Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Consolidated Statements Of Income [Abstract]
Sales	$ 2,797,061	$ 2,506,467	$ 2,468,150
Cost of sales	2,577,204	2,319,983	2,291,412
Gross profit	219,857	186,484	176,738
Selling, general and administrative expenses	115,700	99,331	89,951
Restructuring charges and integration and acquisition-related costs	7,131	9,348	2,200
Thailand flood-related items, net of insurance	(1,571)	(41,325)	9,028
Asset impairment charge and other	(1,547)	2,606	0
Income from operations	100,144	116,524	75,559
Interest expense	(1,890)	(1,934)	(1,580)
Interest income	2,048	1,688	1,306
Other income (expense)	(452)	(101)	154
Income before income taxes	99,850	116,177	75,439
Income tax expense	17,408	5,018	18,832
Net income	$ 82,442	$ 111,159	$ 56,607
Earnings per share:
Basic	$ 1.54	$ 2.05	$ 1.01
Diluted	$ 1.52	$ 2.03	$ 1.00
Weighted-average number of shares outstanding:
Basic	53,538	54,213	56,320
Diluted	54,222	54,779	56,634