Investment Securities (Details) (USD $)	Mar. 31, 2013	Dec. 31, 2012
The amortized cost and estimated fair values of investment securities
Available-for-sale securities, Amortized Cost	$ 171,959,000	$ 173,190,000
Available-for-sale securities, Gross Unrealized Gains	4,351,000	5,133,000
Available-for-sale securities, Gross Unrealized Losses	(457,000)	(115,000)
Available-for-sale securities, Fair Value	175,853,312	178,207,974
Obligations of U.S. Government corporations and agencies [Member]
The amortized cost and estimated fair values of investment securities
Available-for-sale securities, Amortized Cost	45,593,000	47,101,000
Available-for-sale securities, Gross Unrealized Gains	101,000	201,000
Available-for-sale securities, Gross Unrealized Losses	(14,000)	(7,000)
Available-for-sale securities, Fair Value	45,680,000	47,295,000
Obligations of states and political subdivisions [Member]
The amortized cost and estimated fair values of investment securities
Available-for-sale securities, Amortized Cost	50,608,000	48,393,000
Available-for-sale securities, Gross Unrealized Gains	3,183,000	3,692,000
Available-for-sale securities, Gross Unrealized Losses	(107,000)	(55,000)
Available-for-sale securities, Fair Value	53,684,000	52,030,000
Mortgage-backed securities [Member]
The amortized cost and estimated fair values of investment securities
Available-for-sale securities, Amortized Cost	75,573,000	77,513,000
Available-for-sale securities, Gross Unrealized Gains	1,037,000	1,218,000
Available-for-sale securities, Gross Unrealized Losses	(336,000)	(53,000)
Available-for-sale securities, Fair Value	76,274,000	78,678,000
Equity securities [Member]
The amortized cost and estimated fair values of investment securities
Available-for-sale securities, Amortized Cost	185,000	183,000
Available-for-sale securities, Gross Unrealized Gains	30,000	22,000
Available-for-sale securities, Fair Value	$ 215,000	$ 205,000

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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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 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 item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

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