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Goodwill and Intangible Assets - Amortization (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Aug. 31, 2018
Aug. 31, 2017
Aug. 31, 2018
Aug. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]        
Aggregate Amortization Expense $ 3,402 $ 4,690 $ 7,522 $ 9,538
Estimated Amortization Expense        
Fiscal 2019 14,050   14,050  
Fiscal 2020 13,121   13,121  
Fiscal 2021 10,461   10,461  
Fiscal 2022 4,049   4,049  
Fiscal 2023 3,974   3,974  
Fiscal 2024 $ 3,665   $ 3,665