Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 27, 2017	Jun. 30, 2016	Jun. 27, 2017	Jun. 30, 2016	Sep. 27, 2016
Segment Reporting Information [Line Items]
Revenues	$ 21,702	$ 18,066	$ 56,496	$ 47,222
Income (Loss) from operations	15	848	(986)	(514)
Capital expenditures	4,481	717	11,178	6,910
Property and equipment, net	27,445		27,445		$ 19,599
Good Times Burgers And Frozen Custard Restaurants [Member]
Segment Reporting Information [Line Items]
Revenues	8,634	7,806	22,550	21,631
Income (Loss) from operations	421	479	82	432
Capital expenditures	1,677	160	4,560	852
Property and equipment, net	7,387		7,387		5,268
Bad Daddys Burger Bar Restaurant [Member]
Segment Reporting Information [Line Items]
Revenues	13,068	10,260	33,946	25,591
Income (Loss) from operations	(244)	513	(540)	(514)
Capital expenditures	2,737	546	6,404	5,967
Property and equipment, net	19,610		19,610		14,174
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Income (Loss) from operations	(162)	(144)	(528)	(432)
Capital expenditures	67	$ 11	214	$ 91
Property and equipment, net	$ 448		$ 448		$ 157