Fair Value Measurements (Schedule Of Estimates Of Fair Value Of Financial Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Available-for-sale	$ 1,408,165	$ 1,176,797
Other Investment Securities	25,531	29,364
Carrying Amount
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	634,631	528,659
Debt Securities, Available-for-sale	1,408,165	1,176,797
Other Investment Securities	9,211	11,839
Loans Receivable, Fair Value Disclosure	3,525,648	3,597,570
Accrued Interest Receivable Fair Value Disclosure	15,627	15,793
Derivative Asset	29,029	53,166
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Deposits, Fair Value Disclosure	4,925,336	4,652,216
Short-term Debt, Fair Value	312,458	295,956
Accrued Interest Payable Fair Value Disclosure	600	1,586
Derivative Liability	24,283	53,288
Fair Value
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	634,631	528,659
Debt Securities, Available-for-sale	1,408,165	1,176,797
Other Investment Securities	9,211	11,839
Loans Receivable, Fair Value Disclosure	3,456,539	3,578,013
Accrued Interest Receivable Fair Value Disclosure	15,627	15,793
Derivative Asset	29,029	53,166
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Deposits, Fair Value Disclosure	4,926,724	4,665,905
Short-term Debt, Fair Value	312,458	295,956
Accrued Interest Payable Fair Value Disclosure	600	1,586
Derivative Liability	24,283	53,288
Level 1
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	634,631	528,659
Debt Securities, Available-for-sale	0	0
Other Investment Securities	4,134	6,800
Loans Receivable, Fair Value Disclosure	0	0
Accrued Interest Receivable Fair Value Disclosure	15,627	15,793
Derivative Asset	0	0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Deposits, Fair Value Disclosure	3,856,421	3,392,194
Short-term Debt, Fair Value	0	0
Accrued Interest Payable Fair Value Disclosure	600	1,586
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	1,404,704	1,167,962
Other Investment Securities	5,077	5,039
Loans Receivable, Fair Value Disclosure	0	0
Accrued Interest Receivable Fair Value Disclosure	0	0
Derivative Asset	29,029	53,166
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Deposits, Fair Value Disclosure	1,070,303	1,273,711
Short-term Debt, Fair Value	312,458	295,956
Accrued Interest Payable Fair Value Disclosure	0	0
Derivative Liability	24,283	53,288
Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Debt Securities, Available-for-sale	3,461	8,835
Other Investment Securities	0	0
Loans Receivable, Fair Value Disclosure	3,456,539	3,578,013
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