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)

v3.22.0.1
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, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Numerator                      
Net loss $ (7,151) $ (6,691) $ (11,311) $ (7,999) $ (4,724) $ (3,764) $ (2,922) $ (3,320) $ (33,152) $ (14,730) $ (16,395)
Denominator                      
Weighted average number of common shares outstanding                 8,119,836 2,718,909 412,320
Basic and diluted net loss per common share $ (0.76) $ (0.71) $ (1.53) $ (1.30) $ (1.11) $ (1.14) $ (1.68) $ (2.15) $ (4.08) $ (5.42) $ (39.76)