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Common Stock and Warrants - Summary of Weighted Average Assumptions Used in Estimating Fair Value of Warrants (Details)
Feb. 01, 2021
$ / shares
Oct. 26, 2020
$ / shares
Mar. 20, 2020
$ / shares
Outsiders      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Stock price   $ 15.92  
Exercise price   $ 15.92  
Warrants and Rights Outstanding, Valuation Technique [Extensible Enumeration]   us-gaap:ValuationTechniqueOptionPricingModelMember  
Warrant Term | Outsiders      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Weighted average assumptions, term   3 years  
Expected Volatility | Outsiders      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Weighted average assumptions, measurement input   80.91  
Risk-Free Interest Rate | Outsiders      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Weighted average assumptions, measurement input   0.18  
Dividend Rate | Outsiders      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Weighted average assumptions, measurement input   0.00  
February 2021 Offering      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Exercise price $ 16.302    
Warrants Granted | March 2020 Offering      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Stock price     $ 12.25
Exercise price     $ 16.10
Warrants and Rights Outstanding, Valuation Technique [Extensible Enumeration]     us-gaap:ValuationTechniqueOptionPricingModelMember
Warrants Granted | March 2020 Offering | Warrant Term      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Weighted average assumptions, term     5 years 6 months
Warrants Granted | March 2020 Offering | Expected Volatility      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Weighted average assumptions, measurement input     82.41
Warrants Granted | March 2020 Offering | Risk-Free Interest Rate      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Weighted average assumptions, measurement input     0.52
Warrants Granted | March 2020 Offering | Dividend Rate      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Weighted average assumptions, measurement input     0.00
Warrants Granted | February 2021 Offering      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Stock price 14.82    
Exercise price $ 16.47    
Warrants and Rights Outstanding, Valuation Technique [Extensible Enumeration] us-gaap:ValuationTechniqueOptionPricingModelMember    
Warrants Granted | February 2021 Offering | Warrant Term      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Weighted average assumptions, term 5 years    
Warrants Granted | February 2021 Offering | Expected Volatility      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Weighted average assumptions, measurement input 75.02    
Warrants Granted | February 2021 Offering | Risk-Free Interest Rate      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Weighted average assumptions, measurement input 0.42    
Warrants Granted | February 2021 Offering | Dividend Rate      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]      
Weighted average assumptions, measurement input 0.00