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Subsequent Events (Details) (USD $)	1 Months Ended	12 Months Ended			3 Months Ended
Subsequent Events (Details) (USD $)	Jan. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Mar. 31, 2013 Repurchase of Equity [Member]
Subsequent Event [Line Items]
Shares repurchased, total					14,984
Average price of common stock per share					$ 7.45
Total cost of the shares purchased					$ 112,000
Subsequent Events (Textual) [Abstract]
Dividends declared per common share	$ 0.06	$ 0.24	$ 0.21	$ 0.20

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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