Consolidated Statements of Income (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Consolidated Statements of Income [Abstract]
Net sales	$ 706,423	$ 647,467	$ 1,019,312	$ 917,300
Cost of sales	494,984	456,933	716,463	650,474
Gross profit	211,439	190,534	302,849	266,826
Selling and administrative expenses	113,518	101,665	204,352	185,845
Operating income	97,921	88,869	98,497	80,981
Interest expense, net	1,824	1,928	3,469	4,282
Income before income taxes and equity earnings (losses)	96,097	86,941	95,028	76,699
Provision for income taxes	37,670	34,167	37,251	30,142
Equity earnings (losses) in unconsolidated investments	150	(4)	162	102
Net income	$ 58,577	$ 52,770	$ 57,939	$ 46,659
Earnings per share:
Basic shares (in dollars per share)	$ 1.21	$ 1.07	$ 1.19	$ 0.95
Diluted shares (in dollars per share)	$ 1.19	$ 1.05	$ 1.17	$ 0.93
Weighted average shares outstanding:
Basic shares (in shares)	48,231	49,513	48,546	49,355
Diluted shares (in shares)	49,116	50,445	49,352	50,169
Cash dividends declared per common share (in dollars per share)	$ 0.14	$ 0.13	$ 0.27	$ 0.26