v3.21.2
NET LOSS PER SHARE - Reconciliation of Basic and Diluted Net Loss Per Share (Details) - USD ($)
$ / shares in Units, $ 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
Earnings Per Share [Abstract]                
Net loss $ (2,197) $ (3,756) $ (10,379) $ (4,539) $ (9,447) $ (4,945) $ (16,332) $ (18,931)
Weighted average common stock - basic (in shares) 19,291,374     19,112,797     19,256,128 17,700,429
Weighted average common stock - diluted (in shares) 19,291,374     19,112,797     19,256,128 17,700,429
Net loss per share - basic (in dollars per share) $ (0.11)     $ (0.24)     $ (0.85) $ (1.07)
Net loss per share - diluted (in dollars per share) $ (0.11)     $ (0.24)     $ (0.85) $ (1.07)