Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Consolidated Statements Of Income [Abstract]
Sales	$ 2,540,873	$ 2,797,061	$ 2,506,467
Cost of sales	2,322,299	2,577,204	2,319,983
Gross profit	218,574	219,857	186,484
Selling, general and administrative expenses	111,744	115,700	99,331
Restructuring charges and integration and acquisition-related costs	13,861	7,131	9,348
Thailand flood-related items, net of insurance	0	(1,571)	(41,325)
Asset impairment charge and other	0	(1,547)	2,606
Income from operations	92,969	100,144	116,524
Interest expense	(2,996)	(1,890)	(1,934)
Interest income	1,207	2,048	1,688
Other expense	(1,141)	(1,673)	(315)
Income before income taxes	90,039	98,629	115,963
Income tax expense (benefit)	5,362	(17,388)	(5,018)
Net income	$ 95,401	$ 81,241	$ 110,945
Earnings per share:
Basic	$ 1.85	$ 1.52	$ 2.05
Diluted	$ 1.83	$ 1.5	$ 2.03
Weighted-average number of shares outstanding:
Basic	51,573	53,538	54,213
Diluted	52,088	54,222	54,779