SEGMENT INFORMATION (Details 3) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Reconciliation of consolidated Segment Adjusted EBITDA to net income
Consolidated Segment Adjusted EBITDA	[1],[2]	$ 199,807	$ 232,709	$ 408,707	$ 440,459
General and administrative		(18,040)	(20,268)	(35,303)	(38,167)
Depreciation, depletion and amortization		(79,801)	(67,052)	(158,069)	(133,893)
Interest expense, net		(7,701)	(8,331)	(15,138)	(16,005)
Income tax expense		(8)		(6)
NET INCOME		$ 94,257	$ 137,058	$ 200,191	$ 252,394

[1] Includes equity in income (loss) of affiliates for the three and six months ended June 30, 2015 of $(22.0) and $(31.4) million, respectively, included in the White Oak segment and $(0.2) million and $(0.5) million, respectively, included in the Other and Corporate segment.Includes equity in income (loss) of affiliates for the three and six months ended June 30, 2014 of $(7.5) million and $(13.8) million, respectively, included in the White Oak segment and $0.1 million, for each period, included in the Other and Corporate segment.

[2] Segment Adjusted EBITDA is defined as net income (prior to the allocation of noncontrolling interest) before net interest expense, income taxes, depreciation, depletion and amortization and general and administrative expenses. Management therefore is able to focus solely on the evaluation of segment operating profitability as it relates to the ARLP Partnership’s revenues and operating expenses, which are primarily controlled by our segments.