Fair Value Measurements - Reconciliation of Assets with Unobservable Inputs (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 19,937,000	$ 17,171,000	$ 16,195,000	$ 16,562,000
Change included in earnings	(300,000)	(2,383,000)	(915,000)	(6,049,000)
Purchases and issuances	4,312,000	9,175,000	14,673,000	28,877,000
Sales and settlements	(4,819,000)	(6,357,000)	(10,823,000)	(21,784,000)
Ending balance	19,130,000	17,606,000	19,130,000	17,606,000
Net change in unrealized gains (losses) relating to items held at end of period	354,000	3,248,000	354,000	3,248,000
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	16,301,000	12,835,000	13,724,000	11,218,000
Change included in earnings	145,000	(1,458,000)	607,000	(3,034,000)
Purchases and issuances	1,263,000	1,703,000	3,378,000	4,896,000
Sales and settlements	0	0	0	0
Ending balance	17,709,000	13,080,000	17,709,000	13,080,000
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	1,069,000	1,292,000	1,084,000	1,310,000
Change included in earnings	(75,000)	(58,000)	(123,000)	(134,000)
Purchases and issuances	73,000	44,000	106,000	102,000
Sales and settlements	0	0	0	0
Ending balance	1,067,000	1,278,000	1,067,000	1,278,000
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	2,567,000	3,044,000	1,387,000	4,034,000
Change included in earnings	(370,000)	(867,000)	(1,399,000)	(2,881,000)
Purchases and issuances	2,976,000	7,428,000	11,189,000	23,879,000
Sales and settlements	(4,819,000)	(6,357,000)	(10,823,000)	(21,784,000)
Ending balance	354,000	3,248,000	354,000	3,248,000
Net change in unrealized gains (losses) relating to items held at end of period	$ 354,000	$ 3,248,000	$ 354,000	$ 3,248,000