Income Taxes (Narrative) (Details)	12 Months Ended						12 Months Ended				0 Months Ended		12 Months Ended
	Dec. 31, 2012 EUR (€)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2012 Undistributed Foreign Earnings [Member] USD ($)	Dec. 31, 2012 State [Member] USD ($)	Dec. 31, 2012 Foreign Subsidiary and State Net Operating Losses and Tax Credits [Member] USD ($)	Dec. 31, 2012 State Deferred Tax Assets [Member] USD ($)	Dec. 31, 2012 Operating Loss Carryforward, Foreign Jurisdiction [Member] USD ($)	Dec. 31, 2008 2008 Assessment[Member] EUR (€)	Dec. 28, 2012 2005 Assessment [Member] EUR (€)	Dec. 28, 2012 2009 Assessment [Member] EUR (€)	Dec. 31, 2012 BELGIUM Foreign Tax Authority [Member] EUR (€)
Income Taxes [Line Items]
Valuation allowance against deferred tax asset		$ (334,215,000)	$ (325,127,000)	$ (321,585,000)
Change in the valuation allowance		(9,088,000)	(40,817,000)				12,630,000	(39,461,000)	(170,394,000)
Foreign currency translation		7,040,000	22,046,000	5,863,000
Net operating loss carryforwards and tax credit		273,509,000		247,786,000		49,081,000
Net operating loss carryforwards in various foreign jurisdictions				198,705,000
Federal income taxes on earnings					786,000,000
Foreign tax assessment										23,789,000	46,135,000	35,567,000
Interest on assessment	2,912,000
Interest income on tax assessment													1,583,000
Gross unrecognized tax benefits		46,087,000	49,943,000	53,835,000
Unrecognized tax benefits that would impact effective tax rate				36,902,000
Interest and penalties		7,998,000		5,874,000
Accrued/(reversed) interest and penalties		3,755,000	9,852,000	1,585,000
Amount that unrecognized tax benefits could decrease by in the next 12 month				$ 7,499,000