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Earnings Per Share Earnings Per Share (Tables)
 9 Months Ended
Mar. 31, 2018
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 March 31,
 
Nine Months Ended March 31,
 
2018
 
2017
 
2018
 
2017
Net Income
$
72,395

 
$
60,044

 
$
291,380

 
$
181,102

Common share information:
 
 
 
 
 
 
 
Weighted average shares outstanding for basic earnings per share
77,247

 
77,597

 
77,249

 
77,941

Dilutive effect of stock options and restricted stock
299

 
335

 
337

 
378

Weighted average shares outstanding for diluted earnings per share
77,546

 
77,932

 
77,586

 
78,319

Basic earnings per share
$
0.94

 
$
0.77

 
$
3.77

 
$
2.32

Diluted earnings per share
$
0.93

 
$
0.77

 
$
3.76

 
$
2.31