Organization and Summary of Significant Accounting Policies (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 30, 2013	Dec. 31, 2012	Jan. 02, 2012
Long-lived assets [Line Items]
Asset impairment and disposal charges	$ (1,005)	$ (424)	$ (431)
Underperforming assets [Member]
Long-lived assets [Line Items]
Number of underperforming restaurants	10	4
Total value at end of period [Member]
Long-lived assets [Line Items]
Long-lived assets held and used	1,219	348	647
Prices in Active Markets for Identical Assets (Level 1) [Member]
Long-lived assets [Line Items]
Long-lived assets held and used	0	0	0
Significant Observable Inputs (Level 2) [Member]
Long-lived assets [Line Items]
Long-lived assets held and used	0	0	0
Significant Unobservable Inputs (Level 3) [Member]
Long-lived assets [Line Items]
Long-lived assets held and used	1,219	348	647
Carrying value [Member]
Long-lived assets [Line Items]
Long-lived assets held and used	$ 2,200