Fair Value Measurements (Schedule Of Estimates Of Fair Value Of Financial Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Assets:
Securities available-for-sale	$ 273,856us-gaap_AvailableForSaleSecurities	$ 254,043us-gaap_AvailableForSaleSecurities
Securities held-to-maturity	87,455us-gaap_HeldToMaturitySecurities	90,786us-gaap_HeldToMaturitySecurities
Other securities	9,857	9,857
Accrued interest receivable	7,752us-gaap_InterestReceivable	6,826us-gaap_InterestReceivable
Liabilities:
Deposits	2,942,382us-gaap_Deposits	2,872,787us-gaap_Deposits
Carrying Amount [Member]
Assets:
Cash and cash equivalents	245,110	148,228
Securities available-for-sale	273,856	254,043
Securities held-to-maturity	87,455	90,786
Other securities	9,857	9,857
Net loans	2,612,292	2,631,916
Accrued interest receivable	7,752	6,826
Derivative assets	11,932	10,253
Liabilities:
Deposits	2,942,382	2,872,787
Short-term debt	132,588	134,931
Long-term debt	16,495	16,495
Derivative liabilities	11,932	10,253
Fair Value [Member]
Assets:
Cash and cash equivalents	245,110	148,228
Securities available-for-sale	273,856	254,043
Securities held-to-maturity	91,117	94,191
Other securities	9,857	9,857
Net loans	2,629,169	2,638,911
Accrued interest receivable	7,752	6,826
Derivative assets	11,932	10,253
Liabilities:
Deposits	2,950,743	2,879,126
Short-term debt	132,306	134,934
Long-term debt	16,464	16,464
Derivative liabilities	11,932	10,253
Level 1 [Member]
Assets:
Cash and cash equivalents	245,110	148,228
Securities available-for-sale	5,054	4,735
Securities held-to-maturity	0	0
Other securities	0	0
Net loans	0	0
Accrued interest receivable	7,752	6,826
Derivative assets	0	0
Liabilities:
Deposits	1,928,752	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	266,822	247,437
Securities held-to-maturity	91,117	94,191
Other securities	9,857	9,857
Net loans	0	0
Accrued interest receivable	0	0
Derivative assets	11,932	10,253
Liabilities:
Deposits	1,021,991	1,033,002
Short-term debt	132,306	134,934
Long-term debt	16,464	16,464
Derivative liabilities	11,932	10,253
Level 3 [Member]
Assets:
Cash and cash equivalents	0	0
Securities available-for-sale	1,980	1,871
Securities held-to-maturity	0	0
Other securities	0	0
Net loans	2,629,169	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

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

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Amount of Federal Home Loan Bank (FHLB) and Federal Reserve Bank stock.

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Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes loans held for sale. Excludes loans and leases covered under loss sharing agreements.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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