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Related Party Transactions (Details) - USD ($)
3 Months Ended 9 Months Ended
Mar. 31, 2015
Sep. 30, 2019
Sep. 30, 2018
Mar. 31, 2015
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Apr. 18, 2017
Related party transactions compensation [Abstract]                
Accrued interest payable   $ 984,000     $ 984,000      
Emmett J. Wood [Member]                
Related party transactions compensation [Abstract]                
Compensation to related parties   $ 110,000 $ 106,000   $ 344,000 $ 392,000    
Emmett J. Wood [Member] | Class A Common Stock [Member]                
Related party transactions compensation [Abstract]                
Number of shares held by related party (in shares)   810,000     810,000   810,000  
Emmett J. Wood [Member] | Class B Common Stock [Member]                
Related party transactions compensation [Abstract]                
Number of shares held by related party (in shares)   50,000     50,000   50,000  
Porter [Member]                
Related party transactions compensation [Abstract]                
Proceeds from related party, debt       $ 2,500,000        
Debt instrument, fixed interest rate 12.00%     12.00%       6.00%
Debt instrument, first interest payment due date         Aug. 20, 2015      
Debt instrument, last principal and interest payment date Jul. 01, 2017       Jul. 25, 2022      
Interest expense, related party   $ 83,000 $ 78,000   $ 245,000 $ 229,000    
Porter [Member] | Class A Common Stock [Member]                
Related party transactions compensation [Abstract]                
Percentage of shares owned 35.00%     35.00%