Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Payables and Accruals [Abstract]
Payroll and employee benefits	$ 52,458	$ 58,423
Taxes other than income taxes	97,361	104,755
Interest	127,773	119,785
Acquired sales contracts	543	3,852
Workers’ compensation	15,429	16,875
Asset retirement obligations	13,788	13,795
Other	8,905	11,965
Accrued Liabilities, Current, Not Subject To Compromise	316,257	329,450
Less: liabilities subject to compromise	(213,667)	0
Accrued Liabilities, Current	$ 102,590	$ 329,450