Consolidated Statement of Income Statement - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net sales	$ 236,830	$ 223,780	$ 697,490	$ 665,790
Cost of sales	(175,590)	(162,060)	(511,080)	(478,910)
Gross profit	61,240	61,720	186,410	186,880
Selling, general and administrative expenses	(32,550)	(31,840)	(100,760)	(90,270)
Operating profit	28,690	29,880	85,650	96,610
Other expense, net:
Interest expense	(3,520)	(3,480)	(10,450)	(10,660)
Other income (expense), net	610	410	1,280	(2,330)
Other expense, net	(2,910)	(3,070)	(9,170)	(12,990)
Income before income tax expense	25,780	26,810	76,480	83,620
Income tax expense	(6,670)	(4,140)	(16,260)	(17,030)
Net income	$ 19,110	$ 22,670	$ 60,220	$ 66,590
Basic earnings per share
Net income per share	$ 0.42	$ 0.49	$ 1.33	$ 1.45
Weighted average common shares—basic	45,175,244	45,850,288	45,448,711	45,850,187
Diluted earnings per share
Net income per share	$ 0.42	$ 0.49	$ 1.32	$ 1.44
Weighted average common shares—diluted	45,415,767	46,166,558	45,745,421	46,198,884