Condensed Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Net sales	$ 1,093,163	$ 1,059,103	$ 2,120,294	$ 2,071,385
Cost of goods sold	909,650	885,853	1,770,784	1,738,101
Gross profit	183,513	173,250	349,510	333,284
Selling, general and administrative expenses	80,087	78,253	157,749	154,998
Rationalization charges	39,317	492	45,400	1,195
Other pension and postretirement income	(4,490)	(9,612)	(8,980)	(19,210)
Income before interest and income taxes	68,599	104,117	155,341	196,301
Interest and other debt expense before loss on early extinguishment of debt	28,401	29,922	55,505	60,401
Loss on early extinguishment of debt	0	2,493	0	2,493
Interest and other debt expense	28,401	32,415	55,505	62,894
Income before income taxes	40,198	71,702	99,836	133,407
Provision for income taxes	9,243	16,359	22,140	32,340
Net income	$ 30,955	$ 55,343	$ 77,696	$ 101,067
Earnings per share
Basic net income per share (usd per share)	$ 0.28	$ 0.50	$ 0.70	$ 0.91
Diluted net income per share (usd per share)	0.28	0.50	0.70	0.91
Dividends per share (usd per share)	$ 0.11	$ 0.10	$ 0.22	$ 0.20
Weighted average number of shares
Basic (in shares)	111,185	110,645	110,945	110,566
Effect of dilutive securities (in shares)	317	929	600	998
Diluted (in shares)	111,502	111,574	111,545	111,564