Consolidated Statement of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net sales	$ 222,420	$ 199,460	$ 648,140	$ 581,800
Cost of sales	(163,980)	(147,530)	(480,340)	(446,270)
Gross profit	58,440	51,930	167,800	135,530
Selling, general and administrative expenses	(27,620)	(25,650)	(90,300)	(107,570)
Impairment of goodwill and indefinite-lived intangible assets	0	(134,600)	0	(134,600)
Operating profit (loss)	30,820	(108,320)	77,500	(106,640)
Other expense, net:
Interest expense	(3,440)	(3,450)	(11,110)	(11,260)
Debt financing and related expenses	0	0	(10,520)	0
Other income (expense), net	(540)	(1,200)	(800)	(150)
Other expense, net	(3,980)	(4,650)	(22,430)	(11,410)
Income (loss) before income tax expense	26,840	(112,970)	55,070	(118,050)
Income tax benefit (expense)	(7,250)	12,100	(10,580)	14,600
Net income (loss)	$ 19,590	$ (100,870)	$ 44,490	$ (103,450)
Basic earnings per share
Net income (loss) per share	$ 0.46	$ (2.32)	$ 1.03	$ (2.37)
Weighted average common shares—basic	42,889,922	43,457,704	43,061,707	43,707,331
Diluted earnings per share
Net income (loss) per share	$ 0.45	$ (2.32)	$ 1.03	$ (2.37)
Weighted average common shares—diluted	43,094,099	43,457,704	43,345,777	43,707,331