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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2011
Summary of Significant Accounting Policies [Abstract]  
Weighted average shares and share equivalents to calculate basic and diluted earnings per share
                         
    Year Ended
December 31, 2011
    Year Ended
December 31, 2010
    Year Ended
December 31, 2009
 

Weighted average number of shares outstanding used to calculate basic EPS

    5,469,159       5,893,105       5,806,773  
       

Dilutive securities:

                       

Stock options and restricted share units

    154,658       271,512       341,996  
   

 

 

   

 

 

   

 

 

 
       

Weighted average number of shares and share equivalents outstanding used to calculate diluted EPS

    5,623,817       6,164,617       6,148,769