Goodwill, Core Deposit Intangible and Other Intangible Assets - Summary of Changes in Goodwill, Core Deposit Intangible Assets and Customer Relationship Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Schedule Of Goodwill And Intangible Assets [Line Items]
Beginning balance, Goodwill	$ 148,353	$ 148,353	$ 148,353	$ 148,353
Ending balance, Goodwill	148,353	148,353	148,353	148,353
Amortization	(1,868)	(1,848)	(3,464)	$ (3,597)
Weighted average remaining amortization period				8 years 9 months 18 days
Core Deposits
Schedule Of Goodwill And Intangible Assets [Line Items]
Ending balance, Goodwill	11,945		11,945
Beginning balance	13,475	20,126	15,004	$ 21,809
Amortization	(1,530)	(1,780)	(3,059)	(3,463)
Ending balance		18,346		18,346
Accumulated amortization	$ 43,521	$ 37,120	$ 43,521	$ 37,120
Weighted average remaining amortization period	4 years 6 months	5 years 2 months 12 days	4 years 6 months	5 years 2 months 12 days
Customer Relationships
Schedule Of Goodwill And Intangible Assets [Line Items]
Beginning balance	$ 2,134	$ 2,403	$ 2,201	$ 2,469
Amortization	(338)	(68)	(405)	(134)
Ending balance	1,796	2,335	1,796	2,335
Accumulated amortization	$ 1,420	$ 881	$ 1,420	$ 881
Weighted average remaining amortization period	6 years 9 months 18 days	8 years 9 months 18 days	6 years 9 months 18 days