Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Mar. 27, 2018	Mar. 28, 2017	Mar. 27, 2018	Mar. 28, 2017	Sep. 26, 2017
Segment Reporting Information [Line Items]
Revenues	$ 23,509	$ 18,239	$ 46,269	$ 34,794
Loss from operations	(41)	(528)	(368)	(1,001)
Capital expenditures	2,222	4,272	4,169	6,697
Property and equipment, net	30,372		30,372		$ 29,690
Good Times Burgers And Frozen Custard Restaurants [Member]
Segment Reporting Information [Line Items]
Revenues	7,466	6,964	15,154	13,916
Loss from operations	(139)	(228)	(158)	(339)
Capital expenditures	157	1,930	177	2,883
Property and equipment, net	5,483		5,483		7,061
Bad Daddys Burger Bar Restaurant [Member]
Segment Reporting Information [Line Items]
Revenues	16,043	11,275	31,115	20,878
Loss from operations	198	(106)	8	(296)
Capital expenditures	2,063	2,226	3,989	3,667
Property and equipment, net	24,451		24,451		22,133
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Loss from operations	(100)	(194)	(218)	(366)
Capital expenditures	2	$ 116	3	$ 147
Property and equipment, net	$ 438		$ 438		$ 496

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

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