CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Net product revenue	$ 1,511	$ 1,704
Net customer support and maintenance revenue		10
Total revenue	1,511	1,714
Cost of product revenue	539	629
Cost of customer support and maintenance revenue		3
Total cost of revenue	539	632
Gross profit	972	1,082
Operating expenses:
Sales and marketing	428	498
Research and development	730	538
General and administrative	327	331
Operating loss	(513)	(285)
Interest expense, net	(31)	(25)
Net loss	(544)	(310)
Preferred stock dividends accrued	(35)	(34)
Net loss attributable to common stockholders	$ (579)	$ (344)
Net loss per share attributable to common stockholders:
Basic (in dollars per share)	$ (0.05)	$ (0.03)
Diluted (in dollars per share)	$ (0.05)	$ (0.03)
Weighted average common shares outstanding:
Basic (in shares)	12,703	12,555
Diluted (in shares)	12,703	12,555