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Selling Arrangement (Details Narrative) - Customer Contracts - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2012
Payment for arrangement to sell signs     $ 4,000,000
Term of arrangement     10 years
Amortization expense $ 600,000 $ 400,000  
2020 262,000 262,000  
2021 $ 55,000 $ 55,000