SEGMENT INFORMATION NARRATIVE (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
North America | Geographic Concentration Risk | Sales Revenue, Goods, Net
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage		88.00%
Commodities futures and options
Revenue, Major Customer [Line Items]
Derivative, Gain (Loss) on Derivative, Net		$ (171,753)
Operating Segments | Commodities futures and options
Revenue, Major Customer [Line Items]
Derivative, Gain (Loss) on Derivative, Net		$ (8,515)
Scenario, Forecast | Operating Segments | Commodities futures and options
Revenue, Major Customer [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ (88,300)