Defined Benefit Plans (Amount recognized in Accumulated Other Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2012	Dec. 30, 2011
Defined Benefit Pension Plans And Defined Benefit Postretirement Plans Disclosure [Abstract]
Net loss occurring during the year	$ 740	$ 1,306
Amortization of losses	(3,064)	(59)
Prior service cost	342	(459)
Amortization of prior service cost	(10)	(137)
Foreign currency translation	294	(5)
Pre-tax adjustment	(1,698)	646
Taxes	13	(80)
Net loss	$ (1,685)	$ 566