Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net Sales	$ 35,883	$ 30,551
Cost of sales	12,084	10,068
Gross profit	23,799	20,483
Sales and marketing	6,466	7,945
General and administrative	6,544	5,191
Research and development	2,844	2,994
Total operating expenses	15,854	16,130
Income from operations	7,945	4,353
Other income (expense):
Interest income	1	105
Interest expense	(577)	0
Foreign currency gain (loss)	124	(178)
Income before income taxes	7,493	4,280
Provision for income taxes	1,564	1,106
Net income	$ 5,929	$ 3,174
Earnings per share of common stock:
Basic (in dollars per share)	$ 0.29	$ 0.16
Diluted (in dollars per share)	$ 0.28	$ 0.16
Weighted-average shares outstanding:
Basic (in shares)	20,546	20,168
Diluted (in shares)	20,847	20,438
Cash dividends declared per common share (in dollars per share)	$ 0.110	$ 0.095