Servicing Rights - Mortgage Servicing Rights (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Changes in fair value:
Balance of mortgage loans serviced for others	$ 911,065		$ 898,840
MSR as a percentage of serviced loans	2.01%		2.07%
Mortgage servicing rights
Servicing Asset at Fair Value, Amount [Roll Forward]
Balance, beginning of period	$ 18,635	$ 13,724
Additions for new MSR capitalized	463	987
Changes in fair value:
Due to changes in model inputs of assumptions	(212)	1,192
Other	(583)	(481)
Balance, end of period	18,303	$ 15,422
Balance of mortgage loans serviced for others	$ 911,065		$ 898,840
MSR as a percentage of serviced loans	2.01%		2.07%