Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 29, 2012	Feb. 28, 2011	Feb. 28, 2010
Royalty revenue and related royalty expense
Royalty revenue	$ 31,360	$ 32,016	$ 37,531
Royalty expenses:
Material, labor and other production costs	741,645	682,368	713,075
Selling, distribution and marketing expenses	533,827	483,553	512,954
Administrative and general expenses	250,691	260,476	276,031
AG Intellectual Properties [Member]
Royalty expenses:
Material, labor and other production costs	13,516	11,806	9,410
Selling, distribution and marketing expenses	11,368	14,046	17,970
Administrative and general expenses	1,748	1,697	2,050
Expenses associated with royalty revenue	$ 26,632	$ 27,549	$ 29,430