Significant Accounting Policies (Tables)

12 Months Ended

Feb. 29, 2012

Significant Accounting Policies [Abstract]

Royalty revenue and related expenses

	2012		2011		2010
Royalty revenue	$	31,360	$	32,016	$	37,531
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
	$	26,632	$	27,549	$	29,430