<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.22.4</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>273</ContextCount>
  <ElementCount>384</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>124</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>5</UnitCount>
  <MyReports>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>000 - Document - Document And Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/DocumentAndEntityInformation</Role>
      <ShortName>Document And Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>001 - Statement - CONSOLIDATED BALANCE SHEETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ConsolidatedBalanceSheet</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>002 - Statement - CONSOLIDATED BALANCE SHEETS (Parentheticals)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ConsolidatedBalanceSheet_Parentheticals</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS (Parentheticals)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>003 - Statement - CONSOLIDATED STATEMENTS OF INCOME</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ConsolidatedIncomeStatement</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF INCOME</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>004 - Statement - CONSOLIDATED STATEMENTS OF INCOME (Parentheticals)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ConsolidatedIncomeStatement_Parentheticals</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF INCOME (Parentheticals)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>005 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS??? EQUITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ShareholdersEquityType2or3</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF STOCKHOLDERS??? EQUITY</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>006 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ConsolidatedCashFlow</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CASH FLOWS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>007 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIES</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>008 - Disclosure - PROPERTY AND EQUIPMENT, NET</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/PROPERTYANDEQUIPMENTNET</Role>
      <ShortName>PROPERTY AND EQUIPMENT, NET</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>009 - Disclosure - LEASEHOLD INTERESTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/LEASEHOLDINTERESTS</Role>
      <ShortName>LEASEHOLD INTERESTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>010 - Disclosure - INVESTMENT IN LIMITED PARTNERSHIPS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/INVESTMENTINLIMITEDPARTNERSHIPS</Role>
      <ShortName>INVESTMENT IN LIMITED PARTNERSHIPS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>011 - Disclosure - PRIVATE OFFERINGS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/PRIVATEOFFERINGS</Role>
      <ShortName>PRIVATE OFFERINGS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>012 - Disclosure - PURCHASE OF 4 COP LIQUOR LICENSE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/PURCHASEOF4COPLIQUORLICENSE</Role>
      <ShortName>PURCHASE OF 4 COP LIQUOR LICENSE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>013 - Disclosure - EXECUTION OF LEASE FOR NEW LOCATION; BUSINESS ACQUISITION OF ???BRENDAN???S SPORTS PUB???</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/EXECUTIONOFLEASEFORNEWLOCATIONBUSINESSACQUISITIONOFBRENDANSSPORTSPUB</Role>
      <ShortName>EXECUTION OF LEASE FOR NEW LOCATION; BUSINESS ACQUISITION OF ???BRENDAN???S SPORTS PUB???</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>014 - Disclosure - RE-FINANCING OF EXISTING MORTGAGES; FINANCED INSURANCE PREMIUMS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/REFINANCINGOFEXISTINGMORTGAGESFINANCEDINSURANCEPREMIUMS</Role>
      <ShortName>RE-FINANCING OF EXISTING MORTGAGES; FINANCED INSURANCE PREMIUMS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>015 - Disclosure - CORONAVIRUS PANDEMIC</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/CORONAVIRUSPANDEMIC</Role>
      <ShortName>CORONAVIRUS PANDEMIC</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>016 - Disclosure - RE-CONSTRUCTION FOLLOWING CASUALTY LOSS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/RECONSTRUCTIONFOLLOWINGCASUALTYLOSS</Role>
      <ShortName>RE-CONSTRUCTION FOLLOWING CASUALTY LOSS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>017 - Disclosure - LIQUOR LICENSES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/LIQUORLICENSES</Role>
      <ShortName>LIQUOR LICENSES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>018 - Disclosure - INCOME TAXES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/INCOMETAXES</Role>
