Unaudited Condensed Consolidated Statement of Operations and Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Unaudited Condensed Consolidated Statement of Operations and Comprehensive Income
Revenue	$ 37		$ 56	$ 38
Cost of sales	114		148
Gross profit	(77)		(92)	38
Expenses:
Sales and marketing expenses	733	$ 351	2,001	941
Research and development expenses	6,883	4,682	20,838	13,542
General and administrative expenses	2,819	3,282	10,060	6,178
Operating loss	(10,512)	(8,315)	(32,991)	(20,623)
Other income (expense), net:
Interest income	35	2	69	5
Interest expense	(502)	(266)	(1,045)	(834)
Other income (expense)	92	(6)	3	(11)
Net loss	(10,887)	(8,585)	(33,964)	(21,463)
Total comprehensive loss	$ (10,887)	$ (8,585)	$ (33,964)	$ (21,463)
Basic and diluted net loss per common share	$ (0.12)	$ (4.39)	$ (0.39)	$ (11.07)
Basic and diluted weighted-average shares outstanding (in shares)	93,386,139	1,955,222	87,838,031	1,939,588