Commitments and Contingencies - Schedule of Commitments To Fund Investments In Current Portfolio Companies (Details) - USD ($) $ in Thousands		Mar. 31, 2024	Dec. 31, 2023
Loss Contingencies [Line Items]
Total Portfolio Company Commitments	[1],[2]	$ 895,444	$ 358,502
Revolver | Artisan Bidco, Inc
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		16,886	21,283
Revolver | Avalara, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		13,636	13,636
Revolver | Disco Parent, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		5,775	5,776
Revolver | Galileo Parent Inc
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		13,125	15,817
Revolver | Heritage Environmental Services, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		21,219
Revolver | Hirevue, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		11,290	14,113
Revolver | Ping Identity Holding Corp.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		13,636	13,636
Revolver | Wrangler TopCo, LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		9,576	9,576
Delayed Draw & Revolver | Alaska Bidco Oy
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		226	231
Delayed Draw & Revolver | Aptean, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		29,095
Delayed Draw & Revolver | BTRS Holdings, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		11,647	16,689
Delayed Draw & Revolver | Coupa Holdings, LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		20,427	20,427
Delayed Draw & Revolver | Edge Bidco BV
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		1,036	1,060
Delayed Draw & Revolver | Erling Lux Bidco SARL
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		10,907	3,184
Delayed Draw & Revolver | Fullsteam Operations LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		67,336	31,239
Delayed Draw & Revolver | Hippo XPA Bidco AB
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		4,384
Delayed Draw & Revolver | Hornetsecurity Holding GmbH
Loss Contingencies [Line Items]
Total Portfolio Company Commitments			2,113
Delayed Draw & Revolver | PDI TA Holdings, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		63,810
Delayed Draw & Revolver | Rapid Data GmbH Unternehmensberatung
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		6,114	6,255
Delayed Draw & Revolver | Truck-Lite Co., LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		68,780
Delayed Draw | Arrow Buyer, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		20,157	28,125
Delayed Draw | Babylon Finco Limited
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		16,527
Delayed Draw | Banyan Software Holdings, LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		108,473	20,073
Delayed Draw | BCTO Bluebill Buyer, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		1,202	1,325
Delayed Draw | Ben Nevis Midco Limited
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		34,071
Delayed Draw | Kangaroo Bidco AS
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		22,500	53,817
Delayed Draw | Laramie Energy, LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		27,439	27,439
Delayed Draw | OutSystems Luxco SARL
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		2,163	2,212
Delayed Draw | SkyLark UK DebtCo
Loss Contingencies [Line Items]
Total Portfolio Company Commitments			28,192
Delayed Draw | SkyLark UK DebtCo Limited
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		24,293
Delayed Draw | SL Buyer Corp
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		1,431	1,475
Delayed Draw, Revolver & Equity | Azurite Intermediate Holdings, Inc
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		231,988
Revolver & Equity | Crewline Buyer, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		$ 16,295	$ 20,809

[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.