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Goodwill and Intangible Assets - Summary of amortization expense attributable to intangible assets (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Aug. 31, 2020
Aug. 31, 2019
Aug. 31, 2020
Aug. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization of Intangible Assets $ 4,552 $ 4,463 $ 9,026 $ 8,339