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Goodwill and Intangible Assets - Summary of amortization expense attributable to intangible assets (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Nov. 30, 2019
Nov. 30, 2018
Nov. 30, 2019
Nov. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]        
Aggregate Amortization Expense $ 4,790 $ 3,300 $ 13,129 $ 10,822