Fair Value Measurements (Schedule Of Estimates Of Fair Value Of Financial Instruments) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Assets:
Estimated Fair Value	$ 1,497,227	$ 1,408,165
Marketable equity securities	24,383	25,531
Net loans	3,549,743	3,525,648
Accrued interest receivable	16,342	15,627
Liabilities:
Deposits	5,141,928	4,925,336
Carrying Amount
Assets:
Cash and cash equivalents	696,979	634,631
Estimated Fair Value	1,497,227	1,408,165
Marketable equity securities	7,888	9,211
Net loans	3,549,743	3,525,648
Accrued interest receivable	16,342	15,627
Derivative assets	56,688	29,029
Liabilities:
Deposits	5,141,928	4,925,336
Short-term debt	402,368	312,458
Accrued interest payable	478	600
Derivative liabilities	43,186	24,283
Fair Value
Assets:
Cash and cash equivalents	696,979	634,631
Estimated Fair Value	1,497,227	1,408,165
Marketable equity securities	7,888	9,211
Net loans	3,469,399	3,456,539
Accrued interest receivable	16,342	15,627
Derivative assets	56,688	29,029
Liabilities:
Deposits	4,582,619	4,926,724
Short-term debt	402,368	312,458
Accrued interest payable	478	600
Derivative liabilities	43,186	24,283
Level 1
Assets:
Cash and cash equivalents	696,979	634,631
Estimated Fair Value	0	0
Marketable equity securities	3,975	4,134
Net loans	0	0
Accrued interest receivable	16,342	15,627
Derivative assets	0	0
Liabilities:
Deposits	3,610,268	3,856,421
Short-term debt	0	0
Accrued interest payable	478	600
Derivative liabilities	0	0
Level 2
Assets:
Cash and cash equivalents	0	0
Estimated Fair Value	1,494,371	1,404,704
Marketable equity securities	3,913	5,077
Net loans	0	0
Accrued interest receivable	0	0
Derivative assets	56,688	29,029
Liabilities:
Deposits	972,351	1,070,303
Short-term debt	402,368	312,458
Accrued interest payable	0	0
Derivative liabilities	43,186	24,283
Level 3
Assets:
Cash and cash equivalents	0	0
Estimated Fair Value	2,856	3,461
Marketable equity securities	0	0
Net loans	3,469,399	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