: Keystone Agency Partners LLC, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	609					609
Investment, Identifier [Axis]: Keystone Agency Partners LLC, One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(57)					(57)
Investment, Identifier [Axis]: Keystone Agency Partners LLC, Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			3,558			3,558
Investments, at fair value, ending balance	[1],[5],[9]									3,558
Investment, Identifier [Axis]: Keystone Agency Partners LLC, Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,039			2,039
Investments, at fair value, ending balance	[1],[5]									2,039
Investment, Identifier [Axis]: Keystone Agency Partners LLC, Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			2,875			2,875
Investments, at fair value, ending balance	[1],[5],[16]									2,875
Investment, Identifier [Axis]: Keystone Agency Partners LLC, Senior secured 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			618			618
Investments, at fair value, ending balance	[1],[5],[9]									618
Investment, Identifier [Axis]: Keystone Agency Partners LLC, Senior secured 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,108			2,108
Investments, at fair value, ending balance	[1],[5]									2,108
Investment, Identifier [Axis]: Kleinfelder Intermediate, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			4,087			4,087
Investments, at fair value, ending balance	[1],[5],[9]									4,087
Investment, Identifier [Axis]: Kleinfelder Intermediate, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			120			120
Investments, at fair value, ending balance	[1],[5]									120
Investment, Identifier [Axis]: Kleinfelder Intermediate, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance	[1],[5],[11]									0
Investment, Identifier [Axis]: Kleinfelder Intermediate, LLC., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	4,066					4,066
Investment, Identifier [Axis]: Kleinfelder Intermediate, LLC., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: Kleinfelder Intermediate, LLC., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: Klick Inc., Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[16]			13,629			13,629
Investments, at fair value, ending balance		13,558	[2],[10],[18],[25],[29]				13,558	[2],[10],[18],[25],[29]		13,629	[1],[5],[7],[8],[16]
Investment, Identifier [Axis]: Klick Inc., Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[11]			0			0
Investments, at fair value, ending balance		3,171	[2],[10],[25],[29]				3,171	[2],[10],[25],[29]		0	[1],[5],[7],[8],[11]
Investment, Identifier [Axis]: Klick Inc., Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8]			3,179			3,179
Investments, at fair value, ending balance		0	[2],[10],[12],[25],[29]				0	[2],[10],[12],[25],[29]		3,179	[1],[5],[7],[8]
Investment, Identifier [Axis]: Kodiak Cakes, LLC, Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			842			842
Investments, at fair value, ending balance		1,629	[2],[10]				1,629	[2],[10]		842	[1],[5],[26]
Investment, Identifier [Axis]: Kodiak Cakes, LLC, Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[19]			46,378			46,378
Investments, at fair value, ending balance		46,145	[2],[10],[18],[20]				46,145	[2],[10],[18],[20]		46,378	[1],[5],[19]
Investment, Identifier [Axis]: Kodiak Cakes, LLC, Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Kona Buyer, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			15,674			15,674
Investments, at fair value, ending balance		15,792	[2],[10]				15,792	[2],[10]		15,674	[1],[5]
Investment, Identifier [Axis]: Kona Buyer, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(19)			(19)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(19)	[1],[5],[11]
Investment, Identifier [Axis]: Kona Buyer, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		927	[2],[10]				927	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Kona Buyer, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(23)			(23)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(23)	[1],[5],[11]
Investment, Identifier [Axis]: Krayden Holdings, Inc., Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			9,741			9,741
Investments, at fair value, ending balance		9,790	[2],[10]				9,790	[2],[10]		9,741	[1],[5]
Investment, Identifier [Axis]: Krayden Holdings, Inc., Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(34)			(34)
Investments, at fair value, ending balance		115	[2],[10]				115	[2],[10]		(34)	[1],[5],[11]
Investment, Identifier [Axis]: Krayden Holdings, Inc., Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(49)			(49)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(49)	[1],[5],[11]
Investment, Identifier [Axis]: Krueger-Gilbert Health Physics, LLC, Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			621			621
Investments, at fair value, ending balance		600	[2],[10]				600	[2],[10]		621	[1],[5]
Investment, Identifier [Axis]: Krueger-Gilbert Health Physics, LLC, One stop
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			671			671
Investments, at fair value, ending balance		668	[2],[10]				668	[2],[10]		671	[1],[5]
Investment, Identifier [Axis]: Krueger-Gilbert Health Physics, LLC, Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			2,599			2,599
Investments, at fair value, ending balance		2,585	[2],[10],[18]				2,585	[2],[10],[18]		2,599	[1],[5],[15]
Investment, Identifier [Axis]: Krueger-Gilbert Health Physics, LLC, Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			2,386			2,386
Investments, at fair value, ending balance		2,375	[2],[10],[18]				2,375	[2],[10],[18]		2,386	[1],[5],[15]
Investment, Identifier [Axis]: Krueger-Gilbert Health Physics, LLC, Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			1,526			1,526
Investments, at fair value, ending balance		1,517	[2],[18]				1,517	[2],[18]		1,526	[1],[5],[15]
Investment, Identifier [Axis]: Krueger-Gilbert Health Physics, LLC, Senior secured 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,395			1,395
Investments, at fair value, ending balance		1,390	[2],[10],[18]				1,390	[2],[10],[18]		1,395	[1],[5]
Investment, Identifier [Axis]: Krueger-Gilbert Health Physics, LLC, Senior secured 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			615			615
Investments, at fair value, ending balance		611	[2],[10]				611	[2],[10]		615	[1],[5],[9]
Investment, Identifier [Axis]: Krueger-Gilbert Health Physics, LLC, Senior secured 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		90	[2],[10]				90	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Krueger-Gilbert Health Physics, LLC, Senior secured 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			90			90
Investments, at fair value, ending balance		8	[2],[10]				8	[2],[10]		90	[1],[5]
Investment, Identifier [Axis]: LDS Intermediate Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	7,380					7,380
Investment, Identifier [Axis]: LDS Intermediate Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	140					140
Investment, Identifier [Axis]: LDS Intermediate Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(9)					(9)
Investment, Identifier [Axis]: LMP TR Holdings, LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1]			1,691			1,691
Investments, at fair value, ending balance		1,059	[2],[10]				1,059	[2],[10]		1,691	[1]
Investment, Identifier [Axis]: LOV Acquisition LLC, Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	25,123					25,123
Investment, Identifier [Axis]: LOV Acquisition LLC, Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: Lacker Bidco Limited, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30],[31]			634			634
Investments, at fair value, ending balance		606	[2],[10],[25],[28],[32]				606	[2],[10],[25],[28],[32]		634	[1],[5],[8],[9],[30],[31]
Investment, Identifier [Axis]: Lacker Bidco Limited, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			142			142
Investments, at fair value, ending balance		274	[2],[10],[25],[28],[32]				274	[2],[10],[25],[28],[32]		142	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: Lacker Bidco Limited, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11],[30],[31]			0			0
Investments, at fair value, ending balance		(1)	[2],[10],[12],[25],[28],[32]				(1)	[2],[10],[12],[25],[28],[32]		0	[1],[5],[8],[11],[30],[31]
Investment, Identifier [Axis]: LeadsOnline, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[19]			13,049			13,049
Investments, at fair value, ending balance		12,983	[2],[10],[20]				12,983	[2],[10],[20]		13,049	[1],[5],[19]
Investment, Identifier [Axis]: LeadsOnline, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			2,303			2,303
Investments, at fair value, ending balance		2,291	[2],[10]				2,291	[2],[10]		2,303	[1],[5],[9]
Investment, Identifier [Axis]: LeadsOnline, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			667			667
Investments, at fair value, ending balance		664	[2],[10]				664	[2],[10]		667	[1],[5],[9]
Investment, Identifier [Axis]: LeadsOnline, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Learn-it Systems, LLC, Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			3,381			3,381
Investments, at fair value, ending balance		3,388	[2],[10],[14]				3,388	[2],[10],[14]		3,381	[1],[5],[9],[13]
Investment, Identifier [Axis]: Learn-it Systems, LLC, Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			1,991			1,991
Investments, at fair value, ending balance		1,996	[2],[10],[14]				1,996	[2],[10],[14]		1,991	[1],[5],[13]
Investment, Identifier [Axis]: Learn-it Systems, LLC, Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			847			847
Investments, at fair value, ending balance		850	[2],[10],[14]				850	[2],[10],[14]		847	[1],[5],[13]
Investment, Identifier [Axis]: Learn-it Systems, LLC, Senior secured 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		16	[2],[10]				16	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Lighthouse Bidco GMBH, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[32],[46]	18,488					18,488
Investment, Identifier [Axis]: Lighthouse Bidco GMBH, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[32],[46]	0					0
Investment, Identifier [Axis]: Lighthouse Bidco GMBH, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12],[25],[32],[46]	0					0
Investment, Identifier [Axis]: Lightning Finco Limited, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30]			14,802			14,802
Investments, at fair value, ending balance		14,802	[2],[10],[25],[40]				14,802	[2],[10],[25],[40]		14,802	[1],[5],[8],[30]
Investment, Identifier [Axis]: Lightning Finco Limited, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			1,692			1,692
Investments, at fair value, ending balance		1,643	[2],[10],[25],[32],[40]				1,643	[2],[10],[25],[32],[40]		1,692	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: Liminex, Inc., Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			681			681
Investments, at fair value, ending balance		532	[2],[10]				532	[2],[10]		681	[1],[5]
Investment, Identifier [Axis]: Liminex, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			35,650			35,650
Investments, at fair value, ending balance		35,561	[2],[10]				35,561	[2],[10]		35,650	[1],[5],[9]
Investment, Identifier [Axis]: Liminex, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			23,516			23,516
Investments, at fair value, ending balance		23,457	[2],[10]				23,457	[2],[10]		23,516	[1],[5],[9]
Investment, Identifier [Axis]: Liminex, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			15,953			15,953
Investments, at fair value, ending balance		20,270	[2],[10],[20]				20,270	[2],[10],[20]		15,953	[1],[5],[9]
Investment, Identifier [Axis]: Liminex, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[19]			20,321			20,321
Investments, at fair value, ending balance		15,913	[2],[10]				15,913	[2],[10]		20,321	[1],[5],[9],[19]
Investment, Identifier [Axis]: Litera Bidco, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			5,201			5,201
Investments, at fair value, ending balance		5,175	[2],[18]				5,175	[2],[18]		5,201	[1],[5],[15]
Investment, Identifier [Axis]: Litera Bidco, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,060			1,060
Investments, at fair value, ending balance		2,066	[2],[10]				2,066	[2],[10]		1,060	[1],[5]
Investment, Identifier [Axis]: Litera Bidco, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Litera Bidco, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: LogicMonitor, Inc., LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	257					257
Investment, Identifier [Axis]: LogicMonitor, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	53,749					53,749
Investment, Identifier [Axis]: LogicMonitor, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: Lotus Topco, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			5,164			5,164
Investments, at fair value, ending balance		5,138	[2],[18]				5,138	[2],[18]		5,164	[1],[5]
Investment, Identifier [Axis]: Lotus Topco, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Lotus Topco, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Louisiana Fish Fry Products, Ltd., Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			331			331
Investments, at fair value, ending balance		229	[2],[10]				229	[2],[10]		331	[1],[5]
Investment, Identifier [Axis]: Louisiana Fish Fry Products, Ltd., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[9],[15]			13,564			13,564
Investments, at fair value, ending balance		13,493	[2],[10],[18]				13,493	[2],[10],[18]		13,564	[1],[5],[6],[9],[15]
Investment, Identifier [Axis]: Louisiana Fish Fry Products, Ltd., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			192			192
Investments, at fair value, ending balance		178	[2],[10]				178	[2],[10]		192	[1],[5]
Investment, Identifier [Axis]: Louisiana Fish Fry Products, Ltd., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			36			36
Investments, at fair value, ending balance		36	[2],[10]				36	[2],[10]		36	[1],[5]
Investment, Identifier [Axis]: MAPF Holdings, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[15],[16],[17],[19]			46,258			46,258
Investments, at fair value, ending balance		49,120	[2],[10],[20]				49,120	[2],[10],[20]		46,258	[1],[5],[6],[15],[16],[17],[19]
Investment, Identifier [Axis]: MAPF Holdings, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			534			534
Investments, at fair value, ending balance		430	[2],[10]				430	[2],[10]		534	[1],[5]
Investment, Identifier [Axis]: MAPF Holdings, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,482			1,482
Investments, at fair value, ending balance		1,574	[2],[10]				1,574	[2],[10]		1,482	[1],[5],[9]
Investment, Identifier [Axis]: MAPF Holdings, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,076			1,076
Investments, at fair value, ending balance		1,700	[2],[10],[14]				1,700	[2],[10],[14]		1,076	[1],[5]
Investment, Identifier [Axis]: MMan Acquisition Co.
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance				12,205			12,205		12,790	12,790
Gross additions							238			11,979
Gross reductions							0			(11,344)
Net change in unrealized appreciation (depreciation)							(527)			10,406
Net realized gain (loss)							0			(11,626)
Investments, at fair value, ending balance		11,916					11,916			12,205
Interest, dividend and fee income							249			439
Investment, Identifier [Axis]: MMan Acquisition Co., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			1,073			1,073
Investments, at fair value, ending balance	[1],[5],[13]									1,073
Investment, Identifier [Axis]: MMan Acquisition Co., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			1,813			1,813
Investments, at fair value, ending balance		1,909	[2],[10],[14]				1,909	[2],[10],[14]		1,813	[1],[5],[13]
Investment, Identifier [Axis]: MMan Acquisition Co., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14]	1,138					1,138
Investment, Identifier [Axis]: MMan Acquisition Co., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			1,153			1,153
Investments, at fair value, ending balance		1,224	[2],[10],[14]				1,224	[2],[10],[14]		1,153	[1],[5],[13]
Investment, Identifier [Axis]: MMan Acquisition Co., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			334			334
Investments, at fair value, ending balance		354	[2],[10],[14]				354	[2],[10],[14]		334	[1],[5],[13]
Investment, Identifier [Axis]: MMan Acquisition Co., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			7,832			7,832
Investments, at fair value, ending balance		7,291	[2],[10]				7,291	[2],[10]		7,832	[1],[5]
Investment, Identifier [Axis]: MOP GM Holding, LLC, LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			546			546
Investments, at fair value, ending balance		451	[2],[10]				451	[2],[10]		546	[1],[5]
Investment, Identifier [Axis]: MOP GM Holding, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[15],[17],[19]			32,559			32,559
Investments, at fair value, ending balance		32,717	[2],[10],[18],[20]				32,717	[2],[10],[18],[20]		32,559	[1],[5],[6],[15],[17],[19]
Investment, Identifier [Axis]: MOP GM Holding, LLC, One stop 10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			396			396
Investments, at fair value, ending balance		400	[2],[10]				400	[2],[10]		396	[1],[5]
Investment, Identifier [Axis]: MOP GM Holding, LLC, One stop 11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			264			264
Investments, at fair value, ending balance		266	[2],[10]				266	[2],[10]		264	[1],[5]
Investment, Identifier [Axis]: MOP GM Holding, LLC, One stop 12
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			201			201
Investments, at fair value, ending balance		202	[2],[10]				202	[2],[10]		201	[1],[5]
Investment, Identifier [Axis]: MOP GM Holding, LLC, One stop 13
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			88			88
Investments, at fair value, ending balance		88	[2],[10]				88	[2],[10]		88	[1],[5]
Investment, Identifier [Axis]: MOP GM Holding, LLC, One stop 14
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			88			88
Investments, at fair value, ending balance		88	[2],[10]				88	[2],[10]		88	[1],[5]
Investment, Identifier [Axis]: MOP GM Holding, LLC, One stop 15
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: MOP GM Holding, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			3,827			3,827
Investments, at fair value, ending balance		3,846	[2],[10]				3,846	[2],[10]		3,827	[1],[5],[16]
Investment, Identifier [Axis]: MOP GM Holding, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			3,581			3,581
Investments, at fair value, ending balance		3,599	[2],[10],[18]				3,599	[2],[10],[18]		3,581	[1],[5],[15]
Investment, Identifier [Axis]: MOP GM Holding, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[19]			3,502			3,502
Investments, at fair value, ending balance		3,518	[2],[18],[20]				3,518	[2],[18],[20]		3,502	[1],[5],[19]
Investment, Identifier [Axis]: MOP GM Holding, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[19]			2,594			2,594
Investments, at fair value, ending balance		2,607	[2],[18],[20]				2,607	[2],[18],[20]		2,594	[1],[5],[19]
Investment, Identifier [Axis]: MOP GM Holding, LLC, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			2,140			2,140
Investments, at fair value, ending balance		2,150	[2],[10]				2,150	[2],[10]		2,140	[1],[5],[16]
Investment, Identifier [Axis]: MOP GM Holding, LLC, One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			1,973			1,973
Investments, at fair value, ending balance		1,983	[2],[10]				1,983	[2],[10]		1,973	[1],[5],[16]
Investment, Identifier [Axis]: MOP GM Holding, LLC, One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			718			718
Investments, at fair value, ending balance		722	[2],[10]				722	[2],[10]		718	[1],[5]
Investment, Identifier [Axis]: MOP GM Holding, LLC, One stop 9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			528			528
Investments, at fair value, ending balance		530	[2],[10]				530	[2],[10]		528	[1],[5]
Investment, Identifier [Axis]: MOP GM Holding, LLC, Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			36			36
Investments, at fair value, ending balance		40	[2],[10]				40	[2],[10]		36	[1],[5]
Investment, Identifier [Axis]: MRH Trowe Germany GMBH, One stop
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[31],[45]			789			789
Investments, at fair value, ending balance		1,153	[2],[10],[25],[32],[46]				1,153	[2],[10],[25],[32],[46]		789	[1],[5],[8],[31],[45]
Investment, Identifier [Axis]: MRI Software, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[15],[19]			28,625			28,625
Investments, at fair value, ending balance		32,907	[2],[10],[18],[20]				32,907	[2],[10],[18],[20]		28,625	[1],[5],[6],[15],[19]
Investment, Identifier [Axis]: MRI Software, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15],[16],[19]			13,023			13,023
Investments, at fair value, ending balance		13,086	[2],[10],[18],[20]				13,086	[2],[10],[18],[20]		13,023	[1],[5],[15],[16],[19]
Investment, Identifier [Axis]: MRI Software, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(31)			(31)
Investments, at fair value, ending balance		176	[2],[10]				176	[2],[10]		(31)	[1],[5],[11]
Investment, Identifier [Axis]: MRI Software, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			938			938
Investments, at fair value, ending balance		3,032	[2],[10]				3,032	[2],[10]		938	[1],[5]
Investment, Identifier [Axis]: MRI Software, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			3,086			3,086
Investments, at fair value, ending balance	[1],[5]									3,086
Investment, Identifier [Axis]: MWD Management, LLC & MWD Services, Inc., LLC interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			660			660
Investments, at fair value, ending balance		701	[2],[10]				701	[2],[10]		660	[1],[5]
Investment, Identifier [Axis]: Majesco, LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			324			324
Investments, at fair value, ending balance		484	[2],[10]				484	[2],[10]		324	[1],[5]
Investment, Identifier [Axis]: Majesco, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[9],[15],[19]			28,248			28,248
Investments, at fair value, ending balance		28,101	[2],[18],[20]				28,101	[2],[18],[20]		28,248	[1],[9],[15],[19]
Investment, Identifier [Axis]: Majesco, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Majesco, Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			611			611
Investments, at fair value, ending balance		639	[2],[10],[27]				639	[2],[10],[27]		611	[1],[5],[26]
Investment, Identifier [Axis]: MakerSights, Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			104			104
Investments, at fair value, ending balance		106	[2],[10]				106	[2],[10]		104	[1],[5]
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			17,915			17,915
Investments, at fair value, ending balance		18,825	[2],[10],[14]				18,825	[2],[10],[14]		17,915	[1],[5],[9]
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[16]			18,583			18,583
Investments, at fair value, ending balance		19,527	[2],[10],[14]				19,527	[2],[10],[14]		18,583	[1],[5],[9],[16]
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			5,563			5,563
Investments, at fair value, ending balance		5,859	[2],[10],[14]				5,859	[2],[10],[14]		5,563	[1],[5],[9]
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			2,274			2,274
Investments, at fair value, ending balance		2,390	[2],[10],[14]				2,390	[2],[10],[14]		2,274	[1],[5],[9]
Investment, Identifier [Axis]: Marcone Yellowstone Buyer Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			5,953			5,953
Investments, at fair value, ending balance		6,255	[2],[10],[14]				6,255	[2],[10],[14]		5,953	[1],[5],[16]
Investment, Identifier [Axis]: Mario Purchaser, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			410			410
Investments, at fair value, ending balance		10,985	[2],[10],[18]				10,985	[2],[10],[18]		410	[1],[5]
Investment, Identifier [Axis]: Mario Purchaser, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			11,270			11,270
Investments, at fair value, ending balance		5,058	[2],[10]				5,058	[2],[10]		11,270	[1],[5],[9]
Investment, Identifier [Axis]: Mario Purchaser, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			4,384			4,384
Investments, at fair value, ending balance		4,784	[2],[10],[14]				4,784	[2],[10],[14]		4,384	[1],[5],[13]
Investment, Identifier [Axis]: Mario Purchaser, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			5,188			5,188
Investments, at fair value, ending balance		316	[2],[10]				316	[2],[10]		5,188	[1],[5]
Investment, Identifier [Axis]: Mario Purchaser, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			14			14
Investments, at fair value, ending balance		50	[2],[10]				50	[2],[10]		14	[1],[5]
Investment, Identifier [Axis]: Massage Envy, LLC, LLC interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,682			1,682
Investments, at fair value, ending balance		1,798	[2],[10]				1,798	[2],[10]		1,682	[1],[5]
Investment, Identifier [Axis]: Matrix42 Holding GMBH, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[23],[31]			10,121			10,121
Investments, at fair value, ending balance		9,834	[2],[10],[25],[32],[46]				9,834	[2],[10],[25],[32],[46]		10,121	[1],[5],[8],[9],[23],[31]
Investment, Identifier [Axis]: Matrix42 Holding GMBH, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[23],[31]			1,533			1,533
Investments, at fair value, ending balance		1,490	[2],[10],[25],[32],[46]				1,490	[2],[10],[25],[32],[46]		1,533	[1],[5],[8],[9],[23],[31]
Investment, Identifier [Axis]: Matrix42 Holding GMBH, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[23],[31]			789			789
Investments, at fair value, ending balance		767	[2],[10],[25],[32],[46]				767	[2],[10],[25],[32],[46]		789	[1],[5],[8],[9],[23],[31]
Investment, Identifier [Axis]: Matrix42 Holding GMBH, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11],[23],[31]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12],[25],[32],[46]				0	[2],[10],[12],[25],[32],[46]		0	[1],[5],[8],[11],[23],[31]
Investment, Identifier [Axis]: Matrix42 Holding GMBH, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[23]			0			0
Investments, at fair value, ending balance		0	[2],[10],[25],[46]				0	[2],[10],[25],[46]		0	[1],[5],[8],[23]
Investment, Identifier [Axis]: Medlar Bidco Limited, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[32],[49]	0					0
Investment, Identifier [Axis]: Medlar Bidco Limited, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[32],[49]	0					0
Investment, Identifier [Axis]: Medlar Bidco Limited, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[32],[49]	0					0
Investment, Identifier [Axis]: Mendocino Farms, LLC, Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			1,433			1,433
Investments, at fair value, ending balance		1,392	[2],[10]				1,392	[2],[10]		1,433	[1],[5],[26]
Investment, Identifier [Axis]: Mendocino Farms, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	995					995
Investment, Identifier [Axis]: Mendocino Farms, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,001			1,001
Investments, at fair value, ending balance	[1],[5],[9]									1,001
Investment, Identifier [Axis]: Mendocino Farms, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Mendocino Farms, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Mendocino Farms, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			112			112
Investments, at fair value, ending balance		110	[2],[10]				110	[2],[10]		112	[1],[5]
Investment, Identifier [Axis]: Mendocino Farms, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	112					112
Investment, Identifier [Axis]: Messenger, LLC, LLC units 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			620			620
Investments, at fair value, ending balance		741	[2],[10]				741	[2],[10]		620	[1],[5]
Investment, Identifier [Axis]: Messenger, LLC, LLC units 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Messenger, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[15],[17]			14,397			14,397
Investments, at fair value, ending balance		14,397	[2],[10],[18]				14,397	[2],[10],[18]		14,397	[1],[5],[9],[15],[17]
Investment, Identifier [Axis]: Messenger, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[31]			926			926
Investments, at fair value, ending balance		894	[2],[10],[25],[32]				894	[2],[10],[25],[32]		926	[1],[5],[8],[31]
Investment, Identifier [Axis]: Messenger, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	520					520
Investment, Identifier [Axis]: Messenger, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[31]			0			0
Investments, at fair value, ending balance		0	[2],[10],[25],[32]				0	[2],[10],[25],[32]		0	[1],[5],[8],[31]
Investment, Identifier [Axis]: Messenger, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			1,508			1,508
Investments, at fair value, ending balance		1,508	[2],[10],[18]				1,508	[2],[10],[18]		1,508	[1],[5],[15]
Investment, Identifier [Axis]: Messenger, LLC, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			756			756
Investments, at fair value, ending balance		756	[2],[10]				756	[2],[10]		756	[1],[5],[9]
Investment, Identifier [Axis]: Messenger, LLC, One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Messenger, LLC, One stop3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			520			520
Investments, at fair value, ending balance	[1],[5]									520
Investment, Identifier [Axis]: Metal Supermarkets US Buyer, LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[29]	0					0
Investment, Identifier [Axis]: Metal Supermarkets US Buyer, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[29]	11,656					11,656
Investment, Identifier [Axis]: Metal Supermarkets US Buyer, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[29]	139					139
Investment, Identifier [Axis]: Metal Supermarkets US Buyer, LLC, Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[29]	323					323
Investment, Identifier [Axis]: Metatiedot Bidco Oy & Metatiedot US, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[32],[50]	15,917					15,917
Investment, Identifier [Axis]: Metatiedot Bidco Oy & Metatiedot US, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[50]	11,017					11,017
Investment, Identifier [Axis]: Metatiedot Bidco Oy & Metatiedot US, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[32],[50]	129					129
Investment, Identifier [Axis]: Metatiedot Bidco Oy & Metatiedot US, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12],[25],[32],[50]	0					0
Investment, Identifier [Axis]: Midwest Veterinary Partners, LLC, Preferred stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			2,123			2,123
Investments, at fair value, ending balance	[1],[5],[26]									2,123
Investment, Identifier [Axis]: Midwest Veterinary Partners, LLC, Preferred stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			68			68
Investments, at fair value, ending balance	[1],[5],[26]									68
Investment, Identifier [Axis]: Midwest Veterinary Partners, LLC, Warrant
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			482			482
Investments, at fair value, ending balance	[1],[5]									482
Investment, Identifier [Axis]: Mindbody, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			61,966			61,966
Investments, at fair value, ending balance		61,966	[2],[10]				61,966	[2],[10]		61,966	[1],[5],[9]
Investment, Identifier [Axis]: Mindbody, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			2,134			2,134
Investments, at fair value, ending balance		2,134	[2],[10]				2,134	[2],[10]		2,134	[1],[5],[9]
Investment, Identifier [Axis]: Mindbody, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Ministry Brands Holdings LLC, LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			704			704
Investments, at fair value, ending balance		649	[2],[10]				649	[2],[10]		704	[1],[5]
Investment, Identifier [Axis]: Ministry Brands Holdings LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			30,448			30,448
Investments, at fair value, ending balance		30,292	[2],[10]				30,292	[2],[10]		30,448	[1],[5],[9]
Investment, Identifier [Axis]: Ministry Brands Holdings LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,864			2,864
Investments, at fair value, ending balance		2,850	[2],[10]				2,850	[2],[10]		2,864	[1],[5]
Investment, Identifier [Axis]: Ministry Brands Holdings LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(6)			(6)
Investments, at fair value, ending balance		(6)	[2],[10],[12]				(6)	[2],[10],[12]		(6)	[1],[5],[11]
Investment, Identifier [Axis]: Movement Holdings, LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			136			136
Investments, at fair value, ending balance		111	[2],[10],[25],[28]				111	[2],[10],[25],[28]		136	[1],[5]
Investment, Identifier [Axis]: Movement Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			841			841
Investments, at fair value, ending balance		837	[2],[10],[25],[28]				837	[2],[10],[25],[28]		841	[1],[5],[9]
Investment, Identifier [Axis]: Movement Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10],[25],[28]				0	[2],[10],[25],[28]		0	[1],[5]
Investment, Identifier [Axis]: Movement Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12],[25],[28]				0	[2],[10],[12],[25],[28]		0	[1],[5],[11]
Investment, Identifier [Axis]: NBG Acquisition Corp. and NBG-P Acquisition Corp., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[9],[15],[16],[17],[19]			33,004			33,004
Investments, at fair value, ending balance		32,497	[2],[10],[18],[20]				32,497	[2],[10],[18],[20]		33,004	[1],[9],[15],[16],[17],[19]
Investment, Identifier [Axis]: NBG Acquisition Corp. and NBG-P Acquisition Corp., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			767			767
Investments, at fair value, ending balance		756	[2],[10]				756	[2],[10]		767	[1],[5]
Investment, Identifier [Axis]: NBG Acquisition Corp. and NBG-P Acquisition Corp., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			292			292
Investments, at fair value, ending balance		414	[2],[10]				414	[2],[10]		292	[1],[5]
Investment, Identifier [Axis]: NDX Parent, LLC, Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			11			11
Investments, at fair value, ending balance		7	[2],[10]				7	[2],[10]		11	[1],[5]
Investment, Identifier [Axis]: NDX Parent, LLC, Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			82			82
Investments, at fair value, ending balance		56	[2],[10]				56	[2],[10]		82	[1],[5]
Investment, Identifier [Axis]: NSG Buyer, Inc., LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8]			3,616			3,616
Investments, at fair value, ending balance		3,658	[2],[10],[25]				3,658	[2],[10],[25]		3,616	[1],[5],[8]
Investment, Identifier [Axis]: NSG Buyer, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[16],[17]			34,589			34,589
Investments, at fair value, ending balance		37,020	[2],[10],[18]				37,020	[2],[10],[18]		34,589	[1],[5],[6],[16],[17]
