Servicing Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Transfers and Servicing [Abstract]
Total servicing assets	$ 6,166		$ 6,166		$ 6,798
Loans sold with servicing rights retained	8,600	$ 22,200	47,100	$ 72,500
Net gain on sale	689	1,500	2,800	4,500
Loan servicing income	$ 856	$ 534	$ 2,300	$ 1,700