Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2016	Apr. 04, 2015
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	$ (131,327)
Other comprehensive income before reclassifications	33,496
Tax effect	(337)
Other comprehensive income before reclassifications, net of tax	33,159
Amounts reclassified out of AOCI	2,669
Tax effect of reclassification	(801)
Amounts reclassified out of AOCI, net of tax	1,868
Other comprehensive income (loss)	35,027	$ (74,359)
Ending Balance	(96,300)
Unrealized Gain (Loss) on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	498
Other comprehensive income before reclassifications	964
Tax effect	(337)
Other comprehensive income before reclassifications, net of tax	627
Amounts reclassified out of AOCI	0
Tax effect of reclassification	0
Amounts reclassified out of AOCI, net of tax	0
Other comprehensive income (loss)	627
Ending Balance	1,125
Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	4,597
Other comprehensive income before reclassifications	32,532
Tax effect	0
Other comprehensive income before reclassifications, net of tax	32,532
Amounts reclassified out of AOCI	0
Tax effect of reclassification	0
Amounts reclassified out of AOCI, net of tax	0
Other comprehensive income (loss)	32,532
Ending Balance	37,129
Pension and Other Post-Retirement Actuarial Items [Member]
Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	(136,422)
Other comprehensive income before reclassifications	0
Tax effect	0
Other comprehensive income before reclassifications, net of tax	0
Amounts reclassified out of AOCI	2,669
Tax effect of reclassification	(801)
Amounts reclassified out of AOCI, net of tax	1,868
Other comprehensive income (loss)	1,868
Ending Balance	$ (134,554)