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Intangible Assets, Net and Goodwill - Additional Information (Detail) - USD ($)
9 Months Ended 12 Months Ended
Mar. 31, 2016
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2015
Goodwill And Intangible Assets Disclosure [Abstract]        
Amortization of intangible assets   $ 6,200,000 $ 8,900,000 $ 12,500,000
Goodwill   56,118,000 56,118,000  
Additions to goodwill   0 0  
Impairment of goodwill $ 0 $ 0 $ 0