Accumulated Other Comprehensive Loss (Table 2 Reclassifications out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2016	Apr. 04, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Net of tax	$ 17	$ 148
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Amortization of unrecognized prior service costs	6	7
Amortization of unrecognized cumulative actuarial net loss	25	158
Total before tax	31	165
Tax expense	(14)	(17)
Net of tax	$ 17	$ 148