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Share-based Compensation - Black-Scholes Option Pricing Model to Estimate the Fair Value of Units Granted (Details) - $ / shares
 10 Months Ended 12 Months Ended
Dec. 31, 2018
Dec. 31, 2020
Dec. 31, 2019
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]      
Expected life of units (years)   10 years  
Expected annualized volatility   143.00%  
Bottom of Range      
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]      
Risk-free interest rate 1.65% 0.28% 1.41%
Expected life of units (years) 6 months   2 years
Expected annualized volatility 80.00%   97.00%
Weighted average Black-Scholes value of each unit $ 1.76 $ 1.13 $ 0.67
Top of Range      
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]      
Risk-free interest rate 2.05% 0.29% 1.88%
Expected life of units (years) 14 years   10 years
Expected annualized volatility 106.00%   116.00%
Weighted average Black-Scholes value of each unit $ 3.81 $ 1.17 $ 23.55