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Stockholders' Equity - Stock-based Compensation (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Dec. 11, 2017
shares
Mar. 31, 2018
USD ($)
$ / shares
shares
Mar. 31, 2017
USD ($)
Mar. 31, 2018
USD ($)
ShareBasedCompensationPlan
$ / shares
shares
Mar. 31, 2017
USD ($)
shares
Stock-based Compensation          
Stock-based compensation expense before taxes | $   $ 6,014 $ 6,203 $ 17,754 $ 20,262
Less: related income tax benefit | $   (1,864) (2,378) (5,492) (7,828)
Stock-based compensation expense, net of estimated taxes | $   4,150 3,825 12,262 $ 12,434
RSU          
Stock-based Compensation          
Unrecognized compensation cost | $   $ 19,900   $ 19,900  
Weighted-average period       1 year 10 months 24 days  
Shares          
Nonvested at the beginning of the period (in shares)       611,687  
Granted (in shares)       349,538  
Vested (in shares)       (401,773)  
Forfeited (in shares)       (13,919)  
Nonvested at the end of the period (in shares)   545,533   545,533  
Weighted-Average Fair Value          
Nonvested at the beginning of the period (in dollars per share) | $ / shares       $ 65.85  
Granted (in dollars per share) | $ / shares       74.11  
Vested (in dollars per share) | $ / shares       65.27  
Forfeited (in dollars per share) | $ / shares       70.11  
Nonvested at the end of the period (in dollars per share) | $ / shares   $ 71.46   $ 71.46  
Stock Options          
Stock-based Compensation          
Unrecognized compensation cost | $   $ 700   $ 700  
Weighted-average period       2 years  
Number of Options          
Outstanding at the beginning of the period (in shares)       780,671  
Granted (in shares)       25,379  
Exercised (in shares)       (113,255)  
Expired or forfeited (in shares)       (5,730)  
Outstanding at the end of the period (in shares)   687,065   687,065  
Exercisable at the end of the period (in shares)   642,629   642,629  
Weighted-Average Exercise Price          
Outstanding at the beginning of the period (in dollars per share) | $ / shares       $ 30.00  
Granted (in dollars per share) | $ / shares       85.83  
Exercised (in dollars per share) | $ / shares       22.73  
Expired or forfeited (in dollars per share) | $ / shares       73.38  
Outstanding at the end of the period (in dollars per share) | $ / shares   $ 32.89   32.89  
Exercisable at the end of the period (in dollars per share) | $ / shares   $ 29.63   $ 29.63  
Weighted-Average Remaining Contractual Term          
Outstanding at the end of the period       3 years 2 months 12 days  
Exercisable at the end of the period       2 years 9 months 18 days  
Aggregate Intrinsic Value          
Outstanding at the end of the period | $   $ 23,193   $ 23,193  
Exercisable at the end of the period | $   $ 23,190   $ 23,190  
Performance-based restricted stock units          
Shares          
Granted (in shares)       117,346 155,488
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          
Stock-based Compensation          
Maximum number of shares of Common Stock which may be issued increased 1,600,000        
Weighted-Average Fair Value          
Shares available for grant   2,300,000   2,300,000  
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  
2005 AS&E Plan and the 2014 AS&E Plan          
Stock-based Compensation          
Number of share-based employee compensation plans assumed | ShareBasedCompensationPlan       2  
2005 AS&E Plan and the 2014 AS&E Plan | RSU          
Shares          
Granted (in shares)       0  
2006 Plan          
Number of Options          
Granted (in shares)       0  
Cost of goods sold          
Stock-based Compensation          
Stock-based compensation expense before taxes | $   $ 251 417 $ 739 $ 1,116
Selling, general and administrative          
Stock-based Compensation          
Stock-based compensation expense before taxes | $   5,614 5,627 16,574 15,909
Research and development          
Stock-based Compensation          
Stock-based compensation expense before taxes | $   $ 149 $ 159 $ 441 335
Restructuring          
Stock-based Compensation          
Stock-based compensation expense before taxes | $         $ 2,902