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Condensed Consolidated Statements of Operations (Unaudited) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Revenue $ 1,849 $ 584 $ 4,689 $ 695
Cost of revenue 1,158 417 3,116 520
Gross profit 691 167 1,573 175
Operating expenses:        
Research and development 2,054 1,515 6,313 3,446
Selling, general and administrative 3,272 1,757 8,435 5,155
Total operating expenses 5,326 3,272 14,748 8,601
Loss from operations (4,635) (3,105) (13,175) (8,426)
Interest expense, net (221) (114) (1,094) (302)
Other expense, net (13) (22) (21)
Comprehensive and net loss $ (4,869) $ (3,219) $ (14,291) $ (8,749)
Net loss per share:        
Basic and diluted (in dollars per share) $ (0.46) $ (0.50) $ (1.63) $ (1.99)
Weighted average shares used in computing net loss per common share        
Basic and diluted (in shares) 10,630,468 6,418,457 8,741,667 4,403,620