Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Statement of Comprehensive Income [Abstract]
Net Income	$ 6,472	$ 5,504	$ 11,101	$ 9,211
Other Comprehensive Loss
Amortization of actuarial loss and prior service costs, net of tax benefit of approximately $48 and $102 for the three months ended June 28, 2014 and June 29, 2013, respectively, and approximately $85 and $204 for the six months ended June 28, 2014 and June 29, 2013, respectively	(57)	(172)	(126)	(344)
Other Comprehensive Loss	(57)	(172)	(126)	(344)
Comprehensive Income	$ 6,415	$ 5,332	$ 10,975	$ 8,867