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Earnings Per Share (Tables)
3 Months Ended
Sep. 30, 2011
Earnings Per Share [Abstract] 
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
 
Three Months Ended
 
September 30,
 
2011
 
2010
Net Income
$
36,475

 
$
31,771

Common share information:
 
 
 
Weighted average shares outstanding for basic earnings per share
86,403

 
85,469

Dilutive effect of stock options and restricted stock
731

 
678

Weighted average shares outstanding for diluted earnings per share
87,134

 
86,147

Basic earnings per share
$
0.42

 
$
0.37

Diluted earnings per share
$
0.42

 
$
0.37