Investment, Identifier [Axis]: NSG Buyer, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		145	[2],[10]				145	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: NSG Buyer, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: NSG Buyer, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,785			1,785
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		1,785	[1],[5]
Investment, Identifier [Axis]: NTI Connect, LLC, Senior secured
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,529			1,529
Investments, at fair value, ending balance		1,529	[2],[10],[18]				1,529	[2],[10],[18]		1,529	[1],[5],[9]
Investment, Identifier [Axis]: National Express Wash Parent Holdco, LLC, LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			134			134
Investments, at fair value, ending balance		156	[2],[10]				156	[2],[10]		134	[1],[5]
Investment, Identifier [Axis]: National Express Wash Parent Holdco, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			9,428			9,428
Investments, at fair value, ending balance		13,280	[2],[10]				13,280	[2],[10]		9,428	[1],[5],[16]
Investment, Identifier [Axis]: National Express Wash Parent Holdco, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			132			132
Investments, at fair value, ending balance		(23)	[2],[10],[12]				(23)	[2],[10],[12]		132	[1],[5]
Investment, Identifier [Axis]: National Express Wash Parent Holdco, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		(6)	[2],[10],[12]				(6)	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: National Express Wash Parent Holdco, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	685					685
Investment, Identifier [Axis]: Navex TopCo, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			5,382			5,382
Investments, at fair value, ending balance		5,356	[2],[10]				5,356	[2],[10]		5,382	[1],[5],[9]
Investment, Identifier [Axis]: Navex TopCo, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Naviga Inc., Senior secured
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[21]			48			48
Investments, at fair value, ending balance		64	[2],[10],[22]				64	[2],[10],[22]		48	[1],[5],[21]
Investment, Identifier [Axis]: Neptune Holdings, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			16,180			16,180
Investments, at fair value, ending balance		16,098	[2],[18]				16,098	[2],[18]		16,180	[1],[5],[15]
Investment, Identifier [Axis]: Neptune Holdings, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Net Health Acquisition Corp., LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,311			2,311
Investments, at fair value, ending balance		2,357	[2],[10]				2,357	[2],[10]		2,311	[1],[5]
Investment, Identifier [Axis]: Netsmart Technologies, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			50,812			50,812
Investments, at fair value, ending balance		52,019	[2],[10],[14]				52,019	[2],[10],[14]		50,812	[1],[5],[13]
Investment, Identifier [Axis]: Netsmart Technologies, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(70)			(70)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(70)	[1],[5],[11]
Investment, Identifier [Axis]: Netsmart Technologies, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(34)			(34)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(34)	[1],[5],[11]
Investment, Identifier [Axis]: Netwrix Corporation, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			18			18
Investments, at fair value, ending balance		20	[2],[10]				20	[2],[10]		18	[1],[5]
Investment, Identifier [Axis]: Netwrix Corporation, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[16]			7,975			7,975
Investments, at fair value, ending balance		7,935	[2],[10],[18]				7,935	[2],[10],[18]		7,975	[1],[5],[6],[16]
Investment, Identifier [Axis]: Netwrix Corporation, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		385	[2],[10]				385	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Netwrix Corporation, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			422			422
Investments, at fair value, ending balance		91	[2],[10]				91	[2],[10]		422	[1],[5]
Investment, Identifier [Axis]: Netwrix Corporation, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: New Look (Delaware) Corporation and NL1 AcquireCo, Inc., Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[31]			311			311
Investments, at fair value, ending balance	[1],[5],[7],[8],[31]									311
Investment, Identifier [Axis]: New Look (Delaware) Corporation and NL1 AcquireCo, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[9],[13],[31]			25,165			25,165
Investments, at fair value, ending balance	[1],[5],[7],[8],[9],[13],[31]									25,165
Investment, Identifier [Axis]: New Look (Delaware) Corporation and NL1 AcquireCo, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[7],[8],[9],[17]			5,646			5,646
Investments, at fair value, ending balance	[1],[7],[8],[9],[17]									5,646
Investment, Identifier [Axis]: New Look (Delaware) Corporation and NL1 AcquireCo, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[9],[17]			3,984			3,984
Investments, at fair value, ending balance	[1],[5],[7],[8],[9],[17]									3,984
Investment, Identifier [Axis]: New Look (Delaware) Corporation and NL1 AcquireCo, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[31]			1,576			1,576
Investments, at fair value, ending balance	[1],[5],[7],[8],[31]									1,576
Investment, Identifier [Axis]: New Look (Delaware) Corporation and NL1 AcquireCo, Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[31]			821			821
Investments, at fair value, ending balance	[1],[5],[7],[8],[31]									821
Investment, Identifier [Axis]: New Look (Delaware) Corporation and NL1 AcquireCo, Inc., One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[13]			125			125
Investments, at fair value, ending balance	[1],[5],[7],[8],[13]									125
Investment, Identifier [Axis]: New Look (Delaware) Corporation and NL1 AcquireCo, Inc., One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[31]			65			65
Investments, at fair value, ending balance	[1],[5],[7],[8],[31]									65
Investment, Identifier [Axis]: New Look (Delaware) Corporation and NL1 AcquireCo, Inc., One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[11]			(4)			(4)
Investments, at fair value, ending balance	[1],[5],[7],[8],[11]									(4)
Investment, Identifier [Axis]: New Look Corporation and New Look Vision Group Inc., Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[29],[32]	297					297
Investment, Identifier [Axis]: New Look Corporation and New Look Vision Group Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14],[25],[29],[32]	24,523					24,523
Investment, Identifier [Axis]: New Look Corporation and New Look Vision Group Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[18],[25],[29]	5,764					5,764
Investment, Identifier [Axis]: New Look Corporation and New Look Vision Group Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[18],[25],[29]	4,066					4,066
Investment, Identifier [Axis]: New Look Corporation and New Look Vision Group Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[29]	1,520					1,520
Investment, Identifier [Axis]: New Look Corporation and New Look Vision Group Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[29],[32]	792					792
Investment, Identifier [Axis]: New Look Corporation and New Look Vision Group Inc., One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[29],[32]	156					156
Investment, Identifier [Axis]: New Look Corporation and New Look Vision Group Inc., One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14],[25],[29]	129					129
Investment, Identifier [Axis]: New Look Corporation and New Look Vision Group Inc., One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12],[25],[29]	(2)					(2)
Investment, Identifier [Axis]: North Haven Falcon Buyer, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			7,285			7,285
Investments, at fair value, ending balance		5,513	[2],[10],[14],[22]				5,513	[2],[10],[14],[22]		7,285	[1],[5],[9],[13]
Investment, Identifier [Axis]: North Haven Falcon Buyer, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			1,220			1,220
Investments, at fair value, ending balance		921	[2],[10],[14],[22]				921	[2],[10],[14],[22]		1,220	[1],[5],[13]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1]			846			846
Investments, at fair value, ending balance		996	[2]				996	[2]		846	[1]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, Second lien 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		1,524	[2],[10],[14]				1,524	[2],[10],[14]		0	[1],[5],[11]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, Second lien 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			2,290			2,290
Investments, at fair value, ending balance		23	[2],[10]				23	[2],[10]		2,290	[1],[5],[13]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, Second lien 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			1,511			1,511
Investments, at fair value, ending balance		2,313	[2],[10],[14]				2,313	[2],[10],[14]		1,511	[1],[5],[13]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,568			1,568
Investments, at fair value, ending balance		158	[2],[10]				158	[2],[10]		1,568	[1],[5]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, Senior secured 10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			201			201
Investments, at fair value, ending balance		1,358	[2],[18]				1,358	[2],[18]		201	[1],[5]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, Senior secured 11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			100			100
Investments, at fair value, ending balance		200	[2],[10]				200	[2],[10]		100	[1],[5]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, Senior secured 12
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			166			166
Investments, at fair value, ending balance		100	[2],[10]				100	[2],[10]		166	[1],[5]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, Senior secured 13
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,287			2,287
Investments, at fair value, ending balance		673	[2],[10]				673	[2],[10]		2,287	[1],[5]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, Senior secured 14
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			485			485
Investments, at fair value, ending balance		2,270	[2],[10],[18]				2,270	[2],[10],[18]		485	[1],[5]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, Senior secured 15
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			910			910
Investments, at fair value, ending balance		482	[2],[10]				482	[2],[10]		910	[1],[5]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, Senior secured 16
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			689			689
Investments, at fair value, ending balance		906	[2],[10]				906	[2],[10]		689	[1],[5]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, Senior secured 17
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	685					685
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, Senior secured 18
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	759					759
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			158			158
Investments, at fair value, ending balance		1,557	[2],[10],[18]				1,557	[2],[10],[18]		158	[1],[5]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			285			285
Investments, at fair value, ending balance		333	[2],[10]				333	[2],[10]		285	[1],[5]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, Senior secured 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[6],[9],[15],[17]			12,315			12,315
Investments, at fair value, ending balance		283	[2],[10]				283	[2],[10]		12,315	[1],[6],[9],[15],[17]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, Senior secured 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,485			1,485
Investments, at fair value, ending balance		12,222	[2],[10]				12,222	[2],[10]		1,485	[1],[5]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, Senior secured 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,422			1,422
Investments, at fair value, ending balance		1,473	[2],[10],[18]				1,473	[2],[10],[18]		1,422	[1],[5]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, Senior secured 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[15],[17]			4,149			4,149
Investments, at fair value, ending balance		1,411	[2],[10]				1,411	[2],[10]		4,149	[1],[15],[17]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, Senior secured 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,374			1,374
Investments, at fair value, ending balance		4,117	[2],[18]				4,117	[2],[18]		1,374	[1],[5]
Investment, Identifier [Axis]: North Haven Stack Buyer, LLC, Senior secured 9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[15],[17]			1,369			1,369
Investments, at fair value, ending balance		1,364	[2],[10]				1,364	[2],[10]		1,369	[1],[15],[17]
Investment, Identifier [Axis]: Norvax, LLC, Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[19]			38,860			38,860
Investments, at fair value, ending balance	[1],[5],[8],[9],[19]									38,860
Investment, Identifier [Axis]: Norvax, LLC, Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9]			12,026			12,026
Investments, at fair value, ending balance	[1],[5],[8],[9]									12,026
Investment, Identifier [Axis]: OEConnection, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			10,288			10,288
Investments, at fair value, ending balance		10,237	[2],[18]				10,237	[2],[18]		10,288	[1],[5],[15]
Investment, Identifier [Axis]: OEConnection, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: OEConnection, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		1,786	[2],[10]				1,786	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: OEConnection, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,745			1,745
Investments, at fair value, ending balance	[1],[5],[9]									1,745
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			331			331
Investments, at fair value, ending balance	[1],[5]									331
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance	[1],[5]									0
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	1,736					1,736
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	329					329
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	34					34
Investment, Identifier [Axis]: Oakbridge Insurance Agency LLC, LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			412			412
Investments, at fair value, ending balance		492	[2],[10]				492	[2],[10]		412	[1],[5]
Investment, Identifier [Axis]: Oakbridge Insurance Agency LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			2,281			2,281
Investments, at fair value, ending balance		2,270	[2],[10]				2,270	[2],[10]		2,281	[1],[5],[9]
Investment, Identifier [Axis]: Oakbridge Insurance Agency LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			30			30
Investments, at fair value, ending balance		470	[2],[10]				470	[2],[10]		30	[1],[5]
Investment, Identifier [Axis]: Oakbridge Insurance Agency LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			91			91
Investments, at fair value, ending balance		28	[2],[10]				28	[2],[10]		91	[1],[5]
Investment, Identifier [Axis]: Onapsis, Inc., Virtual Forge GMBH and Onapsis GMBH, Warrant
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			20			20
Investments, at fair value, ending balance		16	[2],[10]				16	[2],[10]		20	[1],[5]
Investment, Identifier [Axis]: Onit, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	5,361					5,361
Investment, Identifier [Axis]: Onit, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(8)					(8)
Investment, Identifier [Axis]: Onit, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(24)					(24)
Investment, Identifier [Axis]: Onit, Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			128			128
Investments, at fair value, ending balance	[1],[5],[26]									128
Investment, Identifier [Axis]: Onit, Inc., Warrant
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			20			20
Investments, at fair value, ending balance		16	[2],[10]				16	[2],[10]		20	[1],[5]
Investment, Identifier [Axis]: Opening Day Borrower 111 LLC
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance				24,936			24,936		24,438	24,438
Gross additions							8,137			27,853
Gross reductions							(4,377)			(23,040)
Net change in unrealized appreciation (depreciation)							(3,775)			(4,272)
Net realized gain (loss)							0			(43)
Investments, at fair value, ending balance		24,921					24,921			24,936
Interest, dividend and fee income							78			629
Investment, Identifier [Axis]: Opening Day Borrower 111 LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			3,764			3,764
Investments, at fair value, ending balance		2,350	[2],[10]				2,350	[2],[10]		3,764	[1],[5]
Investment, Identifier [Axis]: Opening Day Borrower 111 LLC, One stop
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	3,761					3,761
Investment, Identifier [Axis]: Opening Day Borrower 111 LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance	[1],[5]									0
Investment, Identifier [Axis]: Opening Day Borrower 111 LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance	[1],[5]									0
Investment, Identifier [Axis]: Opening Day Borrower 111 LLC, Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			21,172			21,172
Investments, at fair value, ending balance		18,810	[2],[10]				18,810	[2],[10]		21,172	[1],[5]
Investment, Identifier [Axis]: Optimizely North America, Inc., Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,528			1,528
Investments, at fair value, ending balance		1,553	[2],[10]				1,553	[2],[10]		1,528	[1],[5]
Investment, Identifier [Axis]: Optimizely North America, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[9],[17],[19]			25,860			25,860
Investments, at fair value, ending balance		38,320	[2],[10]				38,320	[2],[10]		25,860	[1],[9],[17],[19]
Investment, Identifier [Axis]: Optimizely North America, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[31]			23,933			23,933
Investments, at fair value, ending balance		14,678	[2],[10],[25],[32]				14,678	[2],[10],[25],[32]		23,933	[1],[5],[8],[31]
Investment, Identifier [Axis]: Optimizely North America, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[6],[17],[19]			14,317			14,317
Investments, at fair value, ending balance		5,773	[2],[10],[25],[32]				5,773	[2],[10],[25],[32]		14,317	[1],[6],[17],[19]
Investment, Identifier [Axis]: Optimizely North America, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[6],[9]			7,956			7,956
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		7,956	[1],[6],[9]
Investment, Identifier [Axis]: Optimizely North America, Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance	[1],[5]									0
Investment, Identifier [Axis]: Orsay Bidco 1 B.V. and Sky Group Holding B.V., One stop
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11],[31],[33]			0			0
Investments, at fair value, ending balance	[1],[5],[8],[11],[31],[33]									0
Investment, Identifier [Axis]: Orsay Bidco 1 B.V. and Sky Group Holding B.V., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[32],[34]	2,102					2,102
Investment, Identifier [Axis]: Orsay Bidco 1 B.V. and Sky Group Holding B.V., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12],[25],[32],[34]	(58)					(58)
Investment, Identifier [Axis]: P&P Food Safety Holdings, Inc., Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			238			238
Investments, at fair value, ending balance		333	[2],[10]				333	[2],[10]		238	[1],[5]
Investment, Identifier [Axis]: P&P Food Safety Holdings, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[15],[16]			24,068			24,068
Investments, at fair value, ending balance		24,684	[2],[10],[18]				24,684	[2],[10],[18]		24,068	[1],[5],[6],[15],[16]
Investment, Identifier [Axis]: P&P Food Safety Holdings, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(6)			(6)
Investments, at fair value, ending balance		30	[2],[10]				30	[2],[10]		(6)	[1],[5],[11]
Investment, Identifier [Axis]: P&P Food Safety Holdings, Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			35			35
Investments, at fair value, ending balance		39	[2],[10]				39	[2],[10]		35	[1],[5]
Investment, Identifier [Axis]: PADI Holdco, Inc., LLC interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			868			868
Investments, at fair value, ending balance		1,424	[2],[10],[27]				1,424	[2],[10],[27]		868	[1],[5]
Investment, Identifier [Axis]: PADI Holdco, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[6],[17]			21,353			21,353
Investments, at fair value, ending balance		21,243	[2],[18]				21,243	[2],[18]		21,353	[1],[6],[17]
Investment, Identifier [Axis]: PADI Holdco, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[31]			20,130			20,130
Investments, at fair value, ending balance		19,456	[2],[10],[25],[32]				19,456	[2],[10],[25],[32]		20,130	[1],[5],[8],[31]
Investment, Identifier [Axis]: PADI Holdco, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			823			823
Investments, at fair value, ending balance		7,117	[2],[10],[25],[32]				7,117	[2],[10],[25],[32]		823	[1],[5]
Investment, Identifier [Axis]: PADI Holdco, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			170			170
Investments, at fair value, ending balance		818	[2],[10]				818	[2],[10]		170	[1],[5]
Investment, Identifier [Axis]: PADI Holdco, Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			214			214
Investments, at fair value, ending balance		500	[2],[10]				500	[2],[10]		214	[1],[5]
Investment, Identifier [Axis]: PADI Holdco, Inc., One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	169					169
Investment, Identifier [Axis]: PAS Parent Inc. One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[9],[15],[16],[17]			54,960			54,960
Investments, at fair value, ending balance	[1],[5],[6],[9],[15],[16],[17]									54,960
Investment, Identifier [Axis]: PAS Parent Inc., LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,618			1,618
Investments, at fair value, ending balance		1,820	[2],[10]				1,820	[2],[10]		1,618	[1],[5]
Investment, Identifier [Axis]: PAS Parent Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(39)			(39)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(39)	[1],[5],[11]
Investment, Identifier [Axis]: PAS Parent Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[18]	55,235					55,235
Investment, Identifier [Axis]: PAS Parent Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			124			124
Investments, at fair value, ending balance		8	[2],[10]				8	[2],[10]		124	[1],[5]
Investment, Identifier [Axis]: PAS Parent Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,608			2,608
Investments, at fair value, ending balance		2,929	[2],[10]				2,929	[2],[10]		2,608	[1],[5]
Investment, Identifier [Axis]: PAS Parent Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			299			299
Investments, at fair value, ending balance		329	[2],[10]				329	[2],[10]		299	[1],[5]
Investment, Identifier [Axis]: PB Group Holdings, LLC, LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			886			886
Investments, at fair value, ending balance		1,118	[2],[10]				1,118	[2],[10]		886	[1],[5]
Investment, Identifier [Axis]: PB Group Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			36,544			36,544
Investments, at fair value, ending balance		37,241	[2],[10],[14]				37,241	[2],[10],[14]		36,544	[1],[5],[13]
Investment, Identifier [Axis]: PB Group Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(22)			(22)
Investments, at fair value, ending balance		513	[2],[10]				513	[2],[10]		(22)	[1],[5],[11]
Investment, Identifier [Axis]: PDI TA Holdings, Inc, Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			5,660			5,660
Investments, at fair value, ending balance	[1],[5]									5,660
Investment, Identifier [Axis]: PDI TA Holdings, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,143			1,143
Investments, at fair value, ending balance		1,286	[2],[10]				1,286	[2],[10]		1,143	[1],[5],[9]
Investment, Identifier [Axis]: PDI TA Holdings, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		12	[2],[10]				12	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: PDI TA Holdings, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: PDI TA Holdings, Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	6,035					6,035
Investment, Identifier [Axis]: PDQ Intermediate, Inc., Subordinated debt
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			114			114
Investments, at fair value, ending balance		122	[2],[10],[14]				122	[2],[10],[14]		114	[1],[5],[13]
Investment, Identifier [Axis]: PHM NL SP Bidco B.V., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[13],[31],[33]			46,023			46,023
Investments, at fair value, ending balance		47,883	[2],[10],[14],[25],[28],[32]				47,883	[2],[10],[14],[25],[28],[32]		46,023	[1],[5],[8],[13],[31],[33]
Investment, Identifier [Axis]: PHM NL SP Bidco B.V., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[13],[33]			17,994			17,994
Investments, at fair value, ending balance		19,281	[2],[10],[14],[25],[28]				19,281	[2],[10],[14],[25],[28]		17,994	[1],[5],[8],[13],[33]
Investment, Identifier [Axis]: PHM NL SP Bidco B.V., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[13],[31],[33]			10,348			10,348
Investments, at fair value, ending balance		10,708	[2],[10],[14],[25],[28],[32]				10,708	[2],[10],[14],[25],[28],[32]		10,348	[1],[5],[8],[13],[31],[33]
Investment, Identifier [Axis]: PHM NL SP Bidco B.V., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[13],[31],[33]			4,807			4,807
Investments, at fair value, ending balance		5,002	[2],[10],[14],[25],[28],[32]				5,002	[2],[10],[14],[25],[28],[32]		4,807	[1],[5],[8],[13],[31],[33]
Investment, Identifier [Axis]: PING Identity Holding Corp., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			15,145			15,145
Investments, at fair value, ending balance		15,069	[2],[10]				15,069	[2],[10]		15,145	[1],[5],[9]
Investment, Identifier [Axis]: PING Identity Holding Corp., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: POY Holdings, LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			966			966
Investments, at fair value, ending balance		809	[2],[10]				809	[2],[10]		966	[1],[5]
Investment, Identifier [Axis]: POY Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[16],[17],[19]			28,489			28,489
Investments, at fair value, ending balance		28,343	[2],[10],[18],[20]				28,343	[2],[10],[18],[20]		28,489	[1],[5],[9],[16],[17],[19]
Investment, Identifier [Axis]: POY Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			3,703			3,703
Investments, at fair value, ending balance		3,684	[2],[10],[18]				3,684	[2],[10],[18]		3,703	[1],[5],[9]
Investment, Identifier [Axis]: POY Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			1,311			1,311
Investments, at fair value, ending balance		1,304	[2],[10],[18]				1,304	[2],[10],[18]		1,311	[1],[5],[15]
Investment, Identifier [Axis]: POY Holdings, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			873			873
Investments, at fair value, ending balance		869	[2],[10]				869	[2],[10]		873	[1],[5]
Investment, Identifier [Axis]: POY Holdings, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			651			651
Investments, at fair value, ending balance		648	[2],[10]				648	[2],[10]		651	[1],[5]
Investment, Identifier [Axis]: POY Holdings, LLC, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			291			291
Investments, at fair value, ending balance		289	[2],[10]				289	[2],[10]		291	[1],[5]
Investment, Identifier [Axis]: POY Holdings, LLC, One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			31			31
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		31	[1],[5]
Investment, Identifier [Axis]: POY Holdings, LLC, One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: PPV Intermediate Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[15],[17]			14,189			14,189
Investments, at fair value, ending balance		14,118	[2],[10],[18]				14,118	[2],[10],[18]		14,189	[1],[5],[9],[15],[17]
Investment, Identifier [Axis]: PPV Intermediate Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			9,108			9,108
Investments, at fair value, ending balance		9,799	[2],[10],[14]				9,799	[2],[10],[14]		9,108	[1],[5],[13]
Investment, Identifier [Axis]: PPV Intermediate Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			1,799			1,799
Investments, at fair value, ending balance		5,515	[2],[10]				5,515	[2],[10]		1,799	[1],[5],[13]
Investment, Identifier [Axis]: PPV Intermediate Holdings, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			416			416
Investments, at fair value, ending balance		1,926	[2],[10],[14]				1,926	[2],[10],[14]		416	[1],[5],[13]
Investment, Identifier [Axis]: PPV Intermediate Holdings, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			76			76
Investments, at fair value, ending balance		445	[2],[10],[14]				445	[2],[10],[14]		76	[1],[5],[13]
Investment, Identifier [Axis]: PPV Intermediate Holdings, LLC, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			75			75
Investments, at fair value, ending balance		81	[2],[10],[14]				81	[2],[10],[14]		75	[1],[5],[13]
Investment, Identifier [Axis]: PPV Intermediate Holdings, LLC, One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		81	[2],[10],[14]				81	[2],[10],[14]		0	[1],[5],[11]
Investment, Identifier [Axis]: PPV Intermediate Holdings, LLC, One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(70)			(70)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(70)	[1],[5],[11]
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			771			771
Investments, at fair value, ending balance		710	[2],[10]				710	[2],[10]		771	[1],[5]
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			34,892			34,892
Investments, at fair value, ending balance		34,629	[2],[10],[18]				34,629	[2],[10],[18]		34,892	[1],[5],[15]
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			4,292			4,292
Investments, at fair value, ending balance		7,853	[2],[10]				7,853	[2],[10]		4,292	[1],[5]
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			52			52
Investments, at fair value, ending balance		66	[2],[10]				66	[2],[10]		52	[1],[5]
Investment, Identifier [Axis]: PSC Parent, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			5,505			5,505
Investments, at fair value, ending balance	[1],[5],[15]									5,505
Investment, Identifier [Axis]: PSC Parent, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			377			377
Investments, at fair value, ending balance	[1],[5]									377
Investment, Identifier [Axis]: PSC Parent, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance	[1],[5],[11]									0
Investment, Identifier [Axis]: PSC Parent, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			917			917
Investments, at fair value, ending balance	[1],[5]									917
Investment, Identifier [Axis]: PSC Parent, Inc.., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[18]	5,478					5,478
Investment, Identifier [Axis]: PSC Parent, Inc.., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	497					497
Investment, Identifier [Axis]: PSC Parent, Inc.., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	510					510
Investment, Identifier [Axis]: PSC Parent, Inc.., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	913					913
Investment, Identifier [Axis]: PT Intermediate Holdings III, LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,879			1,879
Investments, at fair value, ending balance		1,874	[2],[10]				1,874	[2],[10]		1,879	[1],[5]
Investment, Identifier [Axis]: PT Intermediate Holdings III, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			12,234			12,234
Investments, at fair value, ending balance	[1],[5],[9],[13]									12,234
Investment, Identifier [Axis]: PT Intermediate Holdings III, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance	[1],[5],[11]									0
Investment, Identifier [Axis]: PT Intermediate Holdings III, LLC., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14]	12,342					12,342
Investment, Identifier [Axis]: PT Intermediate Holdings III, LLC., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: Packaging Coordinators Midco, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	5,193					5,193
Investment, Identifier [Axis]: Packaging Coordinators Midco, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(8)					(8)
Investment, Identifier [Axis]: Packaging Coordinators Midco, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(32)					(32)
Investment, Identifier [Axis]: Packaging Coordinators Midco, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(187)					(187)
Investment, Identifier [Axis]: Packaging Coordinators Midco, Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(1)					(1)
Investment, Identifier [Axis]: Panzura, LLC, LLC Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance	[1],[5]									0
Investment, Identifier [Axis]: Panzura, LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	0					0
Investment, Identifier [Axis]: Panzura, LLC, One stop
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			98			98
Investments, at fair value, ending balance		112	[2],[10],[14]				112	[2],[10],[14]		98	[1],[5],[13]
Investment, Identifier [Axis]: Pareto Health Intermediate Holdings, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			22,115			22,115
Investments, at fair value, ending balance		74,461	[2],[10],[18]				74,461	[2],[10],[18]		22,115	[1],[5],[16]
Investment, Identifier [Axis]: Pareto Health Intermediate Holdings, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			7,372			7,372
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		7,372	[1],[5]
Investment, Identifier [Axis]: Pareto Health Intermediate Holdings, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[16]			15,368			15,368
Investments, at fair value, ending balance		15,366	[2],[10]				15,366	[2],[10]		15,368	[1],[5],[9],[16]
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			3,141			3,141
Investments, at fair value, ending balance		3,141	[2],[10]				3,141	[2],[10]		3,141	[1],[5]
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			35			35
Investments, at fair value, ending balance		2,399	[2],[10]				2,399	[2],[10]		35	[1],[5]
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,447			1,447
Investments, at fair value, ending balance		107	[2],[10]				107	[2],[10]		1,447	[1],[5]
Investment, Identifier [Axis]: People Corporation, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[9],[31]			24,688			24,688
Investments, at fair value, ending balance		23,149	[2],[10],[25],[29],[32]				23,149	[2],[10],[25],[29],[32]		24,688	[1],[5],[7],[8],[9],[31]
Investment, Identifier [Axis]: People Corporation, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[31]			20,716			20,716
