Unaudited Condensed Consolidated Statement of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Unaudited Condensed Consolidated Statement of Operations
Revenue	$ 19	$ 23	$ 19	$ 38
Cost of sales	34		34
Gross profit	(15)	23	(15)	38
Expenses:
Sales and marketing expenses	635	258	1,268	590
Research and development expenses	7,539	5,195	13,955	8,860
General and administrative expenses	3,361	1,478	7,241	2,895
Operating loss	(11,550)	(6,908)	(22,479)	(12,307)
Other income (expense), net:
Interest income	31	2	34	3
Interest expense	(268)	(265)	(544)	(568)
Other expense	(74)	(14)	(89)	(5)
Net loss	$ (11,861)	$ (7,185)	$ (23,078)	$ (12,877)
Basic and diluted net loss per common share	$ (0.13)	$ (3.68)	$ (0.27)	$ (6.63)
Basic and diluted weighted-average shares outstanding (in shares)	92,742,097	1,950,399	85,033,493	1,942,287