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STOCK-BASED COMPENSATION (Tables)
12 Months Ended
Dec. 31, 2020
Share-based Payment Arrangement, Noncash Expense [Abstract]  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
A summary of all restricted stock activity during 2020 is as follows:
Number of
Shares
Weighted
Average
Grant Date
Fair Value
Restricted Stock Outstanding at December 31, 20191,691,699 $20.24 
Granted1,010,802 12.43 
Vested(314,048)19.60 
Forfeited(556,074)20.56 
Restricted Stock Outstanding at December 31, 20201,832,379 $16.06 
Schedule of Share-based Compensation, Stock Options, Activity
A summary of all stock option activity during 2020 is as follows:
Number of OptionsWeighted Average Exercise PriceWeighted Average Remaining Contractual LifeAggregate
Intrinsic Value
($ in millions)
Options Outstanding at December 31, 2019531,942 $11.54 3.1$1.7 
Exercised(113,312)$11.24 $0.5 
Forfeited— $— 
Expired(4,550)$13.74 
Options Outstanding at December 31, 2020414,080 $11.60 2.2$2.3 
Options Exercisable at December 31, 2020368,333 $11.67 2.3$2.0