Commitments and Contingencies - Activity in the Repurchase Reserve (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Commitments and Contingencies [Roll Forward]
Balance at beginning of period	$ 4,317	$ 6,284	$ 4,802	$ 5,928
Provision for loan repurchases or indemnifications	(800)	(706)	(1,189)	(266)
Losses on loans repurchased or indemnified	(72)	(89)	(168)	(173)
Balance at end of period	$ 3,445	$ 5,489	$ 3,445	$ 5,489