Servicing Rights - Key Assumptions and the Sensitivity of the Fair Value (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Servicing Assets at Fair Value [Line Items]
Balance of mortgage loans serviced for others	$ 1,460,720,000	$ 1,044,516,000
Weighted average rate of note	4.46%	4.03%
MSR as a percentage of serviced loans	1.81%	1.87%
Mortgage servicing rights
Servicing Assets at Fair Value [Line Items]
Mortgage servicing rights, at fair value	$ 26,439,000	$ 19,564,000	$ 18,635,000	$ 13,724,000
Expected weighted-average life (in years)	9 years 6 months 3 days	10 years 2 months 23 days
Key assumptions:
Constant prepayment rate (percent)	9.09%	8.48%
Constant prepayment rate, impact on fair value from 10% adverse change	$ (935,000)	$ (1,754,000)
Constant prepayment rate, impact on fair value from 25% adverse change	$ (2,222,000)	$ (2,552,000)
Discount rate (percent)	10.99%	10.98%
Discount rate, impact on fair value from 100 basis point increase	$ (1,592,000)	$ (811,000)
Discount rate, impact on fair value from 200 basis point increase	(2,544,000)	(1,560,000)
Cost to service assumptions ($ per loan)	81	82
Cost to service assumptions, impact on fair value from 10% adverse change	(235,000)	(160,000)
Cost to service assumptions, impact on fair value from 25% adverse change	$ (588,000)	$ (401,000)