Servicing Rights - Mortgage Servicing Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Servicing Asset at Fair Value, Amount [Roll Forward]
Balance, beginning of period			$ 11,920
Additions for new MSR capitalized			1,659	$ 1,639
Changes in fair value:
Balance, end of period	$ 10,721		10,721
Balance of mortgage loans serviced for others	$ 655,183		$ 655,183		$ 659,048
MSR as a percentage of serviced loans	1.64%		1.64%		1.81%
Mortgage servicing rights
Servicing Asset at Fair Value, Amount [Roll Forward]
Balance, beginning of period	$ 11,653	$ 11,254	$ 11,920	10,821
Additions for new MSR capitalized	996	532	1,659	1,639
Changes in fair value:
Due to changes in model inputs of assumptions	(891)	(630)	(1,592)	(1,007)
Other	(1,037)	(320)	(1,266)	(617)
Balance, end of period	10,721	$ 10,836	10,721	$ 10,836
Balance of mortgage loans serviced for others	$ 655,183		$ 655,183		$ 659,048
MSR as a percentage of serviced loans	1.64%		1.64%		1.81%