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Stockholders' Equity - Summary of Estimated Fair Value of Stock Option Awards Granted Using Black-Scholes Option-Pricing Model (Details)
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Expected volatility, minimum 89.90% 94.00%
Expected volatility, maximum 91.00% 97.60%
Risk-free interest rate, minimum 1.60% 0.70%
Risk-free interest rate, maximum 2.80% 1.00%
Minimum [Member]    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Expected term (years) 5 years 6 months 5 years 6 months
Maximum    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Expected term (years) 6 years 1 month 6 days 6 years 1 month 6 days