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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Summary Of Significant Accounting Policies [Line Items]    
Allowance for doubtful accounts $ 0 $ 0
In-process research and development $ 7,500,000 $ 7,500,000
Remaining amortization period 10 years  
Goodwill impairment $ 0  
Zertane Patents [Member]    
Summary Of Significant Accounting Policies [Line Items]    
In-process research and development 7,500,000  
Costs of establishing patents $ 500,000  
Remaining amortization period 11 years  
Intangible asset, expiration month and year 2022-03  
ORP [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Costs of establishing patents $ 380,000  
Remaining amortization period 15 years  
Intangible asset, expiration month and year 2028-03