2.4.0.84030 - Disclosure - Leases (Details)truefalsefalse1false USDfalsefalse$D2013Q2http://www.sec.gov/CIK0001048620duration2013-04-03T00:00:002013-07-02T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170RestaurantStandardhttp://www.gcfb.net/20130702restaurantgcfb0USDUSD$2false USDfalsefalse$D2012Q2http://www.sec.gov/CIK0001048620duration2012-03-28T00:00:002012-06-26T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDfalsefalse$D2013Q2YTDhttp://www.sec.gov/CIK0001048620duration2012-12-26T00:00:002013-07-02T00:00:00PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170RestaurantStandardhttp://www.gcfb.net/20130702restaurantgcfb0USDUSD$4false USDfalsefalse$D2012Q2YTDhttp://www.sec.gov/CIK0001048620duration2011-12-28T00:00:002012-06-26T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$5false USDtruefalse$D2012Q2_M06_CapitalAdditionsMember_IndianapolisIndianaLeaseMemberhttp://www.sec.gov/CIK0001048620duration2012-06-01T00:00:002012-06-30T00:00:00falsefalseConstruction of Granite City restaurantus-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CapitalAdditionsMemberus-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxisexplicitMemberfalsefalseIndianapolis, Indiana leaseus-gaap_PartiesToContractualArrangementAxisxbrldihttp://xbrl.org/2006/xbrldigcfb_IndianapolisIndianaLeaseMemberus-gaap_PartiesToContractualArrangementAxisexplicitMemberItemStandardhttp://www.gcfb.net/20130702itemgcfb0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$6false USDtruefalse$D2013Q2YTD_CapitalAdditionsMember_IndianapolisIndianaLeaseMemberhttp://www.sec.gov/CIK0001048620duration2012-12-26T00:00:002013-07-02T00:00:00falsefalseConstruction of Granite City restaurantus-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CapitalAdditionsMemberus-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxisexplicitMemberfalsefalseIndianapolis, Indiana leaseus-gaap_PartiesToContractualArrangementAxisxbrldihttp://xbrl.org/2006/xbrldigcfb_IndianapolisIndianaLeaseMemberus-gaap_PartiesToContractualArrangementAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$7false USDtruefalse$D2012Q1_M02_GraniteCityRestaurantInFranklinTennesseeMemberhttp://www.sec.gov/CIK0001048620duration2012-02-01T00:00:002012-02-29T00:00:00falsefalseGranite City restaurant in Franklin, Tennesseeus-gaap_SaleLeasebackTransactionDescriptionAxisxbrldihttp://xbrl.org/2006/xbrldigcfb_GraniteCityRestaurantInFranklinTennesseeMemberus-gaap_SaleLeasebackTransactionDescriptionAxisexplicitMemberItemStandardhttp://www.gcfb.net/20130702itemgcfb0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$8false USDtruefalse$I2013Q2_GraniteCityRestaurantInFranklinTennesseeMemberhttp://www.sec.gov/CIK0001048620instant2013-07-02T00:00:000001-01-01T00:00:00falsefalseGranite City restaurant in Franklin, Tennesseeus-gaap_SaleLeasebackTransactionDescriptionAxisxbrldihttp://xbrl.org/2006/xbrldigcfb_GraniteCityRestaurantInFranklinTennesseeMemberus-gaap_SaleLeasebackTransactionDescriptionAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$9false truefalseD2013Q2YTD_GraniteCityRestaurantInFranklinTennesseeMember_MinimumMemberhttp://www.sec.gov/CIK0001048620duration2012-12-26T00:00:002013-07-02T00:00:00falsefalseGranite City restaurant in Franklin, Tennesseeus-gaap_SaleLeasebackTransactionDescriptionAxisxbrldihttp://xbrl.org/2006/xbrldigcfb_GraniteCityRestaurantInFranklinTennesseeMemberus-gaap_SaleLeasebackTransactionDescriptionAxisexplicitMemberfalsefalseMinimumus-gaap_RangeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MinimumMemberus-gaap_RangeAxisexplicitMember10false truefalseD2013Q2YTD_GraniteCityRestaurantInFranklinTennesseeMember_MaximumMemberhttp://www.sec.gov/CIK0001048620duration2012-12-26T00:00:002013-07-02T00:00:00falsefalseGranite City restaurant in Franklin, Tennesseeus-gaap_SaleLeasebackTransactionDescriptionAxisxbrldihttp://xbrl.org/2006/xbrldigcfb_GraniteCityRestaurantInFranklinTennesseeMemberus-gaap_SaleLeasebackTransactionDescriptionAxisexplicitMemberfalsefalseMaximumus-gaap_RangeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MaximumMemberus-gaap_RangeAxisexplicitMember11false truefalseI2013Q2_YearOfMaturity2020Memberhttp://www.sec.gov/CIK0001048620instant2013-07-02T00:00:000001-01-01T00:00:00falsefalse2020gcfb_CapitalLeaseYearOfMaturityAxisxbrldihttp://xbrl.org/2006/xbrldigcfb_YearOfMaturity2020Membergcfb_CapitalLeaseYearOfMaturityAxisexplicitMemberLeaseStandardhttp://www.gcfb.net/20130702leasegcfb012false