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Stock-Based Compensation and Other Benefit Plans - Restricted Stock Activity (Details) - Performance-based Restricted Stock Units [Member] - $ / shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Shares    
Outstanding at beginning of period (in shares) 230,790  
Granted (in shares) 0 0
Vested (in shares) (230,790)  
Forfeited (in shares) 0  
Outstanding at the end of period (in shares) 0 230,790
Weighted-Average Grant Date Fair Value    
Outstanding at beginning of period (in dollars per share) $ 5.18  
Granted (in dollars per share) 0  
Vested (in dollars per share) 5.18  
Forfeited (in dollars per share) 0  
Outstanding at the end of period (in dollars per share) $ 0 $ 5.18