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Certain Relationships and Related Transactions (Details) - USD ($)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Related Party Transaction [Line Items]      
Common stock held by related parties 39.30% 39.30%  
Proceeds from related party, debt   $ 2,500,000  
Interest expense, related party $ 300,000 $ 229,000  
Debt instrument, fixed interest rate   12.00%  
Debt instrument, last principal and interest payment date   Jul. 01, 2017  
Debt instrument, first interest payment date   Aug. 20, 2015  
Emmett Wood [Member]      
Related Party Transaction [Line Items]      
Compensation to related parties $ 401,000 $ 305,000 $ 446,000
Emmett Wood [Member] | Class A Common Stock [Member]      
Related Party Transaction [Line Items]      
Number of shares held by related party (in shares) 650,000 650,000  
Emmett Wood [Member] | Class B Common Stock [Member]      
Related Party Transaction [Line Items]      
Number of shares held by related party (in shares) 50,000 50,000