Basis of Presentation, Significant Accounting Policies, and Recently Issued Accounting Standards Other Comprehensive Income (Tables)

12 Months Ended

Dec. 31, 2011

Other comprehensive income [Abstract]

Schedule of Comprehensive Income (Loss) [Table Text Block]

	Change in Derivative Instrument Fair Value			Derivative Reclassification to Earnings			Pension Liability Adjustments
	(in thousands)
For the year ended December 31, 2009
Before tax income (loss)	$	(57,613	)	$	(108,071	)	$	119
Tax benefit (expense)	21,636			40,727			(45		)
Income (loss), net of tax	$	(35,977	)	$	(67,344	)	$	74
For the year ended December 31, 2010
Before tax income (loss)	$	26,904		$	10,608		$	(1,570	)
Tax benefit (expense)	(10,093		)	(3,967		)	590
Income (loss), net of tax	$	16,811		$	6,641		$	(980	)
For the year ended December 31, 2011
Before tax income (loss)	$	—		$	20,707		$	(2,779	)
Tax benefit (expense)	—			(7,710		)	984
Income (loss), net of tax	$	—		$	12,997		$	(1,795	)