NONCONTROLLING INTERESTS (Details 3) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Noncontrolling Interest
Net income attributable to noncontrolling interest	$ 33,307	$ 59,711	$ 73,711	$ 107,600
SGP
Noncontrolling Interest
Net income attributable to noncontrolling interest	12	21	26	38
Non-Affiliates (ARLP'S Non-Affiliate Limited Partners)
Noncontrolling Interest
Net income attributable to noncontrolling interest	33,302	$ 59,690	73,705	$ 107,562
Affiliate (Cavalier Minerals)
Noncontrolling Interest
Net income attributable to noncontrolling interest	$ (7)		$ (20)