Premises and Equipment (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Premises and Equipment, Gross	$ 235,512,000	$ 229,335,000
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	161,301,000	147,209,000
Property, Plant and Equipment, Net	74,211,000	82,126,000
Depreciation, Depletion and Amortization, Nonproduction	14,000,000	13,800,000	$ 13,300,000
Property Subject to or Available for Operating Lease, Gross	4,691,000	4,427,000
Property Subject to or Available for Operating Lease, Accumulated Depreciation	2,385,000	3,162,000
Property Subject to or Available for Operating Lease, Net	2,306,000	1,265,000
Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease	693,000	1,100,000	$ 1,500,000
Land [Member]
Property, Plant and Equipment [Line Items]
Premises and Equipment, Gross	22,176,000	22,139,000
Building [Member]
Property, Plant and Equipment [Line Items]
Premises and Equipment, Gross	98,472,000	97,510,000
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Premises and Equipment, Gross	79,662,000	77,446,000
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and Equipment, Gross	5,684,000	3,575,000
Software and Software Development Costs
Property, Plant and Equipment [Line Items]
Premises and Equipment, Gross	$ 29,518,000	$ 28,665,000