Impairment of Long-Lived Assets and Assets Held for Sale (Details) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended			3 Months Ended
	Jun. 24, 2012	Jun. 26, 2011	Jun. 24, 2012	Jun. 26, 2011	Dec. 25, 2011 Remaining Closed Facility [Member]	Dec. 25, 2011 Remaining Closed Facility [Member] Fair Value, Inputs, Level 2 [Member]	Dec. 26, 2010 Remaining Closed Facility [Member] Fair Value, Inputs, Level 2 [Member]	Jun. 26, 2011 Johnson City, Tennessee Facility [Member]	Dec. 25, 2011 Johnson City, Tennessee Facility [Member]
Long Lived Assets Held-for-sale [Line Items]
Assets Held-for-sale, Long Lived, Fair Value Disclosure						$ 1,500,000	$ 2,500,000
Impairment of Long-Lived Assets to be Disposed of	0	340,000	0	340,000	1,000,000			300,000
Long Lived Assets Held-for-sale, Proceeds from Sale									$ 1,700,000