Quarterly report pursuant to Section 13 or 15(d)

Nature of Business, Basis of Presentation and Liquidity Risk - Additional Information (Detail)

v3.21.2
Nature of Business, Basis of Presentation and Liquidity Risk - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Accounting Policies [Abstract]                  
Accumulated deficit $ (86,435)           $ (86,435)   $ (60,434)
Net loss (6,691) $ (11,311) $ (7,999) $ (3,764) $ (2,922) $ (3,320) (26,001) $ (10,006)  
Cash and cash equivalents 33,312           33,312   $ 35,853
Working capital $ 31,700           31,700    
Net cash used in operating activities             $ 24,222 $ 10,994