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Fair value estimates, by Balance Sheet Grouping (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Financial assets [Abstract]
Investment securities available-for-sale	$ 155,016	$ 147,780
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets [Abstract]
Cash and cash equivalents	24,520	28,083
Investment securities available-for-sale	551	474
Significant Other Observable Inputs (Level 2) [Member]
Financial assets [Abstract]
Investment securities available-for-sale	154,465	147,306
Loans held for sale	3,616	1,917
Accrued interest receivable	3,395	3,272
Restricted equity securities	1,002	1,972
Financial liabilities [Abstract]
Deposits	624,294	578,628
Short-term borrowings	17,854	12,764
Long-term debt	2,599	13,354
Accrued interest payable	219	425
Significant Unobservable Inputs (Level 3) [Member]
Financial assets [Abstract]
Net loans	504,668	466,166
Carrying Value [Member]
Financial assets [Abstract]
Cash and cash equivalents	24,520	28,083
Investment securities available-for-sale	155,016	147,780
Loans held for sale	3,616	1,917
Net loans	498,274	459,192
Accrued interest receivable	3,395	3,272
Restricted equity securities	1,002	1,972
Assets, Fair Value Disclosure	685,823	642,216
Financial liabilities [Abstract]
Deposits	621,800	574,311
Short-term borrowings	17,854	12,764
Long-term debt	2,507	13,130
Accrued interest payable	219	425
Liabilities, total	642,380	600,630
Fair Value [Member]
Financial assets [Abstract]
Cash and cash equivalents	24,520	28,083
Investment securities available-for-sale	155,016	147,780
Loans held for sale	3,616	1,917
Net loans	504,668	466,166
Accrued interest receivable	3,395	3,272
Restricted equity securities	1,002	1,972
Assets, Fair Value Disclosure	692,217	649,190
Financial liabilities [Abstract]
Deposits	624,294	578,628
Short-term borrowings	17,854	12,764
Long-term debt	2,599	13,354
Accrued interest payable	219	425
Liabilities, total	$ 644,966	$ 605,171

X

- 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 accrued interest payable as of the balance sheet date.

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-SubTopic 10

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-Paragraph 2

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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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- 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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- 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. This item represents 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 orders of withdrawal (NOW) and time deposits among others.

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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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The aggregate value of all restricted investments.

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-Name Accounting Standards Codification

-Topic 946

-SubTopic 320

-Section S99

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-Subparagraph (SX 210.12-12C.9(c))

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