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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2012
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

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Year Ended December 31,

 

 

         2012

2011

2010

 

 

 

 

Weighted average common shares outstanding           

   11,932,926

   11,916,292

   11,896,148

Dilutive effect of employee stock options and restricted share awards

           36,441

           45,904

                    —

 

 

 

 

Weighted average diluted common shares outstanding

   11,969,367

   11,962,196

   11,896,148