Fair Value Measurements (Schedule Of Estimates Of Fair Value Of Financial Instruments) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Assets:
Estimated Fair Value	$ 1,489,392	$ 1,408,165
Marketable equity securities	24,372	25,531
Net loans	3,611,741	3,525,648
Accrued interest receivable	17,256	15,627
Liabilities:
Deposits	4,957,805	4,925,336
Carrying Amount
Assets:
Cash and cash equivalents	298,353	634,631
Estimated Fair Value	1,489,392	1,408,165
Marketable equity securities	7,889	9,211
Net loans	3,611,741	3,525,648
Accrued interest receivable	17,256	15,627
Derivative assets	87,243	29,029
Liabilities:
Deposits	4,957,805	4,925,336
Short-term debt	304,807	312,458
Accrued interest payable	474	600
Derivative liabilities	69,361	24,283
Fair Value
Assets:
Cash and cash equivalents	298,353	634,631
Estimated Fair Value	1,489,392	1,408,165
Marketable equity securities	7,889	9,211
Net loans	3,521,447	3,456,539
Accrued interest receivable	17,256	15,627
Derivative assets	87,243	29,029
Liabilities:
Deposits	4,958,800	4,926,724
Short-term debt	304,807	312,458
Accrued interest payable	474	600
Derivative liabilities	69,361	24,283
Level 1
Assets:
Cash and cash equivalents	298,353	634,631
Estimated Fair Value	0	0
Marketable equity securities	3,986	4,134
Net loans	0	0
Accrued interest receivable	17,256	15,627
Derivative assets	0	0
Liabilities:
Deposits	4,018,036	3,856,421
Short-term debt	0	0
Accrued interest payable	474	600
Derivative liabilities	0	0
Level 2
Assets:
Cash and cash equivalents	0	0
Estimated Fair Value	1,486,823	1,404,704
Marketable equity securities	3,903	5,077
Net loans	0	0
Accrued interest receivable	0	0
Derivative assets	87,243	29,029
Liabilities:
Deposits	940,764	1,070,303
Short-term debt	304,807	312,458
Accrued interest payable	0	0
Derivative liabilities	69,361	24,283
Level 3
Assets:
Cash and cash equivalents	0	0
Estimated Fair Value	2,569	3,461
Marketable equity securities	0	0
Net loans	3,521,447	3,456,539
Accrued interest receivable	0	0
Derivative assets	0	0
Liabilities:
Deposits	0	0
Short-term debt	0	0
Accrued interest payable	0	0
Derivative liabilities	$ 0	$ 0