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Earnings Per Share (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Basic:        
Net income $ 473 $ 484 $ 793 $ 374
Weighted average shares outstanding - basic 31,091,900 30,756,717 30,986,478 30,694,216
Net income per share-basic $ 0.02 $ 0.02 $ 0.03 $ 0.01
Diluted:        
Net income $ 473 $ 484 $ 793 $ 374
Weighted average shares outstanding - basic 31,091,900 30,756,717 30,986,478 30,694,216
Dilutive securities 157,207 268,761 156,398 262,990
Weighted average shares outstanding-diluted 31,249,107 31,025,478 31,142,876 30,957,206
Net income per share-diluted $ 0.02 $ 0.02 $ 0.03 $ 0.01