Investments, at fair value, ending balance		19,428	[2],[10],[25],[29],[32]				19,428	[2],[10],[25],[29],[32]		20,716	[1],[5],[7],[8],[31]
Investment, Identifier [Axis]: People Corporation, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[31]			8,101			8,101
Investments, at fair value, ending balance		8,922	[2],[10],[25],[29],[32]				8,922	[2],[10],[25],[29],[32]		8,101	[1],[5],[7],[8],[31]
Investment, Identifier [Axis]: People Corporation, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[31]			6,802			6,802
Investments, at fair value, ending balance		7,598	[2],[10],[25],[29],[32]				7,598	[2],[10],[25],[29],[32]		6,802	[1],[5],[7],[8],[31]
Investment, Identifier [Axis]: People Corporation, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[31]			71			71
Investments, at fair value, ending balance		180	[2],[10],[25],[29],[32]				180	[2],[10],[25],[29],[32]		71	[1],[5],[7],[8],[31]
Investment, Identifier [Axis]: People Corporation, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12],[25],[29],[32]	0					0
Investment, Identifier [Axis]: Personify, Inc., LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,303			2,303
Investments, at fair value, ending balance		2,139	[2],[10]				2,139	[2],[10]		2,303	[1],[5]
Investment, Identifier [Axis]: Personify, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[15],[17]			13,866			13,866
Investments, at fair value, ending balance		18,577	[2],[10]				18,577	[2],[10]		13,866	[1],[5],[6],[15],[17]
Investment, Identifier [Axis]: Personify, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[16],[17]			9,810			9,810
Investments, at fair value, ending balance		13,770	[2],[18]				13,770	[2],[18]		9,810	[1],[16],[17]
Investment, Identifier [Axis]: Personify, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		9,755	[2],[10],[18]				9,755	[2],[10],[18]		0	[1],[5]
Investment, Identifier [Axis]: Personify, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: Pet Holdings ULC, LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[7],[8],[26]			657			657
Investments, at fair value, ending balance		633	[2],[10],[25],[27],[29]				633	[2],[10],[25],[27],[29]		657	[1],[5],[7],[8],[26]
Investment, Identifier [Axis]: PetVet Care Centers LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			4,503			4,503
Investments, at fair value, ending balance		4,480	[2],[10],[18]				4,480	[2],[10],[18]		4,503	[1],[5],[15]
Investment, Identifier [Axis]: PetVet Care Centers LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(4)			(4)
Investments, at fair value, ending balance		(4)	[2],[10],[12]				(4)	[2],[10],[12]		(4)	[1],[5],[11]
Investment, Identifier [Axis]: PetVet Care Centers LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Pineapple German Bidco GMBH, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[13],[31],[45]			1,042			1,042
Investments, at fair value, ending balance		15,046	[2],[10],[14],[25],[46]				15,046	[2],[10],[14],[25],[46]		1,042	[1],[5],[8],[13],[31],[45]
Investment, Identifier [Axis]: Pineapple German Bidco GMBH, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[13],[31],[45]			247			247
Investments, at fair value, ending balance		4,886	[2],[10],[14],[25],[32],[46]				4,886	[2],[10],[14],[25],[32],[46]		247	[1],[5],[8],[13],[31],[45]
Investment, Identifier [Axis]: Pineapple German Bidco GMBH, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[13],[31],[45]			72			72
Investments, at fair value, ending balance		1,055	[2],[10],[14],[25],[32],[46]				1,055	[2],[10],[14],[25],[32],[46]		72	[1],[5],[8],[13],[31],[45]
Investment, Identifier [Axis]: Pineapple German Bidco GMBH, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14],[25],[32],[46]	326					326
Investment, Identifier [Axis]: Pineapple German Bidco GMBH, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14],[25],[46]	78					78
Investment, Identifier [Axis]: Pineapple German Bidco GMBH, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14],[25],[32],[46]	72					72
Investment, Identifier [Axis]: Pinnacle Treatment Centers, Inc., LLC interest 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			866			866
Investments, at fair value, ending balance		901	[2],[10]				901	[2],[10]		866	[1],[5]
Investment, Identifier [Axis]: Pinnacle Treatment Centers, Inc., LLC interest 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,036			1,036
Investments, at fair value, ending balance		119	[2],[10]				119	[2],[10]		1,036	[1],[5]
Investment, Identifier [Axis]: Pinnacle Treatment Centers, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			18,333			18,333
Investments, at fair value, ending balance		18,233	[2],[18]				18,233	[2],[18]		18,333	[1],[5]
Investment, Identifier [Axis]: Pinnacle Treatment Centers, Inc., One stop 10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			103			103
Investments, at fair value, ending balance		178	[2],[10]				178	[2],[10]		103	[1],[5]
Investment, Identifier [Axis]: Pinnacle Treatment Centers, Inc., One stop 11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			290			290
Investments, at fair value, ending balance		102	[2],[10]				102	[2],[10]		290	[1],[5]
Investment, Identifier [Axis]: Pinnacle Treatment Centers, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			12,277			12,277
Investments, at fair value, ending balance		12,212	[2],[10],[18]				12,212	[2],[10],[18]		12,277	[1],[5]
Investment, Identifier [Axis]: Pinnacle Treatment Centers, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,467			2,467
Investments, at fair value, ending balance		2,455	[2],[10]				2,455	[2],[10]		2,467	[1],[5]
Investment, Identifier [Axis]: Pinnacle Treatment Centers, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,383			2,383
Investments, at fair value, ending balance		2,372	[2],[10]				2,372	[2],[10]		2,383	[1],[5]
Investment, Identifier [Axis]: Pinnacle Treatment Centers, Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,508			1,508
Investments, at fair value, ending balance		1,499	[2],[10]				1,499	[2],[10]		1,508	[1],[5]
Investment, Identifier [Axis]: Pinnacle Treatment Centers, Inc., One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,368			1,368
Investments, at fair value, ending balance		1,361	[2],[10]				1,361	[2],[10]		1,368	[1],[5]
Investment, Identifier [Axis]: Pinnacle Treatment Centers, Inc., One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			680			680
Investments, at fair value, ending balance		677	[2],[10]				677	[2],[10]		680	[1],[5]
Investment, Identifier [Axis]: Pinnacle Treatment Centers, Inc., One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			533			533
Investments, at fair value, ending balance		530	[2],[10]				530	[2],[10]		533	[1],[5]
Investment, Identifier [Axis]: Pinnacle Treatment Centers, Inc., One stop 9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			180			180
Investments, at fair value, ending balance		522	[2],[10]				522	[2],[10]		180	[1],[5]
Investment, Identifier [Axis]: PlanSource Holdings, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			14,091			14,091
Investments, at fair value, ending balance		14,234	[2],[10],[18]				14,234	[2],[10],[18]		14,091	[1],[5],[9]
Investment, Identifier [Axis]: PlanSource Holdings, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			2,391			2,391
Investments, at fair value, ending balance		2,416	[2],[10]				2,416	[2],[10]		2,391	[1],[5],[9]
Investment, Identifier [Axis]: PlanSource Holdings, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			689			689
Investments, at fair value, ending balance		695	[2],[10]				695	[2],[10]		689	[1],[5]
Investment, Identifier [Axis]: PlanSource Holdings, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(3)			(3)
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		(3)	[1],[5],[11]
Investment, Identifier [Axis]: Plasma Buyer LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			7,795			7,795
Investments, at fair value, ending balance		7,915	[2],[10]				7,915	[2],[10]		7,795	[1],[5],[9]
Investment, Identifier [Axis]: Plasma Buyer LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			173			173
Investments, at fair value, ending balance		299	[2],[10]				299	[2],[10]		173	[1],[5]
Investment, Identifier [Axis]: Plasma Buyer LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			60			60
Investments, at fair value, ending balance		90	[2],[10]				90	[2],[10]		60	[1],[5]
Investment, Identifier [Axis]: Pluralsight, LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			3,663			3,663
Investments, at fair value, ending balance		4,330	[2],[10]				4,330	[2],[10]		3,663	[1],[5]
Investment, Identifier [Axis]: Pluralsight, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			5,725			5,725
Investments, at fair value, ending balance		6,285	[2],[10],[14]				6,285	[2],[10],[14]		5,725	[1],[5],[13]
Investment, Identifier [Axis]: Pluralsight, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			3,856			3,856
Investments, at fair value, ending balance		3,964	[2],[10],[14]				3,964	[2],[10],[14]		3,856	[1],[5],[13]
Investment, Identifier [Axis]: Pluralsight, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			1,928			1,928
Investments, at fair value, ending balance		1,982	[2],[10],[14]				1,982	[2],[10],[14]		1,928	[1],[5],[13]
Investment, Identifier [Axis]: Pluralsight, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(30)			(30)
Investments, at fair value, ending balance		(10)	[2],[10],[12]				(10)	[2],[10],[12]		(30)	[1],[5],[11]
Investment, Identifier [Axis]: Pluralsight, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(75)			(75)
Investments, at fair value, ending balance		(25)	[2],[10],[12]				(25)	[2],[10],[12]		(75)	[1],[5],[11]
Investment, Identifier [Axis]: Polk Acquisition Corp., LP Interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance	[1],[5]									0
Investment, Identifier [Axis]: Polk Acquisition Corp., LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	0					0
Investment, Identifier [Axis]: Polk Acquisition Corp., Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[13],[17]			17,297			17,297
Investments, at fair value, ending balance	[1],[5],[6],[13],[17]									17,297
Investment, Identifier [Axis]: Polk Acquisition Corp., Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			102			102
Investments, at fair value, ending balance	[1],[5],[13]									102
Investment, Identifier [Axis]: Polk Acquisition Corp., Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			108			108
Investments, at fair value, ending balance	[1],[5],[13]									108
Investment, Identifier [Axis]: Power Grid Holdings, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,425			1,425
Investments, at fair value, ending balance		1,418	[2],[10]				1,418	[2],[10]		1,425	[1],[5],[9]
Investment, Identifier [Axis]: Power Grid Holdings, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Premise Health Holding Corp., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,391			1,391
Investments, at fair value, ending balance		1,385	[2],[10]				1,385	[2],[10]		1,391	[1],[5],[9]
Investment, Identifier [Axis]: Premise Health Holding Corp., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: ProcessUnity Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[19]			6,014			6,014
Investments, at fair value, ending balance		6,014	[2],[10],[20]				6,014	[2],[10],[20]		6,014	[1],[5],[19]
Investment, Identifier [Axis]: ProcessUnity Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			2,864			2,864
Investments, at fair value, ending balance		4,240	[2],[10]				4,240	[2],[10]		2,864	[1],[5],[9]
Investment, Identifier [Axis]: ProcessUnity Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,203			1,203
Investments, at fair value, ending balance		2,864	[2],[10]				2,864	[2],[10]		1,203	[1],[5]
Investment, Identifier [Axis]: ProcessUnity Holdings, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			90			90
Investments, at fair value, ending balance		1,203	[2],[10]				1,203	[2],[10]		90	[1],[5]
Investment, Identifier [Axis]: ProcessUnity Holdings, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	0					0
Investment, Identifier [Axis]: Procure Acquireco, Inc., LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,150			1,150
Investments, at fair value, ending balance		1,236	[2],[10]				1,236	[2],[10]		1,150	[1],[5]
Investment, Identifier [Axis]: Procure Acquireco, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15],[16],[17]			24,925			24,925
Investments, at fair value, ending balance		24,796	[2],[10],[18]				24,796	[2],[10],[18]		24,925	[1],[5],[15],[16],[17]
Investment, Identifier [Axis]: Procure Acquireco, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,145			1,145
Investments, at fair value, ending balance		1,140	[2],[10]				1,140	[2],[10]		1,145	[1],[5]
Investment, Identifier [Axis]: Procure Acquireco, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Procure Acquireco, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: Procure Acquireco, Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	3,479					3,479
Investment, Identifier [Axis]: Profile Products LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			8,600			8,600
Investments, at fair value, ending balance	[1],[5],[9]									8,600
Investment, Identifier [Axis]: Profile Products LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9]			1,743			1,743
Investments, at fair value, ending balance	[1],[5],[8],[9]									1,743
Investment, Identifier [Axis]: Profile Products LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			68			68
Investments, at fair value, ending balance	[1],[5]									68
Investment, Identifier [Axis]: Profile Products LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(4)			(4)
Investments, at fair value, ending balance	[1],[5],[11]									(4)
Investment, Identifier [Axis]: Profile Products LLC., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	8,916					8,916
Investment, Identifier [Axis]: Profile Products LLC., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25]	1,807					1,807
Investment, Identifier [Axis]: Profile Products LLC., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	84					84
Investment, Identifier [Axis]: Profile Products LLC., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	6					6
Investment, Identifier [Axis]: Project Alpha Intermediate Holdings, Inc., Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			755			755
Investments, at fair value, ending balance		808	[2],[10]				808	[2],[10]		755	[1],[5]
Investment, Identifier [Axis]: Project Alpha Intermediate Holdings, Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			1,646			1,646
Investments, at fair value, ending balance		1,679	[2],[10],[27]				1,679	[2],[10],[27]		1,646	[1],[5],[26]
Investment, Identifier [Axis]: Project Nike Purchaser, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			33,529			33,529
Investments, at fair value, ending balance		33,694	[2],[10],[18]				33,694	[2],[10],[18]		33,529	[1],[5],[16]
Investment, Identifier [Axis]: Project Nike Purchaser, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			742			742
Investments, at fair value, ending balance		746	[2],[10]				746	[2],[10]		742	[1],[5],[9]
Investment, Identifier [Axis]: Project Nike Purchaser, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			246			246
Investments, at fair value, ending balance		236	[2],[10]				236	[2],[10]		246	[1],[5]
Investment, Identifier [Axis]: Project Power Buyer, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[9],[15],[17]			53,171			53,171
Investments, at fair value, ending balance	[1],[5],[6],[9],[15],[17]									53,171
Investment, Identifier [Axis]: Project Power Buyer, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance	[1],[5]									0
Investment, Identifier [Axis]: Provenance Buyer LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[9],[15],[17]			19,756			19,756
Investments, at fair value, ending balance		19,655	[2],[10],[18]				19,655	[2],[10],[18]		19,756	[1],[5],[6],[9],[15],[17]
Investment, Identifier [Axis]: Provenance Buyer LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[16],[17]			13,309			13,309
Investments, at fair value, ending balance		13,242	[2],[10],[18]				13,242	[2],[10],[18]		13,309	[1],[16],[17]
Investment, Identifier [Axis]: Provenance Buyer LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			112			112
Investments, at fair value, ending balance		200	[2],[10]				200	[2],[10]		112	[1],[5]
Investment, Identifier [Axis]: Purfoods, LLC, LLC interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			4,991			4,991
Investments, at fair value, ending balance		5,975	[2],[10]				5,975	[2],[10]		4,991	[1],[5]
Investment, Identifier [Axis]: Pyramid Healthcare Acquisition Corp, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			385			385
Investments, at fair value, ending balance	[1],[5]									385
Investment, Identifier [Axis]: Pyramid Healthcare Acquisition Corp., Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	347					347
Investment, Identifier [Axis]: Pyramid Healthcare Acquisition Corp., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16],[17]			25,098			25,098
Investments, at fair value, ending balance		24,969	[2],[10],[18]				24,969	[2],[10],[18]		25,098	[1],[5],[16],[17]
Investment, Identifier [Axis]: Pyramid Healthcare Acquisition Corp., One stop 10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			202			202
Investments, at fair value, ending balance		201	[2],[10]				201	[2],[10]		202	[1],[5],[9]
Investment, Identifier [Axis]: Pyramid Healthcare Acquisition Corp., One stop 11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			79			79
Investments, at fair value, ending balance		79	[2],[10]				79	[2],[10]		79	[1],[5],[9]
Investment, Identifier [Axis]: Pyramid Healthcare Acquisition Corp., One stop 12
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	40					40
Investment, Identifier [Axis]: Pyramid Healthcare Acquisition Corp., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,595			2,595
Investments, at fair value, ending balance		2,581	[2],[10],[18]				2,581	[2],[10],[18]		2,595	[1],[5]
Investment, Identifier [Axis]: Pyramid Healthcare Acquisition Corp., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			2,170			2,170
Investments, at fair value, ending balance		2,158	[2],[10],[18]				2,158	[2],[10],[18]		2,170	[1],[5],[9]
Investment, Identifier [Axis]: Pyramid Healthcare Acquisition Corp., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,192			1,192
Investments, at fair value, ending balance		1,187	[2],[10]				1,187	[2],[10]		1,192	[1],[5],[9]
Investment, Identifier [Axis]: Pyramid Healthcare Acquisition Corp., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,092			1,092
Investments, at fair value, ending balance		1,086	[2],[10]				1,086	[2],[10]		1,092	[1],[5]
Investment, Identifier [Axis]: Pyramid Healthcare Acquisition Corp., One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			738			738
Investments, at fair value, ending balance		733	[2],[10]				733	[2],[10]		738	[1],[5],[9]
Investment, Identifier [Axis]: Pyramid Healthcare Acquisition Corp., One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			245			245
Investments, at fair value, ending balance		244	[2],[10]				244	[2],[10]		245	[1],[5],[9]
Investment, Identifier [Axis]: Pyramid Healthcare Acquisition Corp., One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			216			216
Investments, at fair value, ending balance		215	[2],[10]				215	[2],[10]		216	[1],[5],[9]
Investment, Identifier [Axis]: Pyramid Healthcare Acquisition Corp., One stop 9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			202			202
Investments, at fair value, ending balance		201	[2],[10]				201	[2],[10]		202	[1],[5],[9]
Investment, Identifier [Axis]: QAD, Inc., Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: QAD, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[16]			43,261			43,261
Investments, at fair value, ending balance		43,040	[2],[10],[18]				43,040	[2],[10],[18]		43,261	[1],[5],[9],[16]
Investment, Identifier [Axis]: QAD, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: QAD, Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			1,147			1,147
Investments, at fair value, ending balance		1,263	[2],[10],[27]				1,263	[2],[10],[27]		1,147	[1],[5],[26]
Investment, Identifier [Axis]: QF Holdings, Inc., One stop
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			931			931
Investments, at fair value, ending balance		929	[2],[10]				929	[2],[10]		931	[1],[5]
Investment, Identifier [Axis]: Quant Buyer, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			7,406			7,406
Investments, at fair value, ending balance		7,368	[2],[10],[18]				7,368	[2],[10],[18]		7,406	[1],[5],[9]
Investment, Identifier [Axis]: Quant Buyer, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			4,360			4,360
Investments, at fair value, ending balance		4,450	[2],[10],[18]				4,450	[2],[10],[18]		4,360	[1],[5],[9]
Investment, Identifier [Axis]: Quant Buyer, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			3,015			3,015
Investments, at fair value, ending balance		4,338	[2],[10],[18]				4,338	[2],[10],[18]		3,015	[1],[5],[15]
Investment, Identifier [Axis]: Quant Buyer, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		100	[2],[10]				100	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Quant Buyer, Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Quick Quack Car Wash Holdings, LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			226			226
Investments, at fair value, ending balance		247	[2],[10]				247	[2],[10]		226	[1],[5]
Investment, Identifier [Axis]: Quick Quack Car Wash Holdings, LLC, LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,143			1,143
Investments, at fair value, ending balance		1,292	[2],[10]				1,292	[2],[10]		1,143	[1],[5]
Investment, Identifier [Axis]: Quick Quack Car Wash Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			3,608			3,608
Investments, at fair value, ending balance		4,481	[2],[10]				4,481	[2],[10]		3,608	[1],[5]
Investment, Identifier [Axis]: Quick Quack Car Wash Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			140			140
Investments, at fair value, ending balance		140	[2],[10]				140	[2],[10]		140	[1],[5]
Investment, Identifier [Axis]: Quick Quack Car Wash Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: RJW Group Holdings, Inc., LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	4,370					4,370
Investment, Identifier [Axis]: RJW Group Holdings, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	45,950					45,950
Investment, Identifier [Axis]: RJW Group Holdings, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(34)					(34)
Investment, Identifier [Axis]: RPL Bidco Limited, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30],[31]			6,052			6,052
Investments, at fair value, ending balance		5,845	[2],[10],[25],[28],[32]				5,845	[2],[10],[25],[28],[32]		6,052	[1],[5],[8],[9],[30],[31]
Investment, Identifier [Axis]: RPL Bidco Limited, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			27,932			27,932
Investments, at fair value, ending balance		26,979	[2],[10],[25],[28],[32]				26,979	[2],[10],[25],[28],[32]		27,932	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: RPL Bidco Limited, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30],[31]			12,173			12,173
Investments, at fair value, ending balance		10,997	[2],[10],[25],[28],[32]				10,997	[2],[10],[25],[28],[32]		12,173	[1],[5],[8],[9],[30],[31]
Investment, Identifier [Axis]: RPL Bidco Limited, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30],[31]			2,955			2,955
Investments, at fair value, ending balance		2,670	[2],[10],[25],[28],[32]				2,670	[2],[10],[25],[28],[32]		2,955	[1],[5],[8],[9],[30],[31]
Investment, Identifier [Axis]: RPL Bidco Limited, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			0			0
Investments, at fair value, ending balance		0	[2],[10],[25],[28],[32]				0	[2],[10],[25],[28],[32]		0	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: RW AM Holdco LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16],[17]			24,523			24,523
Investments, at fair value, ending balance		22,823	[2],[10]				22,823	[2],[10]		24,523	[1],[5],[16],[17]
Investment, Identifier [Axis]: RW AM Holdco LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(22)			(22)
Investments, at fair value, ending balance		(40)	[2],[10],[12]				(40)	[2],[10],[12]		(22)	[1],[5],[11]
Investment, Identifier [Axis]: Radiance Borrower, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			21,558			21,558
Investments, at fair value, ending balance		21,752	[2],[10],[14]				21,752	[2],[10],[14]		21,558	[1],[5],[13]
Investment, Identifier [Axis]: Radiance Borrower, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			410			410
Investments, at fair value, ending balance		205	[2],[10]				205	[2],[10]		410	[1],[5]
Investment, Identifier [Axis]: Radiology Partners, Inc., LLC interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			340			340
Investments, at fair value, ending balance		333	[2],[10]				333	[2],[10]		340	[1],[5]
Investment, Identifier [Axis]: Radiology Partners, Inc., LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			86			86
Investments, at fair value, ending balance		84	[2],[10]				84	[2],[10]		86	[1],[5]
Investment, Identifier [Axis]: Radwell Parent, LLC, LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			465			465
Investments, at fair value, ending balance		396	[2],[10]				396	[2],[10]		465	[1],[5]
Investment, Identifier [Axis]: Radwell Parent, LLC, One stop
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(7)					(7)
Investment, Identifier [Axis]: Radwell Parent, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[17],[19]			33,947			33,947
Investments, at fair value, ending balance	[1],[5],[17],[19]									33,947
Investment, Identifier [Axis]: Radwell Parent, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[16]			32,083			32,083
Investments, at fair value, ending balance	[1],[5],[9],[16]									32,083
Investment, Identifier [Axis]: Radwell Parent, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			235			235
Investments, at fair value, ending balance	[1],[5]									235
Investment, Identifier [Axis]: Radwell Parent, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			540			540
Investments, at fair value, ending balance	[1],[5]									540
Investment, Identifier [Axis]: Radwell Parent, LLC., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[18],[20]	33,774					33,774
Investment, Identifier [Axis]: Radwell Parent, LLC., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[18]	32,462					32,462
Investment, Identifier [Axis]: Radwell Parent, LLC., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	318					318
Investment, Identifier [Axis]: Rainforest Bidco Limited, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[13],[30],[31]			19,962			19,962
Investments, at fair value, ending balance		19,947	[2],[10],[14],[25],[28],[32]				19,947	[2],[10],[14],[25],[28],[32]		19,962	[1],[5],[8],[13],[30],[31]
Investment, Identifier [Axis]: Rainforest Bidco Limited, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[13],[30]			3,526			3,526
Investments, at fair value, ending balance		3,649	[2],[10],[14],[25],[28]				3,649	[2],[10],[14],[25],[28]		3,526	[1],[5],[8],[13],[30]
Investment, Identifier [Axis]: Rainforest Bidco Limited, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[13],[30],[31]			2,159			2,159
Investments, at fair value, ending balance		2,120	[2],[10],[14],[25],[28],[32]				2,120	[2],[10],[14],[25],[28],[32]		2,159	[1],[5],[8],[13],[30],[31]
Investment, Identifier [Axis]: Rainforest Bidco Limited, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[13],[30],[31]			1,467			1,467
Investments, at fair value, ending balance		1,466	[2],[10],[14],[25],[28],[32]				1,466	[2],[10],[14],[25],[28],[32]		1,467	[1],[5],[8],[13],[30],[31]
Investment, Identifier [Axis]: Reaction Biology Corporation
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance				0			0
Gross additions							8,192
Gross reductions							0
Net change in unrealized appreciation (depreciation)							(3)
Net realized gain (loss)							0
Investments, at fair value, ending balance		8,189					8,189			0
Interest, dividend and fee income							13
Investment, Identifier [Axis]: Reaction Biology Corporation, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			4			4
Investments, at fair value, ending balance		4,977	[2],[10]				4,977	[2],[10]		4	[1],[5]
Investment, Identifier [Axis]: Reaction Biology Corporation, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[17],[21]			6,622			6,622
Investments, at fair value, ending balance		2,793	[2],[10],[14]				2,793	[2],[10],[14]		6,622	[1],[5],[13],[17],[21]
Investment, Identifier [Axis]: Reaction Biology Corporation, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[21]			2,203			2,203
Investments, at fair value, ending balance		419	[2],[10],[14]				419	[2],[10],[14]		2,203	[1],[5],[13],[21]
Investment, Identifier [Axis]: Reaction Biology Corporation, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[21]			1,465			1,465
Investments, at fair value, ending balance	[1],[5],[13],[21]									1,465
Investment, Identifier [Axis]: Reaction Biology Corporation, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[21]			236			236
Investments, at fair value, ending balance	[1],[5],[13],[21]									236
Investment, Identifier [Axis]: Recordxtechnologies, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[9],[15],[17]			18,874			18,874
Investments, at fair value, ending balance		18,777	[2],[10],[18]				18,777	[2],[10],[18]		18,874	[1],[9],[15],[17]
Investment, Identifier [Axis]: Recordxtechnologies, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,769			1,769
Investments, at fair value, ending balance		12,490	[2],[18]				12,490	[2],[18]		1,769	[1],[5]
Investment, Identifier [Axis]: Recordxtechnologies, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2			2
Investments, at fair value, ending balance		1,760	[2],[10]				1,760	[2],[10]		2	[1],[5]
Investment, Identifier [Axis]: Recordxtechnologies, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			894			894
Investments, at fair value, ending balance		889	[2],[10]				889	[2],[10]		894	[1],[5],[9]
Investment, Identifier [Axis]: Recordxtechnologies, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			12,553			12,553
Investments, at fair value, ending balance		2	[2],[10]				2	[2],[10]		12,553	[1],[5]
Investment, Identifier [Axis]: RegEd Aquireco, LLC, LP interest 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			163			163
Investments, at fair value, ending balance		214	[2],[10]				214	[2],[10]		163	[1],[5]
Investment, Identifier [Axis]: RegEd Aquireco, LLC, LP interest 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: RegEd Aquireco, LLC, Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			32			32
Investments, at fair value, ending balance		35	[2],[10]				35	[2],[10]		32	[1],[5]
Investment, Identifier [Axis]: ReliaQuest Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			11,710			11,710
Investments, at fair value, ending balance		11,928	[2],[10],[14]				11,928	[2],[10],[14]		11,710	[1],[5],[9],[13]
Investment, Identifier [Axis]: ReliaQuest Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: ReliaQuest Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Revalize, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15],[19]			19,279			19,279
Investments, at fair value, ending balance		17,751	[2],[10],[20]				17,751	[2],[10],[20]		19,279	[1],[5],[15],[19]
Investment, Identifier [Axis]: Revalize, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[19]			11,284			11,284
Investments, at fair value, ending balance		10,390	[2],[10],[20]				10,390	[2],[10],[20]		11,284	[1],[5],[19]
Investment, Identifier [Axis]: Revalize, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[19]			5,595			5,595
Investments, at fair value, ending balance		5,151	[2],[10],[20]				5,151	[2],[10],[20]		5,595	[1],[5],[19]
Investment, Identifier [Axis]: Revalize, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[19]			3,370			3,370
Investments, at fair value, ending balance		3,104	[2],[10],[20]				3,104	[2],[10],[20]		3,370	[1],[5],[19]
Investment, Identifier [Axis]: Revalize, Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			2,294			2,294
Investments, at fair value, ending balance		2,112	[2],[10]				2,112	[2],[10]		2,294	[1],[5],[9]
Investment, Identifier [Axis]: Revalize, Inc., One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			2,253			2,253
Investments, at fair value, ending balance		2,075	[2],[10]				2,075	[2],[10]		2,253	[1],[5],[9]
Investment, Identifier [Axis]: Revalize, Inc., One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			219			219
Investments, at fair value, ending balance		198	[2],[10]				198	[2],[10]		219	[1],[5]
Investment, Identifier [Axis]: Revalize, Inc., One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			224			224
Investments, at fair value, ending balance		214	[2],[10]				214	[2],[10]		224	[1],[5]
Investment, Identifier [Axis]: Revalize, Inc., Preferred stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			30,067			30,067
Investments, at fair value, ending balance		20,250	[2],[10]				20,250	[2],[10]		30,067	[1],[5]
Investment, Identifier [Axis]: Revalize, Inc., Preferred stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			18,046			18,046
Investments, at fair value, ending balance		12,154	[2],[10]				12,154	[2],[10]		18,046	[1],[5]
Investment, Identifier [Axis]: Revalize, Inc., Preferred stock 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			11,768			11,768
Investments, at fair value, ending balance		7,926	[2],[10]				7,926	[2],[10]		11,768	[1],[5]
Investment, Identifier [Axis]: Revalize, Inc., Preferred stock 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			4,481			4,481
Investments, at fair value, ending balance		3,019	[2],[10]				3,019	[2],[10]		4,481	[1],[5]
Investment, Identifier [Axis]: Riskonnect Parent, LLC, LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,513			1,513
Investments, at fair value, ending balance		1,588	[2],[10]				1,588	[2],[10]		1,513	[1],[5]
Investment, Identifier [Axis]: Riskonnect Parent, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[9]			45,407			45,407
Investments, at fair value, ending balance		45,402	[2],[10],[18]				45,402	[2],[10],[18]		45,407	[1],[5],[6],[9]
Investment, Identifier [Axis]: Riskonnect Parent, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,131			2,131
Investments, at fair value, ending balance		2,131	[2],[10]				2,131	[2],[10]		2,131	[1],[5]
