Fair Value (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Mortgage loans held for sale, Fair value	$ 7,456	$ 8,340
Mortgage IRLCs	242	166
Obligations Of U.S. Treasury And Other U.S. Government Sponsored Entities [Member]
Investment securities	308,655	273,313
Obligations Of U.S. Treasury And Other U.S. Government Sponsored Entities [Member] \| Level 2 [Member]
Investment securities	308,655	273,313
Obligations Of States And Political Subdivisions [Member]
Investment securities	5,109	11,044
Obligations Of States And Political Subdivisions [Member] \| Level 2 [Member]
Investment securities	5,109	8,446
Obligations Of States And Political Subdivisions [Member] \| Level 3 [Member]
Investment securities		2,598
U.S. Government Sponsored Entities' Asset-Backed Securities [Member]
Investment securities	801,924	1,011,412
U.S. Government Sponsored Entities' Asset-Backed Securities [Member] \| Level 2 [Member]
Investment securities	801,924	1,011,412
Equity Securities [Member]
Investment securities	1,709	1,753
Equity Securities [Member] \| Level 1 [Member]
Investment securities	968	1,008
Equity Securities [Member] \| Level 3 [Member]
Investment securities	741	745
Interest Rate Swap [Member]
Swap, Fair value	1,338	1,634
Interest Rate Swap [Member] \| Level 2 [Member]
Swap, Fair value	1,338	1,634
Fair Value Swap [Member]
Swap, Fair value	200	60
Fair Value Swap [Member] \| Level 3 [Member]
Swap, Fair value	200	60
Level 2 [Member]
Mortgage loans held for sale, Fair value	7,456	8,340
Mortgage IRLCs	$ 242	$ 166

Fair values as of the balance sheet date of all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

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Derivative instrument obligations meeting the definition of a liability which the Company is a party to as of the balance sheet date.

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents investment securities as of the balance sheet date which may include marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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