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Stock-based Compensation - Summary of Option Activity Changes in Shares Available for Grant under the 2020 Plan (Details)
6 Months Ended
Jun. 30, 2021
shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Available for Grant, Beginning Balance 3,742,235
2020 Plan reserve increase on January 1, 2021 1,624,259
Options and restricted stock units granted (661,928)
Options forfeited, cancelled, or expired 2,400
Available for Grant, Ending Balance 4,706,966