Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Consolidated Statements Of Income [Abstract]
Sales	$ 639,344	$ 542,444
Cost of sales	588,221	505,610
Gross profit	51,123	36,834
Selling, general and administrative expenses	28,153	22,399
Restructuring charges and integration and acquisition-related costs	2,109	442
Thailand flood related items, net of insurance	(1,571)	0
Income from operations	22,432	13,993
Interest expense	(476)	(459)
Interest income	515	414
Other income	26	316
Income before income taxes	22,497	14,264
Income tax expense (benefit)	3,372	2,777
Net income	$ 19,125	$ 11,487
Earnings per share:
Basic	$ 0.36	$ 0.21
Diluted	$ 0.35	$ 0.21
Weighted-average number of shares outstanding:
Basic	53,650	54,796
Diluted	54,277	55,150