Fair Value Measurements (Schedule Of Estimates Of Fair Value Of Financial Instruments) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Assets:
Securities available-for-sale	$ 287,609	$ 254,043
Securities held-to-maturity	84,082	90,786
Other securities	9,926	9,857
Accrued interest receivable	7,838	6,826
Liabilities:
Deposits	2,902,683	2,872,787
Carrying Amount [Member]
Assets:
Cash and cash equivalents	153,424	148,228
Securities available-for-sale	287,609	254,043
Securities held-to-maturity	84,082	90,786
Other securities	9,926	9,857
Net loans	2,663,648	2,631,916
Accrued interest receivable	7,838	6,826
Derivative assets	6,602	10,253
Liabilities:
Deposits	2,902,683	2,872,787
Short-term debt	153,171	134,931
Long-term debt	16,495	16,495
Derivative liabilities	6,615	10,253
Fair Value [Member]
Assets:
Cash and cash equivalents	153,424	148,228
Securities available-for-sale	287,609	254,043
Securities held-to-maturity	86,561	94,191
Other securities	9,926	9,857
Net loans	2,669,438	2,638,911
Accrued interest receivable	7,838	6,826
Derivative assets	6,602	10,253
Liabilities:
Deposits	2,908,478	2,879,126
Short-term debt	153,177	134,934
Long-term debt	16,464	16,464
Derivative liabilities	6,615	10,253
Level 1 [Member]
Assets:
Cash and cash equivalents	153,424	148,228
Securities available-for-sale	4,972	4,735
Securities held-to-maturity	0	0
Other securities	0	0
Net loans	0	0
Accrued interest receivable	7,838	6,826
Derivative assets	0	0
Liabilities:
Deposits	1,905,296	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	280,490	247,437
Securities held-to-maturity	86,561	94,191
Other securities	9,926	9,857
Net loans	0	0
Accrued interest receivable	0	0
Derivative assets	6,602	10,253
Liabilities:
Deposits	1,003,182	1,033,002
Short-term debt	153,177	134,934
Long-term debt	16,464	16,464
Derivative liabilities	6,615	10,253
Level 3 [Member]
Assets:
Cash and cash equivalents	0	0
Securities available-for-sale	2,147	1,871
Securities held-to-maturity	0	0
Other securities	0	0
Net loans	2,669,438	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