Consolidated Statements of Operations - USD ($) shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Net product revenue	$ 6,102,000	$ 6,795,000
Net customer support and maintenance revenue		29,000
Total revenue	6,102,000	6,824,000
Cost of product revenue	2,183,000	2,517,000
Cost of customer support and maintenance revenue		13,000
Total cost of revenue	2,183,000	2,530,000
Gross profit	3,919,000	4,294,000
Operating expenses:
Sales and marketing	1,637,000	1,894,000
Research and development	2,499,000	2,315,000
General and administrative	1,190,000	1,227,000
Operating loss	(1,407,000)	(1,142,000)
Interest expense, net	(145,000)	(107,000)
Loss from operations before income taxes	(1,552,000)	(1,249,000)
Income tax provision
Net loss	(1,552,000)	(1,249,000)
Preferred stock dividends accrued	(139,000)	(139,000)
Net loss attributable to common stockholders	$ (1,691,000)	$ (1,388,000)
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (0.13)	$ (0.11)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (0.13)	$ (0.11)
Weighted average common shares outstanding:
Basic (in shares)	12,737	12,598
Diluted (in shares)	12,737	12,598