Quarterly report pursuant to Section 13 or 15(d)

Net Loss Per Share Attributable to Common Stockholders - Schedule of Computation of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders (Details)

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Net Loss Per Share Attributable to Common Stockholders - Schedule of Computation of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Numerator:    
Net loss allocable to common stockholders $ (6,206) $ (8,038)
Denominator:    
Weighted–average shares used in computing net loss per share attributable to common stockholders, basic and diluted 15,783,744 1,034,641
Net loss per share attributable to common stockholders, basic and diluted $ (0.39) $ (7.77)