Fair Value Measurement of Investments - Schedule of Investment Measured on Recurring Basis, Unobservable Input Reconciliation (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 557,087	$ 273,593
Purchases of investments and other adjustments to cost	285,770	156,252
Proceeds from sales and repayments of investments	(114,244)	(8,988)
Net accretion of discount on investments	1,132	679
Ending balance	732,215	422,365
Net realized gain (loss)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized gain (loss) and net change in unrealized gain (loss) on investments	82	0
Net change in unrealized gain (loss) on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized gain (loss) and net change in unrealized gain (loss) on investments	2,388	829
Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized gain (loss) and net change in unrealized gain (loss) on investments	2,388	829
First Lien Senior Secured Loans | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	540,195	265,287
Purchases of investments and other adjustments to cost	252,190	156,156
Proceeds from sales and repayments of investments	(113,697)	(8,988)
Net accretion of discount on investments	1,132	679
Ending balance	679,742	413,732
First Lien Senior Secured Loans | Level 3 | Net realized gain (loss)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized gain (loss) and net change in unrealized gain (loss) on investments	82	0
First Lien Senior Secured Loans | Level 3 | Net change in unrealized gain (loss) on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized gain (loss) and net change in unrealized gain (loss) on investments	(160)	598
Subordinated Debt | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,712	1,753
Purchases of investments and other adjustments to cost	1,555	96
Proceeds from sales and repayments of investments	0	0
Net accretion of discount on investments	0	0
Ending balance	3,293	1,890
Subordinated Debt | Level 3 | Net realized gain (loss)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized gain (loss) and net change in unrealized gain (loss) on investments	0	0
Subordinated Debt | Level 3 | Net change in unrealized gain (loss) on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized gain (loss) and net change in unrealized gain (loss) on investments	26	41
Equity | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	12,028	4,901
Purchases of investments and other adjustments to cost	32,025	0
Proceeds from sales and repayments of investments	(547)	0
Net accretion of discount on investments	0	0
Ending balance	45,662	5,000
Equity | Level 3 | Net realized gain (loss)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized gain (loss) and net change in unrealized gain (loss) on investments	0	0
Equity | Level 3 | Net change in unrealized gain (loss) on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized gain (loss) and net change in unrealized gain (loss) on investments	2,156	99
Preferred Equity | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,652	1,652
Purchases of investments and other adjustments to cost	0	0
Proceeds from sales and repayments of investments	0	0
Net accretion of discount on investments		0
Ending balance	2,018	1,743
Preferred Equity | Level 3 | Net realized gain (loss)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized gain (loss) and net change in unrealized gain (loss) on investments	0	0
Preferred Equity | Level 3 | Net change in unrealized gain (loss) on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized gain (loss) and net change in unrealized gain (loss) on investments	366	91
Convertible note | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,500
Purchases of investments and other adjustments to cost	0
Proceeds from sales and repayments of investments	0
Net accretion of discount on investments	0
Ending balance	1,500
Convertible note | Level 3 | Net realized gain (loss)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized gain (loss) and net change in unrealized gain (loss) on investments	0
Convertible note | Level 3 | Net change in unrealized gain (loss) on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized gain (loss) and net change in unrealized gain (loss) on investments	0
Warrants | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0	0
Purchases of investments and other adjustments to cost	0	0
Proceeds from sales and repayments of investments	0	0
Net accretion of discount on investments	0	0
Ending balance	0	0
Warrants | Level 3 | Net realized gain (loss)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized gain (loss) and net change in unrealized gain (loss) on investments	0	0
Warrants | Level 3 | Net change in unrealized gain (loss) on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized gain (loss) and net change in unrealized gain (loss) on investments	$ 0	$ 0