3.23.1 html 218 263 1 false 75 0 false 10 false false R1.htm 0000001 - Document - Cover Sheet http://fatbrands.com/role/Cover Cover Cover 1 false false R2.htm 0000002 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS Sheet http://fatbrands.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS CONDENSED CONSOLIDATED BALANCE SHEETS Statements 2 false false R3.htm 0000003 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) Sheet http://fatbrands.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) Statements 3 false false R4.htm 0000004 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS Sheet http://fatbrands.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS Statements 4 false false R5.htm 0000005 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS??? DEFICIT Sheet http://fatbrands.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSDEFICIT CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS??? DEFICIT Statements 5 false false R6.htm 0000006 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://fatbrands.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS Statements 6 false false R7.htm 0000007 - Disclosure - ORGANIZATION AND RELATIONSHIPS Sheet http://fatbrands.com/role/ORGANIZATIONANDRELATIONSHIPS ORGANIZATION AND RELATIONSHIPS Notes 7 false false R8.htm 0000008 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Sheet http://fatbrands.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIES SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Notes 8 false false R9.htm 0000009 - Disclosure - REFRANCHISING Sheet http://fatbrands.com/role/REFRANCHISING REFRANCHISING Notes 9 false false R10.htm 0000010 - Disclosure - PROPERTY AND EQUIPMENT, NET Sheet http://fatbrands.com/role/PROPERTYANDEQUIPMENTNET PROPERTY AND EQUIPMENT, NET Notes 10 false false R11.htm 0000011 - Disclosure - GOODWILL AND OTHER INTANGIBLE ASSETS, NET Sheet http://fatbrands.com/role/GOODWILLANDOTHERINTANGIBLEASSETSNET GOODWILL AND OTHER INTANGIBLE ASSETS, NET Notes 11 false false R12.htm 0000012 - Disclosure - INCOME TAXES Sheet http://fatbrands.com/role/INCOMETAXES INCOME TAXES Notes 12 false false R13.htm 0000013 - Disclosure - LEASES Sheet http://fatbrands.com/role/LEASES LEASES Notes 13 false false R14.htm 0000014 - Disclosure - DEBT Sheet http://fatbrands.com/role/DEBT DEBT Notes 14 false false R15.htm 0000015 - Disclosure - REDEEMABLE PREFERRED STOCK Sheet http://fatbrands.com/role/REDEEMABLEPREFERREDSTOCK REDEEMABLE PREFERRED STOCK Notes 15 false false R16.htm 0000016 - Disclosure - SHARE-BASED COMPENSATION Sheet http://fatbrands.com/role/SHAREBASEDCOMPENSATION SHARE-BASED COMPENSATION Notes 16 false false R17.htm 0000017 - Disclosure - WARRANTS Sheet http://fatbrands.com/role/WARRANTS WARRANTS Notes 17 false false R18.htm 0000018 - Disclosure - COMMON STOCK Sheet http://fatbrands.com/role/COMMONSTOCK COMMON STOCK Notes 18 false false R19.htm 0000019 - Disclosure - COMMITMENTS AND CONTINGENCIES Sheet http://fatbrands.com/role/COMMITMENTSANDCONTINGENCIES COMMITMENTS AND CONTINGENCIES Notes 19 false false R20.htm 0000020 - Disclosure - GEOGRAPHIC INFORMATION Sheet http://fatbrands.com/role/GEOGRAPHICINFORMATION GEOGRAPHIC INFORMATION Notes 20 false false R21.htm 0000021 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) Sheet http://fatbrands.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) Policies 21 false false R22.htm 0000022 - Disclosure - REFRANCHISING (Tables) Sheet http://fatbrands.com/role/REFRANCHISINGTables REFRANCHISING (Tables) Tables http://fatbrands.com/role/REFRANCHISING 22 false false R23.htm 0000023 - Disclosure - PROPERTY AND EQUIPMENT, NET (Tables) Sheet http://fatbrands.com/role/PROPERTYANDEQUIPMENTNETTables PROPERTY AND EQUIPMENT, NET (Tables) Tables http://fatbrands.com/role/PROPERTYANDEQUIPMENTNET 23 false false R24.htm 0000024 - Disclosure - GOODWILL AND OTHER INTANGIBLE ASSETS, NET (Tables) Sheet http://fatbrands.com/role/GOODWILLANDOTHERINTANGIBLEASSETSNETTables GOODWILL AND OTHER INTANGIBLE ASSETS, NET (Tables) Tables http://fatbrands.com/role/GOODWILLANDOTHERINTANGIBLEASSETSNET 24 false false R25.htm 0000025 - Disclosure - INCOME TAXES (Tables) Sheet http://fatbrands.com/role/INCOMETAXESTables INCOME TAXES (Tables) Tables http://fatbrands.com/role/INCOMETAXES 25 false false R26.htm 0000026 - Disclosure - LEASES (Tables) Sheet http://fatbrands.com/role/LEASESTables LEASES (Tables) Tables http://fatbrands.com/role/LEASES 