Customer Allowances and Discounts (Details) (USD $) In Thousands, unless otherwise specified	Feb. 29, 2012	Feb. 28, 2011	Feb. 28, 2010	Feb. 28, 2009
Allowances and discounts on trade accounts receivable
Allowances and discounts on trade accounts receivables	$ 104,068	$ 98,247
Customer Allowances and Discounts (Textual) [Abstract]
Trade allowances and discounts settled in cash	13,698	11,913
Allowance for Seasonal Sales Returns [Member]
Allowances and discounts on trade accounts receivable
Allowances and discounts on trade accounts receivables	34,285	34,058	36,443	47,121
Allowance for outdated products [Member]
Allowances and discounts on trade accounts receivable
Allowances and discounts on trade accounts receivables	10,976	8,264
Allowance for doubtful accounts [Member]
Allowances and discounts on trade accounts receivable
Allowances and discounts on trade accounts receivables	4,480	5,374	2,963	5,006
Allowance for marketing funds [Member]
Allowances and discounts on trade accounts receivable
Allowances and discounts on trade accounts receivables	26,679	25,631
Allowance for rebates [Member]
Allowances and discounts on trade accounts receivable
Allowances and discounts on trade accounts receivables	$ 27,648	$ 24,920