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Warrants - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Liability Classified Warrant [member] | Other Income (Expense) [Member]        
Class of Warrant or Right [Line Items]        
Change in fair value of warrant liability loss $ 13,461,750 $ 5,451,000 $ (3,181,114) $ (2,060,771)