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Borrowings - Schedule of Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Feb. 27, 2026	Dec. 31, 2025	Sep. 30, 2025	Feb. 12, 2025	Aug. 06, 2024	Aug. 05, 2024	Feb. 28, 2022	Mar. 01, 2021	Feb. 28, 2014
Debt Instrument [Line Items]
Total Commitment	$ 550,000		$ 675,000
Balance Outstanding	447,000		470,000
Unused Commitment	103,000		205,000
Unamortized deferred financing and issuance costs	(5,124)		(5,563)
Total borrowings outstanding, net of deferred financing and issuance costs	441,876		464,437
Unsecured Debt \| 2026 Notes
Debt Instrument [Line Items]
Total Commitment	0		200,000
Balance Outstanding	0		200,000
Unused Commitment	0		0
Stated interest rate									4.50%
Unsecured Debt \| 2027 Notes
Debt Instrument [Line Items]
Total Commitment	125,000		125,000
Balance Outstanding	125,000		125,000
Unused Commitment	0		0
Stated interest rate								5.00%
Unsecured Debt \| 8.11% 2028 Notes
Debt Instrument [Line Items]
Total Commitment	50,000		50,000
Balance Outstanding	50,000		50,000
Unused Commitment	$ 0		0
Stated interest rate	8.11%			9.11%	8.11%
Unsecured Debt \| 7.50% 2028 Notes
Debt Instrument [Line Items]
Total Commitment	$ 75,000		0
Balance Outstanding	75,000		0
Unused Commitment	$ 0		0
Stated interest rate	7.50%	7.50%
Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Total Commitment	$ 300,000		300,000			$ 300,000	$ 350,000			$ 150,000
Balance Outstanding	197,000		95,000
Unused Commitment	$ 103,000		$ 205,000