Quarterly report pursuant to Section 13 or 15(d)

Liquidity and Management Plans - Additional Information (Detail)

v3.21.2
Liquidity and Management Plans - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Liquidity And Management Plans [Line Items]              
Engineering product development $ 184,960   $ 114,375   $ 330,025 $ 175,850  
Net loss (11,015,829) $ (8,525,763) (8,204,666) $ (8,597,736) (19,541,592) (16,802,402)  
Net cash provided by (used in) operating activities         (12,537,690) (13,215,844)  
Proceeds of securities offerings           14,723,491 $ 53,556,202
Cash and cash equivalents, at carrying value, total 38,226,214       38,226,214   $ 50,729,661
Technology Service [Member]              
Liquidity And Management Plans [Line Items]              
Engineering product development $ 184,960   $ 114,375   $ 330,025 $ 175,850