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Summary of Significant Accounting Policies - Reconciliation of Numerators and Denominators used in Computing Basic and Diluted Net Income Per Share (Detail) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Accounting Policies [Abstract]        
Net income (loss) $ 2,227,499 $ 4,098,623 $ 5,947,717 $ 6,996,598
Numerator, basic and diluted net income (loss) available to stockholders $ (2,227,499) $ (4,098,623) $ (5,947,717) $ (6,996,598)
Shares used in computation – basic:        
Weighted average common shares outstanding 13,023,330 9,542,449 12,818,266 9,530,056
Common shares outstanding for basic 13,023,330 9,542,449 12,818,266 9,530,056
Shares used in computation – diluted:        
Common shares outstanding for basic 13,023,330 9,542,449 12,818,266 9,530,056
Shares used in computing diluted net income per share 13,023,330 9,542,449 12,818,266 9,530,056
Net (loss) per share – basic $ (0.17) $ (0.43) $ (0.46) $ (0.73)
Net (loss) per share – diluted $ (0.17) $ (0.43) $ (0.46) $ (0.73)