Net Loss Per Share - Schedule of Basic and Diluted Net Loss per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share [Abstract]
Net loss	$ (58,789)	$ (31,823)
Weighted-average number of shares used in computing net loss per share, basic and diluted	13,516,844	10,160,879
Net loss per share, basic and diluted	$ (4.35)	$ (3.13)