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Selling Arrangement (Details Narrative) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]          
Payments for arrangements to sell signs         $ 4,000,000
Term of arrangement         10 years
Customer Contracts [Member]          
Finite-Lived Intangible Assets [Line Items]          
Amortization expense $ 100,000 $ 100,000 $ 200,000 $ 200,000  
2018 400,000   400,000    
2019 400,000   400,000    
2020 400,000   400,000    
2021 $ 117,000   $ 117,000