Investment, Identifier [Axis]: Riskonnect Parent, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			815			815
Investments, at fair value, ending balance		819	[2],[10]				819	[2],[10]		815	[1],[5],[9]
Investment, Identifier [Axis]: Riskonnect Parent, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			573			573
Investments, at fair value, ending balance		576	[2],[10]				576	[2],[10]		573	[1],[5]
Investment, Identifier [Axis]: Riskonnect Parent, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(4)			(4)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(4)	[1],[5],[11]
Investment, Identifier [Axis]: Riskonnect Parent, LLC, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(10)			(10)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(10)	[1],[5],[11]
Investment, Identifier [Axis]: Riskonnect Parent, LLC, Preferred stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			31,936			31,936
Investments, at fair value, ending balance		34,669	[2],[10]				34,669	[2],[10]		31,936	[1],[5],[26]
Investment, Identifier [Axis]: Riskonnect Parent, LLC, Preferred stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			934			934
Investments, at fair value, ending balance		1,006	[2],[10],[27]				1,006	[2],[10],[27]		934	[1],[5],[26]
Investment, Identifier [Axis]: Riskonnect Parent, LLC, Preferred stock 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			52			52
Investments, at fair value, ending balance		57	[2],[10],[27]				57	[2],[10],[27]		52	[1],[5],[26]
Investment, Identifier [Axis]: Rodeo Buyer Company & Absorb Software Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[19]			7,616			7,616
Investments, at fair value, ending balance		13,056	[2],[10],[25],[29]				13,056	[2],[10],[25],[29]		7,616	[1],[5],[9],[19]
Investment, Identifier [Axis]: Rodeo Buyer Company & Absorb Software Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		7,616	[2],[10],[20],[25],[29]				7,616	[2],[10],[20],[25],[29]		0	[1],[5]
Investment, Identifier [Axis]: Rodeo Buyer Company & Absorb Software Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[29]	0					0
Investment, Identifier [Axis]: Rokt Inc., Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	683					683
Investment, Identifier [Axis]: Rooster BidCo Limited, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[28],[32]	4,753					4,753
Investment, Identifier [Axis]: Rooster BidCo Limited, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12],[25],[28],[32]	(7)					(7)
Investment, Identifier [Axis]: Rooster BidCo Limited, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12],[25],[28],[32]	(26)					(26)
Investment, Identifier [Axis]: Rooster BidCo Limited, Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[28]	1,301					1,301
Investment, Identifier [Axis]: Royal Holdco Corporation, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	5,951					5,951
Investment, Identifier [Axis]: Royal Holdco Corporation, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(5)					(5)
Investment, Identifier [Axis]: Royal Holdco Corporation, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(20)					(20)
Investment, Identifier [Axis]: Rubio's Restaurants, Inc.
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance				0			0		12,063	12,063
Gross additions										3,759
Gross reductions										(3,929)
Net change in unrealized appreciation (depreciation)										6,624
Net realized gain (loss)										(18,517)
Investments, at fair value, ending balance										0
Interest, dividend and fee income										1,187
Investment, Identifier [Axis]: Ruby Slipper Cafe LLC, The, LLC interest 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			174			174
Investments, at fair value, ending balance		151	[2],[10]				151	[2],[10]		174	[1],[5]
Investment, Identifier [Axis]: Ruby Slipper Cafe LLC, The, LLC interest 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			46			46
Investments, at fair value, ending balance		50	[2],[10]				50	[2],[10]		46	[1],[5]
Investment, Identifier [Axis]: Ruby Slipper Cafe LLC, The, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			49			49
Investments, at fair value, ending balance		50	[2],[10]				50	[2],[10]		49	[1],[5]
Investment, Identifier [Axis]: Ruby Slipper Cafe LLC, The, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6]			2,304			2,304
Investments, at fair value, ending balance		2,367	[2],[10]				2,367	[2],[10]		2,304	[1],[5],[6]
Investment, Identifier [Axis]: Ruby Slipper Cafe LLC, The, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			515			515
Investments, at fair value, ending balance		529	[2],[10]				529	[2],[10]		515	[1],[5]
Investment, Identifier [Axis]: Ruby Slipper Cafe LLC, The, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			340			340
Investments, at fair value, ending balance		349	[2],[10]				349	[2],[10]		340	[1],[5]
Investment, Identifier [Axis]: Ruby Slipper Cafe LLC, The, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			190			190
Investments, at fair value, ending balance		196	[2],[10]				196	[2],[10]		190	[1],[5]
Investment, Identifier [Axis]: Ruby Slipper Cafe LLC, The, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		2	[2],[10]				2	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: S.J. Electro Systems, LLC, Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			24,226			24,226
Investments, at fair value, ending balance		24,348	[2],[18]				24,348	[2],[18]		24,226	[1],[5]
Investment, Identifier [Axis]: S.J. Electro Systems, LLC, Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[9],[15],[16]			18,635			18,635
Investments, at fair value, ending balance		18,680	[2],[10],[18]				18,680	[2],[10],[18]		18,635	[1],[9],[15],[16]
Investment, Identifier [Axis]: S.J. Electro Systems, LLC, Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,176			1,176
Investments, at fair value, ending balance		1,179	[2],[10]				1,179	[2],[10]		1,176	[1],[5],[9]
Investment, Identifier [Axis]: S.J. Electro Systems, LLC, Senior secured 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(63)			(63)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(63)	[1],[5],[11]
Investment, Identifier [Axis]: SC Landco Parent, LLC, Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			260			260
Investments, at fair value, ending balance		253	[2],[10]				253	[2],[10]		260	[1],[5]
Investment, Identifier [Axis]: SDC Holdco, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			21,737			21,737
Investments, at fair value, ending balance		21,737	[2],[18]				21,737	[2],[18]		21,737	[1],[5]
Investment, Identifier [Axis]: SDC Holdco, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			192			192
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		192	[1],[5]
Investment, Identifier [Axis]: SDC Holdco, LLC, Second lien
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			3,340			3,340
Investments, at fair value, ending balance		3,563	[2],[10],[14]				3,563	[2],[10],[14]		3,340	[1],[5],[13]
Investment, Identifier [Axis]: SPF Borrower LLC
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance				36,653			36,653
Gross additions							456
Gross reductions							(164)
Net change in unrealized appreciation (depreciation)							657
Net realized gain (loss)							0
Investments, at fair value, ending balance		37,602					37,602			36,653
Interest, dividend and fee income							1,492
Investment, Identifier [Axis]: SPF Borrower LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			12,129			12,129
Investments, at fair value, ending balance		12,786	[2],[10]				12,786	[2],[10]		12,129	[1],[5]
Investment, Identifier [Axis]: SPF Borrower LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			16,191			16,191
Investments, at fair value, ending balance		16,191	[2],[10],[14]				16,191	[2],[10],[14]		16,191	[1],[5],[13]
Investment, Identifier [Axis]: SPF Borrower LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			8,333			8,333
Investments, at fair value, ending balance		8,625	[2],[10],[14]				8,625	[2],[10],[14]		8,333	[1],[5],[13]
Investment, Identifier [Axis]: SPF Borrower LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: SSRG Holdings, LLC, LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			566			566
Investments, at fair value, ending balance		682	[2],[10]				682	[2],[10]		566	[1],[5],[26]
Investment, Identifier [Axis]: SSRG Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			12,470			12,470
Investments, at fair value, ending balance		12,470	[2],[18]				12,470	[2],[18]		12,470	[1],[5]
Investment, Identifier [Axis]: SSRG Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15],[16]			7,744			7,744
Investments, at fair value, ending balance		7,743	[2],[10],[18]				7,743	[2],[10],[18]		7,744	[1],[5],[15],[16]
Investment, Identifier [Axis]: SSRG Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			804			804
Investments, at fair value, ending balance		1,453	[2],[10]				1,453	[2],[10]		804	[1],[5]
Investment, Identifier [Axis]: SSRG Holdings, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			611			611
Investments, at fair value, ending balance		611	[2],[10]				611	[2],[10]		611	[1],[5],[9]
Investment, Identifier [Axis]: Sage Dental Management, LLC, LLC units 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			617			617
Investments, at fair value, ending balance		477	[2],[10]				477	[2],[10]		617	[1],[5]
Investment, Identifier [Axis]: Sage Dental Management, LLC, LLC units 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: SailPoint Technologies Holdings, Inc., One stop
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: SailPoint Technologies Holdings, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[19]			14,654			14,654
Investments, at fair value, ending balance	[1],[5],[19]									14,654
Investment, Identifier [Axis]: SailPoint Technologies Holdings, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance	[1],[5],[11]									0
Investment, Identifier [Axis]: Salon Lofts Group, LLC, LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			112			112
Investments, at fair value, ending balance		93	[2],[10]				93	[2],[10]		112	[1],[5]
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Second lien 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			3,045			3,045
Investments, at fair value, ending balance		3,287	[2],[10],[14]				3,287	[2],[10],[14]		3,045	[1],[5],[13]
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Second lien 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			1,615			1,615
Investments, at fair value, ending balance		1,744	[2],[10],[14]				1,744	[2],[10],[14]		1,615	[1],[5],[13]
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Second lien 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			578			578
Investments, at fair value, ending balance		1,466	[2],[10],[14]				1,466	[2],[10],[14]		578	[1],[5],[13]
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Second lien 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			786			786
Investments, at fair value, ending balance		852	[2],[10],[14]				852	[2],[10],[14]		786	[1],[5],[13]
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Second lien 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			150			150
Investments, at fair value, ending balance		635	[2],[10],[14]				635	[2],[10],[14]		150	[1],[5],[13]
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Second lien 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			304			304
Investments, at fair value, ending balance		162	[2],[10],[14]				162	[2],[10],[14]		304	[1],[5],[13]
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Second lien 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12],[14]	41					41
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			5,256			5,256
Investments, at fair value, ending balance		5,256	[2],[10]				5,256	[2],[10]		5,256	[1],[5],[9]
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Senior secured 10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			80			80
Investments, at fair value, ending balance		156	[2],[10]				156	[2],[10]		80	[1],[5]
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Senior secured 11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		114	[2],[10]				114	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Senior secured 12
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		105	[2],[10]				105	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Senior secured 13
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		86	[2],[10]				86	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Senior secured 14
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			170			170
Investments, at fair value, ending balance		79	[2],[10]				79	[2],[10]		170	[1],[5]
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Senior secured 15
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	3					3
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Senior secured 16
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			540			540
Investments, at fair value, ending balance		540	[2],[10]				540	[2],[10]		540	[1],[5]
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			349			349
Investments, at fair value, ending balance		501	[2],[10]				501	[2],[10]		349	[1],[5]
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Senior secured 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			344			344
Investments, at fair value, ending balance		351	[2],[10]				351	[2],[10]		344	[1],[5]
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Senior secured 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			272			272
Investments, at fair value, ending balance		343	[2],[10]				343	[2],[10]		272	[1],[5]
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Senior secured 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			156			156
Investments, at fair value, ending balance		288	[2],[10]				288	[2],[10]		156	[1],[5]
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Senior secured 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			114			114
Investments, at fair value, ending balance		272	[2],[10]				272	[2],[10]		114	[1],[5]
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Senior secured 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			105			105
Investments, at fair value, ending balance		250	[2],[10]				250	[2],[10]		105	[1],[5]
Investment, Identifier [Axis]: Salon Lofts Group, LLC, Senior secured 9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			86			86
Investments, at fair value, ending balance		170	[2],[10]				170	[2],[10]		86	[1],[5]
Investment, Identifier [Axis]: Sapphire Bidco Oy, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[31],[51]			50,901			50,901
Investments, at fair value, ending balance		49,455	[2],[10],[25],[32],[50]				49,455	[2],[10],[25],[32],[50]		50,901	[1],[5],[8],[31],[51]
Investment, Identifier [Axis]: Sapphire Bidco Oy, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[31],[51]			4,170			4,170
Investments, at fair value, ending balance		4,051	[2],[10],[25],[32],[50]				4,051	[2],[10],[25],[32],[50]		4,170	[1],[5],[8],[31],[51]
Investment, Identifier [Axis]: Sapphire Bidco Oy, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[31],[51]			1,537			1,537
Investments, at fair value, ending balance		1,494	[2],[10],[25],[32],[50]				1,494	[2],[10],[25],[32],[50]		1,537	[1],[5],[8],[9],[31],[51]
Investment, Identifier [Axis]: Saturn Borrower Inc., LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			267			267
Investments, at fair value, ending balance		758	[2],[10]				758	[2],[10]		267	[1],[5]
Investment, Identifier [Axis]: Saturn Borrower Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[15]			26,983			26,983
Investments, at fair value, ending balance		27,052	[2],[10],[18]				27,052	[2],[10],[18]		26,983	[1],[5],[9],[15]
Investment, Identifier [Axis]: Saturn Borrower Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			434			434
Investments, at fair value, ending balance		(7)	[2],[10],[12]				(7)	[2],[10],[12]		434	[1],[5]
Investment, Identifier [Axis]: Severin Acquisition, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14]	35,503					35,503
Investment, Identifier [Axis]: Severin Acquisition, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	667					667
Investment, Identifier [Axis]: Severin Acquisition, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14]	500					500
Investment, Identifier [Axis]: Shoes For Crews Global, LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,109			1,109
Investments, at fair value, ending balance		1,190	[2],[10]				1,190	[2],[10]		1,109	[1],[5]
Investment, Identifier [Axis]: Shoes For Crews Global, LLC, Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,302			1,302
Investments, at fair value, ending balance		1,296	[2],[10]				1,296	[2],[10]		1,302	[1],[5]
Investment, Identifier [Axis]: Shoes For Crews Global, LLC, Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			688			688
Investments, at fair value, ending balance		738	[2],[10],[14]				738	[2],[10],[14]		688	[1],[5],[13]
Investment, Identifier [Axis]: Shoes For Crews Global, LLC, Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			421			421
Investments, at fair value, ending balance		419	[2],[10]				419	[2],[10]		421	[1],[5]
Investment, Identifier [Axis]: Shoes For Crews Global, LLC, Senior secured 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Sloan Company, Inc.
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance				36,653			36,653		0	0
Gross additions										34,008
Gross reductions										(136)
Net change in unrealized appreciation (depreciation)										2,781
Net realized gain (loss)										0
Investments, at fair value, ending balance										36,653
Interest, dividend and fee income										2,112
Investment, Identifier [Axis]: Smart Energy Systems, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14]	6,205					6,205
Investment, Identifier [Axis]: Smart Energy Systems, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(25)					(25)
Investment, Identifier [Axis]: Smart Energy Systems, Inc., Warrant
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	96					96
Investment, Identifier [Axis]: SnapLogic, Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,707			1,707
Investments, at fair value, ending balance		2,048	[2],[10]				2,048	[2],[10]		1,707	[1],[5]
Investment, Identifier [Axis]: SnapLogic, Inc., Warrant
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			439			439
Investments, at fair value, ending balance		527	[2],[10]				527	[2],[10]		439	[1],[5]
Investment, Identifier [Axis]: Sonatype, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			55,697			55,697
Investments, at fair value, ending balance		69,460	[2],[10],[20]				69,460	[2],[10],[20]		55,697	[1],[5],[9]
Investment, Identifier [Axis]: Sonatype, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[19]			13,763			13,763
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		13,763	[1],[5],[19]
Investment, Identifier [Axis]: Sonatype, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance	[1],[5],[11]									0
Investment, Identifier [Axis]: Southern Veterinary Partners, LLC, LLC interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			5,022			5,022
Investments, at fair value, ending balance	[1],[5]									5,022
Investment, Identifier [Axis]: Southern Veterinary Partners, LLC, LLC units 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	259					259
Investment, Identifier [Axis]: Southern Veterinary Partners, LLC, LLC units 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	21					21
Investment, Identifier [Axis]: Southern Veterinary Partners, LLC, LLC units 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	3					3
Investment, Identifier [Axis]: Southern Veterinary Partners, LLC, LLC units 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	0					0
Investment, Identifier [Axis]: Southern Veterinary Partners, LLC, Preferred stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			7,200			7,200
Investments, at fair value, ending balance		5,071	[2],[10],[27]				5,071	[2],[10],[27]		7,200	[1],[5],[26]
Investment, Identifier [Axis]: Southern Veterinary Partners, LLC, Preferred stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			1,360			1,360
Investments, at fair value, ending balance		421	[2],[10],[27]				421	[2],[10],[27]		1,360	[1],[5],[26]
Investment, Identifier [Axis]: Southern Veterinary Partners, LLC, Preferred stock 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[27]	50					50
Investment, Identifier [Axis]: Southern Veterinary Partners, LLC, Preferred stock 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[27]	4					4
Investment, Identifier [Axis]: Spark Bidco Limited, Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[13],[30],[31]			36,204			36,204
Investments, at fair value, ending balance		35,351	[2],[10],[14],[25],[28],[32]				35,351	[2],[10],[14],[25],[28],[32]		36,204	[1],[5],[8],[9],[13],[30],[31]
Investment, Identifier [Axis]: Spark Bidco Limited, Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30],[31]			5,558			5,558
Investments, at fair value, ending balance		5,368	[2],[10],[25],[28],[32]				5,368	[2],[10],[25],[28],[32]		5,558	[1],[5],[8],[9],[30],[31]
Investment, Identifier [Axis]: Spark Bidco Limited, Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[13],[30],[31]			4,388			4,388
Investments, at fair value, ending balance		4,285	[2],[10],[14],[25],[28],[32]				4,285	[2],[10],[14],[25],[28],[32]		4,388	[1],[5],[8],[13],[30],[31]
Investment, Identifier [Axis]: Spark Bidco Limited, Senior secured 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30]			3,991			3,991
Investments, at fair value, ending balance		3,991	[2],[10],[25],[28]				3,991	[2],[10],[25],[28]		3,991	[1],[5],[8],[30]
Investment, Identifier [Axis]: Spark Bidco Limited, Senior secured 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[13],[30],[31]			3,840			3,840
Investments, at fair value, ending balance		3,749	[2],[10],[14],[25],[28],[32]				3,749	[2],[10],[14],[25],[28],[32]		3,840	[1],[5],[8],[13],[30],[31]
Investment, Identifier [Axis]: Spark Bidco Limited, Senior secured 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11],[30],[31]			(8)			(8)
Investments, at fair value, ending balance		(6)	[2],[10],[12],[25],[28],[32]				(6)	[2],[10],[12],[25],[28],[32]		(8)	[1],[5],[8],[11],[30],[31]
Investment, Identifier [Axis]: Spartan Buyer Acquisition Co., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			132			132
Investments, at fair value, ending balance	[1],[5]									132
Investment, Identifier [Axis]: Spartan Buyer Acquisition Co., Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			584			584
Investments, at fair value, ending balance		501	[2],[10]				501	[2],[10]		584	[1],[5]
Investment, Identifier [Axis]: Spartan Buyer Acquisition Co., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[9],[13],[17],[19]			44,251			44,251
Investments, at fair value, ending balance		44,258	[2],[10],[14],[18],[20]				44,258	[2],[10],[14],[18],[20]		44,251	[1],[5],[6],[9],[13],[17],[19]
Investment, Identifier [Axis]: Spartan Buyer Acquisition Co., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			2,820			2,820
Investments, at fair value, ending balance		2,822	[2],[10],[14]				2,822	[2],[10],[14]		2,820	[1],[5],[9],[13]
Investment, Identifier [Axis]: Spartan Buyer Acquisition Co., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11],[13]			(2)			(2)
Investments, at fair value, ending balance		(2)	[2],[10],[12],[14]				(2)	[2],[10],[12],[14]		(2)	[1],[5],[11],[13]
Investment, Identifier [Axis]: Spartan Buyer Acquisition Co., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	126					126
Investment, Identifier [Axis]: Specialty Measurement Bidco Limited, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30]			11,146			11,146
Investments, at fair value, ending balance	[1],[5],[8],[9],[30]									11,146
Investment, Identifier [Axis]: Specialty Measurement Bidco Limited, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30],[31]			10,428			10,428
Investments, at fair value, ending balance	[1],[5],[8],[9],[30],[31]									10,428
Investment, Identifier [Axis]: Specialty Measurement Bidco Limited, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			5,129			5,129
Investments, at fair value, ending balance	[1],[5],[8],[30],[31]									5,129
Investment, Identifier [Axis]: Specialty Measurement Bidco Limited, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30]			2,040			2,040
Investments, at fair value, ending balance	[1],[5],[8],[9],[30]									2,040
Investment, Identifier [Axis]: Specialty Measurement Bidco Limited, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30]			3,805			3,805
Investments, at fair value, ending balance	[1],[5],[8],[9],[30]									3,805
Investment, Identifier [Axis]: Specialty Measurement Bidco Limited, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			4,588			4,588
Investments, at fair value, ending balance	[1],[5],[8],[30],[31]									4,588
Investment, Identifier [Axis]: Spindrift Beverage Co. Inc., LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	2,039					2,039
Investment, Identifier [Axis]: Spindrift Beverage Co. Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	7,557					7,557
Investment, Identifier [Axis]: Spindrift Beverage Co. Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	86					86
Investment, Identifier [Axis]: Spindrift Beverage Co. Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(11)					(11)
Investment, Identifier [Axis]: Stellar Brands, LLC, Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	7,133					7,133
Investment, Identifier [Axis]: Stellar Brands, LLC, Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(5)					(5)
Investment, Identifier [Axis]: Super REGO, LLC, Subordinated debt
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			108			108
Investments, at fair value, ending balance		68	[2],[10],[14]				68	[2],[10],[14]		108	[1],[5],[13]
Investment, Identifier [Axis]: Surewerx Purchaser III, Inc. & Jet Equipment & Tools Ltd., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[15],[16],[19]			29,510			29,510
Investments, at fair value, ending balance		29,361	[2],[10],[18],[20],[25],[29]				29,361	[2],[10],[18],[20],[25],[29]		29,510	[1],[5],[8],[9],[15],[16],[19]
Investment, Identifier [Axis]: Surewerx Purchaser III, Inc. & Jet Equipment & Tools Ltd., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[31]			8,039			8,039
Investments, at fair value, ending balance		7,520	[2],[10],[25],[29],[32]				7,520	[2],[10],[25],[29],[32]		8,039	[1],[5],[8],[9],[31]
Investment, Identifier [Axis]: Surewerx Purchaser III, Inc. & Jet Equipment & Tools Ltd., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8]			501			501
Investments, at fair value, ending balance		1,637	[2],[10],[25],[29]				1,637	[2],[10],[25],[29]		501	[1],[5],[8]
Investment, Identifier [Axis]: Surewerx Purchaser III, Inc. & Jet Equipment & Tools Ltd., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11]			0			0
Investments, at fair value, ending balance		631	[2],[10],[25],[29]				631	[2],[10],[25],[29]		0	[1],[5],[8],[11]
Investment, Identifier [Axis]: Surewerx Purchaser III, Inc. & Jet Equipment & Tools Ltd., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[29],[32]	12					12
Investment, Identifier [Axis]: Suveto Buyer, LLC, Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			534			534
Investments, at fair value, ending balance		529	[2],[10]				529	[2],[10]		534	[1],[5]
Investment, Identifier [Axis]: Suveto Buyer, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			27,639			27,639
Investments, at fair value, ending balance		27,601	[2],[10],[18]				27,601	[2],[10],[18]		27,639	[1],[5]
Investment, Identifier [Axis]: Suveto Buyer, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			194			194
Investments, at fair value, ending balance		8,094	[2],[10]				8,094	[2],[10]		194	[1],[5]
Investment, Identifier [Axis]: Suveto Buyer, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: Switchfly LLC
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance				7,313			7,313
Gross additions							709
Gross reductions							0
Net change in unrealized appreciation (depreciation)							379
Net realized gain (loss)							0
Investments, at fair value, ending balance		8,401					8,401			7,313
Interest, dividend and fee income							13
Investment, Identifier [Axis]: Switchfly LLC
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance				7,313			7,313		$ 7,254	7,254
Gross additions										6,180
Gross reductions										(5,378)
Net change in unrealized appreciation (depreciation)										1,157
Net realized gain (loss)										(1,900)
Investments, at fair value, ending balance										7,313
Interest, dividend and fee income										88
Investment, Identifier [Axis]: Switchfly LLC, LLC interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			860			860
Investments, at fair value, ending balance		813	[2],[10]				813	[2],[10]		860	[1],[5]
Investment, Identifier [Axis]: Switchfly LLC, LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			552			552
Investments, at fair value, ending balance		588	[2],[10]				588	[2],[10]		552	[1],[5]
Investment, Identifier [Axis]: Switchfly LLC, One stop
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14]	1,277					1,277
Investment, Identifier [Axis]: Switchfly LLC, One stop
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			526			526
Investments, at fair value, ending balance	[1],[5],[13]									526
Investment, Identifier [Axis]: Switchfly LLC, Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			5,375			5,375
Investments, at fair value, ending balance		5,723	[2],[10]				5,723	[2],[10]		5,375	[1],[5]
Investment, Identifier [Axis]: Symplr Software, Inc., Common stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,064			1,064
Investments, at fair value, ending balance		998	[2],[10]				998	[2],[10]		1,064	[1],[5]
Investment, Identifier [Axis]: Symplr Software, Inc., LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			185			185
Investments, at fair value, ending balance		174	[2],[10]				174	[2],[10]		185	[1],[5]
Investment, Identifier [Axis]: Symplr Software, Inc., Preferred stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			19,043			19,043
Investments, at fair value, ending balance		19,251	[2],[10],[27]				19,251	[2],[10],[27]		19,043	[1],[5],[26]
Investment, Identifier [Axis]: Symplr Software, Inc., Preferred stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			6,675			6,675
Investments, at fair value, ending balance		6,866	[2],[10],[27]				6,866	[2],[10],[27]		6,675	[1],[5],[26]
Investment, Identifier [Axis]: Symplr Software, Inc., Preferred stock 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			2,527			2,527
Investments, at fair value, ending balance		2,555	[2],[10],[27]				2,555	[2],[10],[27]		2,527	[1],[5],[26]
Investment, Identifier [Axis]: Symplr Software, Inc., Preferred stock 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			1,478			1,478
Investments, at fair value, ending balance		1,494	[2],[10],[27]				1,494	[2],[10],[27]		1,478	[1],[5],[26]
Investment, Identifier [Axis]: TI Intermediate Holdings, LLC, Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[15]			3,668			3,668
Investments, at fair value, ending balance		3,470	[2],[10],[14]				3,470	[2],[10],[14]		3,668	[1],[5],[13],[15]
Investment, Identifier [Axis]: TI Intermediate Holdings, LLC, Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			972			972
Investments, at fair value, ending balance		920	[2],[10],[14]				920	[2],[10],[14]		972	[1],[5],[9],[13]
Investment, Identifier [Axis]: TI Intermediate Holdings, LLC, Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			610			610
Investments, at fair value, ending balance		578	[2],[10],[14]				578	[2],[10],[14]		610	[1],[5],[13]
Investment, Identifier [Axis]: TI Intermediate Holdings, LLC, Senior secured 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			458			458
Investments, at fair value, ending balance		433	[2],[10],[14]				433	[2],[10],[14]		458	[1],[5],[13]
Investment, Identifier [Axis]: TI Intermediate Holdings, LLC, Senior secured 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			168			168
Investments, at fair value, ending balance		160	[2],[10],[14]				160	[2],[10],[14]		168	[1],[5],[9],[13]
Investment, Identifier [Axis]: TI Intermediate Holdings, LLC, Senior secured 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			31			31
Investments, at fair value, ending balance		74	[2],[10],[14]				74	[2],[10],[14]		31	[1],[5],[13]
Investment, Identifier [Axis]: TIDI Legacy Products, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			3,520			3,520
Investments, at fair value, ending balance		3,502	[2],[10]				3,502	[2],[10]		3,520	[1],[5],[9]
Investment, Identifier [Axis]: TIDI Legacy Products, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: TIDI Legacy Products, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: TWAS Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[9],[16],[17]			46,804			46,804
Investments, at fair value, ending balance		46,563	[2],[10],[18]				46,563	[2],[10],[18]		46,804	[1],[9],[16],[17]
Investment, Identifier [Axis]: TWAS Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[15],[16]			41,809			41,809
Investments, at fair value, ending balance		41,590	[2],[10],[18]				41,590	[2],[10],[18]		41,809	[1],[5],[6],[15],[16]
Investment, Identifier [Axis]: TWAS Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			10,854			10,854
Investments, at fair value, ending balance		10,797	[2],[10],[18]				10,797	[2],[10],[18]		10,854	[1],[5],[9]
Investment, Identifier [Axis]: TWAS Holdings, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			8,288			8,288
Investments, at fair value, ending balance		8,246	[2],[10]				8,246	[2],[10]		8,288	[1],[5],[9]
Investment, Identifier [Axis]: TWAS Holdings, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			5,264			5,264
Investments, at fair value, ending balance		5,237	[2],[10]				5,237	[2],[10]		5,264	[1],[5],[9]
Investment, Identifier [Axis]: TWAS Holdings, LLC, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Teaching Company, The, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			13,614			13,614
Investments, at fair value, ending balance		13,388	[2],[10]				13,388	[2],[10]		13,614	[1],[5]
Investment, Identifier [Axis]: Teaching Company, The, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		(2)	[2],[10],[12]				(2)	[2],[10],[12]		0	[1],[5]
