Fair Value - Summary of the Changes in Fair Value of Level 3 Assets (Details) - USD ($) $ in Thousands		3 Months Ended		11 Months Ended	12 Months Ended
		Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2023	Dec. 31, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance		$ 38,271	$ 21,654		$ 21,654
Total gains or losses included in earnings:
Net realized gain (loss)		0			13
Net change in unrealized gain (loss)		(180)	121		549
Purchase of investment securities	[1]	6,032			27,483
Proceeds from dispositions of investment securities		(6,523)			(11,428)
Transfers into Level 3		0			0
Transfers out of Level 3		0			0
Ending balance		$ 37,600		$ 21,654	38,271
Unrealized gains for the period relating to those Level 3 assets that were still held by the Company at the end of the period:
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]		Net change in unrealized gain (loss)		Net change in unrealized gain (loss)
Net change in unrealized gain (loss)		$ 12			568
Bank Debt And Senior Secured Loans
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance		38,271	21,651		21,651
Total gains or losses included in earnings:
Net realized gain (loss)		0			9
Net change in unrealized gain (loss)		(180)			549
Purchase of investment securities	[1]	6,032			27,483
Proceeds from dispositions of investment securities		(6,523)			(11,421)
Transfers into Level 3		0			0
Transfers out of Level 3		0			0
Ending balance		37,600		$ 21,651	38,271
Unrealized gains for the period relating to those Level 3 assets that were still held by the Company at the end of the period:
Net change in unrealized gain (loss)		12			568
Warrants
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance		$ 0	$ 3		3
Total gains or losses included in earnings:
Net realized gain (loss)					4
Net change in unrealized gain (loss)					0
Purchase of investment securities	[1]				0
Proceeds from dispositions of investment securities					(7)
Transfers into Level 3					0
Transfers out of Level 3					0
Ending balance				$ 3	0
Unrealized gains for the period relating to those Level 3 assets that were still held by the Company at the end of the period:
Net change in unrealized gain (loss)					$ 0

[1] * Includes PIK capitalization and accretion of discount.