REVENUES (Tables)

3 Months Ended

Mar. 31, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table presents our revenues disaggregated by revenue source:

	Three Months Ended March 31, 2019
	Black Oil		Refining & Marketing		Recovery		Total
Primary Geographical Markets
Northern United States	$	9,323,782	$	—	$	—	$	9,323,782
Southern United States	23,491,405		2,858,621		3,646,904		29,996,930
	$	32,815,187	$	2,858,621	$	3,646,904	$	39,320,712
Sources of Revenue
Petroleum products	$	32,815,187	$	2,858,621	$	1,211,515	$	36,885,323
Metals	—		—		2,435,389		2,435,389
Total revenues	$	32,815,187	$	2,858,621	$	3,646,904	$	39,320,712

	Three Months Ended March 31, 2018
	Black Oil		Refining & Marketing		Recovery		Total
Primary Geographical Markets
Northern United States	$	8,837,230	$	—	$	—	$	8,837,230
Southern United States	23,400,016		5,675,241		3,455,708		32,530,965
	$	32,237,246	$	5,675,241	$	3,455,708	$	41,368,195
Sources of Revenue
Petroleum products	$	32,237,246	$	5,675,241	$	377,142	$	38,289,629
Metals	—		—		3,078,566		3,078,566
Total revenues	$	32,237,246	$	5,675,241	$	3,455,708	$	41,368,195