Fair Value Measurements (Schedule Of Estimates Of Fair Value Of Financial Instruments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-sale	$ 1,505,520	$ 1,408,165
Other Investment Securities	$ 23,807	25,531
Derivative Asset Statement Of Financial Position Extensible Enumeration Not Disclosed Flag	Derivative assets
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Derivative Liability Statement Of Financial Position Extensible Enumeration Not Disclosed Flag	Derivative liabilities
Carrying Amount
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	$ 200,000	634,631
Debt Securities, Available-for-sale	1,505,520	1,408,165
Other Investment Securities	7,569	9,211
Loans Receivable, Fair Value Disclosure	3,629,150	3,525,648
Accrued Interest Receivable Fair Value Disclosure	18,287	15,627
Derivative Asset	81,838	29,029
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Deposits, Fair Value Disclosure	4,869,866	4,925,336
Short-term Debt, Fair Value	290,964	312,458
Accrued Interest Payable Fair Value Disclosure	953	600
Derivative Liability	65,057	24,283
Fair Value
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	200,000	634,631
Debt Securities, Available-for-sale	1,505,520	1,408,165
Other Investment Securities	7,569	9,211
Loans Receivable, Fair Value Disclosure	3,491,318	3,456,539
Accrued Interest Receivable Fair Value Disclosure	18,287	15,627
Derivative Asset	81,838	29,029
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Deposits, Fair Value Disclosure	4,867,883	4,926,724
Short-term Debt, Fair Value	290,964	312,458
Accrued Interest Payable Fair Value Disclosure	953	600
Derivative Liability	65,057	24,283
Level 1
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	200,000	634,631
Debt Securities, Available-for-sale	0	0
Other Investment Securities	3,851	4,134
Loans Receivable, Fair Value Disclosure	0	0
Accrued Interest Receivable Fair Value Disclosure	18,287	15,627
Derivative Asset	0	0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Deposits, Fair Value Disclosure	3,981,766	3,856,421
Short-term Debt, Fair Value	0	0
Accrued Interest Payable Fair Value Disclosure	953	600
Derivative Liability	0	0
Level 2
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Debt Securities, Available-for-sale	1,503,061	1,404,704
Other Investment Securities	3,718	5,077
Loans Receivable, Fair Value Disclosure	0	0
Accrued Interest Receivable Fair Value Disclosure	0	0
Derivative Asset	81,838	29,029
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Deposits, Fair Value Disclosure	886,117	1,070,303
Short-term Debt, Fair Value	290,964	312,458
Accrued Interest Payable Fair Value Disclosure	0	0
Derivative Liability	65,057	24,283
Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Debt Securities, Available-for-sale	2,459	3,461
Other Investment Securities	0	0
Loans Receivable, Fair Value Disclosure	3,491,318	3,456,539
Accrued Interest Receivable Fair Value Disclosure	0	0
Derivative Asset	0	0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Deposits, Fair Value Disclosure	0	0
Short-term Debt, Fair Value	0	0
Accrued Interest Payable Fair Value Disclosure	0	0
Derivative Liability	$ 0	$ 0