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Stock-Based Compensation (Tables)
 3 Months Ended
Mar. 31, 2022
Share-based Payment Arrangement [Abstract]  
Summary of Grants Awarded The following table summarizes the grants awarded during the three months ended March 31, 2022:
Grant dateRestricted
stock		Grant date fair
value of
restricted stock		Performance
shares		Grant date fair
value of
performance
shares
February 22, 20221,700,619 $4.21 1,067,118 $4.38 
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity
The following table summarizes restricted stock activity for the years ended March 31, 2022, 2021, and 2020:
 Restricted Stock
Number of
Shares		Weighted
Average
Grant Date
Fair Value
Outstanding at December 31, 20181,541,648 $7.14 
Granted1,586,590 4.90 
Vested(797,025)6.36 
Canceled/Forfeited(146,538)5.70 
Outstanding at December 31, 20192,184,675 $5.89 
Granted1,676,634 5.13 
Vested(928,778)6.46 
Canceled/Forfeited(207,807)5.36 
Outstanding at December 31, 20202,724,724 $5.26 
Granted932,442 8.88 
Vested(1,179,857)5.53 
Canceled/Forfeited(332,505)5.83 
Outstanding at December 31, 20212,144,804 $6.60