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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]
Earnings per share is calculated as follows:
For the Years Ended December 31,
 
2012
 
2011
 
2010
 
 
 
As Restated
 
As Restated
Numerator: (for both basic and diluted earnings per share)
 
 
 
 
 
Net income
$
15,165

 
$
13,509

 
$
15,194

Denominator:
 
 
 
 
 
Total average basic common shares outstanding
19,655,492

 
20,352,027

 
15,929,181

Effect of dilutive stock options and restricted stock awards
944,870

 
913,774

 
1,290,848

Total average diluted common shares outstanding
20,600,362

 
21,265,801

 
17,220,029

 
 
 
 
 
 
Earnings per share-basic
$
0.77

 
$
0.66

 
0.95

Earnings per share-diluted
$
0.74

 
$
0.64

 
0.88

 
 
 
 
 
 
Weighted average anti-dilutive common shares (1)
480,795

 
301,010


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(1) The weighted average anti-dilutive common shares presented in the 2011 Form 10-K for the year ended December 31, 2011 only included out-of-the money anti-dilutive stock options and has been revised to include all anti-dilutive stock options and restricted share awards calculated under the treasury method. The revision to the presentation of weighted average anti-dilutive common shares had no impact on the average basic and diluted common shares outstanding or the basic and diluted earnings per share calculations for the year ended December 31, 2011.