Impairment of Long-Lived Assets and Goodwill (Narrative) (Details) $ in Thousands	3 Months Ended
	Dec. 29, 2020 USD ($) restaurants	Sep. 29, 2020 USD ($)
Impaired Long-Lived Assets Held and Used [Line Items]
Number of restaurants impaired | restaurants	2
Goodwill	$ 5,150	$ 5,150
Good Times Drive Thru Inc. [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Goodwill	96
Bad Daddy's [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Goodwill	$ 5,054