Commitments and Contingencies - Schedule of Commitments To Fund Investments In Current Portfolio Companies (Details) - USD ($) $ in Thousands		Jun. 30, 2025	Dec. 31, 2024
Loss Contingencies [Line Items]
Total Portfolio Company Commitments	[1],[2]	$ 870,158	$ 1,050,384
Revolver | Artisan Bidco, Inc
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		10,413	16,886
Revolver | Avalara, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		0	13,636
Revolver | AVSC Holding Corp.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		26,580	33,830
Revolver | Big Wombat Holdings, Inc
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		706	0
Revolver | Disco Parent, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		5,776	5,776
Revolver | Elysium BidCo Limited
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		0	19,289
Revolver | Greenshoot Bidco B.V.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		461	407
Revolver | Galileo Parent Inc
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		8,077	12,788
Revolver | HireVue, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		6,956	5,141
Revolver | Ingenovis Health Finance, LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		10,000	0
Revolver | Kryptona BidCo US, LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		14,674	14,674
Revolver | Raptor US Buyer II Corp [Member]
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		4,318	4,318
Revolver | SMA Technologies Holdings, LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		3,991	3,991
Revolver | Sport Alliance GmbH
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		489	647
Revolver | Sapphire Software Buyer, Inc
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		27,027	27,027
Delayed Draw & Revolver | Alaska Bidco Oy
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		245	217
Delayed Draw & Revolver | Aptean, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		0	15,757
Delayed Draw & Revolver | BTRS Holdings, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		0	9,086
Delayed Draw & Revolver | Coupa Holdings, LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		20,427	20,428
Delayed Draw & Revolver | Edge Bidco BV
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		1,126	993
Delayed Draw & Revolver | Erling Lux Bidco SARL
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		6,541	2,772
Delayed Draw & Revolver | Eventus Buyer, LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		16,157	18,777
Delayed Draw & Revolver | Fullsteam Operations LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		39,196	70,282
Delayed Draw & Revolver | Heritage Environmental Services, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		27,020	28,485
Delayed Draw & Revolver | Hippo XPA Bidco AB
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		9,509	1,697
Delayed Draw & Revolver | Merit Software Finance Holdings LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		3,214	3,214
Delayed Draw & Revolver | PDI TA Holdings, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		7,941	26,516
Delayed Draw & Revolver | Rail Acquisitions LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		7,076	0
Delayed Draw & Revolver | Lynx BidCo
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		25,077	25,077
Delayed Draw & Revolver | Rapid Data GmbH Unternehmensberatung
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		1,615	1,425
Delayed Draw & Revolver | Severin Acquisition, LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		45,212	72,475
Delayed Draw & Revolver | Truck-Lite Co., LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		41,618	61,202
Delayed Draw & Revolver | Tango Management Consulting, LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		6,620	0
Delayed Draw & Revolver | USA Debusk LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		39,160	42,137
Delayed Draw & Revolver | Wrangler Topco, LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		20,065	32,377
Delayed Draw | Apellis Pharmaceuticals, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		42,105	42,105
Delayed Draw | Arrow Buyer, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		0	20,157
Delayed Draw | Arrowhead Pharmaceuticals, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		125,751	135,222
Delayed Draw | Babylon Finco Limited
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		0	16,527
Delayed Draw | Banyan Software Holdings, LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		0	19,491
Delayed Draw | BCTO Bluebill Buyer, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		1,074	1,074
Delayed Draw | Ben Nevis Midco Limited
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		0	27,307
Delayed Draw | Cirrus (Bidco) Limited
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		457	417
Delayed Draw | Cordance Operations LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		50,000	0
Delayed Draw | Flight Intermediate HoldCo, Inc
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		40,231	44,012
Delayed Draw | Kangaroo Bidco A S
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		22,500	22,500
Delayed Draw | QSR Acquisition Co
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		0	5,000
Delayed Draw | RainFocus, LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		1,410	0
Delayed Draw | Scorpio Bidco
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		17,225	15,195
Delayed Draw | SkyLark UK DebtCo
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		41,281	24,084
Delayed Draw | SL Buyer Corp
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		0	1,258
Delayed Draw | Shiftmove GmbH
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		6,847	6,040
Delayed Draw | Sky Bidco S.p.A
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		33,606	29,645
Delayed Draw | Varinem German Bidco GmbH
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		4,914	3,553
Revolver & Equity | Azurite Intermediate Holdings, Inc
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		29,175	29,175
Revolver & Equity | Crewline Buyer, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		$ 16,295	$ 16,295

[1] Represents the full amount of the Company’s commitments to fund investments on such date. Commitments may be subject to limitations on borrowings set forth in the agreements between the Company and the applicable portfolio company. As a result, portfolio companies may not be eligible to borrow the full commitment amount on such date.

[2] The Company’s estimate of the fair value of the current investments in these portfolio companies includes an analysis of the fair value of any unfunded commitments.