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Fair Value Disclosures and Reporting, the Fair Value Option and Fair Value Measurements (Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Financial Assets:
Investment securities available for sale	$ 467,688	$ 425,044
Fair Value, Inputs, Level 1 [Member]
Financial Assets:
Cash and cash equivalents	39,678	78,006
Investment securities available for sale	2,562	2,456
Loans and leases, net
Collateral dependent impaired loans
Loans held-for-sale		105
Cash surrender value of life insurance policies
Other investments
Investment in limited partnership
Accrued interest receivable
Financial liabilities:
Noninterest-bearing	361,388	365,997
Interest-bearing
Fed funds purchased and repurchase agreements
Short-term borrowings
Long-term borrowings
Subordinated debentures
Limited partnership capital commitment
Accrued interest payable
Fair Value, Inputs, Level 2 [Member]
Financial Assets:
Cash and cash equivalents
Investment securities available for sale	465,126	422,588
Loans and leases, net	869,307	797,383
Collateral dependent impaired loans	15,860	14,705
Loans held-for-sale
Cash surrender value of life insurance policies	40,425	39,424
Other investments	6,122	5,932
Investment in limited partnership	7,579	9,204
Accrued interest receivable	5,248	4,990
Financial liabilities:
Noninterest-bearing
Interest-bearing	861,857	808,182
Fed funds purchased and repurchase agreements	7,170	5,974
Short-term borrowings	22,390
Long-term borrowings
Subordinated debentures	11,347	11,175
Limited partnership capital commitment	914	962
Accrued interest payable	122	186
Fair Value, Inputs, Level 3 [Member]
Financial Assets:
Cash and cash equivalents
Investment securities available for sale
Loans and leases, net
Collateral dependent impaired loans
Loans held-for-sale
Cash surrender value of life insurance policies
Other investments
Investment in limited partnership
Accrued interest receivable
Financial liabilities:
Noninterest-bearing
Interest-bearing
Fed funds purchased and repurchase agreements
Short-term borrowings
Long-term borrowings
Subordinated debentures
Limited partnership capital commitment
Accrued interest payable
Carrying Amount [Member]
Financial Assets:
Cash and cash equivalents	39,678	78,006
Investment securities available for sale	467,688	425,044
Loans and leases, net	858,309	778,382
Collateral dependent impaired loans	15,860	14,705
Loans held-for-sale		105
Cash surrender value of life insurance policies	40,425	39,424
Other investments	6,122	5,932
Investment in limited partnership	7,579	9,204
Accrued interest receivable	5,248	4,990
Financial liabilities:
Noninterest-bearing	361,388	365,997
Interest-bearing	861,658	808,182
Fed funds purchased and repurchase agreements	7,170	5,974
Short-term borrowings	22,390
Long-term borrowings
Subordinated debentures	30,928	30,928
Limited partnership capital commitment	914	962
Accrued interest payable	122	186
Carrying Amount [Member] | Commitments to extend credit [Member]
Off-balance-sheet financial instruments:
Notional Amount	395,368	420,707
Carrying Amount [Member] | Standby letters of credit [Member]
Off-balance-sheet financial instruments:
Notional Amount	6,871	8,703
Carrying Amount [Member] | Commercial lines of credit [Member]
Off-balance-sheet financial instruments:
Notional Amount	7,592	8,070
Fair Value [Member]
Financial Assets:
Cash and cash equivalents	39,678	78,006
Investment securities available for sale	467,688	425,044
Loans and leases, net	869,307	797,383
Collateral dependent impaired loans	15,860	14,705
Loans held-for-sale		105
Cash surrender value of life insurance policies	40,245	39,424
Other investments	6,122	5,932
Investment in limited partnership	7,579	9,204
Accrued interest receivable	5,248	4,990
Financial liabilities:
Noninterest-bearing	361,388	365,997
Interest-bearing	861,857	808,182
Fed funds purchased and repurchase agreements	7,170	5,974
Short-term borrowings	22,390
Long-term borrowings
Subordinated debentures	11,347	11,175
Limited partnership capital commitment	914	962
Accrued interest payable	$ 122	$ 186

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Interest Bearing Deposit Liabilities, Fair Value Disclosure

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Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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-Publisher SEC

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-Number 210

-Article 12

-Section 13

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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 the amount that could be realized under a life insurance contract or contracts owned by the entity, commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI).

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Fair value portion of arrangements with third parties, including, but not limited to, operating lease arrangement and arrangement in which the entity has agreed to expend funds to procure goods or services, or has agreed to commit resources to supply goods or services.

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-SubTopic 10

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-Subparagraph (SX 210.5-02.25)

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Fair value portion of short term borrowing where a bank borrows, at the federal funds rate, from another bank and securities that an entity sells and agrees to repurchase at a specified date for a specified price.

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Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

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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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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 the amount of short-term debt existing as of the balance sheet date.

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