Quarterly report pursuant to Section 13 or 15(d)

Nature of Operations, Corporate History, and Going Concern and Management Plans - Additional Information (Detail)

v3.21.2
Nature of Operations, Corporate History, and Going Concern and Management Plans - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Mar. 31, 2021
Jun. 30, 2021
Aug. 19, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]          
Common stock, par value $ 0.001     $ 0.001 $ 0.0001
Conversion of convertible common stock     1.5740 shares    
Nature of operations, corporate history, and going concern (Textual)          
Net loss $ (5,966) $ (19,518)      
Negative cash flow from operations (5,073) $ (4,110)      
Cash and cash equivalents 19,339     $ 10,537  
Accumulated deficit $ (119,655)     $ (111,225)  
Substantial Doubt about Companys Ability to Continues Going Concern Period 1 year