Investment, Identifier [Axis]: Tebra Technologies, Inc., LLC interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2,972			2,972
Investments, at fair value, ending balance		4,458	[2],[10]				4,458	[2],[10]		2,972	[1],[5]
Investment, Identifier [Axis]: Tebra Technologies, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			11,261			11,261
Investments, at fair value, ending balance		11,461	[2],[10],[14]				11,461	[2],[10],[14]		11,261	[1],[5],[13]
Investment, Identifier [Axis]: Tebra Technologies, Inc., One stop 10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			88			88
Investments, at fair value, ending balance		90	[2],[10],[14]				90	[2],[10],[14]		88	[1],[5],[13]
Investment, Identifier [Axis]: Tebra Technologies, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			10,962			10,962
Investments, at fair value, ending balance		11,157	[2],[10],[14]				11,157	[2],[10],[14]		10,962	[1],[5],[13]
Investment, Identifier [Axis]: Tebra Technologies, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			7,222			7,222
Investments, at fair value, ending balance		7,350	[2],[10],[14]				7,350	[2],[10],[14]		7,222	[1],[5],[13]
Investment, Identifier [Axis]: Tebra Technologies, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			1,857			1,857
Investments, at fair value, ending balance		1,890	[2],[10],[14]				1,890	[2],[10],[14]		1,857	[1],[5],[13]
Investment, Identifier [Axis]: Tebra Technologies, Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			1,651			1,651
Investments, at fair value, ending balance		1,680	[2],[10],[14]				1,680	[2],[10],[14]		1,651	[1],[5],[13]
Investment, Identifier [Axis]: Tebra Technologies, Inc., One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			1,238			1,238
Investments, at fair value, ending balance		1,260	[2],[10],[14]				1,260	[2],[10],[14]		1,238	[1],[5],[13]
Investment, Identifier [Axis]: Tebra Technologies, Inc., One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			1,031			1,031
Investments, at fair value, ending balance		1,050	[2],[10],[14]				1,050	[2],[10],[14]		1,031	[1],[5],[13]
Investment, Identifier [Axis]: Tebra Technologies, Inc., One stop 8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			825			825
Investments, at fair value, ending balance		840	[2],[10],[14]				840	[2],[10],[14]		825	[1],[5],[13]
Investment, Identifier [Axis]: Tebra Technologies, Inc., One stop 9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			164			164
Investments, at fair value, ending balance		167	[2],[10],[14]				167	[2],[10],[14]		164	[1],[5],[13]
Investment, Identifier [Axis]: Tebra Technologies, Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			11			11
Investments, at fair value, ending balance		12	[2],[10]				12	[2],[10]		11	[1],[5]
Investment, Identifier [Axis]: Tebra Technologies, Inc., Warrant 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			547			547
Investments, at fair value, ending balance		649	[2],[10]				649	[2],[10]		547	[1],[5]
Investment, Identifier [Axis]: Tebra Technologies, Inc., Warrant 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			56			56
Investments, at fair value, ending balance		5	[2],[10]				5	[2],[10]		56	[1],[5]
Investment, Identifier [Axis]: Telesoft Holdings LLC, LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			123			123
Investments, at fair value, ending balance		120	[2],[10]				120	[2],[10]		123	[1],[5]
Investment, Identifier [Axis]: Telesoft Holdings LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15],[16],[19]			21,186			21,186
Investments, at fair value, ending balance		21,074	[2],[10],[18],[20]				21,074	[2],[10],[18],[20]		21,186	[1],[5],[15],[16],[19]
Investment, Identifier [Axis]: Telesoft Holdings LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,432			1,432
Investments, at fair value, ending balance		1,424	[2],[10]				1,424	[2],[10]		1,432	[1],[5],[9]
Investment, Identifier [Axis]: Telesoft Holdings LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			74			74
Investments, at fair value, ending balance		74	[2],[10]				74	[2],[10]		74	[1],[5]
Investment, Identifier [Axis]: Templafy APS and Templafy, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[52]			4,800			4,800
Investments, at fair value, ending balance		4,800	[2],[10],[25],[53]				4,800	[2],[10],[25],[53]		4,800	[1],[5],[8],[9],[52]
Investment, Identifier [Axis]: Templafy APS and Templafy, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[52]			0			0
Investments, at fair value, ending balance		0	[2],[10],[25],[53]				0	[2],[10],[25],[53]		0	[1],[5],[8],[52]
Investment, Identifier [Axis]: Templafy APS and Templafy, LLC, Warrant
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[52]			96			96
Investments, at fair value, ending balance		80	[2],[10],[25],[53]				80	[2],[10],[25],[53]		96	[1],[5],[8],[52]
Investment, Identifier [Axis]: Titan Fitness, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[9],[13],[17]			33,063			33,063
Investments, at fair value, ending balance		31,471	[2],[10],[14]				31,471	[2],[10],[14]		33,063	[1],[5],[6],[9],[13],[17]
Investment, Identifier [Axis]: Titan Fitness, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			2,398			2,398
Investments, at fair value, ending balance		2,283	[2],[10],[14]				2,283	[2],[10],[14]		2,398	[1],[5],[13]
Investment, Identifier [Axis]: Titan Fitness, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			300			300
Investments, at fair value, ending balance		318	[2],[10],[14]				318	[2],[10],[14]		300	[1],[5],[13]
Investment, Identifier [Axis]: Titan Fitness, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14]	12					12
Investment, Identifier [Axis]: Togetherwork Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			27,973			27,973
Investments, at fair value, ending balance		27,833	[2],[10],[18]				27,833	[2],[10],[18]		27,973	[1],[5],[16]
Investment, Identifier [Axis]: Togetherwork Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		698	[2],[10]				698	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Togetherwork Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Togetherwork Holdings, LLC, Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,355			1,355
Investments, at fair value, ending balance		1,442	[2],[10]				1,442	[2],[10]		1,355	[1],[5]
Investment, Identifier [Axis]: Transaction Data Systems, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[15],[17],[19]			75,488			75,488
Investments, at fair value, ending balance		74,989	[2],[10],[18],[20]				74,989	[2],[10],[18],[20]		75,488	[1],[5],[6],[15],[17],[19]
Investment, Identifier [Axis]: Transaction Data Systems, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Transform Bidco Limited, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30]			5,337			5,337
Investments, at fair value, ending balance		5,284	[2],[10],[25],[28]				5,284	[2],[10],[25],[28]		5,337	[1],[5],[8],[9],[30]
Investment, Identifier [Axis]: Transform Bidco Limited, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11],[30]			(2)			(2)
Investments, at fair value, ending balance		4,211	[2],[10],[25],[28]				4,211	[2],[10],[25],[28]		(2)	[1],[5],[8],[11],[30]
Investment, Identifier [Axis]: Transform Bidco Limited, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11],[30]			(145)			(145)
Investments, at fair value, ending balance		3,721	[2],[10],[25],[28],[32]				3,721	[2],[10],[25],[28],[32]		(145)	[1],[5],[8],[11],[30]
Investment, Identifier [Axis]: Transform Bidco Limited, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[28],[32]	601					601
Investment, Identifier [Axis]: Transform Bidco Limited, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12],[25],[28]	(2)					(2)
Investment, Identifier [Axis]: Transform Bidco Limited, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12],[25],[28]	(159)					(159)
Investment, Identifier [Axis]: Transform Bidco Limited, One stop 7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12],[25],[28]	(97)					(97)
Investment, Identifier [Axis]: Tricentis Operations Holdings, Inc., LP interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	40					40
Investment, Identifier [Axis]: Tricentis Operations Holdings, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[14]	7,516					7,516
Investment, Identifier [Axis]: Tricentis Operations Holdings, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(5)					(5)
Investment, Identifier [Axis]: Tricentis Operations Holdings, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(8)					(8)
Investment, Identifier [Axis]: Trinity Air Consultants Holdings Corporation, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			2,632			2,632
Investments, at fair value, ending balance		2,632	[2],[10]				2,632	[2],[10]		2,632	[1],[5],[9]
Investment, Identifier [Axis]: Trinity Air Consultants Holdings Corporation, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			530			530
Investments, at fair value, ending balance		530	[2],[10]				530	[2],[10]		530	[1],[5]
Investment, Identifier [Axis]: Trinity Air Consultants Holdings Corporation, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Trinity Air Consultants Holdings Corporation, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			494			494
Investments, at fair value, ending balance		494	[2],[10]				494	[2],[10]		494	[1],[5]
Investment, Identifier [Axis]: Trinity Air Consultants Holdings Corporation, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	249					249
Investment, Identifier [Axis]: Triple Lift, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[19]			7,008			7,008
Investments, at fair value, ending balance		6,972	[2],[18],[20]				6,972	[2],[18],[20]		7,008	[1],[5],[19]
Investment, Identifier [Axis]: Triple Lift, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,495			1,495
Investments, at fair value, ending balance		1,487	[2],[10],[18]				1,487	[2],[10],[18]		1,495	[1],[5],[9]
Investment, Identifier [Axis]: Triple Lift, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			50			50
Investments, at fair value, ending balance		(6)	[2],[10],[12]				(6)	[2],[10],[12]		50	[1],[5]
Investment, Identifier [Axis]: Tronair Parent, Inc., LLC units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			66			66
Investments, at fair value, ending balance		68	[2],[10]				68	[2],[10]		66	[1],[5]
Investment, Identifier [Axis]: Ultimate Baked Goods Midco LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			9,314			9,314
Investments, at fair value, ending balance	[1],[5],[9]									9,314
Investment, Identifier [Axis]: Ultimate Baked Goods Midco LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			48			48
Investments, at fair value, ending balance	[1],[5]									48
Investment, Identifier [Axis]: Ultimate Baked Goods Midco LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,926			1,926
Investments, at fair value, ending balance	[1],[5]									1,926
Investment, Identifier [Axis]: Unchained Labs, LLC, Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,372			1,372
Investments, at fair value, ending balance		1,379	[2],[10]				1,379	[2],[10]		1,372	[1],[5]
Investment, Identifier [Axis]: Unchained Labs, LLC, Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,158			1,158
Investments, at fair value, ending balance		1,164	[2],[10]				1,164	[2],[10]		1,158	[1],[5],[9]
Investment, Identifier [Axis]: Unchained Labs, LLC, Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(2)			(2)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(2)	[1],[5],[11]
Investment, Identifier [Axis]: VSG Acquisition Corp. and Sherrill, Inc., LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			47			47
Investments, at fair value, ending balance		80	[2],[10]				80	[2],[10]		47	[1],[5]
Investment, Identifier [Axis]: VSG Acquisition Corp. and Sherrill, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			11,749			11,749
Investments, at fair value, ending balance		12,051	[2],[10],[18]				12,051	[2],[10],[18]		11,749	[1],[5],[16]
Investment, Identifier [Axis]: VSG Acquisition Corp. and Sherrill, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,569			1,569
Investments, at fair value, ending balance		2,085	[2],[10]				2,085	[2],[10]		1,569	[1],[5]
Investment, Identifier [Axis]: VSG Acquisition Corp. and Sherrill, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(6)			(6)
Investments, at fair value, ending balance		1,610	[2],[10]				1,610	[2],[10]		(6)	[1],[5],[11]
Investment, Identifier [Axis]: VSG Acquisition Corp. and Sherrill, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	54					54
Investment, Identifier [Axis]: Vantage Bidco GMBH, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[13],[31],[45]			8,654			8,654
Investments, at fair value, ending balance		8,504	[2],[10],[14],[25],[32],[46]				8,504	[2],[10],[14],[25],[32],[46]		8,654	[1],[5],[8],[9],[13],[31],[45]
Investment, Identifier [Axis]: Vantage Bidco GMBH, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11],[31],[45]			(11)			(11)
Investments, at fair value, ending balance		0	[2],[10],[12],[25],[32],[46]				0	[2],[10],[12],[25],[32],[46]		(11)	[1],[5],[8],[11],[31],[45]
Investment, Identifier [Axis]: Varicent Intermediate Holdings Corporation, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13]			46,267			46,267
Investments, at fair value, ending balance		49,508	[2],[10],[14],[25],[29]				49,508	[2],[10],[14],[25],[29]		46,267	[1],[5],[13]
Investment, Identifier [Axis]: Varicent Intermediate Holdings Corporation, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(93)			(93)
Investments, at fair value, ending balance		0	[2],[10],[12],[25],[29]				0	[2],[10],[12],[25],[29]		(93)	[1],[5],[11]
Investment, Identifier [Axis]: Varicent Intermediate Holdings Corporation, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(90)			(90)
Investments, at fair value, ending balance		0	[2],[10],[12],[25],[29]				0	[2],[10],[12],[25],[29]		(90)	[1],[5],[11]
Investment, Identifier [Axis]: Varinem German Midco GMBH, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[31],[45]			7,299			7,299
Investments, at fair value, ending balance		7,199	[2],[10],[25],[32],[46]				7,199	[2],[10],[25],[32],[46]		7,299	[1],[5],[8],[31],[45]
Investment, Identifier [Axis]: Varinem German Midco GMBH, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[31],[45]			0			0
Investments, at fair value, ending balance		(38)	[2],[10],[12],[25],[32],[46]				(38)	[2],[10],[12],[25],[32],[46]		0	[1],[5],[8],[31],[45]
Investment, Identifier [Axis]: Vector CS Midco Limited & Cloudsense Ltd., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[13],[21],[30],[31]			7,004			7,004
Investments, at fair value, ending balance	[1],[5],[8],[13],[21],[30],[31]									7,004
Investment, Identifier [Axis]: Vector CS Midco Limited & Cloudsense Ltd., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[13],[21],[30],[31]			138			138
Investments, at fair value, ending balance	[1],[5],[8],[13],[21],[30],[31]									138
Investment, Identifier [Axis]: Vendavo, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[16],[17]			25,460			25,460
Investments, at fair value, ending balance		25,602	[2],[10]				25,602	[2],[10]		25,460	[1],[5],[6],[16],[17]
Investment, Identifier [Axis]: Vendavo, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,129			1,129
Investments, at fair value, ending balance		1,404	[2],[10]				1,404	[2],[10]		1,129	[1],[5]
Investment, Identifier [Axis]: Vendavo, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			928			928
Investments, at fair value, ending balance		933	[2],[10]				933	[2],[10]		928	[1],[5]
Investment, Identifier [Axis]: Veranex, Inc., Senior secured 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13],[21]			2,403			2,403
Investments, at fair value, ending balance		2,532	[2],[10],[14],[22]				2,532	[2],[10],[14],[22]		2,403	[1],[5],[9],[13],[21]
Investment, Identifier [Axis]: Veranex, Inc., Senior secured 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[21]			284			284
Investments, at fair value, ending balance		299	[2],[10],[14],[22]				299	[2],[10],[14],[22]		284	[1],[5],[13],[21]
Investment, Identifier [Axis]: Veranex, Inc., Senior secured 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[21]			72			72
Investments, at fair value, ending balance		76	[2],[10],[14],[22]				76	[2],[10],[14],[22]		72	[1],[5],[13],[21]
Investment, Identifier [Axis]: Vermont Aus Pty Ltd, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[31],[41]			9,465			9,465
Investments, at fair value, ending balance		8,507	[2],[10],[25],[32],[42]				8,507	[2],[10],[25],[32],[42]		9,465	[1],[5],[8],[31],[41]
Investment, Identifier [Axis]: Vermont Aus Pty Ltd, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[31],[41]			10,081			10,081
Investments, at fair value, ending balance		8,323	[2],[10],[25],[32],[42]				8,323	[2],[10],[25],[32],[42]		10,081	[1],[5],[8],[31],[41]
Investment, Identifier [Axis]: Vessco Midco Holdings, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			22,275			22,275
Investments, at fair value, ending balance		22,500	[2],[18]				22,500	[2],[18]		22,275	[1],[5]
Investment, Identifier [Axis]: Vessco Midco Holdings, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,025			1,025
Investments, at fair value, ending balance		1,975	[2],[10]				1,975	[2],[10]		1,025	[1],[5]
Investment, Identifier [Axis]: Vessco Midco Holdings, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(25)			(25)
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		(25)	[1],[5],[11]
Investment, Identifier [Axis]: Viper Bidco, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	38,081					38,081
Investment, Identifier [Axis]: Viper Bidco, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[25],[32]	18,014					18,014
Investment, Identifier [Axis]: Viper Bidco, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: Viper Bidco, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: Virginia Green Acquisition, LLC, LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			454			454
Investments, at fair value, ending balance		471	[2],[10]				471	[2],[10]		454	[1],[5]
Investment, Identifier [Axis]: Virginia Green Acquisition, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			2,416			2,416
Investments, at fair value, ending balance		2,403	[2],[10],[18]				2,403	[2],[10],[18]		2,416	[1],[5],[9]
Investment, Identifier [Axis]: Virginia Green Acquisition, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		169	[2],[10]				169	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: Virginia Green Acquisition, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			99			99
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		99	[1],[5]
Investment, Identifier [Axis]: W3 Co., LLC interest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,679			1,679
Investments, at fair value, ending balance		1,596	[2],[10]				1,596	[2],[10]		1,679	[1],[5]
Investment, Identifier [Axis]: W3 Co., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			252			252
Investments, at fair value, ending balance		255	[2],[10]				255	[2],[10]		252	[1],[5]
Investment, Identifier [Axis]: WBZ Investment, LLC, LLC interest 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			119			119
Investments, at fair value, ending balance		76	[2],[10]				76	[2],[10]		119	[1],[5]
Investment, Identifier [Axis]: WBZ Investment, LLC, LLC interest 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			82			82
Investments, at fair value, ending balance		53	[2],[10]				53	[2],[10]		82	[1],[5]
Investment, Identifier [Axis]: WBZ Investment, LLC, LLC interest 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			66			66
Investments, at fair value, ending balance		42	[2],[10]				42	[2],[10]		66	[1],[5]
Investment, Identifier [Axis]: WBZ Investment, LLC, LLC interest 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			59			59
Investments, at fair value, ending balance		37	[2],[10]				37	[2],[10]		59	[1],[5]
Investment, Identifier [Axis]: WBZ Investment, LLC, LLC interest 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			25			25
Investments, at fair value, ending balance		16	[2],[10]				16	[2],[10]		25	[1],[5]
Investment, Identifier [Axis]: WBZ Investment, LLC, LLC interest 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			2			2
Investments, at fair value, ending balance		2	[2],[10]				2	[2],[10]		2	[1],[5]
Investment, Identifier [Axis]: WBZ Investment, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[16]			1,717			1,717
Investments, at fair value, ending balance	[1],[5],[13],[16]									1,717
Investment, Identifier [Axis]: WBZ Investment, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[16],[17]			7,804			7,804
Investments, at fair value, ending balance		7,753	[2],[10]				7,753	[2],[10]		7,804	[1],[5],[13],[16],[17]
Investment, Identifier [Axis]: WBZ Investment, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	1,709					1,709
Investment, Identifier [Axis]: WBZ Investment, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[16]			1,194			1,194
Investments, at fair value, ending balance		1,188	[2],[10]				1,188	[2],[10]		1,194	[1],[5],[13],[16]
Investment, Identifier [Axis]: WBZ Investment, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[16]			628			628
Investments, at fair value, ending balance		628	[2],[10]				628	[2],[10]		628	[1],[5],[13],[16]
Investment, Identifier [Axis]: WBZ Investment, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: WPEngine, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			5,438			5,438
Investments, at fair value, ending balance		5,438	[2],[10]				5,438	[2],[10]		5,438	[1],[5],[9]
Investment, Identifier [Axis]: WPEngine, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5]
Investment, Identifier [Axis]: WRE Holding Corp., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			16,514			16,514
Investments, at fair value, ending balance		16,432	[2],[18]				16,432	[2],[18]		16,514	[1],[5]
Investment, Identifier [Axis]: WRE Holding Corp., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			241			241
Investments, at fair value, ending balance		1,502	[2],[10]				1,502	[2],[10]		241	[1],[5]
Investment, Identifier [Axis]: WRE Holding Corp., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: WU Holdco, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[15]			4,849			4,849
Investments, at fair value, ending balance		4,823	[2],[10],[18]				4,823	[2],[10],[18]		4,849	[1],[5],[15]
Investment, Identifier [Axis]: WU Holdco, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,713			1,713
Investments, at fair value, ending balance		1,704	[2],[10]				1,704	[2],[10]		1,713	[1],[5],[9]
Investment, Identifier [Axis]: WU Holdco, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			446			446
Investments, at fair value, ending balance		443	[2],[10]				443	[2],[10]		446	[1],[5]
Investment, Identifier [Axis]: WU Holdco, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,567			1,567
Investments, at fair value, ending balance		2,223	[2],[10]				2,223	[2],[10]		1,567	[1],[5]
Investment, Identifier [Axis]: WU Holdco, Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			61			61
Investments, at fair value, ending balance		130	[2],[10]				130	[2],[10]		61	[1],[5]
Investment, Identifier [Axis]: Watermill Express, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[19]			3,072			3,072
Investments, at fair value, ending balance	[1],[5],[19]									3,072
Investment, Identifier [Axis]: Watermill Express, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			297			297
Investments, at fair value, ending balance	[1],[5]									297
Investment, Identifier [Axis]: Watermill Express, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			111			111
Investments, at fair value, ending balance	[1],[5]									111
Investment, Identifier [Axis]: Watermill Express, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			742			742
Investments, at fair value, ending balance	[1],[5],[9]									742
Investment, Identifier [Axis]: Watermill Express, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			371			371
Investments, at fair value, ending balance	[1],[5]									371
Investment, Identifier [Axis]: Watermill Express, LLC, One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			564			564
Investments, at fair value, ending balance	[1],[5]									564
Investment, Identifier [Axis]: Watermill Express, LLC., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[18],[20]	3,055					3,055
Investment, Identifier [Axis]: Watermill Express, LLC., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	295					295
Investment, Identifier [Axis]: Watermill Express, LLC., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	237					237
Investment, Identifier [Axis]: Watermill Express, LLC., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	737					737
Investment, Identifier [Axis]: Watermill Express, LLC., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	369					369
Investment, Identifier [Axis]: Watermill Express, LLC., One stop 6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	1,103					1,103
Investment, Identifier [Axis]: Wealth Enhancement Group, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	3,977					3,977
Investment, Identifier [Axis]: Wealth Enhancement Group, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	2,868					2,868
Investment, Identifier [Axis]: Wealth Enhancement Group, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: Wealth Enhancement Group, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: WebPT, Inc., One stop
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			903			903
Investments, at fair value, ending balance		912	[2],[10]				912	[2],[10]		903	[1],[5]
Investment, Identifier [Axis]: Whitebridge Pet Brands, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[6],[16],[17]			26,358			26,358
Investments, at fair value, ending balance	[1],[5],[6],[16],[17]									26,358
Investment, Identifier [Axis]: Whitebridge Pet Brands, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance	[1],[5],[11]									0
Investment, Identifier [Axis]: Wildcat TopCo, Inc., LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	503					503
Investment, Identifier [Axis]: Wildcat TopCo, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	23,419					23,419
Investment, Identifier [Axis]: Wildcat TopCo, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: Wildcat TopCo, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	0					0
Investment, Identifier [Axis]: Winebow Holdings, Inc., One stop
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[9],[15]			8,887			8,887
Investments, at fair value, ending balance	[1],[9],[15]									8,887
Investment, Identifier [Axis]: Winebow Holdings, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[18]	8,463					8,463
Investment, Identifier [Axis]: Wineshipping.com LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[16]			9,190			9,190
Investments, at fair value, ending balance		8,009	[2],[10]				8,009	[2],[10]		9,190	[1],[5],[16]
Investment, Identifier [Axis]: Wineshipping.com LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			251			251
Investments, at fair value, ending balance		219	[2],[10]				219	[2],[10]		251	[1],[5]
Investment, Identifier [Axis]: Wineshipping.com LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			138			138
Investments, at fair value, ending balance		118	[2],[10]				118	[2],[10]		138	[1],[5]
Investment, Identifier [Axis]: Wizard Bidco Limited, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[30]			22,740			22,740
Investments, at fair value, ending balance		22,740	[2],[10],[25],[28]				22,740	[2],[10],[25],[28]		22,740	[1],[5],[8],[9],[30]
Investment, Identifier [Axis]: Wizard Bidco Limited, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[9],[13],[30],[31]			10,483			10,483
Investments, at fair value, ending balance		10,681	[2],[10],[14],[25],[28],[32]				10,681	[2],[10],[14],[25],[28],[32]		10,483	[1],[5],[8],[9],[13],[30],[31]
Investment, Identifier [Axis]: Wizard Bidco Limited, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			8,322			8,322
Investments, at fair value, ending balance		8,039	[2],[10],[25],[28],[32]				8,039	[2],[10],[25],[28],[32]		8,322	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: Wizard Bidco Limited, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[30],[31]			192			192
Investments, at fair value, ending balance		194	[2],[10],[25],[28],[32]				194	[2],[10],[25],[28],[32]		192	[1],[5],[8],[30],[31]
Investment, Identifier [Axis]: Wizard Bidco Limited, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[8],[11],[30],[31]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12],[25],[28],[32]				0	[2],[10],[12],[25],[28],[32]		0	[1],[5],[8],[11],[30],[31]
Investment, Identifier [Axis]: Workforce Software, LLC, Common stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[26]			1,524			1,524
Investments, at fair value, ending balance	[1],[5],[26]									1,524
Investment, Identifier [Axis]: Workforce Software, LLC, Common stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			48			48
Investments, at fair value, ending balance	[1],[5]									48
Investment, Identifier [Axis]: Workforce Software, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[19]			41,999			41,999
Investments, at fair value, ending balance	[1],[5],[13],[19]									41,999
Investment, Identifier [Axis]: Workforce Software, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[13],[19]			7,436			7,436
Investments, at fair value, ending balance	[1],[5],[13],[19]									7,436
Investment, Identifier [Axis]: Workforce Software, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			5,266			5,266
Investments, at fair value, ending balance	[1],[5],[9],[13]									5,266
Investment, Identifier [Axis]: Workforce Software, LLC, One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[13]			1,580			1,580
Investments, at fair value, ending balance	[1],[5],[9],[13]									1,580
Investment, Identifier [Axis]: Workforce Software, LLC, One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance	[1],[5],[11]									0
Investment, Identifier [Axis]: World Insurance Associates, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(40)					(40)
Investment, Identifier [Axis]: World Insurance Associates, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10],[12]	(3)					(3)
Investment, Identifier [Axis]: YE Brands Holding, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9],[15]			17,632			17,632
Investments, at fair value, ending balance		17,543	[2],[10],[18]				17,543	[2],[10],[18]		17,632	[1],[5],[9],[15]
Investment, Identifier [Axis]: YE Brands Holding, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			933			933
Investments, at fair value, ending balance		965	[2],[10]				965	[2],[10]		933	[1],[5]
Investment, Identifier [Axis]: YE Brands Holding, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			54			54
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		54	[1],[5]
Investment, Identifier [Axis]: YI, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			4,430			4,430
Investments, at fair value, ending balance		4,407	[2],[10]				4,407	[2],[10]		4,430	[1],[5],[9]
Investment, Identifier [Axis]: YI, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: YI, LLC, One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10],[12]				0	[2],[10],[12]		0	[1],[5],[11]
Investment, Identifier [Axis]: Yorkshire Parent, Inc., LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			577			577
Investments, at fair value, ending balance		625	[2],[10]				625	[2],[10]		577	[1],[5]
Investment, Identifier [Axis]: Yorkshire Parent, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			2,634			2,634
Investments, at fair value, ending balance		2,583	[2],[10]				2,583	[2],[10]		2,634	[1],[5],[9]
Investment, Identifier [Axis]: Yorkshire Parent, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		55	[2],[10]				55	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Yorkshire Parent, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		2,574	[2],[10]				2,574	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Yorkshire Parent, Inc., One stop 4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	713					713
Investment, Identifier [Axis]: Yorkshire Parent, Inc., One stop 5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	62					62
Investment, Identifier [Axis]: Zarya Holdco, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			1,385			1,385
Investments, at fair value, ending balance		7,211	[2],[10]				7,211	[2],[10]		1,385	[1],[5],[9]
Investment, Identifier [Axis]: Zarya Holdco, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			7,102			7,102
Investments, at fair value, ending balance		1,406	[2],[10]				1,406	[2],[10]		7,102	[1],[5],[9]
Investment, Identifier [Axis]: Zarya Holdco, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			(2)			(2)
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		(2)	[1],[5],[11]
Investment, Identifier [Axis]: Zendesk, Inc., LP units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			602			602
Investments, at fair value, ending balance		624	[2],[10]				624	[2],[10]		602	[1],[5]
Investment, Identifier [Axis]: Zendesk, Inc., One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[19]			28,647			28,647
Investments, at fair value, ending balance		28,508	[2],[10],[20]				28,508	[2],[10],[20]		28,647	[1],[5],[19]
Investment, Identifier [Axis]: Zendesk, Inc., One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: Zendesk, Inc., One stop 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[11]			0			0
Investments, at fair value, ending balance		0	[2],[10]				0	[2],[10]		0	[1],[5],[11]
Investment, Identifier [Axis]: bswift, LLC, One stop
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5],[9]			7,817			7,817
Investments, at fair value, ending balance	[1],[5],[9]									7,817
Investment, Identifier [Axis]: bswift, LLC, One stop 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	7,643					7,643
Investment, Identifier [Axis]: bswift, LLC, One stop 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, ending balance	[2],[10]	$ 10,000					10,000
Investment, Identifier [Axis]: mParticle, Inc., Preferred stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			1,120			1,120
Investments, at fair value, ending balance	[1],[5]									1,120
Investment, Identifier [Axis]: mParticle, Inc., Warrant
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Investments, at fair value, beginning balance	[1],[5]			$ 382			$ 382
Investments, at fair value, ending balance	[1],[5]									$ 382
Fair Value | Asset Concentration Risk | Non-qualifying Asset
Concentration risk, percentage				13.30%			14.40%

