Fair Value Measurements - Reconciliation of Assets with Unobservable Inputs (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 16,195,000	$ 16,562,000
Change included in earnings	176,000	(2,179,000)
Purchases and issuances	5,370,000	10,756,000
Sales and settlements	(4,263,000)	(9,442,000)
Ending balance	17,478,000	15,697,000
Net change in unrealized gains (losses) relating to items held at end of period	965,000	2,713,000
Net change in unrealized gains (losses) included in other comprehensive income	0	0
Mortgage servicing rights
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	13,724,000	11,218,000
Change included in earnings	711,000	(1,009,000)
Purchases and issuances	987,000	1,448,000
Sales and settlements	0	0
Ending balance	15,422,000	11,657,000
Net change in unrealized gains (losses) relating to items held at end of period	0	0
Commercial servicing rights
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,084,000	1,310,000
Change included in earnings	(26,000)	(23,000)
Purchases and issuances	33,000	40,000
Sales and settlements	0	0
Ending balance	1,091,000	1,327,000
Net change in unrealized gains (losses) relating to items held at end of period	0	0
Interest rate lock commitments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,387,000	4,034,000
Change included in earnings	(509,000)	(1,147,000)
Purchases and issuances	4,350,000	9,268,000
Sales and settlements	(4,263,000)	(9,442,000)
Ending balance	965,000	2,713,000
Net change in unrealized gains (losses) relating to items held at end of period	$ 965,000	$ 2,713,000