LONG-TERM DEBT (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Long-Term Debt
Long-term debt including current and non-current	$ 856,750	$ 821,250
Less current maturities	(68,750)	(230,000)
Total long-term debt	788,000	591,250
ARLP Revolving credit facility
Long-Term Debt
Long-term debt including current and non-current	393,000	140,000
ARLP Series A Senior Notes
Long-Term Debt
Long-term debt including current and non-current		205,000
ARLP Series B Senior Notes
Long-Term Debt
Long-term debt including current and non-current	145,000	145,000
ARLP Term Loan
Long-Term Debt
Long-term debt including current and non-current	218,750	231,250
ARLP Securitization facility
Long-Term Debt
Long-term debt including current and non-current	$ 100,000	$ 100,000

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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