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Intangible Assets - Expected Amortization Expense (Detail) - USD ($)
$ in Thousands
Dec. 31, 2018
Jun. 30, 2018
Finite Lived Intangible Assets Net [Abstract]    
2019 (six months) $ 17,165  
2020 32,440  
2021 28,767  
2022 25,000  
2023 22,336  
Thereafter 104,848  
Total intangible assets, net $ 230,556 [1] $ 241,755
[1] During the six months ended December 31, 2018, the Company removed $0.2 million in fully amortized intangible assets.