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Stock-Benefit Plans and Equity Transactions - Schedule of Assumptions used to Estimate Fair Value of Stock Options Granted and Stock Purchase Rights under ESPP (Details) - ESPP
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Risk-free interest rate, minimum 0.07% 0.04% 0.07% 0.04%
Risk-free interest rate, maximum 1.54% 0.10% 1.54% 0.10%
Expected term (years) 6 months 6 months 6 months 6 months
Volatility, minimum 50.29% 49.98% 50.29% 49.98%
Volatility, maximum 64.53% 78.51% 64.53% 78.51%