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Incentive Based Compensation (Details 1-Restricted) - $ / shares
3 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Incentive Based Compensation Plans [Abstract]    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value $ 5.82  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures 856,890  
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price $ 14.52  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 10,344,366 10,330,776
Restricted Stock    
Beginning year unvested restricted stock 7,572,845  
Granted restricted stock 4,560,821  
Vested restricted stock (2,315,776)  
Forfeited restricted stock (227,555)  
End of period unvested restricted stock 9,590,335  
Beginning year weighted average grant date fair value unvested restricted stock $ 14.24  
Granted restricted stock weighted average grant date fair value restricted stock 14.54  
Vested restricted stock weighted average grant date fair value restricted stock 13.18  
Forfeited restricted stock weighted average grant date fair value restricted stock 14.37  
End of period weighted average grant date fair value unvested restricted stock $ 14.63  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (158,890)  
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price $ 15.04  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period (684,410)  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price $ 31.14  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price $ 24.39 $ 25.52