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FLANIGAN'S FISH COMPANY, LLC (Details) | Sep. 28, 2019
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Flanigan's Fish Company, LLC [Member] |
Percentage of noncontrolling interest | 49.00%

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- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | srt_OwnershipAxis=bdl_FlanigansFishCompanyLLCFMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |