Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net Income	$ 7,472	$ 2,600
Other Comprehensive Income (Loss), Net of Tax:
Amortization of actuarial losses and prior service costs, net of tax benefit of $51 and $45 for the three months ended March 30, 2019 and March 31, 2018, respectively	170	141
Change in unrealized gains and losses on cash flow hedges, net of tax of $54 and $61 for the three months ended March 30, 2019 and March 31, 2018, respectively	(84)
Change in unrealized gains and losses on cash flow hedges, net of tax of $54 and $61 for the three months ended March 30, 2019 and March 31, 2018, respectively		194
Other Comprehensive Income (Loss), Net of Tax	86	335
Comprehensive Income	$ 7,558	$ 2,935