Condensed Consolidated Statements of Operations - USD ($) shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues
Product revenues	$ 9,343,000	$ 9,569,000	$ 19,417,000	$ 17,295,000
Service revenues	5,717,000	4,387,000	11,167,000	7,908,000
License revenues	250,000		250,000
Total revenues	15,310,000	13,956,000	30,834,000	25,203,000
Cost of product revenues	6,158,000	5,303,000	12,174,000	9,617,000
Cost of service revenues	2,959,000	2,347,000	5,969,000	4,590,000
Total cost of revenues	9,117,000	7,650,000	18,143,000	14,207,000
Gross profit	6,193,000	6,306,000	12,691,000	10,996,000
Operating expenses
Sales and marketing	563,000	410,000	982,000	788,000
Research and development	1,055,000	1,648,000	2,029,000	2,994,000
General and administrative	6,518,000	4,604,000	10,607,000	9,025,000
Total operating expenses	8,136,000	6,662,000	13,618,000	12,807,000
Loss from operations	(1,943,000)	(356,000)	(927,000)	(1,811,000)
Interest expense, net	(29,000)	(30,000)	(74,000)	(58,000)
Other income, net	758,000	10,000	559,000	52,000
Total non-operating income (expense)	729,000	(20,000)	485,000	(6,000)
Loss before income taxes	(1,214,000)	(376,000)	(442,000)	(1,817,000)
Income tax expense	300,000	0	300,000	0
Net loss	(1,514,000)	(376,000)	(742,000)	(1,817,000)
Adjustments attributable to preferred stockholders		452,000		445,000
Net (loss) income available to common stockholders	$ (1,514,000)	$ 76,000	$ (742,000)	$ (1,372,000)
Basic net (loss) income per common share	$ (0.14)	$ 0.01	$ (0.07)	$ (0.13)
Diluted net (loss) income per common share	$ (0.14)	$ (0.03)	$ (0.07)	$ (0.13)
Basic weighted average common shares outstanding	11,103	10,803	11,023	10,803
Diluted weighted average common shares outstanding	11,103	10,954	11,023	10,803