Fair Value Measurements (Schedule Of Estimates Of Fair Value Of Financial Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Assets:
Securities available-for-sale	$ 723,254	$ 550,389
Securities held-to-maturity	60,706	65,646
Carrying Amount
Assets:
Cash and cash equivalents	122,991	82,508
Securities available-for-sale	723,254	550,389
Securities held-to-maturity	60,827	64,449
Other securities	28,810	14,147
Net loans	3,571,642	3,108,574
Accrued interest receivable	12,424	9,223
Derivative assets	17,100	14,502
Liabilities:
Deposits	3,975,559	3,315,634
Short-term debt	261,911	252,219
Long-term debt	4,053	16,495
Derivative liabilities	16,906	14,390
Fair Value
Assets:
Cash and cash equivalents	122,991	82,508
Securities available-for-sale	723,254	550,389
Securities held-to-maturity	60,706	65,646
Other securities	28,810	14,147
Net loans	3,516,557	3,090,471
Accrued interest receivable	12,424	9,223
Derivative assets	17,100	14,502
Liabilities:
Deposits	3,985,534	3,309,910
Short-term debt	261,911	252,219
Long-term debt	4,115	16,444
Derivative liabilities	16,906	14,390
Level 1
Assets:
Cash and cash equivalents	122,991	82,508
Securities available-for-sale	1,458	7,188
Securities held-to-maturity	0	0
Other securities	5,907	0
Net loans	0	0
Accrued interest receivable	12,424	9,223
Derivative assets	0	0
Liabilities:
Deposits	2,622,905	2,232,159
Short-term debt	0	0
Long-term debt	0	0
Derivative liabilities	0	0
Level 2
Assets:
Cash and cash equivalents	0	0
Securities available-for-sale	721,535	542,940
Securities held-to-maturity	60,706	65,646
Other securities	22,903	14,147
Net loans	0	0
Accrued interest receivable	0	0
Derivative assets	17,100	14,502
Liabilities:
Deposits	1,362,629	1,077,751
Short-term debt	261,911	252,219
Long-term debt	4,115	16,444
Derivative liabilities	16,906	14,390
Level 3
Assets:
Cash and cash equivalents	0	0
Securities available-for-sale	261	261
Securities held-to-maturity	0	0
Other securities	0	0
Net loans	3,516,557	3,090,471
Accrued interest receivable	0	0
Derivative assets	0	0
Liabilities:
Deposits	0	0
Short-term debt	0	0
Long-term debt	0	0
Derivative liabilities	$ 0	$ 0