Income Taxes Reconciliation of unrecognized tax benefits (Details) (USD $)	3 Months Ended	12 Months Ended
	Sep. 27, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 30, 2011
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Balance, beginning of year		$ (11,209,000)	$ (11,395,000)	$ (17,368,000)
Reductions for expiration of the applicable statute of limitations	9,000,000	8,954,000	0	0
Reductions for tax positions of prior years		145,000	466,000	0
Additions for tax positions of current year		0	243,000	2,067,000
Additions for tax positions of prior years		0	0	(466,000)
Reductions for tax positions of current year		0	0	8,506,000
Foreign currency translation		(82,000)	(37,000)	0
Balance, end of year		(2,192,000)	(11,209,000)	(11,395,000)
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense [Abstract]
Unrecognized tax benefits, increases resulting from settlements with taxing authorities		2,200,000	11,200,000
Unrecognized tax benefits, income tax penalties and interest accrued		200,000	3,300,000	2,900,000
Unrecognized tax benefits, income tax penalties and interest expense		3,200,000	400,000	400,000
UnrecognizedTaxBenefitsReductionsInInterestandPenaltiesAccruedResultingFromLapseOfApplicableStatuteOfLimitations	$ 3,200,000
Time period that uncertain tax positions not expected to materially change		12 months