Liability for Losses Under Representations and Warranties (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
During the year:
Balance at beginning of year	$ 32,421	$ 43,521	$ 32,688
Provision for losses on loans sold resulting from sales of loans	12,997	9,617	31,590
Provision for losses on loans sold resulting from change in estimate	(9,115)	(8,451)	(16,037)
Losses incurred, net	(5,515)	(12,266)	(4,720)
Balance at end of year	30,788	32,421	43,521
Unpaid principal balance of loans subject to representations and warranties at end of year	$ 354,423,684	$ 296,774,121	$ 257,369,777