CONCENTRATIONS, SIGNIFICANT CUSTOMERS, COMMITMENTS AND CONTINGENCIES (Tables)

6 Months Ended

Jun. 30, 2020

Concentrations, Significant Customers, Commitments And Contingencies Disclosure [Abstract]

Schedule of concentrations

At June 30, 2020 and 2019 and for each of the six months then ended, the Company’s revenues and receivables were comprised of the following customer concentrations:

	Six Months Ended June 30, 2020		Six Months Ended June 30, 2019
	% of Revenues	% of Receivables	% of Revenues	% of Receivables
Customer 1	38%	7%	31%	20%
Customer 2	12%	16%	7%	14%
Customer 3	3%	—%	11%	8%
Customer 4	2%	2%	4%	10%
Customer 5	—%	—%	17%	—%

For each of the six months ended June 30, 2020 and 2019, the Company's segment revenues were comprised of the following customer concentrations:

	% of Revenue by Segment			% Revenue by Segment
	Six Months Ended June 30, 2020			Six Months Ended June 30, 2019
	Black Oil	Refining	Recovery	Black Oil	Refining	Recovery
Customer 1	53%	—%	—%	36%	—%	—%
Customer 2	17%	—%	—%	8%	—%	—%
Customer 3	4%	—%	—%	12%	—%	—%
Customer 4	2%	—%	—%	4%	—%	—%
Customer 5	—%	—%	—%	20%	—%	—%