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Selling Arrangement (Details Narrative) - Customer Contracts [Member] - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2011
Payment for arrangement to sell signs     $ 4,000,000
Term of arrangement     10 years
Amortization expense $ 400,000 $ 400,000  
2018 400,000    
2019 400,000    
2020 400,000    
2021 $ 117,000