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Notes Payable to Stockholders (Narrative) (Details) - USD ($)
1 Months Ended 12 Months Ended
Apr. 13, 2020
Jan. 07, 2019
May 09, 2018
Nov. 19, 2019
Mar. 25, 2019
Mar. 28, 2002
Dec. 31, 2019
Dec. 31, 2018
Nov. 18, 2020
Jan. 07, 2020
Dec. 31, 2017
Debt Instrument [Line Items]                      
Proceeds from related party loan             $ 883,000 $ 601,273      
Accrued interest             $ 303,735 329,801      
Maturity date             Dec. 31, 2019        
Interest expense             $ 367,829 324,087      
Interest expense related to capital lease obligations             39,405 3,365      
Subsequent Event [Member]                      
Debt Instrument [Line Items]                      
Interest rate on outstanding term loan                 5.00% 5.00%  
Executive Chairman [Member]                      
Debt Instrument [Line Items]                      
Proceeds from related party loan             $ 833,000 $ 325,000      
Percent in addition to BBA LIBOR             1.40%        
Due to related party             $ 9,543,132        
Executive Chairman [Member] | Unsecured Loan [Member]                      
Debt Instrument [Line Items]                      
Face amount of debt instrument         $ 8,385,132            
Maturity date         Dec. 31, 2019            
Former Board of Directors [Member] | Unsecured Loan [Member]                      
Debt Instrument [Line Items]                      
Face amount of debt instrument   $ 25,000   $ 25,000              
Interest rate on outstanding term loan   5.00%   5.00%              
Maturity date   Jan. 07, 2020   Nov. 18, 2020              
Former Board of Directors [Member] | Unsecured Loan [Member] | Subsequent Event [Member]                      
Debt Instrument [Line Items]                      
Maturity date Dec. 31, 2020                    
Note Payable to Chairman of Board [Member] | Executive Chairman [Member]                      
Debt Instrument [Line Items]                      
Face amount of debt instrument           $ 6,100,000          
Percent in addition to BBA LIBOR           1.40%          
Interest rate on outstanding term loan             4.06% 3.88%     3.62%
Maturity date     Dec. 31, 2019     Dec. 31, 2005          
Maximum amount of additional financing the company may obtain that will affect the repayment provisions of the debt instrument           $ 7,000,000          
Exchanged Amount [Member] | Executive Chairman [Member] | Unsecured Loan [Member]                      
Debt Instrument [Line Items]                      
Face amount of debt instrument         $ 7,989,622            
Accrued interest         $ 395,510            
Interest rate on outstanding term loan         4.00%            
Maturity date         Dec. 31, 2021