XML 79 R64.htm IDEA: XBRL DOCUMENT v3.10.0.1
Commitments and Contingencies - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Loss Contingencies [Line Items]      
Rent expense $ 9.2 $ 8.6 $ 8.3
License agreement | WARF (Wisconsin Alumni Research Foundation)      
Loss Contingencies [Line Items]      
Royalty costs 0.5 0.5 $ 0.6
Royalty amount accrued 0.2 $ 0.2  
License agreement | WARF (Wisconsin Alumni Research Foundation) | Minimum      
Loss Contingencies [Line Items]      
Annual commitment amount $ 0.3    
Existing 3.75% Convertible Notes      
Loss Contingencies [Line Items]      
Interest rate (as a percent) 3.75%