Fair Value Measurement - Sensitivity of Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Loans (at fair value)
Discount rates
100 basis point increase	$ (11,508)	$ (11,979)
200 basis point increase	(22,790)	(23,720)
Expected credit loss rates on underlying loans
10% adverse change	(11,686)	(11,927)
20% adverse change	(23,375)	(23,852)
Expected prepayment rates
10% adverse change	(2,238)	(2,284)
20% adverse change	(4,435)	(4,530)
Fair Value, Inputs, Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of loans	982,229	1,010,421
Fair Value, Inputs, Level 3 | Loans (at fair value)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of loans	$ 982,229	$ 1,010,421