Summary Of Significant Accounting Policies (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Jan. 01, 2023	Dec. 31, 2022	Dec. 31, 2021
Accounting Policies [Line Items]
Securities sold under agreements to repurchase with original maturities exceeding three months	$ 0
Other real estate owned, excluding covered other real estate owned	13,300,000		$ 9,900,000
Bank-owned life insurance	160,200,000		157,300,000
Allowance for loan losses and unfunded lending-related commitments losses	$ 427,265,000		357,448,000	$ 299,653,000
Cumulative Effect, Period of Adoption, Adjustment
Accounting Policies [Line Items]
Allowance for loan losses and unfunded lending-related commitments losses			$ 741,000
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2022-02
Accounting Policies [Line Items]
Allowance for loan losses and unfunded lending-related commitments losses		$ 741,000
Land improvements
Accounting Policies [Line Items]
Premises and equipment, useful lives	15 years
Maximum
Accounting Policies [Line Items]
Lease term	7 years
Intangible assets with finite lives, amortization period	20 years
Maximum | Furniture, fixtures and equipment
Accounting Policies [Line Items]
Premises and equipment, useful lives	15 years
Maximum | Software and computer-related equipment
Accounting Policies [Line Items]
Premises and equipment, useful lives	7 years
Maximum | Buildings and improvements
Accounting Policies [Line Items]
Premises and equipment, useful lives	39 years
Minimum
Accounting Policies [Line Items]
Tax benefit realized on settlement	50.00%
Minimum | Furniture, fixtures and equipment
Accounting Policies [Line Items]
Premises and equipment, useful lives	2 years
Minimum | Software and computer-related equipment
Accounting Policies [Line Items]
Premises and equipment, useful lives	2 years
Minimum | Buildings and improvements
Accounting Policies [Line Items]
Premises and equipment, useful lives	7 years