Impairment of Long-Lived Assets and Assets Held for Sale (Details) (USD $)	3 Months Ended		9 Months Ended			3 Months Ended
	Sep. 23, 2012	Sep. 25, 2011	Sep. 23, 2012	Sep. 25, 2011	Sep. 23, 2012 Pittsburg, Kansas Facility [Member]	Sep. 25, 2011 Johnson City, Tennessee Facility [Member]	Dec. 25, 2011 Johnson City, Tennessee Facility [Member]
Long Lived Assets Held-for-sale [Line Items]
Impairment of Long-Lived Assets to be Disposed of	$ 0	$ 0	$ 0	$ 340,000		$ 340,000
Long Lived Assets Held-for-sale, Proceeds from Sale					$ 2,000,000		$ 1,700,000