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Condensed Consolidated Statements of Operations (Unaudited) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Revenue $ 4,070 $ 1,849 $ 10,187 $ 4,689
Cost of revenue 2,059 1,158 5,515 3,116
Gross profit 2,011 691 4,672 1,573
Operating expenses:        
Research and development 3,464 2,054 9,292 6,313
Selling, general and administrative 7,369 3,272 19,681 8,435
Total operating expenses 10,833 5,326 28,973 14,748
Loss from operations (8,822) (4,635) (24,301) (13,175)
Interest expense, net (777) (221) (2,385) (1,094)
Other expense, net (16) (13) (49) (22)
Comprehensive and net loss $ (9,615) $ (4,869) $ (26,735) $ (14,291)
Net loss per share:        
Basic and diluted (in dollars per share) $ (0.50) $ (0.46) $ (1.59) $ (1.63)
Weighted average shares used in computing net loss per common share:        
Basic and diluted (in shares) 19,408,920 10,630,468 16,843,706 8,741,667