Consolidated Income Statements (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Gross sales	$ 119,054	$ 106,379	$ 212,989	$ 184,563
Commissions, allowances and rebates	833	365	1,336	816
Net sales	118,221	106,014	211,653	183,747
Other revenue	417	621	1,726	413
Net revenues	118,638	106,635	213,379	184,160
Cost of goods sold	70,081	60,690	125,923	109,136
Gross profit	48,557	45,945	87,456	75,024
Operating expenses:
Selling, general and administrative expenses	13,607	14,078	27,652	27,829
Research and development expenses	4,125	2,703	7,603	5,358
Total operating expenses	17,732	16,781	35,255	33,187
Operating profit	30,825	29,164	52,201	41,837
Other expenses/(income):
Interest expense/(income), net	46	474	(9)	950
Other expenses/(income), net	180	(232)	214	(170)
Income before income taxes	30,599	28,922	51,996	41,057
Provision for income taxes	9,789	9,472	16,341	13,239
Income from continuing operations	20,810	19,450	35,655	27,818
(Loss)/income from discontinued operations, net of tax	(316)	213	(579)	(162)
Net income	$ 20,494	$ 19,663	$ 35,076	$ 27,656
Basic earnings/(loss) per share of common stock:
Income from continuing operations (in dollars per share)	$ 0.65	$ 0.62	$ 1.12	$ 0.89
(Loss)/income from discontinued operations, net of tax (in dollars per share)	(0.01)	0.01	(0.02)	(0.01)
Net income (in dollars per share)	0.64	0.63	1.10	0.88
Diluted earnings/(loss) per share of common stock:
Income from continuing operations (in dollars per share)	0.63	0.60	1.09	0.86
(Loss)/income from discontinued operations, net of tax (in dollars per share)	(0.01)	0.01	(0.02)
Net income (in dollars per share)	$ 0.62	$ 0.61	$ 1.07	$ 0.86
Weighted average shares outstanding:
Basic (in shares)	32,063	31,344	31,975	31,271
Effect of dilutive stock based compensation (in shares)	863	1,096	873	1,038
Diluted (in shares)	32,926	32,440	32,848	32,309