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401(k) Savings Plan (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
401(k) Savings Plan [Abstract]        
Percentage of matching employee contributions     4.00%  
Matching employee contributions $ 0.1 $ 0.1 $ 0.3 $ 0.2