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Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Schedule of basic and diluted earning per share
Net income, basic	$ 1,342	$ 4,273	$ 10,088	$ 5,093
Weighted Average Number of Shares Outstanding, basic	2,608,319	2,744,177	2,645,924	2,758,388
Net income per share, Basic	$ 0.51	$ 1.56	$ 3.81	$ 1.85
Net income, diluted	$ 1,342	$ 4,273	$ 10,088	$ 5,093
Weighted Average Number of Shares Outstanding, diluted	3,345,481	3,474,794	3,380,604	3,491,451
Net income per share, diluted	$ 0.40	$ 1.23	$ 2.98	$ 1.46
Stock Options [Member]
Schedule of basic and diluted earning per share
Effect of dilutive securities, options	737,162	730,617	734,680	733,063

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