CONCENTRATIONS, SIGNIFICANT CUSTOMERS, COMMITMENTS AND CONTINGENCIES (Details) - Customer concentration risk	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Revenues | Customer 1
Revenue, Major Customer [Line Items]
Concentration percentage	43.00%	6.00%
Revenues | Customer 1 | Black Oil
Revenue, Major Customer [Line Items]
Concentration percentage	100.00%	100.00%
Revenues | Customer 1 | Refining
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Revenues | Customer 1 | Recovery
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Revenues | Customer 2
Revenue, Major Customer [Line Items]
Concentration percentage	7.00%	11.00%
Revenues | Customer 2 | Black Oil
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Revenues | Customer 2 | Refining
Revenue, Major Customer [Line Items]
Concentration percentage	100.00%	100.00%
Revenues | Customer 2 | Recovery
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Revenues | Customer 3
Revenue, Major Customer [Line Items]
Concentration percentage	9.00%	13.00%
Revenues | Customer 3 | Black Oil
Revenue, Major Customer [Line Items]
Concentration percentage	100.00%	100.00%
Revenues | Customer 3 | Refining
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Revenues | Customer 3 | Recovery
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Revenues | Customer 4
Revenue, Major Customer [Line Items]
Concentration percentage	4.00%	19.00%
Revenues | Customer 4 | Black Oil
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	100.00%
Revenues | Customer 4 | Refining
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Revenues | Customer 4 | Recovery
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Revenues | Customer 5
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	7.00%
Revenues | Customer 5 | Black Oil
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	100.00%
Revenues | Customer 5 | Refining
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Revenues | Customer 5 | Recovery
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Receivables | Customer 1
Revenue, Major Customer [Line Items]
Concentration percentage	18.00%	0.00%
Receivables | Customer 2
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	5.00%
Receivables | Customer 3
Revenue, Major Customer [Line Items]
Concentration percentage	3.00%	11.00%
Receivables | Customer 4
Revenue, Major Customer [Line Items]
Concentration percentage	1.00%	0.00%
Receivables | Customer 5
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	21.00%