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Long-term Debt - Components of the 12% Amended Senior Secured Notes and Carrying Values (Details) (Parenthetical) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Unused commitment percentage 2.00%  
Series J Preferred Stock [Member] | Delayed Draw Term Note [Member]    
Principal payment interest $ 71,495 $ 71,495
12% Amended Senior Secured Notes [Member] | Series K Preferred Stock [Member]    
Principal payment interest $ 146,067 $ 146,067