Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2020	Mar. 26, 2019	Mar. 31, 2020	Mar. 26, 2019	Sep. 24, 2019
Segment Reporting Information [Line Items]
Revenues	$ 26,182	$ 27,167	$ 56,996	$ 52,532
Income (loss) from operations	(14,533)	18	(14,905)	(563)
Capital expenditures	341	875	1,954	3,793
Property and equipment, net	30,488		30,488		$ 35,677
Bad Daddys [Member]
Segment Reporting Information [Line Items]
Revenues	19,369	20,474	42,271	38,815
Income (loss) from operations	(14,515)	374	(15,000)	(194)
Capital expenditures	264	632	1,841	3,118
Property and equipment, net	25,710		25,710		30,479
Good Times [Member]
Segment Reporting Information [Line Items]
Revenues	6,813	6,693	14,725	13,727
Income (loss) from operations	45	(219)	209	(145)
Capital expenditures	72	241	87	629
Property and equipment, net	4,523		4,523		4,890
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations	(63)	(137)	(114)	(224)
Capital expenditures	5	$ 2	26	$ 46
Property and equipment, net	$ 255		$ 255		$ 308