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EXECUTION OF LEASES FOR NEW LOCATIONS (Details)	Oct. 03, 2020 USD ($)
Miramar, Florida [Member]
Operating Leased Assets [Line Items]
Aggregate amounts advanced to limited partnership	$ 0

X

- Definition

Aggregate amounts advanced to limited partnership.

+ References

No definition available.

+ Details

Name:	bdl_AggregateAmountsAdvancedToLimitedPartnership
Namespace Prefix:	bdl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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

X

- Details

Name:	us-gaap_LeaseContractualTermAxis=bdl_MiramarFloridaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: