Inventories - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 28, 2015	Feb. 28, 2014
Inventory Disclosure [Abstract]
Effect of LIFO liquidation on income	$ 3,000
Inventory held on location for retailers with scan-based trading arrangements, which is included in finished products	$ 67,000	$ 67,000