Quarterly report pursuant to Section 13 or 15(d)

EQUITY AND EARNINGS PER SHARE - Summary of Outstanding Options - Period End (Details)

v3.19.1
EQUITY AND EARNINGS PER SHARE - Summary of Outstanding Options - Period End (Details)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2019
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of unexercised options (in shares) 11,456,916
Options exercisable (in shares) 1,816,298
Issued to the independent directors  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of unexercised options (in shares) 6,000
Stock Options | Issued to the independent directors  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Date of grant Various
Number of unexercised options (in shares) 6,000
Options exercisable (in shares) 6,000
Weighted average exercise price (in dollars per share) | $ / shares $ 13.07
Intrinsic Value of Exercisable Options as of March 31, 2019 (millions) | $ $ 0.0
Stock Options | Manager | 2016  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Date of grant 2016
Number of unexercised options (in shares) 400,000
Options exercisable (in shares) 400,000
Weighted average exercise price (in dollars per share) | $ / shares $ 13.29
Intrinsic Value of Exercisable Options as of March 31, 2019 (millions) | $ $ 1.5
Stock Options | Manager | 2017  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Date of grant 2017
Number of unexercised options (in shares) 1,130,916
Options exercisable (in shares) 0
Weighted average exercise price (in dollars per share) | $ / shares $ 14.09
Intrinsic Value of Exercisable Options as of March 31, 2019 (millions) | $ $ 0.0
Stock Options | Manager | 2018  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Date of grant 2018
Number of unexercised options (in shares) 5,320,000
Options exercisable (in shares) 1,256,965
Weighted average exercise price (in dollars per share) | $ / shares $ 16.76
Intrinsic Value of Exercisable Options as of March 31, 2019 (millions) | $ $ 0.2
Stock Options | Manager | 2019  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Date of grant 2019
Number of unexercised options (in shares) 4,600,000
Options exercisable (in shares) 153,333
Weighted average exercise price (in dollars per share) | $ / shares $ 16.50
Intrinsic Value of Exercisable Options as of March 31, 2019 (millions) | $ $ 0.1
Options Granted in 2016  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of unexercised options (in shares) 400,000
Weighted average exercise price (in dollars per share) | $ / shares $ 13.70
Options Granted in 2017  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of unexercised options (in shares) 1,130,916
Weighted average exercise price (in dollars per share) | $ / shares $ 14.50
Options Granted in 2018  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of unexercised options (in shares) 1,159,833
Options Assigned  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of unexercised options (in shares) 2,690,749
Minimum | Options Granted in 2018  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Weighted average exercise price (in dollars per share) | $ / shares $ 17.10
Maximum | Options Granted in 2018  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Weighted average exercise price (in dollars per share) | $ / shares $ 18.57