Transfers of Financial Assets Servicing Assets at Amortized Cost Roll Forward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Beginning balance	$ 13,422	$ 17,484	$ 21,215
Additions	2,053	4,373	3,587
Amortization	(5,593)	(6,562)	(7,318)
Adjustment to valuation allowance	(645)	(1,873)	0
Ending balance	$ 9,237	$ 13,422	$ 17,484