      <ShortName>INCOME TAXES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>019 - Disclosure - DEBT</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/DEBT</Role>
      <ShortName>DEBT</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>020 - Disclosure - COMMITMENTS, CONTINGENCIES AND OTHER MATTERS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/COMMITMENTSCONTINGENCIESANDOTHERMATTERS</Role>
      <ShortName>COMMITMENTS, CONTINGENCIES AND OTHER MATTERS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>021 - Disclosure - FAIR VALUE MEASUREMENTS OF FINANCIAL INSTRUMENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/FAIRVALUEMEASUREMENTSOFFINANCIALINSTRUMENTS</Role>
      <ShortName>FAIR VALUE MEASUREMENTS OF FINANCIAL INSTRUMENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>022 - Disclosure - COMMON STOCK</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/COMMONSTOCK</Role>
      <ShortName>COMMON STOCK</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>023 - Disclosure - BUSINESS SEGMENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/BUSINESSSEGMENTS</Role>
      <ShortName>BUSINESS SEGMENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>024 - Disclosure - QUARTERLY INFORMATION (UNAUDITED)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/QUARTERLYINFORMATIONUNAUDITED</Role>
      <ShortName>QUARTERLY INFORMATION (UNAUDITED)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>025 - Disclosure - 401(k) PLAN</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/401kPLAN</Role>
      <ShortName>401(k) PLAN</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>026 - Disclosure - SUBSEQUENT EVENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/SUBSEQUENTEVENTS</Role>
      <ShortName>SUBSEQUENT EVENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>027 - Disclosure - Accounting Policies, by Policy (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/AccountingPoliciesByPolicy</Role>
      <ShortName>Accounting Policies, by Policy (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>028 - Disclosure - PROPERTY AND EQUIPMENT, NET (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/PROPERTYANDEQUIPMENTNETTables</Role>
      <ShortName>PROPERTY AND EQUIPMENT, NET (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://flanigans.net/role/PROPERTYANDEQUIPMENTNET</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>029 - Disclosure - LEASEHOLD INTERESTS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/LEASEHOLDINTERESTSTables</Role>
      <ShortName>LEASEHOLD INTERESTS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://flanigans.net/role/LEASEHOLDINTERESTS</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>030 - Disclosure - INVESTMENT IN LIMITED PARTNERSHIPS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/INVESTMENTINLIMITEDPARTNERSHIPSTables</Role>
      <ShortName>INVESTMENT IN LIMITED PARTNERSHIPS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://flanigans.net/role/INVESTMENTINLIMITEDPARTNERSHIPS</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>031 - Disclosure - INCOME TAXES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/INCOMETAXESTables</Role>
      <ShortName>INCOME TAXES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://flanigans.net/role/INCOMETAXES</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>032 - Disclosure - DEBT (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/DEBTTables</Role>
      <ShortName>DEBT (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://flanigans.net/role/DEBT</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>033 - Disclosure - COMMITMENTS, CONTINGENCIES AND OTHER MATTERS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/COMMITMENTSCONTINGENCIESANDOTHERMATTERSTables</Role>
      <ShortName>COMMITMENTS, CONTINGENCIES AND OTHER MATTERS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://flanigans.net/role/COMMITMENTSCONTINGENCIESANDOTHERMATTERS</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>034 - Disclosure - BUSINESS SEGMENTS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/BUSINESSSEGMENTSTables</Role>
      <ShortName>BUSINESS SEGMENTS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://flanigans.net/role/BUSINESSSEGMENTS</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>035 - Disclosure - QUARTERLY INFORMATION (UNAUDITED) (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/QUARTERLYINFORMATIONUNAUDITEDTables</Role>
      <ShortName>QUARTERLY INFORMATION (UNAUDITED) (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://flanigans.net/role/QUARTERLYINFORMATIONUNAUDITED</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>036 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIES</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>037 - Disclosure - PROPERTY AND EQUIPMENT, NET (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/PROPERTYANDEQUIPMENTNETDetails</Role>
