Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net revenues	$ 2,267	$ 2,370	$ 4,706	$ 4,520
Cost of goods sold	1,370	1,596	2,919	3,097
Gross profit	897	774	1,787	1,423
Operating expenses:
Engineering	110	223	296	618
Sales and marketing	279	357	526	657
General and administrative	449	519	848	888
Total operating expenses	838	1,099	1,670	2,163
Income (loss) from operations	59	(325)	117	(740)
Other expenses		(11)		(10)
Income (loss) before income taxes	59	(336)	117	(750)
Provision for income taxes	0			0
Net income (loss)	$ 59	$ (336)	$ 117	$ (750)
Income (loss) per common share:
Basic and diluted (in dollars per share)	$ 0.03	$ (0.16)	$ 0.06	$ (0.37)
Weighted average common shares outstanding:
Basic and diluted (in shares)	2,042	2,042	2,042	2,042