Net Loss per Share - Reconciliation of Numerator and Denominator Used in Calculation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Abstract]
Net loss attributable to common stockholders	$ (19,774)	$ (14,657)
Weighted average number of shares of common stock	4,621	1,070
Basic and diluted net loss per share	$ (4.28)	$ (13.70)