ACQUISITIONS (Details) (USD $)	0 Months Ended
	May 02, 2014	Dec. 05, 2014
Omega Refining
Business Acquisition [Line Items]
Cash and cash equivalents	$ 406,000
Accounts receivable	950,000
Inventory	4,192,000
Prepaid expenses	71,000
Property, plant and equipment	30,000,000
Deposits	400,000
Bango secured note issued by vertex	8,308,000
Technology	2,287,000
Non-compete agreements	66,000
Total identifiable net assets	46,680,000
Less liabilities assumed, including contingent consideration	(7,670,000)
Gain on purchase	(6,574,000)
Total purchase price	32,436,000
Heartland Group Holdings, LLC
Business Acquisition [Line Items]
Inventory		2,248,000
Property, plant and equipment		7,543,000
Total identifiable net assets		12,382,000
Gain on purchase		(375,000)
Total purchase price		12,007,000
Customer relationships | Heartland Group Holdings, LLC
Business Acquisition [Line Items]
Finite-lived intangible assets		352,000
Vendor relationships | Heartland Group Holdings, LLC
Business Acquisition [Line Items]
Finite-lived intangible assets		1,876,000
Tradename | Heartland Group Holdings, LLC
Business Acquisition [Line Items]
Finite-lived intangible assets		$ 363,000