CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues:
Sales	$ 445,937	$ 612,510	$ 1,373,344	$ 1,908,413
Miscellaneous income (loss)	9,859	(536)	15,291	12,698
Total revenues	455,796	611,974	1,388,635	1,921,111
Costs and expenses:
Cost of sales (exclusive of depreciation and depletion)	395,311	448,765	1,183,861	1,366,383
Depreciation and depletion	82,986	82,560	232,496	223,512
Selling, general and administrative	21,873	32,486	79,676	104,578
Postretirement benefits	14,707	13,213	44,157	39,639
Restructuring and asset impairment		1,106,715	1,699	1,106,715
Total costs and expenses	514,877	1,683,739	1,541,889	2,840,827
Operating loss	(59,081)	(1,071,765)	(153,254)	(919,716)
Interest expense	(63,544)	(30,545)	(169,291)	(89,716)
Interest income	15	113	809	731
Other income (loss), net	4,886	(943)	4,277	(13,855)
Loss from continuing operations before income tax benefit	(117,724)	(1,103,140)	(317,459)	(1,022,556)
Income tax benefit	(17,000)	(41,184)	(132,799)	(27,972)
Loss from continuing operations	(100,724)	(1,061,956)	(184,660)	(994,584)
Income from discontinued operations				5,180
Net loss	$ (100,724)	$ (1,061,956)	$ (184,660)	$ (989,404)
Basic income (loss) per share:
Loss from continuing operations (in dollars per share)	$ (1.61)	$ (16.97)	$ (2.95)	$ (15.91)
Income from discontinued operations (in dollars per share)				$ 0.09
Net loss per share (in dollars per share)	$ (1.61)	$ (16.97)	$ (2.95)	$ (15.82)
Diluted income (loss) per share:
Loss from continuing operations (in dollars per share)	$ (1.61)	$ (16.97)	$ (2.95)	$ (15.91)
Income from discontinued operations (in dollars per share)				$ 0.09
Net loss per share (in dollars per share)	$ (1.61)	$ (16.97)	$ (2.95)	$ (15.82)
Dividends per share (in dollars per share)	$ 0.01	$ 0.125	$ 0.26	$ 0.375