Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Abstract]
Tax effect of AFS securities reclassified out of AOCI	$ (1)
Reclassifications of AFS investments out of AOCI	5
Pension and other post-retirement actuarial items [Abstract]
Beginning Balance	(178,956)
Other comprehensive income before reclassifications	0
Tax Effect	0
Other comprehensive income before reclassifications, net of tax	0
Amounts reclassified out of AOCI	4,833
Tax Effect	(1,602)
Amounts reclassified out of AOCI, net of tax	3,231
Net comprehensive income	(3,231)	(2,304)
Ending Balance	(175,725)
Currency translation adjustment [Abstract]
Beginning Balance	167,461
Other comprehensive income before reclassifications	(25,121)
Tax Effect	0
Other comprehensive income before reclassifications, net of tax	(25,121)
Amounts reclassified out of AOCI	0
Tax Effect	0
Amounts reclassified out of AOCI, net of tax	0
Net comprehensive income	(25,121)	23,228
Ending Balance	142,340
Unrealized gain (loss) on available-for-sale securities [Abstract]
Beginning Balance	1,273
Other comprehensive income before reclassifications	711
Tax Effect	249
Other comprehensive income before reclassifications, net of tax	462
Amounts reclassified out of AOCI	(50)
Tax Effect	18
Amounts reclassified out of AOCI, net of tax	(32)
Net comprehensive income	430	814
Ending Balance	1,703
Other Comprehensive Income (Loss) - Total [Abstract]
Beginning Balance	(10,222)
Other comprehensive income before reclassifications	(24,410)
Tax Effect	249
Other comprehensive income before reclassifications, net of tax	(24,659)
Amounts reclassified out of AOCI	4,783
Tax Effect	(1,584)
Amounts reclassified out of AOCI, net of tax	3,199
Net comprehensive income	(21,460)	26,346
Ending Balance	$ (31,682)