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Stock-based Compensation - Stock Option Activity (Details 2) - USD ($)
$ / shares in Units, $ in Thousands
6 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Number of Options    
Outstanding at the beginning of the period (in shares) 1,012,650  
Granted (in shares) 33,088  
Exercised (in shares) (104,944)  
Expired or forfeited (in shares) (3,087)  
Outstanding at the end of the period (in shares) 937,707  
Exercisable at the end of the period (in shares) 860,203  
Weighted-Average Exercise Price    
Outstanding at the beginning of the period (in dollars per share) $ 27.30  
Granted (in dollars per share) 74.48  
Exercised (in dollars per share) 27.52  
Expired or forfeited (in dollars per share) 63.48  
Outstanding at the end of the period (in dollars per share) 28.82  
Exercisable at the end of the period (in dollars per share) $ 25.35  
Weighted-Average Remaining Contractual Term    
Outstanding at the end of the period 4 years 6 months  
Exercisable at the end of the period 4 years 1 month 6 days  
Aggregate Intrinsic Value    
Outstanding at the end of the period $ 56,109  
Exercisable at the end of the period $ 54,462  
Shares    
Nonvested at the beginning of the period (in shares) 659,906  
Granted (in shares) 330,743  
Vested (in shares) (382,797)  
Forfeited (in shares) (47,070)  
Nonvested at the end of the period (in shares) 560,782  
Weighted-Average Fair Value    
Nonvested at the beginning of the period (in dollars per share) $ 63.75  
Granted (in dollars per share) 73.22  
Vested (in dollars per share) 65.45  
Forfeited (in dollars per share) 67.67  
Nonvested at the end of the period (in dollars per share) $ 67.85  
Performance-based restricted stock units    
Shares    
Granted (in shares) 139,300 151,469
Performance-based restricted stock units | Minimum    
Weighted-Average Fair Value    
Payout as a percentage of the original number of shares awarded or units awarded, which are converted into shares of the Company's common stock 0.00%  
Performance-based restricted stock units | Maximum    
Weighted-Average Fair Value    
Payout as a percentage of the original number of shares awarded or units awarded, which are converted into shares of the Company's common stock 250.00%  
2012 Plan    
Weighted-Average Fair Value    
Securities available for grant 2,786,427  
2012 Plan | Restricted stock and RSU    
Weighted-Average Fair Value    
Number of shares available for grant reduced for each award granted 1.87  
Number of shares available for grant increased for each award forfeited and returned 1.87