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Joint Venture - Changes in Total Stockholders' Equity (Details) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended 24 Months Ended 89 Months Ended
Mar. 31, 2018
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2018
Mar. 31, 2018
Schedule of Equity Method Investments [Line Items]              
Balance, June 30, 2017       $ 298,549      
Exercise of common stock options and release of RSUs       1,352      
Reissuance of treasury stock upon exercise of common stock options and release of RSUs       (91)      
Withholding tax on restricted stock units       (2,248)      
Issuance of shares under ESPP       1,439      
Repurchase of common shares under shares repurchase program       (12,016)     $ (62,800)
Stock-based compensation expense       8,477      
Net income (loss)   $ (488) $ 2,386 7,973 $ 6,473    
Net loss attributable to noncontrolling interest   (2,139) $ (1,170) (5,269) (3,237)    
Cumulative translation adjustment       9,246      
Contributions from noncontrolling interest       128,994 $ 33,000    
Balance, March 31, 2018 $ 436,195 436,195   436,195   $ 436,195 436,195
Accounting Standards Update 2016-16              
Schedule of Equity Method Investments [Line Items]              
Deferred tax asset related to ASU 2016-16 adoption       (5,480)      
Parent              
Schedule of Equity Method Investments [Line Items]              
Balance, June 30, 2017       270,770      
Exercise of common stock options and release of RSUs       1,352      
Reissuance of treasury stock upon exercise of common stock options and release of RSUs       (91)      
Withholding tax on restricted stock units       (2,248)      
Issuance of shares under ESPP       1,439      
Repurchase of common shares under shares repurchase program       (12,016)      
Stock-based compensation expense       8,477      
Net income (loss)       13,242      
Cumulative translation adjustment       4,848      
Contributions from noncontrolling interest       0      
Balance, March 31, 2018 280,293 280,293   280,293   280,293 280,293
Parent | Accounting Standards Update 2016-16              
Schedule of Equity Method Investments [Line Items]              
Deferred tax asset related to ASU 2016-16 adoption       (5,480)      
Noncontrolling Interest              
Schedule of Equity Method Investments [Line Items]              
Balance, June 30, 2017       27,779      
Exercise of common stock options and release of RSUs       0      
Reissuance of treasury stock upon exercise of common stock options and release of RSUs       0      
Withholding tax on restricted stock units       0      
Issuance of shares under ESPP       0      
Repurchase of common shares under shares repurchase program       0      
Stock-based compensation expense       0      
Net loss attributable to noncontrolling interest       (5,269)      
Cumulative translation adjustment       4,398      
Contributions from noncontrolling interest 42,000     128,994   162,000  
Balance, March 31, 2018 $ 155,902 $ 155,902   155,902   $ 155,902 $ 155,902
Noncontrolling Interest | Accounting Standards Update 2016-16              
Schedule of Equity Method Investments [Line Items]              
Deferred tax asset related to ASU 2016-16 adoption       $ 0