Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Consolidated Statements of Operations [Abstract]
Net sales	$ 604,426	$ 518,233	$ 1,693,903	$ 1,471,842
Cost of sales	412,927	352,096	1,168,878	1,013,310
Gross profit	191,499	166,137	525,025	458,532
Selling, general and administrative	110,389	97,470	313,656	289,880
Earnings from operations	81,110	68,667	211,369	168,652
Interest expense, net	(8,476)	(9,042)	(24,200)	(26,315)
Other (expense) income, net	1,387	(975)	(315)	90
Earnings from continuing operations before income taxes	74,021	58,650	186,854	142,427
Income tax provision	19,688	16,056	53,538	41,324
Net earnings from continuing operations	54,333	42,594	133,316	101,103
Earnings from discontinued operations, net		1,510		4,554
Net earnings	$ 54,333	$ 44,104	$ 133,316	$ 105,657
Basic earnings per share:
Continuing operations	$ 1.05	$ 0.83	$ 2.58	$ 1.95
Discontinued operations		$ 0.02		$ 0.09
Net earnings	$ 1.05	$ 0.85	$ 2.58	$ 2.04
Diluted earnings per share:
Continuing operations	$ 1.03	$ 0.81	$ 2.51	$ 1.91
Discontinued operations		$ 0.03		$ 0.09
Net earnings	$ 1.03	$ 0.84	$ 2.51	$ 2.00
Average shares outstanding:
Basic	51,900	51,602	51,772	51,863
Diluted	52,990	52,641	53,108	52,912