Guarantees - Changes from credit recourses agreements (Details) - Guarantee on loans sold or serviced with credit recourse - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Guarantor Obligations
Balance as of beginning of period	$ 10,335	$ 20,244	$ 11,800	$ 22,484
Provision (benefit) for recourse liability	(395)	(1,568)	(349)	(751)
Net charge-offs	(845)	(3,014)	(2,356)	(6,071)
Balance as of end of period	$ 9,095	$ 15,662	$ 9,095	$ 15,662