Annual report pursuant to Section 13 and 15(d)

Common Stock - Computation of Basic and Diluted Net Loss Attributable to Common Shareholders Per Share (Detail)

v3.20.1
Common Stock - Computation of Basic and Diluted Net Loss Attributable to Common Shareholders Per Share (Detail) - 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 $ (3,194) $ (3,673) $ (3,624) $ (5,904) $ (3,637) $ (3,240) $ (2,788) $ (3,022) $ (16,395) $ (12,687) $ (10,583)
Denominator                      
Weighted average number of common shares outstanding                 8,246,400 3,510,217 479,442
Basic and diluted net loss per common share $ (0.30) $ (0.45) $ (0.50) $ (0.88) $ (0.55) $ (0.71) $ (1.82) $ (2.43) $ (1.99) $ (3.61) $ (22.07)