Organization and Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 24, 2019	Sep. 25, 2018	Sep. 26, 2017
Organization And Summary Of Significant Accounting Policies [Line Items]
Advertising expenses	$ 313	$ 331
FDIC insured limit	250
Goodwill	15,150	15,150
Asset impairment costs	2,771	72	$ 219
Deferred rent	2,881
Lease incentive obligation	5,698
Deferred and other liabilities	8,907	7,922
Other long term liabilities	8
Deferred gain on sale of building and improvements	320
Notes receivable	25
Receivables	810	1,735
Franchise receivables	63
Lease incentive	505
Receivable from advertising cooperative fund	242
Expected fair value of future lease costs	73	$ 48
Deferred rent and lease	9,000
Minimum [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Lease liability	$ 50,000
Estimated useful lives	3 years
Right-of-use assets	$ 42,000
Maximum [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Lease liability	$ 53,000
Estimated useful lives	8 years
Right-of-use assets	$ 44,000
Four of Bad Daddy's limited liability companies [Member] | Minimum [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Ownership interest	50.00%
Four of Bad Daddy's limited liability companies [Member] | Maximum [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Ownership interest	75.00%
One of Bad Daddy's limited liability companies [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Ownership interest	23.00%
Good Times Drive Thru Inc. [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Goodwill	$ 96
Asset impairment costs	391
Bad Daddy's restaurant in South Carolina [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Asset impairment costs	2,380
Bad Daddy's International, LLC [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Goodwill	$ 15,054
Stock Options [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Shares with anti-dilutive effect excluded from the computation of Diluted EPS	703,164	784,261