Condensed Consolidated Statements of Operations - USD ($) shares in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenues
Product revenues	$ 7,726,000	$ 6,325,000
Service revenues	3,521,000	3,253,000
Royalties		899,000
Total revenues	11,247,000	10,477,000
Cost of product revenues	4,313,000	4,027,000
Cost of service revenues	2,243,000	2,323,000
Total cost of revenues	6,556,000	6,350,000
Gross profit	4,691,000	4,127,000
Operating expenses
Sales and marketing	379,000	272,000
Research and development	1,346,000	2,133,000
General and administrative	4,421,000	3,460,000
Total operating expenses	6,146,000	5,865,000
Loss from operations	(1,455,000)	(1,738,000)
Interest expense, net	(28,000)	(26,000)
Other income, net	42,000	125,000
Total non-operating income	14,000	99,000
Loss before income taxes	(1,441,000)	(1,639,000)
Provision for income taxes	0	4,000
Net loss	$ (1,441,000)	$ (1,643,000)
Basic net loss per common share	$ (0.13)	$ (0.15)
Diluted net loss per common share	$ (0.13)	$ (0.15)
Basic weighted average common shares outstanding	10,803	10,789
Diluted weighted average common shares outstanding	10,803	10,789