Valuation and Qualifying Accounts Valuation and Qualifying Accounts (Tables)

12 Months Ended

Dec. 31, 2013

Valuation and Qualifying Accounts [Abstract]

Summary of Valuation Allowance [Table Text Block]

Description	Balance at Beginning of Period		Other Adjustments			Additions Charged to Costs and Expenses		Balance at End of Period, Noncurrent
	(in thousands)
Year ended December 31, 2013:
Deferred tax assets valuation allowance	$	138,910	$	4,117		$	17,999	$	161,026
Year ended December 31, 2012:
Deferred tax assets valuation allowance	$	124,244	$	1,811		$	12,855	$	138,910
Year ended December 31, 2011:
Deferred tax assets valuation allowance	$	115,138	$	(4,701	)	$	13,807	$	124,244