Quarterly Financial Information Quarterly Financial Information (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Financial Information [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

Quarterly financial data for the years ended December 31, 2012 and 2011 is summarized below:

	March 31		June 30			September 30			December 31
			(a)(b)			(a)			(b)
	(In thousands, except per share data)
2012:
Revenues	$	1,039,651	$	1,063,538		$	1,087,618		$	968,231
Gross profit	63,704		54,984			69,249			37,176
Mine closure and asset impairment costs	—		525,762			(2,194		)	—
Goodwill and other intangible asset impairment	—		115,791			—			230,632
Income from operations	54,081		(588,984		)	135,960			(282,645		)
Net income (loss)	1,409		(435,424		)	45,751			(295,423		)
Basic earnings (loss) per common share	$	0.01	$	(2.05	)	$	0.22		$	(1.39	)
Diluted earnings (loss) per common share	$	0.01	$	(2.05	)	$	0.22		$	(1.39	)

	March 31		June 30		September 30		December 31
			(c)		(c)		(c)
	(In thousands, except per share data)
2011:
Revenues	$	872,938	$	985,528	$	1,198,673	$	1,228,756
Gross profit	130,523		172,234		120,085		154,388
Income from operations	102,238		95,354		76,256		139,728
Net income	55,874		6,630		9,121		71,215
Basic earnings per common share	$	0.34	$	0.04	$	0.04	$	0.34
Diluted earnings per common share	$	0.34	$	0.04	$	0.04	$	0.33