Liability for Losses Under Representations and Warranties (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
During the period:
Balance at beginning of period	$ 31,103	$ 42,794	$ 32,421	$ 43,521
Provision for losses on loans sold resulting from sales of loans	3,139	2,182	4,874	6,236
Provision for losses on loans sold resulting from change in estimate	(2,008)	(2,227)	(3,453)	(5,396)
Losses incurred, net	(2,088)	(3,413)	(3,696)	(5,025)
Balance at end of period	30,146	39,336	30,146	39,336
Unpaid principal balance of loans subject to representations and warranties at end of period	$ 320,986,649	$ 278,793,884	$ 320,986,649	$ 278,793,884