Accumulated Other Comprehensive Loss (Table 1 Change in AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Net of tax	$ 17	$ 145	$ 51	$ 444
Other comprehensive income (loss) before reclassifications, tax			0	0
AOCI Attributable to Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance			(86,907)	(60,623)
Other comprehensive loss before reclassifications, net of tax			9,254	(21,624)
Net of tax			51	444
Ending Balance	(77,602)	(81,803)	(77,602)	(81,803)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance			(18,901)	(23,781)
Other comprehensive loss before reclassifications, net of tax			0	0
Net of tax			51	444
Ending Balance	(18,850)	(23,337)	(18,850)	(23,337)
Tax benefit	14	20	42	51
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance			(68,006)	(36,842)
Other comprehensive loss before reclassifications, net of tax			9,254	(21,624)
Net of tax			0	0
Ending Balance	$ (58,752)	$ (58,466)	$ (58,752)	$ (58,466)