Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Other Intangible Assets - Additional Information (Details)

v3.8.0.1
Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($)
$ in Thousands
Nov. 30, 2017
Aug. 31, 2017
Impaired Assets [Line Items]    
Goodwill $ 531,454 $ 530,081
Future Amortization Expense, Remainder of 2018 15,300  
Future Amortization Expense, 2019 19,900  
Future Amortization Expense, 2020 19,200  
Future Amortization Expense, 2021 18,300  
Future Amortization Expense, 2022 16,300  
Future Amortization Expense, 2023 13,300  
Future Amortization Expense, Thereafter $ 21,900