Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Jul. 01, 2017	Jul. 02, 2016
Statement of Comprehensive Income [Abstract]
Net Income	$ 3,823	$ 3,861	$ 5,938	$ 17,411
Other Comprehensive (Loss) Income
Amortization of actuarial losses and prior service costs, net of tax benefit of $88 and $73 for the three months ended July 1, 2017 and July 2, 2016, respectively, and $151 and $141 for the six months ended July 1, 2017 and July 2, 2016, respectively	114	117	254	240
Change in unrealized gains and losses on cash flow hedges, net of tax of $72 and $87 for the three months ended July 1, 2017 and July 2, 2016, respectively, and $144 and $326 for the six months ended July 1, 2017 and July 2, 2016, respectively	(122)	(148)	(243)	(556)
Other Comprehensive (Loss) Income	(8)	(31)	11	(316)
Comprehensive Income	$ 3,815	$ 3,830	$ 5,949	$ 17,095