Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012	Dec. 29, 2012
Income Tax Disclosures [Line Items]
Liability for Uncertain Tax Positions, Current	$ 2,408		$ 2,408
Transaction Costs Not Deductible			525
Increase (decrease) in unrecognized tax benefits	13,325
Unrecognized tax benefits	18,782		18,782
Increase in unrecognized tax benefits, that if recognized would impact the effective tax rate	(8,628)
Unrecognized tax benefits that would impact effective tax rate favorably, if recognized	17,268		17,268
Interest related to unrecognized income tax benefits	637		637
Change in accrued interest related to unrecognized income tax benefits	(1,788)
US Tax Asset Correlative Relief	975		975		2,981
Change in US Tax Asset Correlative Relief	2,006
Income tax expense related to items of other comprehensive income	(326)	156	874	701
Income tax expense (beneffit) related to foreign currency translation adjustments	(615)	(60)	42	(98)
Income tax expense related to the change in unrecognized pension gains, losses and prior service costs	289	216	832	799
Income (loss) from continuing operations before income taxes
Income from continuing operations, before income taxes	42,726	28,395	115,221	103,541
Effective tax rate (as a percentage)	26.70%	21.20%	25.50%	23.30%
Provision (benefit) for income taxes	11,390	6,011	29,331	24,140
UNITED STATES
Income Tax Disclosures [Line Items]
Discrete Tax Cost or Benefit Due to Change in Tax Law			(330)
UNITED KINGDOM
Income Tax Disclosures [Line Items]
Discrete Tax Cost or Benefit Due to Change in Tax Law			1,714
FRANCE
Income Tax Disclosures [Line Items]
Discrete Tax Cost or Benefit Due to Change in Tax Law			703
CANADA
Income Tax Disclosures [Line Items]
Increase (decrease) in unrecognized tax benefits	$ (1,000)