Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Net sales	$ 371,780	$ 279,651	$ 1,117,423	$ 750,236
Type of Revenue [Extensible List]	Net sales	Net sales	Net sales	Net sales
Costs of products sold	$ 334,396	$ 241,294	$ 1,010,977	$ 637,029
Type of Cost, Good or Service [Extensible List]	Net sales	Net sales	Net sales	Net sales
Gross profit	$ 37,384	$ 38,357	$ 106,446	$ 113,207
Selling, general and administrative expenses	28,890	26,066	90,456	77,877
Goodwill and other asset impairment charges	42,541	0	159,890	0
Loss (gains) on dispositions of plant, equipment and timberlands, net	20	(2,235)	(2,868)	(4,638)
Operating income (loss)	(34,067)	14,526	(141,032)	39,968
Non-operating income (expense)
Interest expense	(8,139)	(2,061)	(23,673)	(5,364)
Interest income	92	21	147	52
Other, net	(2,220)	(876)	(4,015)	(1,949)
Total non-operating expense	(10,267)	(2,916)	(27,541)	(7,261)
Income (loss) from continuing operations before income taxes	(44,334)	11,610	(168,573)	32,707
Income tax provision (benefit)	4,920	3,551	(8,569)	14,762
Income (loss) from continuing operations	(49,254)	8,059	(160,004)	17,945
Discontinued operations:
Income (loss) before income taxes	(242)	(532)	129	(614)
Income tax provision	0	0	0	0
Income (loss) from discontinued operations	(242)	(532)	129	(614)
Net income (loss)	$ (49,496)	$ 7,527	$ (159,875)	$ 17,331
Basic earnings per share
Income (loss) from continuing operations (in dollars per share)	$ (1.10)	$ 0.18	$ (3.57)	$ 0.40
Loss from discontinued operations (in dollars per share)	(0.01)	(0.01)	0	(0.01)
Basic earnings (loss) per share (in dollars per share)	(1.11)	0.17	(3.57)	0.39
Diluted earnings per share
Income (loss) from continuing operations (in dollars per share)	(1.10)	0.18	(3.57)	0.40
Loss from discontinued operations (in dollars per share)	(0.01)	(0.01)	0	(0.01)
Diluted earnings (loss) per share (in dollars per share)	$ (1.11)	$ 0.17	$ (3.57)	$ 0.39
Weighted average shares outstanding
Basic (in shares)	44,877	44,593	44,809	44,536
Diluted (in shares)	44,877	44,939	44,809	44,889