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- References

No definition available.

Name:	bdl_FAIRVALUEMEASUREMENTSOFFINANCIALINSTRUMENTSDetailsLineItems
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Data Type:	xbrli:stringItemType
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Period Type:	duration

The number of variable rate debt instruments.

No definition available.

Name:	bdl_NumberOfVariableRateDebtInstruments
Namespace Prefix:	bdl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Fixed interest rate related to the interest rate derivative.

No definition available.

Name:	us-gaap_DerivativeFixedInterestRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

Nominal or face amount used to calculate payment on derivative.

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Name:	us-gaap_DerivativeNotionalAmount
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Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

The number of derivative instruments of a particular group held by the entity.

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Name:	us-gaap_DerivativeNumberOfInstrumentsHeld
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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	us-gaap_DerivativeTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Variable interest rate in effect as of the balance sheet date related to the interest rate derivative.

No definition available.

Name:	us-gaap_DerivativeVariableInterestRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

This element represents the current and noncurrent portions of a long-term real estate loan with an initial maturity beyond one year or beyond the normal operating cycle, if longer, to finance building costs. The funds are disbursed as needed or in accordance with a prearranged plan; generally, a portion of the funds is disbursed at inception and the remainder as construction progresses. The money is repaid on completion of the project (generally one to seven years), usually from the proceeds of a mortgage loan. The rate is normally higher than the prime rate, and there is usually an origination fee. The effective yield on these loans tends to be high, and the lender has a security interest in the real property.

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Name:	us-gaap_LongtermConstructionLoanCurrentAndNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Name:	dei_LegalEntityAxis=bdl_BSBYScreenRateMember
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Name:	us-gaap_DerivativeInstrumentRiskAxis=bdl_BSBYScreenRateMember
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Data Type:	na
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Name:	us-gaap_DerivativeInstrumentRiskAxis=bdl_LoanSwapMember
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