BUSINESS SEGMENTS Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Crude oil and natural gas segment
Depreciation, depletion and amortization from continuing operations	$ 96,385	$ 80,947	$ 70,106	$ 55,820	$ 50,363	$ 49,640	$ 49,636	$ 42,889	$ 303,258	$ 192,528	$ 115,624
Oil and Gas Properties
Crude oil and natural gas segment
Depreciation, depletion and amortization from continuing operations									$ 298,800	$ 188,500	$ 111,600