Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 29, 2020	Feb. 28, 2019	Feb. 28, 2018
Property, Plant and Equipment [Line Items]
Depreciation	$ 33,100	$ 33,200	$ 33,400
Property, Plant and Equipment, Gross	487,201	467,618
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(274,097)	(257,391)
Property, plant, and equipment, net	213,104	210,227
Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	21,826	21,677
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	162,851	156,447
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	252,726	245,588
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	28,938	27,075
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	4,394	3,766
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 16,466	$ 13,065