Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Statement of Comprehensive Income [Abstract]
Net Income	$ 2,600	$ 2,115
Other Comprehensive Income, Net of Tax:
Amortization of actuarial losses and prior service costs, net of tax benefit of $45 and $63 for the three months ended March 31, 2018 and April 1, 2017, respectively	141	140
Change in unrealized gains and losses on cash flow hedges, net of tax of $61 and $72 for the three months ended March 31, 2018 and April 1, 2017, respectively	194	(121)
Other Comprehensive Income	335	19
Comprehensive Income	$ 2,935	$ 2,134