Commitments and Contingencies - Activity in the Repurchase Reserve (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Commitments and Contingencies [Roll Forward]
Balance at beginning of period	$ 4,802	$ 5,928	$ 3,529
Provision for loan repurchases or indemnifications	(2,989)	(766)	2,607
Losses on loans repurchased or indemnified	(192)	(360)	(208)
Balance at end of period	$ 1,621	$ 4,802	$ 5,928