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Equity Incentive Plans - Summary of Assumptions under Black-Scholes Option Pricing Model to Estimate Stock-based Compensation Expense for Stock Option Awards (Details) - Outstanding Stock Option Awards
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Expected volatility, Minimum 72.00% 77.91%
Expected volatility, Maximum 77.74% 79.18%
Expected dividend yield 0.00% 0.00%
Risk-free interest rate, Minimum 0.56% 0.37%
Risk-free interest rate, Maximum 1.34% 0.53%
Minimum [Member]    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Expected term (in years) 5 years 5 months 28 days 5 years 10 months 28 days
Maximum    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Expected term (in years) 6 years 14 days 6 years 25 days