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Stock-Based Compensation (Tables)
 3 Months Ended
Mar. 31, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [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

 
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