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Earnings Per Share Earnings Per Share (Tables)
 3 Months Ended
Sep. 30, 2017
Earnings Per Share, Basic and Diluted [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
The following table reflects the reconciliation between basic and diluted earnings per share.
 
Three Months Ended September 30,
 
2017
 
2016
Net Income
$
63,411

 
$
62,244

Common share information:
 
 
 
Weighted average shares outstanding for basic earnings per share
77,283

 
78,413

Dilutive effect of stock options and restricted stock
363

 
431

Weighted average shares outstanding for diluted earnings per share
77,646

 
78,844

Basic earnings per share
$
0.82

 
$
0.79

Diluted earnings per share
$
0.82

 
$
0.79