Consolidated Statement of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Net sales	$ 235,340	$ 218,530	$ 683,990	$ 680,520
Cost of sales	(179,410)	(170,200)	(525,840)	(517,800)
Gross profit	55,930	48,330	158,150	162,720
Selling, general and administrative expenses	(32,290)	(32,110)	(104,410)	(94,480)
Net gain on dispositions of assets	120	4,760	70	4,540
Operating profit	23,760	20,980	53,810	72,780
Other expense, net:
Interest expense	(3,950)	(3,600)	(11,620)	(10,510)
Other income (expense), net	(120)	860	(30)	850
Other expense, net	(4,070)	(2,740)	(11,650)	(9,660)
Income before income tax expense	19,690	18,240	42,160	63,120
Income tax expense	(3,200)	(4,940)	(9,740)	(15,790)
Net income	$ 16,490	$ 13,300	$ 32,420	$ 47,330
Basic earnings per share
Net income per share	$ 0.40	$ 0.32	$ 0.78	$ 1.12
Weighted average common shares—basic	41,425,208	41,995,027	41,477,095	42,363,919
Diluted earnings per share
Net income per share	$ 0.40	$ 0.32	$ 0.78	$ 1.11
Weighted average common shares—diluted	41,673,381	42,181,440	41,706,867	42,590,777