Impairment Of Long-Lived Assets And Other Lease Charges (Details) (USD $)	12 Months Ended
	Dec. 30, 2012	Jan. 01, 2012	Jan. 02, 2011
Impaired Long-Lived Assets Held and Used [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	$ 400,000
Impairment and other lease charges	977,000	1,293,000	709,000
Underperforming Restaurants [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment and other lease charges	$ 1,000,000	$ 1,300,000	$ 700,000