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Earnings Per Share (Tables)
6 Months Ended
Jun. 30, 2012
Earnings Per Share [Abstract]  
Calculation of basic and diluted earnings per share
                                 
    Three months ended
June 30,
    Six months ended
June 30,
 
    2012     2011     2012     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