Post Acquisition Financial Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	May. 31, 2015	May. 31, 2014
Business Acquisition [Line Items]
Revenue	$ 481,001	$ 423,754
Operating expenses	(338,674)	(308,348)
Income from operations	70,930	50,963
Tax benefit	(19,641)	(15,417)
Net income	48,086	$ 37,745
Feed Henry Enovance and Inktank Storage Inc
Business Acquisition [Line Items]
Revenue	3,635
Operating expenses	(15,563)
Income from operations	(11,928)
Tax benefit	3,459
Net income	$ (8,469)