Lease Commitments - Supplemental Balance Sheet and Cash Flow Information Related to Operating Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease right-of-use assets	$ 35,256	$ 25,538
Other assets	Other assets	Other assets	Other assets
Operating lease liabilities	$ 38,330	$ 28,959
Other liabilities	Other liabilities	Other liabilities	Other liabilities
Cash paid during the year for amounts included in the measurement of operating lease liabilities	$ 11,117	$ 6,035
Right-of-use assets recorded during the year in exchange for new or renewed operating lease obligations	12,459	2,095
Right-of-use assets obtained during the year through bank acquisition	$ 2,606	$ 2,343
Weighted average remaining lease term for operating leases	8 years 3 months 18 days	8 years 6 months
Weighted average discount rate for operating leases	4.25%	4.62%