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Fixed Assets - Schedule of Property and Equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Property and equipment, gross $ 15,169 $ 14,001
Accumulated depreciation (10,502) (10,323)
Property and equipment, net 4,667 3,678
Site Equipment [Member]    
Property and equipment, gross 11,566 10,419
Machinery and Equipment [Member]    
Property and equipment, gross 1,887 2,678
Furniture and Fixtures [Member]    
Property and equipment, gross 461 279
Leasehold Improvements [Member]    
Property and equipment, gross 1,240 610
Vehicles [Member]    
Property and equipment, gross $ 15 $ 15