Servicing Rights - Key Assumptions and the Sensitivity of the Fair Value (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021	Jun. 30, 2022	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Servicing Assets at Fair Value [Line Items]
Aggregate portfolio principal balance	$ 859,288	$ 772,764
Base
Percentage of MSR (percent)	2.06%	1.78%
Mortgage servicing rights
Servicing Assets at Fair Value [Line Items]
Aggregate portfolio principal balance	$ 859,288	$ 772,764
Weighted average rate of note (percent)	3.36%	3.31%
Base
Constant prepayment rate (percent)	7.27%	11.80%
Discount rate (percent)	10.00%	8.00%
Fair value MSR	$ 17,709	$ 13,724	$ 16,301	$ 13,080	$ 12,835	$ 11,218
Percentage of MSR (percent)	2.06%	1.78%
1.0% Adverse Rate Change
Constant prepayment rate (percent)	14.54%	23.59%
Discount rate (percent)	9.00%	7.00%
Fair value MSR	$ 14,009	$ 9,612
Percentage of MSR (percent)	1.63%	1.24%
2.0% Adverse Rate Change
Constant prepayment rate (percent)	21.82%	34.57%
Discount rate (percent)	8.00%	6.00%
Fair value MSR	$ 11,560	$ 7,256
Percentage of MSR (percent)	1.35%	0.94%