Annual report pursuant to Section 13 and 15(d)

SHARE-BASED COMPENSATION - Restricted Stock, RSUs, Performance Shares (Details)

v3.10.0.1
SHARE-BASED COMPENSATION - Restricted Stock, RSUs, Performance Shares (Details) - $ / shares
shares in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Weighted-Average Grant Date Fair Value Per Share (USD per share):      
Granted (in USD per share) $ 14.98 $ 11.13 $ 9.59
Restricted Stock Awards      
Shares:      
Nonvested at beginning of period (in shares) 448    
Granted (in shares) 0    
Vested (in shares) (227)    
Forfeited (in shares) (20)    
Nonvested at end of period (in shares) 201 448  
Weighted-Average Grant Date Fair Value Per Share (USD per share):      
Nonvested at beginning of period (in USD per share) $ 9.68    
Granted (in USD per share) 0.00    
Vested (in USD per share) 9.68    
Forfeited (in USD per share) 9.68    
Nonvested at end of period (in USD per share) $ 9.68 $ 9.68  
Restricted Stock Units      
Shares:      
Nonvested at beginning of period (in shares) 16,159    
Granted (in shares) 4,743    
Vested (in shares) (4,948)    
Forfeited (in shares) (474)    
Nonvested at end of period (in shares) 15,480 16,159  
Weighted-Average Grant Date Fair Value Per Share (USD per share):      
Nonvested at beginning of period (in USD per share) $ 11.26    
Granted (in USD per share) 15.01    
Vested (in USD per share) 10.56    
Forfeited (in USD per share) 12.32    
Nonvested at end of period (in USD per share) $ 12.51 $ 11.26  
Performance Share Units      
Shares:      
Nonvested at beginning of period (in shares) 3,018    
Granted (in shares) 691    
Vested (in shares) (719)    
Forfeited (in shares) (32)    
Nonvested at end of period (in shares) 2,958 3,018  
Weighted-Average Grant Date Fair Value Per Share (USD per share):      
Nonvested at beginning of period (in USD per share) $ 10.67    
Granted (in USD per share) 14.81    
Vested (in USD per share) 10.89    
Forfeited (in USD per share) 12.27    
Nonvested at end of period (in USD per share) $ 11.75 $ 10.67