Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenue:
Product	$ 5,240	$ 99
Service	216	181
Total revenue	5,456	280
Cost of revenue:
Product	5,927	154
Service	601	623
Total cost of revenue	6,528	777
Gross margin	(1,072)	(497)
Operating expenses:
Research and development	3,399	2,248
Selling and marketing	1,279	964
General and administrative	6,320	4,323
Total operating expenses	10,998	7,535
Loss from operations	(12,070)	(8,032)
Interest income	1	1
Interest expense	(1,082)	(484)
Other income (expense), net	(217)	60
Loss before provision for income taxes	(13,368)	(8,455)
Provision for income taxes	0	0
Net loss attributable to common stockholders	$ (13,368)	$ (8,455)
Net loss per share attributable to common stockholders, basic and diluted	$ (0.35)	$ (9.27)
Weighted-average common shares used to compute net loss per share attributable to common stockholders, basic and diluted	38,211,439	911,922