CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
CONSOLIDATED STATEMENTS OF INCOME (Unaudited) [Abstract]
Net sales	$ 384,393	$ 325,838
Cost of sales	178,407	155,528
Gross profit	205,986	170,310
Selling and marketing expenses	83,299	64,370
General, administrative and other expenses	36,622	30,660
Operating income	86,065	75,280
Other expense, net:
Interest expense, net	(4,066)	(2,539)
Other expense, net	(441)	(603)
Total other expense	(4,507)	(3,142)
Income before income taxes	81,558	72,138
Income tax provision	25,340	23,878
Net income	$ 56,218	$ 48,260
Earnings per common share:
Basic (in dollars per share)	$ 0.88	$ 0.70
Diluted (in dollars per share)	$ 0.86	$ 0.68
Weighted average common shares outstanding:
Basic (in shares)	63,881	68,565
Diluted (in shares)	65,684	70,871