Impairment of Assets (Details) (USD $)	3 Months Ended						12 Months Ended
	Mar. 31, 2013	Dec. 30, 2012	Sep. 23, 2012	Jun. 24, 2012	Mar. 25, 2012	Jun. 26, 2011	Dec. 29, 2013	Dec. 30, 2012	Dec. 25, 2011
Goodwill [Line Items]
Impairment of assets, property, plant and equipment	$ 0	$ 0	$ 0	$ 0	$ 0	$ 7,458,000	$ 0	$ 0	$ 7,458,000
Net Carrying Value [Member]
Goodwill [Line Items]
Carrying value of intangible asset after impairment charge				$ 0