CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenues:
Sales	$ 319,542	$ 445,937	$ 1,102,753	$ 1,373,344
Miscellaneous income	10,004	9,859	19,029	15,291
Total revenues	329,546	455,796	1,121,782	1,388,635
Costs and expenses:
Cost of sales (exclusive of depreciation and depletion)	297,925	395,311	991,561	1,183,861
Depreciation and depletion	58,413	82,986	204,653	232,496
Selling, general and administrative	16,598	21,873	56,379	79,676
Postretirement benefits	13,869	14,707	41,607	44,157
Restructuring and asset impairments	(2,426)	0	28,916	1,699
Total costs and expenses	384,379	514,877	1,323,116	1,541,889
Operating loss	(54,833)	(59,081)	(201,334)	(153,254)
Interest expense, net	(79,231)	(58,362)	(218,065)	(157,314)
Gain (loss) on extinguishment of debt	3,394	(874)	902	(6,875)
Other income (loss), net	1,424	593	646	(16)
Loss before income tax benefit	(129,246)	(117,724)	(417,851)	(317,459)
Income tax benefit	(30,344)	(17,000)	(75,380)	(132,799)
Net income (loss)	$ (98,902)	$ (100,724)	$ (342,471)	$ (184,660)
Net loss per share:
Basic	$ (1.48)	$ (1.61)	$ (5.27)	$ (2.95)
Diluted	$ (1.48)	$ (1.61)	$ (5.27)	$ (2.95)
Dividends per share	$ 0.01	$ 0.01	$ 0.03	$ 0.26