[1] The fair values of investments were valued using significant unobservable inputs, unless noted otherwise. See Note 6.

[2] The fair values of investments were valued using significant unobservable inputs, unless noted otherwise. See Note 6.

[3] As defined in the 1940 Act, the Company is deemed to be an “affiliated person” of the portfolio company as the Company owns five percent or more of the portfolio company's voting securities (“non-controlled affiliate”). Transactions related to investments in non-controlled affiliates for the year ended September 30, 2024 were as follows: Portfolio CompanyFair value as of September 30, 2023 Gross additions(a) Gross reductions(b) Net change in unrealized appreciation (depreciation)Net realized gain (loss)Fair value as of September 30, 2024Interest, dividend and fee incomeAbita Brewing Co. LLC$6,536 $2,166 $(709)$(1,993)$— $6,000 $575 Bayside Opco, LLC22,044 2,758 (699)5,024 — 29,127 3,660 Benetech, Inc.1,353 780 (843)503 — 1,793 9 Elite Dental Partners LLC13,396 5,845 (3,013)(4,532)— 11,696 180 Imperial Optical Midco Inc.— 94,556 — (692)— 93,864 1,008 Opening Day Borrower 111 LLC24,438 27,853 (23,040)(4,272)(43)24,936 629 Rubio's Restaurants, Inc.12,063 3,759 (3,929)6,624 (18,517)— 1,187 SPF Borrower LLC— 34,008 (136)2,781 — 36,653 2,112 Switchfly LLC7,254 6,180 (5,378)1,157 (1,900)7,313 88 Total Non-Controlled Affiliates$87,084 $177,905 $(37,747)$4,600 $(20,460)$211,382 $9,448  (a) Gross additions could include increases in the cost basis of investments resulting from new investments, amounts related to PIK interest capitalized and added to the principal balance of the respective loans, the accretion of discounts, the exchange of one or more existing investments for one or more new investments and the movement of an existing portfolio company into this affiliated category from a different category. (b) Gross reductions could include decreases in the cost basis of investments resulting from principal collections related to investment repayments and sales, the amortization of premiums, the reversal of capitalized PIK for non-accrual positions and the exchange of one or more existing securities for one or more new securities.

