Fair Value Measurements (Schedule Of Estimates Of Fair Value Of Financial Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012
Assets:
Securities held-to-maturity	$ 4,293	$ 13,454
Liabilities:
Deposits	1,108,469	919,346
Long-term debt	16,495	16,495
Carrying Amount [Member]
Assets:
Cash and cash equivalents	192,334	84,994
Securities available-for-sale	328,782	377,122
Securities held-to-maturity	4,293	13,454
Other securities	13,344	11,463
Net loans	2,507,376	2,127,560
Accrued interest receivable	8,275	6,692
Derivative assets	5,758	14,012
Liabilities:
Deposits	2,835,950	2,409,316
Short-term debt	124,343	114,646
Long-term debt	16,495	16,495
Derivative liabilities	5,758	14,012
Fair Value [Member]
Assets:
Cash and cash equivalents	192,334	84,994
Securities available-for-sale	328,782	377,122
Securities held-to-maturity	5,951	13,861
Other securities	13,344	11,463
Net loans	2,536,584	2,162,856
Accrued interest receivable	8,275	6,692
Derivative assets	5,758	14,012
Liabilities:
Deposits	2,844,748	2,381,495
Short-term debt	124,349	114,648
Long-term debt	16,463	16,462
Derivative liabilities	5,758	14,012
Level 1 [Member]
Assets:
Cash and cash equivalents	192,334	84,994
Securities available-for-sale	6,385	5,959
Securities held-to-maturity	0	0
Other securities	0	0
Net loans	0	0
Accrued interest receivable	8,275	6,692
Derivative assets	0	0
Liabilities:
Deposits	1,727,481	1,447,954
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	319,948	368,778
Securities held-to-maturity	5,951	13,861
Other securities	13,344	11,463
Net loans	0	0
Accrued interest receivable	0	0
Derivative assets	5,758	14,012
Liabilities:
Deposits	1,117,267	933,541
Short-term debt	124,349	114,648
Long-term debt	16,463	16,462
Derivative liabilities	5,758	14,012
Level 3 [Member]
Assets:
Cash and cash equivalents	0	0
Securities available-for-sale	2,449	2,385
Securities held-to-maturity	0	0
Other securities	0	0
Net loans	2,536,584	2,162,856
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