Consolidated Condensed Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Consolidated Condensed Statements Of Operations [Abstract]
Revenue, net	$ 30,109	$ 25,363
Cost of goods sold	21,358	16,951
Gross profit	8,751	8,412
Operating expenses:
Sales and marketing	3,536	2,840
General and administrative	3,425	3,061
Research and development	965	1,159
Total operating expenses	7,926	7,060
Operating income	825	1,352
Interest income (expense), net	215	(188)
Other expense, net	(134)	(208)
Income before income taxes	906	956
Income tax expense	131	187
Net income	$ 775	$ 769
Income per share of common stock:
Net income per share, Basis:	$ 0.09	$ 0.11
Net income per share, Diluted:	$ 0.08	$ 0.10
Average shares outstanding:
Basic	8,705	6,929
Diluted	9,382	7,843