Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Statement of Comprehensive Income [Abstract]
Net Income	$ 2,115	$ 13,550
Other Comprehensive Income (Loss)
Amortization of actuarial losses and prior service costs, net of tax benefit of $63 and $68 for the three months ended April 1, 2017 and April 2, 2016, respectively	140	123
Change in unrealized gains and losses on cash flow hedges, net of tax of $72 and $239 for the three months ended April 1, 2017 and April 2, 2016, respectively	(121)	(408)
Other Comprehensive Income (Loss)	19	(285)
Comprehensive Income	$ 2,134	$ 13,265