Income Taxes (Narrative) (Details) € in Thousands, $ in Thousands		1 Months Ended		3 Months Ended		12 Months Ended
	Dec. 28, 2012 EUR (€)	Dec. 31, 2013 EUR (€)	Jan. 31, 2012 EUR (€)	Jun. 28, 2014 EUR (€)	Sep. 29, 2012 EUR (€)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Income Taxes [Line Items]
Percentage of earnings from continuing operations before income taxes attributable to the United States						51.00%
Reversal of uncertain tax positions						$ 6,294	$ 13,471
Valuation allowance against deferred tax asset						289,078	287,580
Increase (decrease) in the valuation allowance						1,498	(12,892)
Net operating loss carryforwards and tax credit						456,130	458,743
Net operating loss carryforwards in various foreign jurisdictions						402,255
Federal income taxes on earnings						1,400,000
Gross unrecognized tax benefits						46,434	51,037	$ 49,599
Unrecognized tax benefits that would impact effective tax rate						28,489
Interest and penalties						8,020	5,394
Accrued/(reversed) interest and penalties						(2,170)	$ 5,635		$ 3,579
Expected decrease in unrecognized tax benefits within next twelve months						$ 10,336
Domestic tax authority
Income Taxes [Line Items]
Effective income tax rate						38.50%	39.80%	42.80%
State
Income Taxes [Line Items]
Net operating loss carryforwards and tax credit						$ 53,874
Foreign tax authority
Income Taxes [Line Items]
Effective income tax rate						10.80%	0.70%	(3.10%)
Foreign tax authority | Belgium
Income Taxes [Line Items]
Interest income related to interest tax examination refund | €					€ 1,583
Foreign tax authority | Tax year 2008 | Belgium
Income Taxes [Line Items]
Foreign tax assessment | €			€ 23,789	€ 30,131
Foreign tax authority | Tax year 2005 | Belgium
Income Taxes [Line Items]
Foreign tax assessment | €	€ 46,135
Foreign tax authority | Tax year 2009 | Belgium
Income Taxes [Line Items]
Foreign tax assessment | €	€ 35,567
Foreign tax authority | Tax year 2006 | Belgium
Income Taxes [Line Items]
Foreign tax assessment | €		€ 38,817
Foreign tax authority | Tax year 2007 | Belgium
Income Taxes [Line Items]
Foreign tax assessment | €		39,635
Foreign tax authority | Tax year 2010 | Belgium
Income Taxes [Line Items]
Foreign tax assessment | €		€ 43,117
Foreign subsidiary and state net operating losses and tax credits
Income Taxes [Line Items]
Increase (decrease) in the valuation allowance						$ (9,364)	$ (24,718)
State deferred tax assets
Income Taxes [Line Items]
Valuation allowance against deferred tax asset						26,992
Operating loss carryforward, foreign jurisdiction
Income Taxes [Line Items]
Valuation allowance against deferred tax asset						249,529
IVC group
Income Taxes [Line Items]
Reversal of uncertain tax positions						$ 5,371	$ 11,180