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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Accounting Policies [Abstract]      
Investment securities maturity period for consideration as cash equivalents, in days 90 days    
Inventory $ 6.5 $ 6.7  
Change in estimates of projected future variables that has no impact on reported value of goodwill, percentage 10.00%    
Advertising costs $ 2.4 $ 2.4 $ 2.4