      <ShortName>PROPERTY AND EQUIPMENT, NET (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/PROPERTYANDEQUIPMENTNETTables</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>038 - Disclosure - PROPERTY AND EQUIPMENT, NET (Details) - Schedule of property and equipment</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ScheduleofpropertyandequipmentTable</Role>
      <ShortName>PROPERTY AND EQUIPMENT, NET (Details) - Schedule of property and equipment</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/PROPERTYANDEQUIPMENTNETTables</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>039 - Disclosure - LEASEHOLD INTERESTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/LEASEHOLDINTERESTSDetails</Role>
      <ShortName>LEASEHOLD INTERESTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/LEASEHOLDINTERESTSTables</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>040 - Disclosure - LEASEHOLD INTERESTS (Details) - Schedule of Leasehold Interests</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ScheduleofLeaseholdInterestsTable</Role>
      <ShortName>LEASEHOLD INTERESTS (Details) - Schedule of Leasehold Interests</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/LEASEHOLDINTERESTSTables</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>041 - Disclosure - LEASEHOLD INTERESTS (Details) - Schedule of Future Amortization of Leasehold Interests</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ScheduleofFutureAmortizationofLeaseholdInterestsTable</Role>
      <ShortName>LEASEHOLD INTERESTS (Details) - Schedule of Future Amortization of Leasehold Interests</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/LEASEHOLDINTERESTSTables</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>042 - Disclosure - INVESTMENT IN LIMITED PARTNERSHIPS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/INVESTMENTINLIMITEDPARTNERSHIPSDetails</Role>
      <ShortName>INVESTMENT IN LIMITED PARTNERSHIPS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/INVESTMENTINLIMITEDPARTNERSHIPSTables</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>043 - Disclosure - INVESTMENT IN LIMITED PARTNERSHIPS (Details) - Schedule of financial information pertaining to limited partnership investment</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ScheduleoffinancialinformationpertainingtolimitedpartnershipinvestmentTable</Role>
      <ShortName>INVESTMENT IN LIMITED PARTNERSHIPS (Details) - Schedule of financial information pertaining to limited partnership investment</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/INVESTMENTINLIMITEDPARTNERSHIPSTables</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>044 - Disclosure - PRIVATE OFFERINGS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/PRIVATEOFFERINGSDetails</Role>
      <ShortName>PRIVATE OFFERINGS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/PRIVATEOFFERINGS</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>045 - Disclosure - PURCHASE OF 4 COP LIQUOR LICENSE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/PURCHASEOF4COPLIQUORLICENSEDetails</Role>
      <ShortName>PURCHASE OF 4 COP LIQUOR LICENSE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/PURCHASEOF4COPLIQUORLICENSE</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>046 - Disclosure - EXECUTION OF LEASE FOR NEW LOCATION; BUSINESS ACQUISITION OF ???BRENDAN???S SPORTS PUB??? (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/EXECUTIONOFLEASEFORNEWLOCATIONBUSINESSACQUISITIONOFBRENDANSSPORTSPUBDetails</Role>
      <ShortName>EXECUTION OF LEASE FOR NEW LOCATION; BUSINESS ACQUISITION OF ???BRENDAN???S SPORTS PUB??? (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/EXECUTIONOFLEASEFORNEWLOCATIONBUSINESSACQUISITIONOFBRENDANSSPORTSPUB</ParentRole>
      <Position>47</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>047 - Disclosure - RE-FINANCING OF EXISTING MORTGAGES; FINANCED INSURANCE PREMIUMS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/REFINANCINGOFEXISTINGMORTGAGESFINANCEDINSURANCEPREMIUMSDetails</Role>
      <ShortName>RE-FINANCING OF EXISTING MORTGAGES; FINANCED INSURANCE PREMIUMS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/REFINANCINGOFEXISTINGMORTGAGESFINANCEDINSURANCEPREMIUMS</ParentRole>
      <Position>48</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>048 - Disclosure - CORONAVIRUS PANDEMIC (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/CORONAVIRUSPANDEMICDetails</Role>
      <ShortName>CORONAVIRUS PANDEMIC (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/CORONAVIRUSPANDEMIC</ParentRole>
