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Investments and Fair Value Instruments - Summary of Preferred Investment Option Liabilities Measured and Recorded on Recurring Basis using Black-Scholes Model (Detail) - Level 3 [Member]
Sep. 30, 2023
Dec. 31, 2022
Remaining Term [Member] | March 2023 Options - Series A & March 2023 Placement Agent Options [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Remaining term (in years) 4 years 5 months 1 day 0 years
Remaining Term [Member] | March 2023 Options - Series B [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Remaining term (in years) 10 months 9 days 0 years
Remaining Term [Member] | August 2022 Options & August 2022 Placement Agent Options [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Remaining term (in years) 3 years 11 months 1 day 4 years 8 months 1 day
Expected Volatility [Member] | March 2023 Options - Series A & March 2023 Placement Agent Options [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Preferred investment options liability, measurement input 106.3 0
Expected Volatility [Member] | March 2023 Options - Series B [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Preferred investment options liability, measurement input 89.9 0
Expected Volatility [Member] | August 2022 Options & August 2022 Placement Agent Options [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Preferred investment options liability, measurement input 92.2 106.2
Risk-Free Interest Rate [Member] | March 2023 Options - Series A & March 2023 Placement Agent Options [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Preferred investment options liability, measurement input 4.7 0
Risk-Free Interest Rate [Member] | March 2023 Options - Series B [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Preferred investment options liability, measurement input 5.5 0
Risk-Free Interest Rate [Member] | August 2022 Options & August 2022 Placement Agent Options [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Preferred investment options liability, measurement input 4.7 4
Expected Dividend Yield [Member] | March 2023 Options - Series A & March 2023 Placement Agent Options [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Preferred investment options liability, measurement input 0 0
Expected Dividend Yield [Member] | March 2023 Options - Series B [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Preferred investment options liability, measurement input 0 0
Expected Dividend Yield [Member] | August 2022 Options & August 2022 Placement Agent Options [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Preferred investment options liability, measurement input 0 0