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Equity - Preferred Stock Classes (Details) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Nov. 30, 2016
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Dec. 31, 2016
Class of Stock              
Preferred Stock, Shares Authorized   50,000,000   50,000,000   50,000,000  
Preferred stock dividend declared   $ 3,906 $ 3,906 $ 11,718 $ 11,718    
Preferred Stock, Par or Stated Value Per Share   $ 0.01   $ 0.01   $ 0.01  
Preferred Stock, Shares Issued   0   0   0  
Preferred Stock, Value, Issued   $ 0   $ 0   $ 0  
Preferred Stock, Value, Outstanding   $ 0   $ 0   $ 0  
Cumulative Preferred Stock              
Class of Stock              
Preferred Stock, Shares Authorized 125 125   125   125  
Preferred Stock, Dividend Rate, Percentage 12.50%     12.50%   12.50% 12.50%
Preferred Stock Shares Sold             125
Preferred Stock Value Sold             $ 125,000
Preferred Stock, Liquidation Preference Per Share $ 1,000            
Preferred Stock, Shares Issued   125   125   125  
Preferred Stock, Value, Issued   $ 125,000   $ 125,000   $ 125,000  
Preferred Stock, Shares Outstanding   125   125   125  
Preferred Stock, Dividend Payment Terms These dividends are cumulative and payable semi-annually in arrears on June 30 and December 31 of each year            
Preferred Stock, Redemption Price Per Share $ 1,000            
Preferred Stock Redemption Premium Per Share $ 50