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INSURANCE PREMIUMS (Details) $ in Thousands	12 Months Ended
	Sep. 28, 2024 USD ($)
Insurance Premiums [Line Items]
Premiums policies	$ 3,920
Financed Insurance Premiums [Member]
Insurance Premiums [Line Items]
Insurance policies premiums	$ 850,000

X

- Definition

Represent the amount of annual insurance premium cover franchises.

+ References

No definition available.

+ Details

Name:	bdl_AnnualInsurancePremiumCoverFranchises
Namespace Prefix:	bdl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_EffectsOfReinsuranceLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Cash received as payments for insurance premiums during the current period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 25
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-25

+ Details

Name:	us-gaap_ProceedsFromInsurancePremiumsCollected
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_DebtInstrumentAxis=bdl_FinancedInsurancePremiumsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: