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Fair Value Measurements (Carrying Amount, Estimated Fair Value, And Placement In Fair Value Hierarchy Of Financial Instruments) (Details) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities available for sale		$ 772,639	$ 622,494
Securities held to maturity, fair value		324,873	298,695
Carrying Amount [Member] | Level 1 Inputs [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents		52,554	58,151
Accrued interest receivable		8,623	8,104
Non-maturity deposits		2,043,219	1,857,285
Short-term borrowings		350,600	334,804
Accrued interest payable		5,101	3,862
Carrying Amount [Member] | Level 2 Inputs [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities available for sale		772,639	622,494
Securities held to maturity, fair value		320,820	294,438
Loans held for sale		448	755
Loans		1,978,521	1,881,713
FHLB and FRB stock		21,558	19,014
Time deposits		613,019	593,242
Carrying Amount [Member] | Level 3 Inputs [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	[1]	3,252	2,652
Estimated Fair Value [Member] | Level 1 Inputs [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents		52,554	58,151
Accrued interest receivable		8,623	8,104
Non-maturity deposits		2,043,219	1,857,285
Short-term borrowings		350,600	334,804
Accrued interest payable		5,101	3,862
Estimated Fair Value [Member] | Level 2 Inputs [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities available for sale		772,639	622,494
Securities held to maturity, fair value		324,873	298,695
Loans held for sale		448	755
Loans		1,987,842	1,887,959
FHLB and FRB stock		21,558	19,014
Time deposits		614,066	593,793
Estimated Fair Value [Member] | Level 3 Inputs [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	[1]	$ 3,252	$ 2,652
[1] Comprised of collateral dependent impaired loans.

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Non-Maturity Deposits Fair Value Disclosure

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- Definition

Fair value portion of liabilities incurred for goods and services received that are used in an entity's business and related party payables.

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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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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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

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Fair value 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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