Condensed Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Net sales	$ 805,407	$ 792,738
Cost of goods sold	680,841	678,861
Gross profit	124,566	113,877
Selling, general and administrative expenses	66,919	55,360
Rationalization charges	885	1,071
Income from operations	56,762	57,446
Interest and other debt expense before loss on early extinguishment of debt	20,418	16,455
Loss on early extinguishment of debt	2,677	0
Interest and other debt expense	23,095	16,455
Income before taxes	33,667	40,991
Provision for income taxes	10,435	14,419
Net income	$ 23,232	$ 26,572
Earnings per share
Basic net income per share (usd per share)	$ 0.42	$ 0.44
Diluted net income per share (usd per share)	0.42	0.44
Dividends per share (usd per share)	$ 0.18	$ 0.17
Weighted average number of shares
Basic (in shares)	55,115	60,451
Effect of dilutive securities (in shares)	493	374
Diluted (in shares)	55,608	60,825