CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenues:
Sales	$ 377,982	$ 437,798	$ 783,211	$ 927,407
Miscellaneous income	369	3,698	9,025	5,432
Total revenues	378,351	441,496	792,236	932,839
Costs and expenses:
Cost of sales (exclusive of depreciation and depletion)	343,761	367,616	693,636	788,550
Depreciation and depletion	69,816	68,320	146,240	149,510
Selling, general and administrative	19,002	27,129	39,781	57,803
Postretirement benefits	13,869	14,725	27,738	29,450
Restructuring and asset impairments	31,342	(5,741)	31,342	1,699
Total costs and expenses	477,790	472,049	938,737	1,027,012
Operating loss	(99,439)	(30,553)	(146,501)	(94,173)
Interest expense, net	(73,402)	(52,985)	(138,834)	(98,952)
Gain (loss) on extinguishment of debt	11,397		(2,492)	(6,001)
Other income (loss), net	978	(714)	(778)	(609)
Loss before income tax benefit	(160,466)	(84,252)	(288,605)	(199,735)
Income tax benefit	(9,075)	(49,760)	(45,036)	(115,799)
Net loss	$ (151,391)	$ (34,492)	$ (243,569)	$ (83,936)
Net loss per share:
Basic (in dollars per share)	$ (2.33)	$ (0.55)	$ (3.81)	$ (1.34)
Diluted (in dollars per share)	$ (2.33)	$ (0.55)	$ (3.81)	$ (1.34)
Dividends per share (in dollars per share)	$ 0.01	$ 0.125	$ 0.02	$ 0.25