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Subsequent Events (Details) - shares
1 Months Ended 12 Months Ended
Jan. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Subsequent Events      
Expiration period   10 years  
2016 Plan | Restricted stock units to purchase common stock      
Subsequent Events      
Number of options issued under the plan     92,500
Subsequent event | 2016 Plan | Restricted stock units to purchase common stock      
Subsequent Events      
Number of options issued under the plan 2,575,000    
Subsequent event | 2016 Plan | Options to purchase common stock      
Subsequent Events      
Vesting period 3 years    
Expiration period 10 years    
Subsequent event | 2016 Plan | Options to purchase common stock | Employees and Directors      
Subsequent Events      
Number of options issued under the plan 620,000