Organization and Summary of Significant Accounting Policies 3 (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2014	Dec. 30, 2013	Dec. 31, 2012
Long-lived assets [Line Items]
Asset impairment and disposal charges	$ 0	$ (1,005)	$ (424)
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	0	1,219	348
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	0	1,219	348
Carrying value [Member]
Long-lived assets [Line Items]
Long-lived assets held and used		$ 2,200