      <Position>49</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>049 - Disclosure - LIQUOR LICENSES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/LIQUORLICENSESDetails</Role>
      <ShortName>LIQUOR LICENSES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/LIQUORLICENSES</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>050 - Disclosure - INCOME TAXES (Details) - Schedule of components of the provision for income taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ScheduleofcomponentsoftheprovisionforincometaxesTable</Role>
      <ShortName>INCOME TAXES (Details) - Schedule of components of the provision for income taxes</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/INCOMETAXESTables</ParentRole>
      <Position>51</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>051 - Disclosure - INCOME TAXES (Details) - Schedule of reconciliation of income tax computed at the statutory federal rate to income tax expense</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ScheduleofreconciliationofincometaxcomputedatthestatutoryfederalratetoincometaxexpenseTable</Role>
      <ShortName>INCOME TAXES (Details) - Schedule of reconciliation of income tax computed at the statutory federal rate to income tax expense</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/INCOMETAXESTables</ParentRole>
      <Position>52</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>052 - Disclosure - INCOME TAXES (Details) - Schedule of components of deferred tax assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ScheduleofcomponentsofdeferredtaxassetsTable</Role>
      <ShortName>INCOME TAXES (Details) - Schedule of components of deferred tax assets</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/INCOMETAXESTables</ParentRole>
      <Position>53</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>053 - Disclosure - DEBT (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/DEBTDetails</Role>
      <ShortName>DEBT (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/DEBTTables</ParentRole>
      <Position>54</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>054 - Disclosure - DEBT (Details) - Schedule of long term debt</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ScheduleoflongtermdebtTable</Role>
      <ShortName>DEBT (Details) - Schedule of long term debt</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/DEBTTables</ParentRole>
      <Position>55</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>055 - Disclosure - DEBT (Details) - Schedule of long term debt (Parentheticals)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ScheduleoflongtermdebtTable_Parentheticals</Role>
      <ShortName>DEBT (Details) - Schedule of long term debt (Parentheticals)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/DEBTTables</ParentRole>
      <Position>56</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>056 - Disclosure - DEBT (Details) - Schedule of long term debt maturities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ScheduleoflongtermdebtmaturitiesTable</Role>
      <ShortName>DEBT (Details) - Schedule of long term debt maturities</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/DEBTTables</ParentRole>
      <Position>57</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>057 - Disclosure - COMMITMENTS, CONTINGENCIES AND OTHER MATTERS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/COMMITMENTSCONTINGENCIESANDOTHERMATTERSDetails</Role>
      <ShortName>COMMITMENTS, CONTINGENCIES AND OTHER MATTERS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/COMMITMENTSCONTINGENCIESANDOTHERMATTERSTables</ParentRole>
      <Position>58</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>058 - Disclosure - COMMITMENTS, CONTINGENCIES AND OTHER MATTERS (Details) - Schedule of Components of Lease Expense</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ScheduleofComponentsofLeaseExpenseTable</Role>
      <ShortName>COMMITMENTS, CONTINGENCIES AND OTHER MATTERS (Details) - Schedule of Components of Lease Expense</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/COMMITMENTSCONTINGENCIESANDOTHERMATTERSTables</ParentRole>
      <Position>59</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>059 - Disclosure - COMMITMENTS, CONTINGENCIES AND OTHER MATTERS (Details) - Schedule of supplemental balance sheet information related to leases</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ScheduleofsupplementalbalancesheetinformationrelatedtoleasesTable</Role>
      <ShortName>COMMITMENTS, CONTINGENCIES AND OTHER MATTERS (Details) - Schedule of supplemental balance sheet information related to leases</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/COMMITMENTSCONTINGENCIESANDOTHERMATTERSTables</ParentRole>
