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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, 2020
Nov. 30, 2019
Nov. 30, 2020
Nov. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization of intangible assets $ 4,501 $ 4,790 $ 13,527 $ 13,129