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Registered Offering and Warrants - Schedule of Estimated Fair Value of Warrant Liability (Detail) - Level 3 [Member]
Dec. 31, 2020
USD ($)
yr
Risk-Free Interest Rate [Member] | Warrant [Member]  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]  
Warrant and rights measurement input 0.0040
Expected Volatility [Member] | Warrant [Member]  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]  
Warrant and rights measurement input 1
Expected Term [Member]  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]  
Warrant and rights measurement input | yr 4.7
Expected Term [Member] | Warrant [Member]  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]  
Warrant and rights measurement input | yr 4.7
Expected Dividend Yield [Member] | Warrant [Member]  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]  
Warrant and rights measurement input 0
Strike Price [Member] | Warrant [Member]  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]  
Warrant and rights measurement input | $ 5.95
Fair Value of Common Stock [Member] | Warrant [Member]  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]  
Warrant and rights measurement input | $ 8.26