Discontinued Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012	Dec. 29, 2012	Mar. 26, 2011
Operating results from discontinued operations
Facility lease payments			$ 11,677
Net sales	0	0	0	0
Income (loss) from operatoins of discontinued businesses, before income taxes	(172)	49	(1,894)	221
Provision (benefit) for income taxes	(59)	231	(711)	284
Income (loss) from operations of discontinued businesses, net of taxes	(113)	(182)	(1,183)	(63)
Discontinued Operation, Provision for Loss (Gain) on Disposal, before Income Tax			1,316
Assets and liabilities of discontinued operations
Current assets	758		758		495
Long-term assets	3,326		3,326		3,328
Total assets	4,084		4,084		3,823
Current liabilities	1,944		1,944		1,802
Long-term liabilities of discontinued businesses	8,531		8,531		8,795
Total liabilities	10,475		10,475		10,597
Guarantor Obligations, Current Carrying Value	$ 10,375		$ 10,375			$ 2,994