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Net Income Per Share (Tables)
 3 Months Ended
Sep. 30, 2012
Earnings Per Share [Abstract]  
Schedule Of Net Income Per Share
 
 
Three Months Ended
September 30,
 
 
2012
 
2011
Basic earnings per share
 
 
 
 
Net income
 
$
19,429

 
$
34,986

Basic earnings per share
 
$
0.33

 
$
0.61

Diluted earnings per share
 
 
 
 
Net income
 
$
19,429

 
$
34,986

Diluted earnings per share
 
$
0.33

 
$
0.60

Weighted-average number of shares outstanding
 
 
 
 
Basic
 
58,424

 
57,412

Effect of dilutive securities
 
495

 
1,187

Diluted
 
58,919

 
58,599

Excluded as anti-dilutive*
 
1,024

 
—


* Represents options to purchase Common Shares excluded from the calculation of diluted net income per share because the exercise price of the stock options was greater than or equal to the average price of the Common Shares during the period.