Fair Value Measurements - Reconciliation of Assets with Unobservable Inputs (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 21,238,000	$ 19,937,000	$ 21,204,000	$ 16,195,000
Change included in earnings	(616,000)	(300,000)	(2,642,000)	(915,000)
Purchases and issuances	3,497,000	4,312,000	8,826,000	14,673,000
Sales and settlements	(2,087,000)	(4,819,000)	(5,356,000)	(10,823,000)
Ending balance	22,032,000	19,130,000	22,032,000	19,130,000
Net change in unrealized gains (losses) relating to items held at end of period	518,000	354,000	518,000	354,000
Net change in unrealized gains (losses) included in other comprehensive income	0	0	0	0
Mortgage servicing rights
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	18,248,000	16,301,000	18,635,000	13,724,000
Change included in earnings	(310,000)	145,000	(1,679,000)	607,000
Purchases and issuances	1,458,000	1,263,000	2,440,000	3,378,000
Sales and settlements	0	0	0	0
Ending balance	19,396,000	17,709,000	19,396,000	17,709,000
Net change in unrealized gains (losses) relating to items held at end of period	0	0	0	0
Commercial servicing rights
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	2,139,000	1,069,000	2,129,000	1,084,000
Change included in earnings	(39,000)	(75,000)	(144,000)	(123,000)
Purchases and issuances	18,000	73,000	133,000	106,000
Sales and settlements	0	0	0	0
Ending balance	2,118,000	1,067,000	2,118,000	1,067,000
Net change in unrealized gains (losses) relating to items held at end of period	0	0	0	0
Interest rate lock commitments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	851,000	2,567,000	440,000	1,387,000
Change included in earnings	(267,000)	(370,000)	(819,000)	(1,399,000)
Purchases and issuances	2,021,000	2,976,000	6,253,000	11,189,000
Sales and settlements	(2,087,000)	(4,819,000)	(5,356,000)	(10,823,000)
Ending balance	518,000	354,000	518,000	354,000
Net change in unrealized gains (losses) relating to items held at end of period	$ 518,000	$ 354,000	$ 518,000	$ 354,000