Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenue:
Service	$ 3,252	$ 3,072	$ 9,650	$ 9,808
Subscription	1,417	1,561	4,374	4,947
License	907	753	2,589	2,418
Total revenue	5,576	5,386	16,613	17,173
Cost of revenue:
Service	1,455	1,204	4,288	4,279
Subscription	600	808	1,856	2,428
License	107	86	302	256
Total cost of revenue	2,162	2,098	6,446	6,963
Gross profit	3,414	3,288	10,167	10,210
Operating expenses:
Sales and marketing	2,945	2,309	8,756	6,497
Research, development and engineering	3,291	3,236	9,975	9,345
General and administrative	2,039	1,847	6,185	6,033
Intellectual property	394	367	1,290	1,025
Total operating expenses	8,669	7,759	26,206	22,900
Operating loss	(5,255)	(4,471)	(16,039)	(12,690)
Other income, net	69	29	157	84
Loss before income taxes	(5,186)	(4,442)	(15,882)	(12,606)
Provision for income taxes	(12)	(27)	(34)	(25)
Net loss	$ (5,198)	$ (4,469)	$ (15,916)	$ (12,631)
Earnings (loss) per common share:
Loss per common share—basic	$ (0.55)	$ (0.54)	$ (1.79)	$ (1.56)
Loss per common share—diluted	$ (0.55)	$ (0.54)	$ (1.79)	$ (1.56)
Weighted average common shares outstanding—basic	9,506	8,309	8,878	8,101
Weighted average common shares outstanding—diluted	9,506	8,309	8,878	8,101