Property, Plant and Equipment - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment disposed	$ 19,000	$ 138,000
Accumulated depreciation of disposed property, plant and equipment	18,000	86,000
Fixed asset impairment charges	4,083	3,660	$ 258
Depreciation expense	50,303	56,056	50,493
Interest expense capitalized	2,406	1,147	$ 3,748
WHQ Development [Member]
Property, Plant and Equipment [Line Items]
Offsetting liability	$ 94,727	$ 31,662