Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Condensed Consolidated Statements of Income
Revenue, net	$ 11,886	$ 10,514
Cost of revenue	4,880	4,869
Gross profit	7,006	5,645
Operating expenses:
Engineering, research and development	623	841
Selling, general and administrative	3,536	3,122
Total operating expenses	4,159	3,963
Income from operations	2,847	1,682
Other income (expense)
Other income (expense), net	40	38
Income from continuing operations before income tax expense (benefit)	2,887	1,720
Income tax benefit (expense)	6	11
Net income	2,893	1,731
Other comprehensive income, net of tax:
Foreign currency translation adjustments	(77)	(21)
Comprehensive income	$ 2,816	$ 1,710
Earnings per share, basic and diluted	$ 0.39	$ 0.23
Weighted average common shares outstanding - basic	7,327	7,325
Weighted average common shares outstanding - diluted	7,407	7,380