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Stock-based Compensation - Restricted Stock Activity (Details)
3 Months Ended
Mar. 31, 2022
$ / shares
shares
Restricted stock awards and restricted stock units  
Shares  
Outstanding at beginning of period (in shares) | shares 666,298
Forfeited (in shares) | shares (11,783)
Vested (in shares) | shares (168,144)
Outstanding at end of period (in shares) | shares 486,371
Weighted Average Grant Date Fair Value per Share  
Outstanding at beginning of period (in dollars per share) $ 1.21
Forfeited (in dollars per share) 1.22
Vested (in dollars per share) 1.16
Outstanding at end of period (in dollars per share) $ 1.23
RSUs  
Shares  
Outstanding at beginning of period (in shares) | shares 11,983,032
Forfeited (in shares) | shares (326,912)
Vested (in shares) | shares (1,494,932)
Outstanding at end of period (in shares) | shares 14,590,828
Weighted Average Grant Date Fair Value per Share  
Outstanding at beginning of period (in dollars per share) $ 19.56
Granted (in dollars per share) 14.10
Forfeited (in dollars per share) 17.94
Vested (in dollars per share) 19.48
Outstanding at end of period (in dollars per share) $ 17.92