Revenue Disaggregation of Revenue (Details) - USD ($)	3 Months Ended		6 Months Ended
	Apr. 14, 2019	Apr. 15, 2018	Apr. 14, 2019	Apr. 15, 2018
Disaggregation of Revenue [Line Items]
Initial franchise fee			$ 50,000
Royalty and marketing fee, percent of gross sales			5.00%
Revenues	$ 215,727,000	$ 209,772,000	$ 506,513,000	$ 504,235,000
Restaurant Sales [Member]
Disaggregation of Revenue [Line Items]
Revenues	76,682,000	113,938,000	179,514,000	283,575,000
Franchise [Member]
Disaggregation of Revenue [Line Items]
Franchise rental revenues	61,646,000	$ 57,843,000	145,536,000	$ 135,060,000
Royalty [Member]
Disaggregation of Revenue [Line Items]
Revenues	37,148,000		86,655,000
Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenues	35,947,000		83,810,000
Technology Service [Member]
Disaggregation of Revenue [Line Items]
Revenues	3,042,000		6,993,000
Franchise Fees [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 1,262,000		$ 4,005,000