Liability for Losses Under Representations and Warranties (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
During the period:
Balance at beginning of period	$ 30,146	$ 39,336	$ 32,421	$ 43,521
Provision for losses on loans sold resulting from sales of loans	4,011	1,651	8,885	7,887
Provision for losses on loans sold resulting from change in estimate	(2,552)	(1,769)	(6,005)	(7,165)
Losses incurred, net	(1,114)	(2,031)	(4,810)	(7,056)
Balance at end of period	30,491	37,187	30,491	37,187
Unpaid principal balance of loans subject to representations and warranties at end of period	$ 335,044,546	$ 285,532,190	$ 335,044,546	$ 285,532,190