26 false false R27.htm 0000027 - Disclosure - DEBT (Tables) Sheet http://fatbrands.com/role/DEBTTables DEBT (Tables) Tables http://fatbrands.com/role/DEBT 27 false false R28.htm 0000028 - Disclosure - WARRANTS (Tables) Sheet http://fatbrands.com/role/WARRANTSTables WARRANTS (Tables) Tables http://fatbrands.com/role/WARRANTS 28 false false R29.htm 0000029 - Disclosure - GEOGRAPHIC INFORMATION (Tables) Sheet http://fatbrands.com/role/GEOGRAPHICINFORMATIONTables GEOGRAPHIC INFORMATION (Tables) Tables http://fatbrands.com/role/GEOGRAPHICINFORMATION 29 false false R30.htm 0000030 - Disclosure - ORGANIZATION AND RELATIONSHIPS (Details) Sheet http://fatbrands.com/role/ORGANIZATIONANDRELATIONSHIPSDetails ORGANIZATION AND RELATIONSHIPS (Details) Details http://fatbrands.com/role/ORGANIZATIONANDRELATIONSHIPS 30 false false R31.htm 0000031 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) Sheet http://fatbrands.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESNarrativeDetails SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) Details 31 false false R32.htm 0000032 - Disclosure - REFRANCHISING - Schedule of Remaining Assets Classified as Held for Sale (Details) Sheet http://fatbrands.com/role/REFRANCHISINGScheduleofRemainingAssetsClassifiedasHeldforSaleDetails REFRANCHISING - Schedule of Remaining Assets Classified as Held for Sale (Details) Details 32 false false R33.htm 0000033 - Disclosure - REFRANCHISING - Narrative (Details) Sheet http://fatbrands.com/role/REFRANCHISINGNarrativeDetails REFRANCHISING - Narrative (Details) Details 33 false false R34.htm 0000034 - Disclosure - REFRANCHISING - Schedule of Operating Results of Refranchising Program (Details) Sheet http://fatbrands.com/role/REFRANCHISINGScheduleofOperatingResultsofRefranchisingProgramDetails REFRANCHISING - Schedule of Operating Results of Refranchising Program (Details) Details 34 false false R35.htm 0000035 - Disclosure - PROPERTY AND EQUIPMENT, NET - Carrying Value of Property and Equipment (Details) Sheet http://fatbrands.com/role/PROPERTYANDEQUIPMENTNETCarryingValueofPropertyandEquipmentDetails PROPERTY AND EQUIPMENT, NET - Carrying Value of Property and Equipment (Details) Details 35 false false R36.htm 0000036 - Disclosure - PROPERTY AND EQUIPMENT, NET - Narrative (Details) Sheet http://fatbrands.com/role/PROPERTYANDEQUIPMENTNETNarrativeDetails PROPERTY AND EQUIPMENT, NET - Narrative (Details) Details 36 false false R37.htm 0000037 - Disclosure - GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Changes in Carrying Value of Goodwill and Other Intangible Assets (Details) Sheet http://fatbrands.com/role/GOODWILLANDOTHERINTANGIBLEASSETSNETChangesinCarryingValueofGoodwillandOtherIntangibleAssetsDetails GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Changes in Carrying Value of Goodwill and Other Intangible Assets (Details) Details 37 false false R38.htm 0000038 - Disclosure - GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Gross Carrying Value and Accumulated Amortization (Details) Sheet http://fatbrands.com/role/GOODWILLANDOTHERINTANGIBLEASSETSNETGrossCarryingValueandAccumulatedAmortizationDetails GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Gross Carrying Value and Accumulated Amortization (Details) Details 38 false false R39.htm 0000039 - Disclosure - GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Narrative (Details) Sheet http://fatbrands.com/role/GOODWILLANDOTHERINTANGIBLEASSETSNETNarrativeDetails GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Narrative (Details) Details 39 false false R40.htm 0000040 - Disclosure - GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Expected Future Amortization (Details) Sheet http://fatbrands.com/role/GOODWILLANDOTHERINTANGIBLEASSETSNETExpectedFutureAmortizationDetails GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Expected Future Amortization (Details) Details 40 false false R41.htm 0000041 - Disclosure - INCOME TAXES - Schedule of Provision for Income Taxes (Details) Sheet http://fatbrands.com/role/INCOMETAXESScheduleofProvisionforIncomeTaxesDetails INCOME TAXES - Schedule of Provision for Income Taxes (Details) Details 41 false false R42.htm 0000042 - Disclosure - LEASES - Narrative (Details) Sheet http://fatbrands.com/role/LEASESNarrativeDetails LEASES - Narrative (Details) Details 42 false false R43.htm 0000043 - Disclosure - LEASES - Summary of Operating Lease Right of Use Assets and Operating