Condensed Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Condensed Consolidated Statements Of Income [Abstract]
Sales	$ 610,769	$ 570,083	$ 1,834,217	$ 1,693,944
Cost of sales	565,989	535,448	1,702,938	1,583,934
Gross profit	44,780	34,635	131,279	110,010
Selling, general and administrative expenses	22,453	22,874	67,733	67,822
Restructuring charges	523	145	773	625
Thailand flood related charges, net of insurance	(3,078)		11,798
Income from operations	24,882	11,616	50,975	41,563
Interest expense	(443)	(334)	(1,090)	(997)
Interest income	326	446	935	1,293
Other income (expense)	178	(202)	96	94
Income before income taxes	24,943	11,526	50,916	41,953
Income tax expense (benefit)	5,629	(8,341)	12,424	(7,128)
Net income	$ 19,314	$ 19,867	$ 38,492	$ 49,081
Earnings per share:
Basic	$ 0.35	$ 0.34	$ 0.68	$ 0.82
Diluted	$ 0.34	$ 0.34	$ 0.67	$ 0.81
Weighted-average number of shares outstanding:
Basic	55,814	58,615	56,750	59,889
Diluted	56,028	58,879	57,054	60,391