Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net Sales	$ 112,937	$ 113,668	$ 321,607	$ 301,072
Gross profit	32,763	35,658	75,738	92,322
Selling, general and administrative expenses	13,190	13,034	36,495	35,535
(Gain) loss on disposal of assets	2	(1)	(9)	46
Income from operations	19,571	22,625	39,252	56,741
Interest income, net	36	84	171	215
Other (expense) income, net	5	41	11	86
Income before taxes	19,612	22,750	39,434	57,042
Income tax provision	5,527	8,033	9,398	18,314
Net income	$ 14,085	$ 14,717	$ 30,036	$ 38,728
Earnings per share:
Basic (usd per share)	$ 0.27	$ 0.28	$ 0.57	$ 0.74
Diluted (usd per share)	0.27	0.28	0.57	0.73
Cash dividends declared per common share:	$ 0	$ 0	$ 0.16	$ 0.13
Weighted average shares outstanding:
Basic (in shares)	52,238,796	52,566,619	52,315,719	52,586,429
Diluted (in shares)	52,627,541	53,014,269	52,715,390	53,103,408
Product
Net Sales	$ 112,937	$ 113,668	$ 321,607	$ 301,072
Cost of sales	$ 80,174	$ 78,010	$ 245,869	$ 208,750