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INCOME TAXES (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]      
Percentage of transportation revenue from sources within the United States 50.00%    
Revenue tax rate percentage 4.00%    
Revenue tax expense $ 0 $ 0 $ 0