Mortgage Servicing Rights - Summary of Carrying Value Under the Amortization Method (Details) - Mortgage Servicing Rights - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Mortgage Servicing Rights Accounted for Under the Amortization Method (Rollforward)
Balance at Beginning of Period	$ 23,187	$ 21,401	$ 21,451	$ 18,694
Servicing Rights that Resulted From Asset Transfers	205	1,260	956	2,940
Amortization	(599)	(996)	(1,443)	(2,159)
Valuation Allowance Recovery (Provision)	0	(1,067)	1,829	1,123
Balance at End of Period	22,793	20,598	22,793	20,598
Balance at Beginning of Period		(1,702)	(1,829)	(3,892)
Valuation Allowance Recovery (Provision)	0	(1,067)	1,829	1,123
Balance at End of Period		(2,769)		(2,769)
Fair Value of Mortgage Servicing Rights Accounted for Under the Amortization Method
Beginning of Period	26,088	21,401	21,451	18,694
End of Period	$ 28,314	$ 20,598	$ 28,314	$ 20,598