CONCENTRATIONS, SIGNIFICANT CUSTOMERS, COMMITMENTS AND CONTINGENCIES - Customer Concentrations (Details)	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Customer concentration risk | Revenues | Customer 1
Revenue, Major Customer
Concentration percentage (as a percent)	42.00%	21.00%
Customer concentration risk | Revenues | Customer 1 | Black Oil
Revenue, Major Customer
Concentration percentage (as a percent)	0.00%	0.00%
Customer concentration risk | Revenues | Customer 1 | Refining
Revenue, Major Customer
Concentration percentage (as a percent)	43.00%	27.00%
Customer concentration risk | Revenues | Customer 1 | Recovery
Revenue, Major Customer
Concentration percentage (as a percent)	0.00%	0.00%
Customer concentration risk | Revenues | Customer 2
Revenue, Major Customer
Concentration percentage (as a percent)	17.00%	17.00%
Customer concentration risk | Revenues | Customer 2 | Black Oil
Revenue, Major Customer
Concentration percentage (as a percent)	0.00%	0.00%
Customer concentration risk | Revenues | Customer 2 | Refining
Revenue, Major Customer
Concentration percentage (as a percent)	18.00%	0.00%
Customer concentration risk | Revenues | Customer 2 | Recovery
Revenue, Major Customer
Concentration percentage (as a percent)	0.00%	78.00%
Customer concentration risk | Revenues | Customer 3
Revenue, Major Customer
Concentration percentage (as a percent)	9.00%	16.00%
Customer concentration risk | Revenues | Customer 3 | Black Oil
Revenue, Major Customer
Concentration percentage (as a percent)	0.00%	0.00%
Customer concentration risk | Revenues | Customer 3 | Refining
Revenue, Major Customer
Concentration percentage (as a percent)	9.00%	20.00%
Customer concentration risk | Revenues | Customer 3 | Recovery
Revenue, Major Customer
Concentration percentage (as a percent)	0.00%	0.00%
Customer concentration risk | Receivables | Customer 1
Revenue, Major Customer
Concentration percentage (as a percent)	1.00%	14.00%
Customer concentration risk | Receivables | Customer 2
Revenue, Major Customer
Concentration percentage (as a percent)	18.00%	20.00%
Customer concentration risk | Receivables | Customer 3
Revenue, Major Customer
Concentration percentage (as a percent)	0.00%	10.00%
Vendor Concentration Risk | Purchases Benchmark | Vendor One
Revenue, Major Customer
Concentration percentage (as a percent)	70.00%	59.00%
Vendor Concentration Risk | Accounts Payable Benchmark | Vendor One
Revenue, Major Customer
Concentration percentage (as a percent)	73.00%	69.00%