[4] As defined in the 1940 Act, the Company is deemed to be both an “affiliated person” of and “control” this portfolio company as the Company 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) (“controlled affiliate”). Transactions related to investments in controlled affiliates for the six months ended March 31, 2025 were as follows: Portfolio CompanyFair value as of September 30, 2024 Gross additions(a) Gross reductions(b) Net change in unrealized appreciation (depreciation)Net realized gain (loss)Fair value as of March 31, 2025Interest, dividend and fee incomeMMan Acquisition Co.$12,205 $238 $— $(527)$— $11,916 $249 Total Controlled Affiliates$12,205 $238 $— $(527)$— $11,916 $249  (a) Gross additions could include increases in the cost basis of investments resulting from new investments, amounts related to PIK interest capitalized and added to the principal balance of the respective loans, the accretion of discounts, the exchange of one or more existing investments for one or more new investments and the movement of an existing portfolio company into this affiliated category from a different category. (b) Gross reductions could include decreases in the cost basis of investments resulting from principal collections related to investment repayments or sales, the amortization of premiums, the reversal of capitalized PIK for non-accrual positions and the exchange of one or more existing securities for one or more new securities.

[5] Denotes that all or a portion of the investment collateralizes the JPM Credit Facility (as defined in Note 7).

[6] Denotes that all or a portion of the loan secures the notes offered in the 2018 Debt Securitization (as defined in Note 7).

