Consolidated Statement of Income Statement - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net sales	$ 213,370	$ 203,320	$ 413,200	$ 406,200
Cost of sales	(153,960)	(146,240)	(302,030)	(293,200)
Gross profit	59,410	57,080	111,170	113,000
Selling, general and administrative expenses	(33,160)	(38,420)	(69,180)	(77,890)
Operating profit	26,250	18,660	41,990	35,110
Other expense, net:
Interest expense	(3,420)	(3,310)	(6,970)	(6,750)
Other income (expense), net	30	130	(580)	70
Other expense, net	(3,390)	(3,180)	(7,550)	(6,680)
Income before income tax expense	22,860	15,480	34,440	28,430
Income tax expense	(8,010)	(5,000)	(12,600)	(9,650)
Net income	$ 14,850	$ 10,480	$ 21,840	$ 18,780
Basic earnings per share
Net income per share	$ 0.32	$ 0.23	$ 0.48	$ 0.41
Weighted average common shares—basic	45,717,697	45,429,851	45,644,096	45,354,421
Diluted earnings per share
Net income per share	$ 0.32	$ 0.23	$ 0.48	$ 0.41
Weighted average common shares—diluted	45,922,416	45,726,348	45,915,687	45,690,582