CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Revenue:
Product	$ 1,761	$ 1,614
Maintenance	2,643	2,679
Revenues	4,404	4,293
Cost of revenue:
Product	205	152
Maintenance	671	839
Gross profit	3,528	3,302
Operating expenses:
General and administrative	4,285	3,723
Sales and marketing	3,571	2,816
Research and development	7,351	6,324
Depreciation and amortization	51	68
Total	15,258	12,931
Loss from operations	(11,730)	(9,727)
Interest expense	463	591
Change in fair value of derivative liabilities	232	0
Other components of net periodic pension expense	118	98
Other income, net	(34)	(125)
Loss before income taxes	(12,539)	(10,193)
Income tax expense (benefit)	11	(124)
Net loss	(12,550)	(10,069)
Preferred dividends, deemed dividends and accretion	(3,913)	(2,400)
Preferred stock exchange	0	(1,245)
Net loss available to common shareholders	$ (16,463)	$ (13,714)
Basic and diluted loss per common share - see Note 2:
Net loss	$ (0.13)	$ (0.11)
Preferred dividends	(0.04)	(0.03)
Preferred stock exchange	(0.00)	(0.01)
Basic and diluted loss per share available to common shareholders	$ (0.17)	$ (0.15)
Basic and diluted weighted-average shares outstanding	95,210,572	92,816,723