Annual report pursuant to Section 13 and 15(d)

Loss Per Share Attributable to Common Stockholders - Additional Information (Details)

v3.20.1
Loss Per Share Attributable to Common Stockholders - Additional Information (Details) - shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Earnings Per Share [Abstract]    
Weighted-average number of outstanding shares of common stock excluded from calculation of diluted net loss per share 1,244,043 580,580