Lease Commitments - Supplemental Balance Sheet and Cash Flow Information Related to Operating Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Operating lease right-of-use assets	$ 46,772	$ 47,500
Other assets	Other assets	Other assets
Operating lease liabilities	$ 50,545	$ 50,770
Other liabilities	Other liabilities	Other liabilities	Other liabilities
Cash paid during the year for amounts included in the measurement of operating lease liabilities	$ 10,005	$ 16,508
Right-of-use assets recorded during the year in exchange for new or renewed operating lease obligations	4,139	5,305
Right-of-use assets obtained during the year through bank acquisition	$ 3,909	$ 14,597
Weighted average remaining lease term for operating leases	7 years	8 years
Weighted average discount rate for operating leases	4.94%	4.64%