      <Position>60</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>060 - Disclosure - COMMITMENTS, CONTINGENCIES AND OTHER MATTERS (Details) - Schedule of Minimum Future Lease Payments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ScheduleofMinimumFutureLeasePaymentsTable</Role>
      <ShortName>COMMITMENTS, CONTINGENCIES AND OTHER MATTERS (Details) - Schedule of Minimum Future Lease Payments</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/COMMITMENTSCONTINGENCIESANDOTHERMATTERSTables</ParentRole>
      <Position>61</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>061 - Disclosure - FAIR VALUE MEASUREMENTS OF FINANCIAL INSTRUMENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/FAIRVALUEMEASUREMENTSOFFINANCIALINSTRUMENTSDetails</Role>
      <ShortName>FAIR VALUE MEASUREMENTS OF FINANCIAL INSTRUMENTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/FAIRVALUEMEASUREMENTSOFFINANCIALINSTRUMENTS</ParentRole>
      <Position>62</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>062 - Disclosure - COMMON STOCK (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/COMMONSTOCKDetails</Role>
      <ShortName>COMMON STOCK (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/COMMONSTOCK</ParentRole>
      <Position>63</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>063 - Disclosure - BUSINESS SEGMENTS (Details) - Schedule of business segments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ScheduleofbusinesssegmentsTable</Role>
      <ShortName>BUSINESS SEGMENTS (Details) - Schedule of business segments</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/BUSINESSSEGMENTSTables</ParentRole>
      <Position>64</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>064 - Disclosure - QUARTERLY INFORMATION (UNAUDITED) (Details) - Schedule of quarterly information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ScheduleofquarterlyinformationTable</Role>
      <ShortName>QUARTERLY INFORMATION (UNAUDITED) (Details) - Schedule of quarterly information</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/QUARTERLYINFORMATIONUNAUDITEDTables</ParentRole>
      <Position>65</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>065 - Disclosure - QUARTERLY INFORMATION (UNAUDITED) (Details) - Schedule of quarterly information (Parentheticals)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/ScheduleofquarterlyinformationTable_Parentheticals</Role>
      <ShortName>QUARTERLY INFORMATION (UNAUDITED) (Details) - Schedule of quarterly information (Parentheticals)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/QUARTERLYINFORMATIONUNAUDITEDTables</ParentRole>
      <Position>66</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>066 - Disclosure - 401(k) PLAN (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/401kPLANDetails</Role>
      <ShortName>401(k) PLAN (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/401kPLAN</ParentRole>
      <Position>67</Position>
    </Report>
    <Report instance="form10k-29127_bdl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>067 - Disclosure - SUBSEQUENT EVENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://flanigans.net/role/SUBSEQUENTEVENTSDetails</Role>
      <ShortName>SUBSEQUENT EVENTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://flanigans.net/role/SUBSEQUENTEVENTS</ParentRole>
      <Position>68</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <Logs>
    <Log type="Warning">[ix-0514-Hidden-Fact-Eligible-For-Transform] WARN: 33 fact(s) appearing in ix:hidden were eligible for transformation: bdl:NetIncomePerShareDiluted, bdl:WeightedAverageCommonStockOutstandingDiluted, us-gaap:DebtInstrumentInterestRateStatedPercentage, us-gaap:DebtInstrumentMaturityDate, us-gaap:DebtInstrumentTerm, us-gaap:EarningsPerShareDiluted, us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding -  form10k-29127_bdl.htm 28627, 28628, 28629, 28630, 28645, 28646, 28647, 28648, 28649, 28650, 28651, 28652, 28653, 28654, 28655, 28656, 28658, 28661, 28662, 28663, 28664, 28665, 28666, 28667, 28668, 28669, 28670, 28671, 28672, 28673, 28674, 28675, 28676</Log>
  </Logs>
  <InputFiles>
    <File doctype="10-K" original="form10k-29127_bdl.htm">form10k-29127_bdl.htm</File>
    <File>bdl-20221001.xsd</File>
    <File>bdl-20221001_cal.xml</File>
    <File>bdl-20221001_def.xml</File>
    <File>bdl-20221001_lab.xml</File>
    <File>bdl-20221001_pre.xml</File>
    <File>ex10gg.htm</File>
    <File>ex10hh.htm</File>
    <File>ex31-1.htm</File>
    <File>ex31-2.htm</File>
    <File>ex32-1.htm</File>
    <File>ex32-2.htm</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="718">http://fasb.org/us-gaap/2022</BaseTaxonomy>
    <BaseTaxonomy items="36">http://xbrl.sec.gov/dei/2022</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
