CONCENTRATIONS, SIGNIFICANT CUSTOMERS, COMMITMENTS AND CONTINGENCIES (Details) - Customer concentration risk	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenues | Customer 1
Revenue, Major Customer [Line Items]
Concentration percentage	15.00%	2.00%
Revenues | Customer 2
Revenue, Major Customer [Line Items]
Concentration percentage	12.00%	14.00%
Revenues | Customer 3
Revenue, Major Customer [Line Items]
Concentration percentage	11.00%	7.00%
Revenues | Customer 4
Revenue, Major Customer [Line Items]
Concentration percentage	11.00%	0.00%
Revenues | Customer 5
Revenue, Major Customer [Line Items]
Concentration percentage	1.00%	26.00%
Revenues | Customer 6
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Receivables | Customer 1
Revenue, Major Customer [Line Items]
Concentration percentage	13.00%	6.00%
Receivables | Customer 2
Revenue, Major Customer [Line Items]
Concentration percentage	1.00%	13.00%
Receivables | Customer 3
Revenue, Major Customer [Line Items]
Concentration percentage	8.00%	8.00%
Receivables | Customer 4
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Receivables | Customer 5
Revenue, Major Customer [Line Items]
Concentration percentage	7.00%	25.00%
Receivables | Customer 6
Revenue, Major Customer [Line Items]
Concentration percentage	20.00%	0.00%
Black Oil | Revenues | Customer 1
Revenue, Major Customer [Line Items]
Concentration percentage	100.00%	100.00%
Black Oil | Revenues | Customer 2
Revenue, Major Customer [Line Items]
Concentration percentage	100.00%	40.00%
Black Oil | Revenues | Customer 3
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Black Oil | Revenues | Customer 4
Revenue, Major Customer [Line Items]
Concentration percentage	100.00%	0.00%
Black Oil | Revenues | Customer 5
Revenue, Major Customer [Line Items]
Concentration percentage	100.00%	100.00%
Black Oil | Revenues | Customer 6
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Refining | Revenues | Customer 1
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Refining | Revenues | Customer 2
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	60.00%
Refining | Revenues | Customer 3
Revenue, Major Customer [Line Items]
Concentration percentage	100.00%	100.00%
Refining | Revenues | Customer 4
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Refining | Revenues | Customer 5
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Refining | Revenues | Customer 6
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Recovery | Revenues | Customer 1
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Recovery | Revenues | Customer 2
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Recovery | Revenues | Customer 3
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Recovery | Revenues | Customer 4
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Recovery | Revenues | Customer 5
Revenue, Major Customer [Line Items]
Concentration percentage	0.00%	0.00%
Recovery | Revenues | Customer 6
Revenue, Major Customer [Line Items]
Concentration percentage	100.00%	0.00%