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Stock-Based Compensation (Tables)
 3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Share-based Payment Arrangement [Abstract]    
Summary of Activity for Restricted Stock Awards
The following table provides a summary of activity with regard to restricted stock awards in the three months ended March 31, 2021:
 
    
Number of
Shares
     
Weighted Average
Grant Date
Fair Value
  
Unvested at beginning of year
      6,228,048      $ 12.43  
Granted
      3,029,949        11.15  
Vested
      (1,918,654 )       13.21  
Canceled
      (59,260 )       11.65  
  
 
 
     
Unvested at end of period
      7,280,083        11.70  
  
 
 
     
The following table provides a summary of activity with regard to restricted stock awards in the year ended December 31, 2020:
 
     For the Year Ended
December 31, 2020		  
     Number of
Shares		     Weighted
Average
Grant Date
Fair Value		  
Unvested at beginning of year
      6,516,101     $ 13.31  
Granted
      2,421,345       11.61  
Vested
      (2,180,891 )      14.06  
Canceled
      (528,507 )      12.88  
  
 
 
    
Unvested at end of year
      6,228,048       12.43  
  
 
 
    
Summary of Activity for Performance-Based Restricted Stock Units
The following table provides a summary of activity with regard to Performance-Based Restricted Stock Units (“PSUs”) in the three months ended March 31, 2021:
 
   
Number of
Shares
    
Performance
Period
    
Expected
Vesting
Date
  
Outstanding at beginning of year
     477,872      
Granted
     307,479      
January 1, 2021 - December 31, 2023
       March 31, 2024  
 
 
 
      
Outstanding at end of period
     785,351