Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net Sales	$ 29,100	$ 24,165	$ 87,062	$ 77,179
Cost of sales	8,934	6,910	27,117	22,458
Gross profit	20,166	17,255	59,945	54,721
Sales and marketing	7,429	6,622	22,887	20,504
General and administrative	4,551	3,983	14,026	13,227
Research and development	2,281	2,037	6,777	5,850
Gain on divestiture				(5,876)
Total operating expenses	14,261	12,642	43,690	33,705
Income from operations	5,905	4,613	16,255	21,016
Other income (expense):
Interest income	193	192	574	452
Foreign currency gain (loss)	(208)	(75)	(338)	(275)
Income before income taxes	5,890	4,730	16,491	21,193
Provision for income taxes	706	416	3,170	4,275
Net income	$ 5,184	$ 4,314	$ 13,321	$ 16,918
Earnings per share of common stock:
Basic (in dollars per share)	$ 0.26	$ 0.22	$ 0.68	$ 0.87
Diluted (in dollars per share)	$ 0.25	$ 0.21	$ 0.66	$ 0.84
Weighted-average shares outstanding:
Basic (in shares)	19,871	19,503	19,731	19,369
Diluted (in shares)	20,378	20,293	20,277	20,258
Cash dividends declared per common share (in dollars per share)	$ 0.085	$ 0.07	$ 0.255	$ 0.21