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Earnings Per Share (Tables)
9 Months Ended
Sep. 30, 2012
Earnings Per Share [Abstract]  
Schedule of Weighted Average Number of Shares [Table Text Block]
Average shares used in computing the basic and diluted earnings per share are as follows:
 
Three Months Ended
 
September 30, 2012
 
September 30, 2011
Basic computation
37,201,051

 
36,262,246

Dilutive effect of
 

 
 

Restricted stock and performance share awards (1)

 
248,775

 
 
 
 
Diluted computation
37,201,051

 
36,511,021



 
Nine Months Ended
 
September 30, 2012
 
September 30, 2011
Basic computation
36,723,105

 
36,254,159

Dilutive effect of
 
 
 

Restricted stock and performance share awards (1)
70,848

 
245,500

 
 
 
 
Diluted computation
36,793,953

 
36,499,659


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(1)           Performance share awards are included in diluted weighted average number of shares outstanding based upon what would be issued if the end of the most recent reporting period was the end of the term of the award.