[7] The headquarters of this portfolio company is located in Canada.

[8] The investment is treated as a non-qualifying asset under Section 55(a) of the Investment Company Act of 1940, as amended (the “1940 Act”). Under the 1940 Act, the Company cannot acquire any non-qualifying asset unless, at the time the acquisition is made, qualifying assets represent at least 70% of the Company's total assets. As of September 30, 2024, total non-qualifying assets at fair value represented 13.3% of the Company's total assets calculated in accordance with the 1940 Act.

[9] Denotes that all or a portion of the loan collateralizes the GBDC 3 DB Credit Facility (as defined in Note 7).

[10] Denotes that all or a portion of the investment collateralizes the JPM Credit Facility (as defined in Note 7).

[11] The negative fair value is the result of the capitalized discount on the loan or the unfunded commitment being valued below par. The negative amortized cost is the result of the capitalized discount being greater than the principal amount outstanding on the loan.

[12] The negative fair value is the result of the capitalized discount on the loan or the unfunded commitment being valued below par. The negative amortized cost is the result of the capitalized discount being greater than the principal amount outstanding on the loan.

[13] All or a portion of the loan interest was capitalized into the outstanding principal balance of the loan in accordance with the terms of the credit agreement during the year ended September 30, 2024.

[14] All or a portion of the loan interest was capitalized into the outstanding principal balance of the loan in accordance with the terms of the credit agreement during the six months ended March 31, 2025.

[15] Denotes that all or a portion of the loan secures the notes offered in the GBDC 3 2021 Debt Securitization (as defined in Note 7).

[16] Denotes that all or a portion of the loan secures the notes offered in the GBDC 3 2022-2 Debt Securitization (as defined in Note 7).

[17] Denotes that all or a portion of the loan secures the notes offered in the GCIC 2018 Debt Securitization (as defined in Note 7).

[18] Denotes that all or a portion of the loan collateralizes the notes offered in the 2024 Debt Securitization (as defined in Note 7).

[19] Denotes that all or a portion of the loan secures the notes offered in the GBDC 3 2022 Debt Securitization (as defined in Note 7).

[20] Denotes that all or a portion of the loan secures the notes offered in the GBDC 3 2022 Debt Securitization (as defined in Note 7).

[21] Loan was on non-accrual status as of September 30, 2024, meaning that the Company has ceased recognizing interest income on the loan.

[22] Investment was on non-accrual status as of March 31, 2025, meaning that the Company has ceased recognizing interest or non-cash dividend income on the investment.

[23] The headquarters of this portfolio company is located in Luxembourg.

[24] The headquarters of this portfolio company is located in Luxembourg.

[25] The investment is treated as a non-qualifying asset under Section 55(a) of the Investment Company Act of 1940, as amended (the “1940 Act”). Under the 1940 Act, the Company cannot acquire any non-qualifying asset unless, at the time the acquisition is made, qualifying assets represent at least 70% of the Company's total assets. As of March 31, 2025, total non-qualifying assets at fair value represented 14.4% of the Company's total assets calculated in accordance with the 1940 Act.

[26] The Company holds an equity investment that is income producing.

[27] The Company holds an equity investment that is income producing.

[28] The headquarters of this portfolio company is located in the United Kingdom.

[29] The headquarters of this portfolio company is located in Canada.

[30] The headquarters of this portfolio company is located in the United Kingdom.

[31] Investment is denominated in foreign currency and is translated into U.S. dollars as of the valuation date or the date of the transaction. See Note 2.

[32] Investment is denominated in foreign currency and is translated into U.S. dollars as of the valuation date or the date of the transaction. See Note 2.

[33] The headquarters of this portfolio company is located in Netherlands.

[34] The headquarters of this portfolio company is located in Netherlands.

[35] The headquarters of this portfolio company is located in France.

[36] The headquarters of this portfolio company is located in France.

[37] The fair value of the loan reflects the legal claim on par and accrued uncapitalized payment-in-kind (“PIK”) interest.

[38] The fair value of the loan reflects the legal claim on par and accrued uncapitalized payment-in-kind (“PIK”) interest.

[39] The headquarters of this portfolio company is located in Israel.

[40] The headquarters of this portfolio company is located in Israel.

[41] The headquarters of this portfolio company is located in Australia.

[42] The headquarters of this portfolio company is located in Australia.

[43] The fair value of this investment was valued using Level 1 inputs. See Note 6.

[44] The fair value of this investment was valued using Level 1 inputs. See Note 6.

[45] The headquarters of this portfolio company is located in Germany.

[46] The headquarters of this portfolio company is located in Germany.

[47] The headquarters of this portfolio company is located in Sweden.

[48] The headquarters of this portfolio company is located in Sweden.

[49] The headquarters of this portfolio company is located in Jersey.

[50] The headquarters of this portfolio company is located in Finland.

[51] The headquarters of this portfolio company is located in Finland.

[52] The headquarters of this portfolio company is located in Denmark.

[53] The headquarters of this portfolio company is located in Denmark.