Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenue:
Service	$ 2,986	$ 3,252	$ 9,935	$ 9,650
Subscription	1,306	1,417	4,171	4,374
License	4,385	907	6,249	2,589
Total revenue	8,677	5,576	20,355	16,613
Cost of revenue:
Service	1,332	1,455	4,431	4,288
Subscription	611	600	1,701	1,856
License	129	107	369	302
Total cost of revenue	2,072	2,162	6,501	6,446
Gross profit	6,605	3,414	13,854	10,167
Operating expenses:
Sales and marketing	4,075	2,945	12,064	8,756
Research, development and engineering	4,108	3,291	11,503	9,975
General and administrative	2,442	2,039	7,066	6,185
Intellectual property	387	394	1,124	1,290
Total operating expenses	11,012	8,669	31,757	26,206
Operating loss	(4,407)	(5,255)	(17,903)	(16,039)
Other income, net	174	69	408	157
Loss before income taxes	(4,233)	(5,186)	(17,495)	(15,882)
Benefit (provision) for income taxes	(7)	(12)	94	(34)
Net loss	$ (4,240)	$ (5,198)	$ (17,401)	$ (15,916)
Earnings (loss) per common share:
Loss per common share—basic	$ (0.39)	$ (0.55)	$ (1.67)	$ (1.79)
Loss per common share—diluted	$ (0.39)	$ (0.55)	$ (1.67)	$ (1.79)
Weighted average common shares outstanding—basic	10,797	9,506	10,410	8,878
Weighted average common shares outstanding—diluted	10,797	9,506	10,410	8,878