Property, Plant and Equipment - Classification of Depreciation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2019
Property, Plant and Equipment [Line Items]
Depreciation	$ 32,204	$ 33,070	$ 33,211
Cost of sales
Property, Plant and Equipment [Line Items]
Depreciation	29,884	30,721	30,747
Selling, general and administrative
Property, Plant and Equipment [Line Items]
Depreciation	$ 2,320	$ 2,349	$ 2,464