CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CONSOLIDATED STATEMENTS OF INCOME
Net sales	$ 416,268	$ 400,408	$ 303,511
Cost of sales	282,294	267,545	187,185
Gross profit	133,974	132,863	116,326
Selling, general, and administrative expense	54,260	48,150	38,306
Intangibles amortization	10,596	7,362	5,803
Income from operations	69,118	77,351	72,217
Interest expense, net	(15,195)	(10,895)	(8,129)
Loss on extinguishment of debt			(1,870)
Litigation proceeds	10,050
Other expense, net	(277)	(193)	(221)
Income before taxes	63,696	66,263	61,997
Income tax expense	24,687	22,087	22,036
Net income	39,009	44,176	39,961
Less net income attributable to participating securities	540	604	609
Net income attributable to common shareholders	$ 38,469	$ 43,572	$ 39,352
Weighted average number of common shares outstanding:
Basic (in shares)	22,480,679	22,329,044	22,168,500
Diluted (in shares)	22,480,679	22,341,775	22,188,846
Earnings per common share:
Basic (in dollars per share)	$ 1.71	$ 1.95	$ 1.78
Diluted (in dollars per share)	1.70	1.94	1.77
Cash dividends declared per share (in dollars per share)	0.94	0.89	0.87
Cash dividends paid per share (in dollars per share)	$ 0.94	$ 0.89	$ 0.87