SUBSEQUENT EVENTS (Details 1) (USD $)	12 Months Ended	1 Months Ended	0 Months Ended
	Dec. 31, 2014	Feb. 28, 2015	Dec. 05, 2014	Feb. 03, 2015	May 02, 2014	Jan. 14, 2015	Jan. 31, 2015	Jan. 07, 2015
Series A Preferred Stock
Subsequent Event [Line Items]
Preferred stock converted to common stock, shares	688,583
Series A Preferred Stock | Subsequent event
Subsequent Event [Line Items]
Preferred stock converted to common stock, shares		17,476
Common stock
Subsequent Event [Line Items]
New shares as a result of stock conversion, in shares	688,583
Common stock | Subsequent event
Subsequent Event [Line Items]
New shares as a result of stock conversion, in shares		17,476
Heartland Group Holdings, LLC
Subsequent Event [Line Items]
Number of consecutive trading days used to compute weighted-average closing price per share			10 days
Closing volume weighted-average price (in dollars per share)			$ 3.56
Post-closing inventory adjustment period			60 days
Heartland Group Holdings, LLC | Subsequent event
Subsequent Event [Line Items]
Number of consecutive trading days used to compute weighted-average closing price per share				10 days
Closing volume weighted-average price (in dollars per share)				$ 3.56
Contingent consideration payment due from inventory true-up				$ 200,000
Number of shares owed to acquiree as part of inventory true-up				56,180
Post-closing inventory adjustment period				60 days
Vertex Refining NV, LLC | Omega Refining and Bango Refining | Omega Secured Note
Subsequent Event [Line Items]
Promissory note receivable					13,858,067
Vertex Refining NV, LLC | Omega Refining and Bango Refining | Omega Secured Note | Subsequent event
Subsequent Event [Line Items]
Increase in principal amount of note receivable						500,000
Reduction in motor oil inventory deferral						500,000
Vertex Refining NV, LLC | Omega Refining and Bango Refining | Omega Secured Note | Maximum | Subsequent event
Subsequent Event [Line Items]
Promissory note receivable								14,358,067
Increase in principal amount of note receivable							$ 500,000