SEGMENT REPORTING (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Revenues	$ 49,119,711	$ 72,079,622	$ 86,804,050	$ 119,429,280
Income (loss) from operations	(1,718,030)	843,745	(9,126,835)	1,800,332
Operating segments | Black Oil
Segment Reporting Information [Line Items]
Revenues	34,338,534	48,878,522	59,252,510	72,449,922
Income (loss) from operations	(2,511,824)	1,116,688	(10,487,316)	1,137,078
Operating segments | Refining & Marketing
Segment Reporting Information [Line Items]
Revenues	11,447,889	18,517,819	19,714,009	38,345,278
Income (loss) from operations	703,384	768,209	840,249	1,538,784
Operating segments | Recovery
Segment Reporting Information [Line Items]
Revenues	3,333,288	4,683,281	7,837,531	8,634,080
Income (loss) from operations	$ 90,410	$ (1,041,152)	$ 520,232	$ (875,530)