Annual report pursuant to Section 13 and 15(d)

Net Loss Per Share - Calculation of Basic and Diluted Net Loss per Share (Details)

v3.20.1
Net Loss Per Share - Calculation of Basic and Diluted Net Loss per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Numerator:                      
Net loss $ (9,579) $ (9,148) $ (8,718) $ (7,642) $ (5,782) $ (5,663) $ (6,775) $ (4,947) $ (35,087) $ (23,167) $ (8,517)
Denominator:                      
Weighted-average shares of common stock outstanding                 19,083,826 10,264,584 599,291
Net loss per common share, basic and diluted $ (0.50) $ (0.48) $ (0.46) $ (0.40) $ (0.30) $ (0.30) $ (3.31) $ (6.53) $ (1.84) $ (2.26) $ (14.21)