Fair Value Measurements (Carrying Values And Estimated Fair Values Of Financial Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities available for sale	$ 283,054	$ 281,539	$ 292,002
Loans held for sale, net	148	226
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	11,821	14,802
Interest bearing deposits with other banks
Securities available for sale	283,054	281,539
Other investments	12,977	14,658
Loans held for sale, net	148	226
Loans, net	945,741	937,168
Accrued interest receivable	5,543	5,621
Total assets	1,259,284	1,254,014
Deposits	1,066,317	1,027,125
Short-term borrowings	5,960	3,958
Long-term borrowings	163,588	203,268
Subordinated debentures	16,800	16,800
Subordinated debentures owed to unconsolidated subsidiary trusts	19,589	19,589
Accrued interest payable	1,641	1,877
Total liabilities	1,273,895	1,272,617
Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	11,821	14,802
Interest bearing deposits with other banks
Securities available for sale	283,054	281,539
Other investments	12,977	14,658
Loans held for sale, net	148	226
Loans, net	971,638	965,454
Accrued interest receivable	5,543	5,621
Total assets	1,285,181	1,282,300
Deposits	1,100,213	1,064,957
Short-term borrowings	5,960	3,958
Long-term borrowings	178,776	220,175
Subordinated debentures	16,800	16,800
Subordinated debentures owed to unconsolidated subsidiary trusts	19,589	19,589
Accrued interest payable	1,641	1,877
Total liabilities	$ 1,322,979	$ 1,327,356

Accrued Interest Payable Fair Value Disclosure

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Accrued Interest Receivable Fair Value Disclosure

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- Definition

Interest Bearing Deposits With Other Banks Fair Value Disclosure

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- Definition

Subordinated Debentures Owed To Unconsolidated Subsidiary Trusts Fair Value Disclosure

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- Definition

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

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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 Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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-Name Accounting Standards Codification

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-SubTopic 10

-Section 25

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Available-for-Sale Securities

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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 includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Company may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months.

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-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 8

-Footnote 2

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash

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-Name Accounting Standards Codification

-Glossary Cash Equivalents

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-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Amount of subordinated debt obligations (also known as subordinated loan, subordinated bond, subordinated debenture or junior debt) which has a priority ranking after other debts in a dissolution, measured at fair value.

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-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

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-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

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This element represents the aggregate of the liabilities reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

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-Topic 310

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- Definition

The fair value amount of long-term debt 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.

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