XML 84 R70.htm IDEA: XBRL DOCUMENT v3.21.1
Fair Value Measurements - Schedule of Fair Value of Outstanding Warrants (Details)
Dec. 31, 2020
Dec. 31, 2019
Contractual Term [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Warrants expiration period 4 years 3 months 18 days 4 years 7 months 6 days
Expected Volatility [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Warrants measurement input 2.082 2.0750
Risk-free Interest Rates [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Warrants measurement input 0.0140 0.0170