Lease Liabilities (Details) Sheet http://fatbrands.com/role/LEASESSummaryofOperatingLeaseRightofUseAssetsandOperatingLeaseLiabilitiesDetails LEASES - Summary of Operating Lease Right of Use Assets and Operating Lease Liabilities (Details) Details 43 false false R44.htm 0000044 - Disclosure - LEASES - Schedule of Contractual Future Maturities (Details) Sheet http://fatbrands.com/role/LEASESScheduleofContractualFutureMaturitiesDetails LEASES - Schedule of Contractual Future Maturities (Details) Details 44 false false R45.htm 0000045 - Disclosure - LEASES - Summary of Supplemental Cash Flow Information (Details) Sheet http://fatbrands.com/role/LEASESSummaryofSupplementalCashFlowInformationDetails LEASES - Summary of Supplemental Cash Flow Information (Details) Details 45 false false R46.htm 0000046 - Disclosure - DEBT - Schedule of Securitization of Notes (Details) Notes http://fatbrands.com/role/DEBTScheduleofSecuritizationofNotesDetails DEBT - Schedule of Securitization of Notes (Details) Details 46 false false R47.htm 0000047 - Disclosure - DEBT - Narrative (Details) Sheet http://fatbrands.com/role/DEBTNarrativeDetails DEBT - Narrative (Details) Details 47 false false R48.htm 0000048 - Disclosure - REDEEMABLE PREFERRED STOCK - Narrative (Details) Sheet http://fatbrands.com/role/REDEEMABLEPREFERREDSTOCKNarrativeDetails REDEEMABLE PREFERRED STOCK - Narrative (Details) Details 48 false false R49.htm 0000049 - Disclosure - SHARE-BASED COMPENSATION - Narrative (Details) Sheet http://fatbrands.com/role/SHAREBASEDCOMPENSATIONNarrativeDetails SHARE-BASED COMPENSATION - Narrative (Details) Details 49 false false R50.htm 0000050 - Disclosure - WARRANTS - Summary of Warrant Activity (Details) Sheet http://fatbrands.com/role/WARRANTSSummaryofWarrantActivityDetails WARRANTS - Summary of Warrant Activity (Details) Details 50 false false R51.htm 0000051 - Disclosure - WARRANTS - Narrative (Details) Sheet http://fatbrands.com/role/WARRANTSNarrativeDetails WARRANTS - Narrative (Details) Details 51 false false R52.htm 0000052 - Disclosure - COMMON STOCK - Narrative (Details) Sheet http://fatbrands.com/role/COMMONSTOCKNarrativeDetails COMMON STOCK - Narrative (Details) Details 52 false false R53.htm 0000053 - Disclosure - COMMITMENTS AND CONTINGENCIES - Narrative (Details) Sheet http://fatbrands.com/role/COMMITMENTSANDCONTINGENCIESNarrativeDetails COMMITMENTS AND CONTINGENCIES - Narrative (Details) Details 53 false false R54.htm 0000054 - Disclosure - GEOGRAPHIC INFORMATION - Schedule of Revenues by Geographic Area (Details) Sheet http://fatbrands.com/role/GEOGRAPHICINFORMATIONScheduleofRevenuesbyGeographicAreaDetails GEOGRAPHIC INFORMATION - Schedule of Revenues by Geographic Area (Details) Details 54 false false All Reports Book All Reports [dq-0540-CurrentFiscalYearEndDate-Registrant-Value] In submission type 10-Q, CurrentFiscalYearEndDate value "--12-31", should match the Entity Registrant Fiscal Year End Date "12/26" on record within EDGAR. fat-20230326.htm 4 [ix-0514-Hidden-Fact-Eligible-For-Transform] WARN: 2 fact(s) appearing in ix:hidden were eligible for transformation: dei:EntityRegistrantName, us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage - fat-20230326.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:CommonStocksIncludingAdditionalPaidInCapital has a value of -27183000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:CommonStocksIncludingAdditionalPaidInCapital fact are: Context: i9e99640d464b44f8960110f37c0ffab4_I20230326, Unit: usd, Rule Element Id: 513. fat-20230326.htm 4 [dqc-0015-Negative-Values] Fact us-gaap:CommonStocksIncludingAdditionalPaidInCapital has a value of -26015000 which is less than zero. This element should not have a negative value. The preparer should consider if the value is input correctly for this assertion and, after considering the appropriateness of the input, if incorrect, input the amount as a positive (i.e., absolute) value and provide a negated label. The properties of this us-gaap:CommonStocksIncludingAdditionalPaidInCapital fact are: Context: iac9053a088164f63a6caee4a2d2a38d7_I20221225, Unit: usd, Rule Element Id: 513. fat-20230326.htm 4 fat-20230326.htm a1q23form10-qexx311.htm a1q23form10-qexx312.htm a1q23form10-qexx321.htm fat-20230326.xsd fat-20230326_cal.xml fat-20230326_def.xml fat-20230326_lab.xml fat-20230326_pre.xml fat-20230326_g1.jpg http://fasb.org/us-gaap/2023 http://xbrl.sec.gov/dei/2023 true true