Non-controlling Interests (Schedule of Noncontrolling Interests) (Details) - USD ($) $ in Thousands	3 Months Ended					6 Months Ended
	Mar. 30, 2021	Dec. 29, 2020	Mar. 31, 2020	Mar. 31, 2020	Dec. 29, 2019	Mar. 30, 2021	Mar. 31, 2020
Noncontrolling Interest [Line Items]
Balance at September 29, 2020		$ 1,293				$ 1,293
Income	$ 426	363	$ 174	$ 174	$ 212	789	$ 386
Contributions					22
Distributions	(536)	(319)	$ (95)		$ (291)	(855)
Balance at March 30, 2021	1,227					1,227
Bad Daddy's [Member]
Noncontrolling Interest [Line Items]
Balance at September 29, 2020		1,023				1,023
Income						425
Distributions						(460)
Balance at March 30, 2021	988					988
Good Times [Member]
Noncontrolling Interest [Line Items]
Balance at September 29, 2020		$ 270				270
Income						364
Distributions						(395)
Balance at March 30, 2021	$ 239					$ 239