Stockholders' Equity (Summary of Activity in Non-Controlling Interests) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 24, 2019	Sep. 25, 2018
Noncontrolling Interest [Line Items]
Balance at September 25, 2018	$ 3,238
Income attributable to non-controlling interests	889	$ 1,017
Net Distributions to unrelated limited partners	(1,817)	(1,425)
Purchase of non-controlling interest	(2,959)
Balance at September 24, 2019	1,522	3,238
Good Times Drive Thru Inc. [Member]
Noncontrolling Interest [Line Items]
Balance at September 25, 2018	377
Income attributable to non-controlling interests	381
Net Distributions to unrelated limited partners	(426)
Purchase of non-controlling interest
Balance at September 24, 2019	332	377
Bad Daddy's International, LLC [Member]
Noncontrolling Interest [Line Items]
Balance at September 25, 2018	2,861
Income attributable to non-controlling interests	508
Net Distributions to unrelated limited partners	(1,391)
Purchase of non-controlling interest	(788)
Balance at September 24, 2019	$ 1,190	$ 2,861