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Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)
 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Feb. 27, 2015
Goodwill And Intangible Assets [Line Items]        
Goodwill $ 177,200,000 $ 169,200,000 $ 56,900,000  
Impairment of goodwill 0      
Goodwill associated with the acquisition 8,100,000 112,300,000    
Impairment charges of intangible assets     1,500,000  
Impairment of long-lived assets 0 $ 0 0  
2016 12,500,000      
2017 12,500,000      
2018 12,500,000      
2019 12,500,000      
2020 12,200,000      
Thereafter 125,600,000      
German Clinic [Member]        
Goodwill And Intangible Assets [Line Items]        
Goodwill       $ 8,100,000
Diagnostics        
Goodwill And Intangible Assets [Line Items]        
Goodwill 112,300,000      
Other        
Goodwill And Intangible Assets [Line Items]        
Goodwill 64,900,000      
Other | German Clinic [Member]        
Goodwill And Intangible Assets [Line Items]        
Goodwill associated with the acquisition $ 8,000,000      
Purchased Licenses And Technologies        
Goodwill And Intangible Assets [Line Items]        
Weighted average remaining amortization period 15 years      
Customer Relationships        
Goodwill And Intangible Assets [Line Items]        
Estimated useful life 6 years      
Weighted average remaining amortization period 15 years      
Trademarks        
Goodwill And Intangible Assets [Line Items]        
Estimated useful life 13 years      
Weighted average remaining amortization period 15 years      
Developed Technology and Database        
Goodwill And Intangible Assets [Line Items]        
Estimated useful life 16 years      
Licensing Agreements        
Goodwill And Intangible Assets [Line Items]        
Impairment charges of intangible assets     $ 1,500,000