Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues and other:
Sales	$ 704,825	$ 938,564	$ 826,455
Other income (expense), net	(2,147)	1,009	20,265
Total revenues, net of other expenses	702,678	939,573	846,720
Costs and expenses:
Selling, general and administrative	76,207	78,790	74,964
Research and development	3,761	6,214	6,347
Amortization of identifiable intangibles	1,897	2,520	1,704
Accrued pension and postretirement benefits	10,844	14,569	14,160
Interest expense	11,607	4,990	3,386
Asset impairments and costs associated with exit and disposal activities, net of adjustments	5,167	622	1,127
Pension settlement loss	92,291	0	0
Goodwill impairment	34,891	0	0
Total	862,708	906,729	779,610
Income (loss) before income taxes	(160,030)	32,844	67,110
Income tax expense (benefit)	(54,125)	4,389	9,284
Net income (loss)	$ (105,905)	$ 28,455	$ 57,826
Earnings (loss) per share:
Continuing operations (in usd per share)	$ (3.10)	$ 0.84	$ 1.72
Continuing operations (in usd per share)	$ (3.10)	$ 0.84	$ 1.72
Diluted:
Weighted Average Number of Shares Issued, Basic	34,133	33,806	33,563
Weighted Average Number of Shares Outstanding, Diluted, Adjustment	34,133	33,826	33,670
Product and Service, Other
Costs and expenses:
Cost of Goods and Services Sold	$ 599,110	$ 764,042	$ 649,690
Freight
Costs and expenses:
Cost of Goods and Services Sold	$ 26,933	$ 34,982	$ 28,232