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Certain Relationships and Related Transactions (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Mar. 31, 2018
Apr. 18, 2017
Related party transactions compensation [Abstract]          
Gain on extinguishment of debt $ 0 $ 0 $ 1,031,000    
Interest expense, related party     292,000    
Debt instrument, fixed interest rate   12.00%      
Emmett Wood [Member]          
Related party transactions compensation [Abstract]          
Compensation to related parties $ 529,000 $ 552,000 $ 570,000    
Emmett Wood [Member] | Class A Common Stock [Member]          
Related party transactions compensation [Abstract]          
Number of shares held by related party (in shares) 810,000     39,680  
Emmett Wood [Member] | Class B Common Stock [Member]          
Related party transactions compensation [Abstract]          
Number of shares held by related party (in shares) 50,000        
Porter [Member]          
Related party transactions compensation [Abstract]          
Common stock held by related parties 35.00%        
Accrued interest payable $ 1,100,000        
Gain on extinguishment of debt 1,000,000        
Proceeds from related party, debt 2,500,000        
Interest expense, related party $ 330,000 $ 308,000      
Debt instrument, fixed interest rate 6.00%        
Debt instrument, last principal and interest payment date Jul. 25, 2022 Jul. 01, 2017      
Debt instrument, first interest payment due date Aug. 20, 2015        
Porter [Member] | Series A-1 Redeemable Preferred Stock [Member]          
Related party transactions compensation [Abstract]          
Number of senior redeemable preferred stock redeemed by the Company (in shares)         163
Porter [Member] | Series A-2 Redeemable Preferred Stock [Member]          
Related party transactions compensation [Abstract]          
Number of senior redeemable preferred stock redeemed by the Company (in shares)         228