Commitments and Contingencies - Activity in the Repurchase Reserve (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Commitments and Contingencies [Roll Forward]
Balance at beginning of period	$ 1,621	$ 4,802
Provision for loan repurchases or indemnifications	(250)	(389)
Losses on loans repurchased or indemnified	(13)	(96)
Balance at end of period	$ 1,358	$ 4,317