Fair Value Measurements - Schedule of Information on Assets and Liabilities Measured and Recorded at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Assets
Loans held for investment, at fair value	$ 1,306,072	$ 276,095
Mortgage servicing rights	8,578	9,238	$ 7,152
Loans held for sale, at fair value	17,590
Total assets	1,376,508	310,124
Real estate owned, net	44,268	13,325
Liabilities
Securitized debt at fair value	877,417
Derivative liabilities	3,665
Total liabilities	881,082
Recurring Fair Value Measurements
Assets
Loans held for investment, at fair value	1,306,072	276,095
Mortgage servicing rights	8,578	9,238
Loans held for sale, at fair value	17,590
Total assets	1,332,240	285,333
Liabilities
Securitized debt at fair value	877,417
Derivative liabilities	3,665
Total liabilities	881,082
Nonrecurring Fair Value Measurements
Assets
Total assets	44,268	24,791
Real estate owned, net	44,268	13,325
Individually evaluated loans requiring specific allowance, net	8,475	11,466
Level 2
Assets
Total assets	17,590
Liabilities
Securitized debt at fair value	877,417
Total liabilities	881,082
Level 2 | Recurring Fair Value Measurements
Assets
Loans held for sale, at fair value	17,590
Total assets	17,590
Liabilities
Securitized debt at fair value	877,417
Derivative liabilities	3,665
Total liabilities	881,082
Level 3
Assets
Total assets	1,367,393	310,124
Level 3 | Recurring Fair Value Measurements
Assets
Loans held for investment, at fair value	1,306,072	276,095
Mortgage servicing rights	8,578	9,238
Total assets	1,314,650	285,333
Level 3 | Nonrecurring Fair Value Measurements
Assets
Total assets	52,743	24,791
Real estate owned, net	44,268	13,325
Individually evaluated loans requiring specific allowance, net	$ 8,475	$ 11,466