Borrowings - Company's outstanding debt (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Feb. 03, 2023	Dec. 31, 2022	Dec. 20, 2022	Apr. 07, 2022
Borrowings
Total Aggregate Principal Amount Committed/ Outstanding	$ 907,886		$ 856,000
Principal Amount Outstanding	711,386		763,400
Carrying Value	699,683		751,486
Credit Facility
Borrowings
Total Aggregate Principal Amount Committed/ Outstanding	450,000		450,000
Principal Amount Outstanding	253,500		357,400
Carrying Value	251,413		354,904
Total unamortized debt issuance costs	2,087		2,496
Term Loan
Borrowings
Total Aggregate Principal Amount Committed/ Outstanding	151,886	$ 155,000	100,000	$ 100,000
Principal Amount Outstanding	151,886		100,000
Carrying Value	150,445		98,953
Total unamortized debt issuance costs	1,441		1,047
2022 ABS
Borrowings
Total Aggregate Principal Amount Committed/ Outstanding	306,000		306,000		$ 425,000
Principal Amount Outstanding	306,000		306,000
Carrying Value	297,825		297,629
Total unamortized debt issuance costs	8,175		8,371
Class C Senior Secured
Borrowings
Carrying Value	$ 36,125		$ 82,875