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Intangible Assets Including Goodwill - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Jun. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]      
Amortization expense $ 800 $ 800  
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross 33,760   $ 33,826
Intellectual Property [Member]      
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross 2,579   2,579
Customer Relationships [Member]      
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross 28,113   28,179
Noncompete Agreements [Member]      
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross 1,453   1,453
Trade Names [Member]      
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross $ 1,615   $ 1,615