Consolidated Statement of Income Statement - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net sales	$ 223,780	$ 209,330	$ 665,790	$ 622,530
Cost of sales	(162,060)	(150,440)	(478,910)	(452,350)
Gross profit	61,720	58,890	186,880	170,180
Selling, general and administrative expenses	(31,840)	(30,600)	(90,270)	(99,560)
Operating profit	29,880	28,290	96,610	70,620
Other expense, net:
Interest expense	(3,480)	(3,390)	(10,660)	(10,360)
Debt financing and related expenses	0	(6,640)	0	(6,640)
Other income (expense), net	410	(370)	(2,330)	(1,290)
Other expense, net	(3,070)	(10,400)	(12,990)	(18,290)
Income before income tax expense	26,810	17,890	83,620	52,330
Income tax expense	(4,140)	(4,760)	(17,030)	(17,360)
Net income	$ 22,670	$ 13,130	$ 66,590	$ 34,970
Basic earnings per share
Net income per share	$ 0.49	$ 0.29	$ 1.45	$ 0.77
Weighted average common shares—basic	45,850,288	45,721,155	45,850,187	45,669,782
Diluted earnings per share
Net income per share	$ 0.49	$ 0.29	$ 1.44	$ 0.76
Weighted average common shares—diluted	46,166,558	46,029,361	46,198,884	45,953,578