Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 28, 2017	Mar. 31, 2016	Mar. 28, 2017	Mar. 31, 2016	Sep. 27, 2016
Segment Reporting Information [Line Items]
Revenues	$ 18,239	$ 15,318	$ 34,794	$ 29,156
Income (Loss) from operations	(528)	(431)	(1,001)	(1,362)
Capital expenditures	4,272	2,238	6,697	6,193
Property and equipment, net	24,122		24,122		$ 19,599
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Income (Loss) from operations	(194)	(144)	(366)	(288)
Capital expenditures	116	67	147	80
Property and equipment, net	410		410		157
Bad Daddys Burger Bar Restaurant [Member]
Segment Reporting Information [Line Items]
Revenues	11,275	8,530	20,878	15,331
Income (Loss) from operations	(106)	(307)	(296)	(1,027)
Capital expenditures	2,226	1,937	3,667	5,421
Property and equipment, net	17,345		17,345		14,174
Good Times Burgers And Frozen Custard Restaurants [Member]
Segment Reporting Information [Line Items]
Revenues	6,964	6,788	13,916	13,825
Income (Loss) from operations	(228)	20	(339)	(47)
Capital expenditures	1,930	$ 234	2,883	$ 692
Property and equipment, net	$ 6,367		$ 6,367		$ 5,268