Impairment of Long-Lived Assets and Goodwill (Narrative) (Details) $ in Thousands	9 Months Ended
	Jun. 29, 2021 USD ($) restaurants	Jun. 30, 2020 USD ($)	Sep. 29, 2020 USD ($)	Sep. 29, 2019 USD ($)
Impaired Long-Lived Assets Held and Used [Line Items]
Number of restaurants impaired | restaurants	2
Goodwill	$ 5,150	$ 5,150	$ 5,150	$ 15,150
Bad Daddy's Restaurants In North Carolina and Tennessee [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Non-cash impairment charge		$ 5,291
Good Times [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