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v3.19.3.a.u2

EXECUTION OF LEASES FOR NEW LOCATIONS (Details) | Sep. 28, 2019 USD ($) ft²
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Operating Leased Assets [Line Items] |
Aggregate amounts advanced to limited partnership | $ 337,000
Sunrise, Florida [Member] |
Operating Leased Assets [Line Items] |
Area of lease | ft² | 6,900
Miramar, Florida [Member] |
Operating Leased Assets [Line Items] |
Aggregate amounts advanced to limited partnership | $ 0

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- Definition Aggregate amounts advanced to limited partnership. + References No definition available. + Details
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Namespace Prefix: | bdl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Net rentable area for properties owned. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

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

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_LeaseArrangementTypeAxis=bdl_MiramarFloridaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |