Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenues and other items:
Sales	$ 178,167	$ 274,363	$ 369,289	$ 510,929
Other income (expense), net	(20)	1,342	260	1,041
Total revenues, net of other expenses	178,147	275,705	369,549	511,970
Costs and expenses:
Selling, general and administrative	16,889	18,862	35,894	40,143
Research and development	1,376	1,754	2,581	3,278
Amortization of identifiable intangibles	464	666	968	1,329
Accrued pension and post-retirement benefits	3,418	3,506	6,837	6,982
Interest expense	2,374	1,234	4,686	2,020
Asset impairments and costs associated with exit and disposal activities, net of adjustments	0	134	69	126
Goodwill, Impairment Loss	15,413	0	15,413	0
Total	200,400	255,280	392,483	474,344
Income (loss) before income taxes	(22,253)	20,425	(22,934)	37,626
Income tax expense (benefit)	(3,331)	5,556	(3,000)	6,334
Net income (loss)	$ (18,922)	$ 14,869	$ (19,934)	$ 31,292
Earnings (loss) per share:
Basic (in dollars per share)	$ (0.56)	$ 0.44	$ (0.59)	$ 0.93
Diluted (in dollars per share)	$ (0.56)	$ 0.44	$ (0.59)	$ 0.93
Shares used to compute earnings (loss) per share:
Basic (in shares)	34,079	33,814	33,988	33,734
Diluted (in shares)	34,079	33,854	33,988	33,776
Cost of goods sold
Costs and expenses:
Cost of Goods and Services Sold	$ 153,267	$ 218,088	$ 312,792	$ 401,348
Freight
Costs and expenses:
Cost of Goods and Services Sold	$ 7,199	$ 11,036	$ 13,243	$ 19,118