Accumulated Other Comprehensive Loss (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2013
Other Comprehensive Income (Loss), Before Tax [Roll Forward]
Balance at the beginning of the period	$ (17,247)
Other Comprehensive Loss before Reclassifications	(5,543)
Reclassifications Out of Accumulated Other Comprehensive Loss	153
Balance at the end of the period	(22,637)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax [Roll Forward]
Balance at the Beginning of the Period	6,040
Other Comprehensive Loss before Reclassficiations	(5,543)
Reclassifications Out of Accumulated other Comprehensive Loss	0
Balance at the End of the Period	497
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, before Tax [Roll Forward]
Balance at the Beginning of the Period	(23,287)
Other Comprehensive Loss before Reclassifications	0
Reclassfications Out of Accumulated Other Comprehensive Loss	153
Balance at the End of the Period	(23,134)
Reclassifications Out of Accumulated Other Comprehensive Income (Loss) [Line Items]
Amortization of unrecognized prior service costs	5
Amortization of unrecognized cumulative actuarial net loss	184
Total before tax	189
Tax benefit	(36)
Net of tax	$ 153