Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Condensed Consolidated Statements of Income
Revenue, net	$ 2,884	$ 2,805
Cost of revenue	1,148	1,134
Gross profit	1,736	1,671
Operating expenses:
Engineering, research and development	178	141
Selling, general and administrative	1,027	912
Total operating expenses	1,205	1,053
Income from operations	531	618
Other income (expense)
Other income (expense), net	19	14
Income from continuing operations before income tax expense	550	632
Income tax expense	(186)	(26)
Net income	364	606
Other comprehensive income, net of tax:
Foreign currency translation adjustments	11	4
Comprehensive income	$ 375	$ 610
Earnings per share, basic and diluted	$ 0.05	$ 0.08
Weighted average common shares outstanding - basic	7,328	7,326
Weighted average common shares outstanding - diluted	7,412	7,391