Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Feb. 28, 2013	Feb. 29, 2012	Feb. 28, 2011
Consolidated Statements of Income
Sales revenue, net	$ 1,288,263	$ 1,181,676	$ 777,043
Cost of goods sold	770,052	703,192	427,797
Gross profit	518,211	478,484	349,246
Selling, general and administrative expense	369,438	339,098	235,341
Operating income before impairments	148,773	139,386	113,905
Asset impairment charges			2,161
Operating income	148,773	139,386	111,744
Nonoperating income (expense), net	86	(377)	577
Interest expense	(13,345)	(12,917)	(9,693)
Income before income taxes	135,514	126,092	102,628
Income tax expense	19,848	15,718	9,323
Net income	$ 115,666	$ 110,374	$ 93,305
Earnings per share:
Basic (in dollars per share)	$ 3.64	$ 3.52	$ 3.04
Diluted (in dollars per share)	$ 3.62	$ 3.48	$ 2.98
Weighted average shares of common stock used in computing net earnings per share:
Basic (in shares)	31,754	31,340	30,669
Diluted (in shares)	31,936	31,705	31,355