Fair Value Measurements (Schedule Of Estimates Of Fair Value Of Financial Instruments) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Assets:
Securities available-for-sale	$ 300,865	$ 254,043
Securities held-to-maturity	81,095	90,786
Other securities	9,926	9,857
Accrued interest receivable	7,690	6,826
Liabilities:
Deposits	2,865,502	2,872,787
Carrying Amount [Member]
Assets:
Cash and cash equivalents	118,708	148,228
Securities available-for-sale	300,865	254,043
Securities held-to-maturity	81,095	90,786
Other securities	9,926	9,857
Net loans	2,675,497	2,631,916
Accrued interest receivable	7,690	6,826
Derivative assets	14,099	10,253
Liabilities:
Deposits	2,865,502	2,872,787
Short-term debt	147,036	134,931
Long-term debt	16,495	16,495
Derivative liabilities	14,369	10,277
Fair Value [Member]
Assets:
Cash and cash equivalents	118,708	148,228
Securities available-for-sale	300,865	254,043
Securities held-to-maturity	84,005	94,191
Other securities	9,926	9,857
Net loans	2,685,390	2,638,911
Accrued interest receivable	7,690	6,826
Derivative assets	14,099	10,253
Liabilities:
Deposits	2,873,255	2,879,126
Short-term debt	147,035	134,934
Long-term debt	16,464	16,464
Derivative liabilities	14,369	10,277
Level 1 [Member]
Assets:
Cash and cash equivalents	118,708	148,228
Securities available-for-sale	4,632	4,735
Securities held-to-maturity	0	0
Other securities	0	0
Net loans	0	0
Accrued interest receivable	7,690	6,826
Derivative assets	0	0
Liabilities:
Deposits	1,883,153	1,846,124
Short-term debt	0	0
Long-term debt	0	0
Derivative liabilities	0	0
Level 2 [Member]
Assets:
Cash and cash equivalents	0	0
Securities available-for-sale	294,142	247,437
Securities held-to-maturity	84,005	94,191
Other securities	9,926	9,857
Net loans	0	0
Accrued interest receivable	0	0
Derivative assets	14,099	10,253
Liabilities:
Deposits	990,102	1,033,002
Short-term debt	147,035	134,934
Long-term debt	16,464	16,464
Derivative liabilities	14,369	10,277
Level 3 [Member]
Assets:
Cash and cash equivalents	0	0
Securities available-for-sale	2,091	1,871
Securities held-to-maturity	0	0
Other securities	0	0
Net loans	2,685,390	2,638,911
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