Servicing Rights - Key Assumptions and the Sensitivity of the Fair Value (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Servicing Assets at Fair Value [Line Items]
Aggregate portfolio principal balance	$ 911,065	$ 898,840
Base
Percentage of MSR (percent)	2.01%	2.07%
Mortgage servicing rights
Servicing Assets at Fair Value [Line Items]
Aggregate portfolio principal balance	$ 911,065	$ 898,840
Weighted average rate of note (percent)	3.54%	3.47%
Base
Constant prepayment rate (percent)	5.67%	6.64%
Discount rate (percent)	10.97%	11.25%
Fair value MSR	$ 18,303	$ 18,635	$ 15,422	$ 13,724
Percentage of MSR (percent)	2.01%	2.07%
1.0% Adverse Rate Change
Constant prepayment rate (percent)	5.71%	13.28%
Discount rate (percent)	9.97%	10.25%
Fair value MSR	$ 17,778	$ 14,763
Percentage of MSR (percent)	1.95%	1.64%
2.0% Adverse Rate Change
Constant prepayment rate (percent)	7.15%	19.92%
Discount rate (percent)	8.97%	9.25%
Fair value MSR	$ 16,869	$ 11,796
Percentage of MSR (percent)	1.85%	1.31%