Commitments and Contingencies - Schedule of Commitments To Fund Investments In Current Portfolio Companies (Details) - USD ($) $ in Thousands		Sep. 30, 2023	Dec. 31, 2022
Loss Contingencies [Line Items]
Total Portfolio Company Commitments	[1],[2]	$ 273,804	$ 62,983
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		5,776
Revolver | Galileo Parent Inc
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		13,125
Revolver | Hirevue, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		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
Delayed Draw & Revolver | Alaska Bidco Oy
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		222
Delayed Draw & Revolver | BTRS Holdings, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		21,716	25,915
Delayed Draw & Revolver | Coupa Holdings, LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		20,427
Delayed Draw & Revolver | Edge Bidco B.V
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		1,312
Delayed Draw & Revolver | Erling Lux Bidco SARL
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		3,052	5,618
Delayed Draw & Revolver | Hornetsecurity Holding GmbH
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		2,025	2,041
Delayed Draw & Revolver | Rapid Data GmbH Unternehmensberatung
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		5,994
Delayed Draw & Revolver | SkyLark UK DebtCo
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		48,586
Delayed Draw | Arrow Buyer, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		28,126
Delayed Draw | Banyan Software Holdings, LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		40,000
Delayed Draw | BCTO Bluebill Buyer, Inc.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		1,448
Delayed Draw | Laramie Energy, LLC
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		27,439
Delayed Draw | OutSystems Luxco SARL
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		2,120	$ 2,137
Delayed Draw | SL Buyer Corp.
Loss Contingencies [Line Items]
Total Portfolio Company Commitments		$ 1,475

[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.