Commitments and Contingencies - Summary of Payments Due by Period (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Commitments And Contingencies [LineItems]
Borrowings, 1-3 years	$ 332,000	$ 367,000
Borrowings, 3-5 years	152,250	152,250
Deferred Incentive Fees	13,836	12,500
Deferred Incentive Fees, Less than 1 Year	481	2,567
Deferred Incentive Fees, 1-3 years	5,915	3,919
Deferred Incentive Fees, 3-5 years	3,689	2,548
Deferred Incentive Fees, More than 5 Years	131	131
Commitments	494,466	528,415
Commitments, Less than 1 Year	481	2,567
Commitments, 1-3 years	337,915	370,919
Commitments, 3-5 years	155,939	154,798
Commitments, More than 5 Years	131	131
Unsecured Debt | 2026 Notes
Commitments And Contingencies [LineItems]
Borrowings	95,000	95,000
Borrowings, 1-3 years	95,000	95,000
Unsecured Debt | 2027 Notes
Commitments And Contingencies [LineItems]
Borrowings	152,250	152,250
Borrowings, 3-5 years	152,250	152,250
Credit Facility
Commitments And Contingencies [LineItems]
Borrowings	237,000	272,000
Borrowings, 1-3 years	237,000	272,000
Deferred Payments | Advisory Agreement
Commitments And Contingencies [LineItems]
Deferred Incentive Fees	10,216	9,165	$ 10,200
Borrowings
Commitments And Contingencies [LineItems]
Borrowings	484,250	519,250
Borrowings | Credit Facility
Commitments And Contingencies [LineItems]
Borrowings	$ 237,000	$ 272,000