Premises and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Premises and Equipment, Gross	$ 226,929	$ 215,543
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	137,921	126,883
Property, Plant and Equipment, Net	89,008	88,660
Depreciation, Depletion and Amortization, Nonproduction	13,300	10,800	$ 9,100
Property Subject to or Available for Operating Lease, Gross	7,298	8,561
Property Subject to or Available for Operating Lease, Accumulated Depreciation	4,860	4,665
Property Subject to or Available for Operating Lease, Net	2,438	3,896
Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease	1,500	1,800	$ 1,300
Land [Member]
Property, Plant and Equipment [Line Items]
Premises and Equipment, Gross	21,992	22,421
Building [Member]
Property, Plant and Equipment [Line Items]
Premises and Equipment, Gross	97,128	97,351
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Premises and Equipment, Gross	76,675	89,390
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and Equipment, Gross	6,436	$ 6,381
Software and Software Development Costs
Property, Plant and Equipment [Line Items]
Premises and Equipment, Gross	$ 24,698