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Share-Based Compensation Schedule of Restricted Stock Transactions (Details) - Restricted Share Awards [Member] - $ / shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Unvested balance at beginning of period 3,822,133    
Shares granted 2,365,262    
Shares vested (3,093,883)    
Shares forfeited (248,479)    
Unvested balance at end of period 2,845,033 3,822,133  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]      
Weighted average grant date fair value, beginning of period $ 10.76    
Weighted average grant date fair value, grants 7.72 $ 9.56 $ 13.90
Weighted average grant date fair value, vested 10.49    
Weighted average grant date fair value, forfeited 9.14    
Weighted average grant date fair value, end of period $ 8.67 $ 10.76