Condensed Consolidated Statements of Operations - USD ($) shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues
Product revenues	$ 9,569,000	$ 7,334,000	$ 17,295,000	$ 13,659,000
Service revenues	4,387,000	3,374,000	7,908,000	6,627,000
Royalties		902,000		1,801,000
Total revenues	13,956,000	11,610,000	25,203,000	22,087,000
Cost of product revenues	5,303,000	4,182,000	9,617,000	8,209,000
Cost of service revenues	2,347,000	2,285,000	4,590,000	4,608,000
Total cost of revenues	7,650,000	6,467,000	14,207,000	12,817,000
Gross profit	6,306,000	5,143,000	10,996,000	9,270,000
Operating expenses
Sales and marketing	410,000	379,000	788,000	651,000
Research and development	1,648,000	3,797,000	2,994,000	5,930,000
General and administrative	4,604,000	3,244,000	9,025,000	6,704,000
Total operating expenses	6,662,000	7,420,000	12,807,000	13,285,000
Loss from operations	(356,000)	(2,277,000)	(1,811,000)	(4,015,000)
Interest expense, net	(30,000)	(24,000)	(58,000)	(50,000)
Other income, net	10,000	81,000	52,000	206,000
Total non-operating (loss) income	(20,000)	57,000	(6,000)	156,000
Loss before income taxes	(376,000)	(2,220,000)	(1,817,000)	(3,859,000)
Provision for income taxes	0	48,000	0	52,000
Net loss	$ (376,000)	$ (2,268,000)	$ (1,817,000)	$ (3,911,000)
Basic net income (loss) per common share	$ 0.01	$ (0.21)	$ (0.13)	$ (0.36)
Diluted net loss per common share	$ (0.03)	$ (0.21)	$ (0.13)	$ (0.36)
Basic weighted average common shares outstanding	10,803	10,789	10,803	10,789
Diluted weighted average common shares outstanding	10,954	10,789	10,803	10,789