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Goodwill and Intangible Assets - Expected Future Amortization Expense (Detail) - USD ($)
$ in Thousands
Aug. 31, 2019
May 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]    
Remainder of 2020 $ 11,308  
2020 14,022  
2021 13,406  
2022 13,369  
2023 11,813  
2025 and thereafter 77,737  
Net carrying value, finite intangible items $ 141,655 $ 145,387