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EXECUTION OF LEASE FOR NEW LOCATION (Details) - Sunrise Lease Agreement [Member]	Jun. 29, 2019 USD ($) ft²
Lessee, Lease, Description [Line Items]
Area of lease | ft²	6,900
Aggregate amounts advanced to limited partnership | $	$ 163,000

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

X

- Definition

Net rentable area for properties owned.

+ References

No definition available.

+ Details

Name:	us-gaap_NetRentableArea
Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_LeaseArrangementTypeAxis=bdl_SunriseLeaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: