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CONCENTRATIONS, SIGNIFICANT CUSTOMERS, COMMITMENTS AND CONTINGENCIES - Narrative (Details)
12 Months Ended
Jul. 25, 2016
Feb. 12, 2016
lawsuit
Dec. 31, 2019
USD ($)
independent_director
Dec. 31, 2018
USD ($)
Long-term Purchase Commitment [Line Items]        
Marketing, sales, and logistical duties agreement, term of contract 5 years      
Number of independent directors in related party committee | independent_director     2  
Vertex Refining LA, LLC        
Long-term Purchase Commitment [Line Items]        
Number of lawsuits filed against subsidiary | lawsuit   5    
Law Firm Services | Related party relationship with board member        
Long-term Purchase Commitment [Line Items]        
Related party transactions | $     $ 100,683 $ 40,707