CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues:
Product	$ 1,249	$ 2,192	$ 1,634
Maintenance	2,563	2,577	2,525
Total	3,812	4,769	4,159
Cost of revenues:
Product	243	1,117	257
Maintenance	827	827	735
Gross profit	2,742	2,825	3,167
Operating expenses:
General and administrative	3,722	3,437	3,818
Sales and marketing	3,021	2,791	2,471
Research and development	5,332	4,643	4,495
Depreciation and amortization	129	164	179
Total	12,204	11,035	10,963
Loss from operations	(9,462)	(8,210)	(7,796)
Interest expense	245	447	416
Other income, net	(201)	(145)	(297)
Loss before income taxes	(9,506)	(8,512)	(7,915)
Income tax expense	21	22	25
Net loss	(9,527)	(8,534)	(7,940)
Preferred dividends	(1,347)	(1,065)	(51)
Net loss available to common shareholders	$ (10,874)	$ (9,599)	$ (7,991)
Basic and diluted loss per common share - see Note 2:
Net loss	$ (0.1)	$ (0.09)	$ (0.09)
Preferred dividends	(0.02)	(0.01)
Basic and diluted loss per share available to common shareholders	$ (0.12)	$ (0.1)	$ (0.09)
Basic and diluted weighted-average shares outstanding	94,426,783	93,786,079	91,795,971