Condensed Consolidated Statements of Operations - USD ($) shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues
Product revenues	$ 8,389,000	$ 7,057,000	$ 25,684,000	$ 20,716,000
Service revenues	4,597,000	3,337,000	12,505,000	9,964,000
Royalties		1,162,000		2,963,000
Total revenues	12,986,000	11,556,000	38,189,000	33,643,000
Cost of product revenues	5,160,000	3,683,000	14,776,000	11,892,000
Cost of service revenues	2,559,000	2,022,000	7,149,000	6,630,000
Total cost of revenues	7,719,000	5,705,000	21,925,000	18,522,000
Gross profit	5,267,000	5,851,000	16,264,000	15,121,000
Operating expenses
Sales and marketing	517,000	259,000	1,306,000	910,000
Research and development	2,291,000	2,304,000	5,285,000	8,234,000
General and administrative	3,238,000	3,111,000	12,263,000	9,815,000
Restructuring charge	756,000		756,000
Total operating expenses	6,802,000	5,674,000	19,610,000	18,959,000
(Loss) income from operations	(1,535,000)	177,000	(3,346,000)	(3,838,000)
Interest expense, net	(47,000)	(24,000)	(105,000)	(74,000)
Other income, net	127,000	90,000	179,000	296,000
Total non-operating income	80,000	66,000	74,000	222,000
(Loss) income before income taxes	(1,455,000)	243,000	(3,272,000)	(3,616,000)
Income tax (benefit) expense	(45,000)	(5,000)	(45,000)	47,000
Net (loss) income	$ (1,410,000)	$ 248,000	$ (3,227,000)	$ (3,663,000)
Basic net (loss) income per common share	$ (0.13)	$ 0.02	$ (0.26)	$ (0.34)
Diluted net (loss) income per common share	$ (0.13)	$ 0.02	$ (0.26)	$ (0.34)
Basic weighted average common shares outstanding	10,844	10,799	10,817	10,791
Diluted weighted average common shares outstanding	10,844	11,060	10,817	10,791