Consolidated Income Statements (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Gross sales	$ 112,233	$ 99,867	$ 350,431	$ 312,856
Commissions, allowances and rebates	225	565	1,468	1,901
Net sales	112,008	99,302	348,963	310,955
Other revenues, net	611	97	3,216	1,823
Net revenue	112,619	99,399	352,179	312,778
Cost of goods sold	65,730	61,797	200,963	187,720
Gross profit	46,889	37,602	151,216	125,058
Operating expenses:
Selling, general and administrative expenses	17,551	14,950	51,785	42,602
Research and development expenses	4,233	3,193	12,590	10,796
Total operating expenses	21,784	18,143	64,375	53,398
Operating profit	25,105	19,459	86,841	71,660
Other expenses/(income):
Interest expense, net	337	366	991	357
Other (income)/expenses, net	(6)	(71)	(149)	143
Income before income taxes	24,774	19,164	85,999	71,160
Provision for income taxes	7,498	5,443	22,484	21,784
Income from continuing operations	17,276	13,721	63,515	49,376
Income/(loss) from discontinued operations, net of tax	20	(4,503)	(1,324)	(5,082)
Net income	$ 17,296	$ 9,218	$ 62,191	$ 44,294
Basic earnings/(loss) per share of common stock:
Income from continuing operations (in dollars per share)	$ 0.53	$ 0.43	$ 1.95	$ 1.54
Income/(loss) from discontinued operations, net of tax (in dollars per share)	0	(0.14)	(0.04)	(0.16)
Net income (in dollars per share)	0.53	0.29	1.91	1.38
Diluted earnings/(loss) per share of common stock:
Income from continuing operations (in dollars per share)	0.52	0.42	1.90	1.50
Income/(loss) from discontinued operations, net of tax (in dollars per share)	0	(0.14)	(0.04)	(0.15)
Net income (in dollars per share)	$ 0.52	$ 0.28	$ 1.86	$ 1.35
Weighted average shares outstanding:
Basic (in shares)	32,749	32,149	32,612	32,034
Effect of dilutive stock based compensation (in shares)	763	850	839	871
Diluted (in shares)	33,512	32,999	33,451	32,905