SEGMENT REPORTING (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Segment Reporting Information
Total revenues	$ 734,893	$ 1,029,369	$ 1,426,035	$ 1,103,906
Cost of revenues (exclusive of depreciation and amortization shown separately below)	729,649	1,007,143	1,349,001	1,068,133
Depreciation and amortization attributable to costs of revenues	6,630	4,063	10,967	5,090
Gross profit (loss)	(1,386)	18,163	66,067	30,683
Selling, general and administrative expenses	42,636	40,748	84,578	52,897
Depreciation and amortization attributable to operating expenses	1,028	1,127	2,044	1,536
Loss from operations	(45,050)	(23,712)	(20,555)	(23,750)
Capital expenditures	30,589	1,762	105,344	2,150
Total assets	855,200		855,200		$ 689,385
Refined products
Segment Reporting Information
Total revenues	514,055	776,127	1,015,311	840,534
Re-refined products
Segment Reporting Information
Total revenues	216,484	250,432	403,726	260,011
Services
Segment Reporting Information
Total revenues	4,354	2,810	6,998	3,361
Operating Segments | Refining & Marketing
Segment Reporting Information
Total revenues	711,419	966,390	1,370,747	1,001,109
Cost of revenues (exclusive of depreciation and amortization shown separately below)	710,958	959,684	1,300,770	992,770
Depreciation and amortization attributable to costs of revenues	5,568	3,105	8,862	3,228
Gross profit (loss)	(5,107)	3,601	61,115	5,111
Selling, general and administrative expenses	32,969	23,679	59,455	24,804
Depreciation and amortization attributable to operating expenses	822	829	1,630	934
Loss from operations	(38,898)	(20,907)	30	(20,627)
Capital expenditures	27,762	1,568	97,670	1,956
Total assets	683,661		683,661		410,975
Operating Segments | Refining & Marketing | Refined products
Segment Reporting Information
Total revenues	492,109	719,607	964,661	749,063
Operating Segments | Refining & Marketing | Re-refined products
Segment Reporting Information
Total revenues	215,508	244,476	400,352	249,739
Operating Segments | Refining & Marketing | Services
Segment Reporting Information
Total revenues	3,802	2,307	5,734	2,307
Operating Segments | Black Oil & Recovery
Segment Reporting Information
Total revenues	25,885	62,979	60,431	102,797
Cost of revenues (exclusive of depreciation and amortization shown separately below)	23,263	47,459	53,681	75,363
Depreciation and amortization attributable to costs of revenues	1,062	958	2,105	1,862
Gross profit (loss)	1,560	14,562	4,645	25,572
Selling, general and administrative expenses	4,504	4,199	9,303	8,322
Depreciation and amortization attributable to operating expenses	38	46	76	104
Loss from operations	(2,982)	10,317	(4,734)	17,146
Capital expenditures	2,827	194	7,674	194
Total assets	99,228		99,228		105,109
Operating Segments | Black Oil & Recovery | Refined products
Segment Reporting Information
Total revenues	21,797	56,520	51,220	91,471
Operating Segments | Black Oil & Recovery | Re-refined products
Segment Reporting Information
Total revenues	3,536	5,956	7,947	10,272
Operating Segments | Black Oil & Recovery | Services
Segment Reporting Information
Total revenues	552	503	1,264	1,054
Corporate and Eliminations
Segment Reporting Information
Total revenues	(2,411)	0	(5,143)	0
Cost of revenues (exclusive of depreciation and amortization shown separately below)	(4,572)	0	(5,450)	0
Depreciation and amortization attributable to costs of revenues	0	0	0	0
Gross profit (loss)	2,161	0	307	0
Selling, general and administrative expenses	5,163	12,870	15,820	19,771
Depreciation and amortization attributable to operating expenses	168	252	338	498
Loss from operations	(3,170)	(13,122)	(15,851)	(20,269)
Capital expenditures	0	0	0	0
Total assets	72,311		72,311		$ 173,301
Corporate and Eliminations | Refined products
Segment Reporting Information
Total revenues	149	0	(570)	0
Corporate and Eliminations | Re-refined products
Segment Reporting Information
Total revenues	(2,560)	0	(4,573)	0
Corporate and Eliminations | Services
Segment Reporting Information
Total revenues	$ 0	$ 0	$ 0	$ 0