Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Statement of Comprehensive Income [Abstract]
Net Income	$ 2,622	$ 4,636	$ 13,723	$ 13,847
Other Comprehensive Loss
Amortization of actuarial loss and prior service costs, net of tax benefit of approximately $40 and $102 for the three months ended September 27, 2014 and September 28, 2013, respectively, and approximately $124 and $306 for the nine months ended September 27, 2014 and September 28, 2013, respectively	(66)	(172)	(192)	(516)
Other Comprehensive Loss	(66)	(172)	(192)	(516)
Comprehensive Income	$ 2,556	$ 4,464	$ 13,531	$ 13,331