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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
Basic:        
Net income $ 358 $ 591 $ 1,151 $ 965
Weighted average shares outstanding - basic 31,130,908 30,794,268 31,034,972 30,727,720
Net income per share-basic $ 0.01 $ 0.02 $ 0.04 $ 0.03
Diluted:        
Net income $ 358 $ 591 $ 1,151 $ 965
Weighted average shares outstanding - basic 31,130,908 30,794,268 31,034,972 30,727,720
Dilutive securities 185,928 218,744 167,870 250,213
Weighted average shares outstanding-diluted 31,316,836 31,013,012 31,202,842 30,977,933
Net income per share-diluted $ 0.01 $ 0.02 $ 0.04 $ 0.03