Borrowings - Schedule of Borrowings (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Carrying Value	$ 372,000	$ 337,000
Borrowings
Debt Instrument [Line Items]
Total Commitment	722,250	647,250
Principal	594,250	559,250
Deferred Debt Cost	(10,327)	(10,293)
Carrying Value	583,923	548,957
Borrowings | Credit Facility
Debt Instrument [Line Items]
Total Commitment	500,000	425,000
Principal	372,000	337,000
Deferred Debt Cost	(4,968)	(4,640)
Carrying Value	367,032	332,360
Borrowings | December 2026 Notes
Debt Instrument [Line Items]
Total Commitment	70,000	70,000
Principal	70,000	70,000
Deferred Debt Cost	(766)	(818)
Carrying Value	69,234	69,182
Borrowings | July 2027 Notes
Debt Instrument [Line Items]
Total Commitment	80,500	80,500
Principal	80,500	80,500
Deferred Debt Cost	(2,251)	(2,380)
Carrying Value	78,249	78,120
Borrowings | August 2027 Notes
Debt Instrument [Line Items]
Total Commitment	20,000	20,000
Principal	20,000	20,000
Deferred Debt Cost	(618)	(653)
Carrying Value	19,382	19,347
Borrowings | December 2027 Notes
Debt Instrument [Line Items]
Total Commitment	51,750	51,750
Principal	51,750	51,750
Deferred Debt Cost	(1,724)	(1,802)
Carrying Value	$ 50,026	$ 49,948