Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 2014
Property, Plant and Equipment [Line Items]
Depreciation	$ 31,200	$ 28,100	$ 25,100
Property, Plant and Equipment, Gross	416,701	359,724
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(190,368)	(163,141)
Property, plant, and equipment, net	226,333	196,583	$ 197,639
Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	21,265	16,004
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	141,370	122,539
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	215,796	184,921
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	22,237	21,716
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	3,206	2,351
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 12,827	$ 12,193