Consolidated Statement of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Net sales	$ 857,110	$ 769,970	$ 723,530
Cost of sales	(639,920)	(587,890)	(529,630)
Gross profit	217,190	182,080	193,900
Selling, general and administrative expenses	(121,970)	(134,480)	(102,530)
Net loss on dispositions of assets	(130)	(1,290)	(150)
Impairment of goodwill and indefinite-lived intangible assets	0	(134,600)	0
Operating profit (loss)	95,090	(88,290)	91,220
Other expense, net:
Interest expense	(14,510)	(14,660)	(13,950)
Debt financing and related expenses	(10,520)	0	0
Other income (expense), net	(950)	240	990
Other expense, net	(25,980)	(14,420)	(12,960)
Income (loss) before income taxes	69,110	(102,710)	78,260
Income tax benefit (expense)	(11,800)	22,950	(16,320)
Income (loss) from continuing operations	57,310	(79,760)	61,940
Income from discontinued operations, net of income taxes	0	0	36,680
Net income (loss)	$ 57,310	$ (79,760)	$ 98,620
Basic earnings (loss) per share:
Continuing operations	$ 1.33	$ (1.83)	$ 1.37
Discontinued operations	0	0	0.81
Net income (loss) per share	$ 1.33	$ (1.83)	$ 2.18
Weighted average common shares—basic	43,006,922	43,581,232	45,303,659
Diluted earnings (loss) per share:
Continuing operations	$ 1.32	$ (1.83)	$ 1.36
Discontinued operations	0	0	0.80
Net income (loss) per share	$ 1.32	$ (1.83)	$ 2.16
Weighted average common shares—diluted	43,281,076	43,581,232	45,595,154