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Significant Customers (Tables)
3 Months Ended
Mar. 31, 2020
Risks and Uncertainties [Abstract]  
Summary of Revenue Percentage Accounted by Purchasers
For the three months ended March 31, 2020 and 2019, the following customers accounted for more than 10% of the Company’s revenue:
Three Months Ended March 31,
20202019
Shell Trading (US) Company40%54%
Lion Oil Trading and Transportation31%28%
Trafigura Trading LLC17%1%
Targa Pipeline Mid-Continent, LLC5%11%