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Equity Compensation Plans - Non-vested Restricted Stock Activity (Details) - Restricted stock units - $ / shares
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Number of Units        
Unvested at beginning balance (in Shares)     1,643,000  
Granted (in Shares)     4,296,000  
Vested (in Shares) (46,500,000) (100,000) (631,000) (300,000)
Forfeited (in Shares)     (295,000)  
Unvested at ending balance (in Shares) 5,013,000   5,013,000  
Weighted Average Per Share Grant Date Fair Value        
Unvested at beginning balance (in Dollars per share)     $ 19.85  
Granted (in Dollars per share)     4.11  
Vested (in Dollars per share)     24.10  
Forfeited (in Dollars per share)     14.97  
Unvested at ending balance (in Dollars per share) $ 7.21   $ 7.21