truefalseI2013Q2_YearOfMaturity2022Memberhttp://www.sec.gov/CIK0001048620instant2013-07-02T00:00:000001-01-01T00:00:00falsefalse2022gcfb_CapitalLeaseYearOfMaturityAxisxbrldihttp://xbrl.org/2006/xbrldigcfb_YearOfMaturity2022Membergcfb_CapitalLeaseYearOfMaturityAxisexplicitMemberLeaseStandardhttp://www.gcfb.net/20130702leasegcfb013false truefalseI2013Q2_YearOfMaturity2023Memberhttp://www.sec.gov/CIK0001048620instant2013-07-02T00:00:000001-01-01T00:00:00falsefalse2023gcfb_CapitalLeaseYearOfMaturityAxisxbrldihttp://xbrl.org/2006/xbrldigcfb_YearOfMaturity2023Membergcfb_CapitalLeaseYearOfMaturityAxisexplicitMemberLeaseStandardhttp://www.gcfb.net/20130702leasegcfb014false truefalseI2013Q2_YearOfMaturity2024Memberhttp://www.sec.gov/CIK0001048620instant2013-07-02T00:00:000001-01-01T00:00:00falsefalse2024gcfb_CapitalLeaseYearOfMaturityAxisxbrldihttp://xbrl.org/2006/xbrldigcfb_YearOfMaturity2024Membergcfb_CapitalLeaseYearOfMaturityAxisexplicitMemberLeaseStandardhttp://www.gcfb.net/20130702leasegcfb015false truefalseI2013Q2_YearOfMaturity2026Memberhttp://www.sec.gov/CIK0001048620instant2013-07-02T00:00:000001-01-01T00:00:00falsefalse2026gcfb_CapitalLeaseYearOfMaturityAxisxbrldihttp://xbrl.org/2006/xbrldigcfb_YearOfMaturity2026Membergcfb_CapitalLeaseYearOfMaturityAxisexplicitMemberLeaseStandardhttp://www.gcfb.net/20130702leasegcfb016false truefalseI2013Q2_YearOfMaturity2027Memberhttp://www.sec.gov/CIK0001048620instant2013-07-02T00:00:000001-01-01T00:00:00falsefalse2027gcfb_CapitalLeaseYearOfMaturityAxisxbrldihttp://xbrl.org/2006/xbrldigcfb_YearOfMaturity2027Membergcfb_CapitalLeaseYearOfMaturityAxisexplicitMemberLeaseStandardhttp://www.gcfb.net/20130702leasegcfb017false truefalseI2013Q2_YearOfMaturity2030Memberhttp://www.sec.gov/CIK0001048620instant2013-07-02T00:00:000001-01-01T00:00:00falsefalse2030gcfb_CapitalLeaseYearOfMaturityAxisxbrldihttp://xbrl.org/2006/xbrldigcfb_YearOfMaturity2030Membergcfb_CapitalLeaseYearOfMaturityAxisexplicitMemberLeaseStandardhttp://www.gcfb.net/20130702leasegcfb01true 3us-gaap_CapitalLeasedAssetsLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Capital leases2false 4us-gaap_CapitalLeasedAssetsNumberOfUnitsus-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse2323falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse2323falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11truefalsefalse11falsefalsefalse12truefalsefalse11falsefalsefalse13truefalsefalse33falsefalsefalse14truefalsefalse22falsefalsefalse15truefalsefalse55falsefalsefalse16truefalsefalse44falsefalsefalse17truefalsefalse77falsefalsefalsexbrli:decimalItemTypedecimalThe number of units (items of property) under capital lease arrangements.No definition available.false256Number of restaurants operated under capital lease agreements3false 4gcfb_OperatingLeasesMinimumFairValueOfLandAsPercentageOfTotalFairValueOfLeasegcfb_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsetruefalse00falsefalsefalse2falsetruefalse00falsefalsefalse3truetruefalse0.250.25falsefalsefalse4falsetruefalse00falsefalsefalse5falsetruefalse00falsefalsefalse6falsetruefalse00falsefalsefalse7falsetruefalse00falsefalsefalse8falsetruefalse00falsefalsefalse9falsetruefalse00falsefalsefalse10falsetruefalse00falsefalsefalse11falsetruefalse00falsefalsefalse12falsetruefalse00falsefalsefalse13falsetruefalse00falsefalsefalse14falsetruefalse00falsefalsefalse15falsetruefalse00falsefalsefalse16falsetruefalse00falsefalsefalse17falsetruefalse00falsefalsefalsenum:percentItemTypepureRepresents the minimum fair value of land as a percentage of total fair value of lease.No definition available.false0Minimum fair value of land as a percentage of total fair value of lease4false 4us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse2550000025500000USD$falsetruefalse2falsefalsefalse00falsefalsefalse3truefalsefalse2550000025500000USD$falsetruefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe total gross amount less the charge for the use of the long-lived depreciable assets subject to a lease meeting the criteria for capitalization.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 false2Assets held under capital leases, net5true 4gcfb_ScheduleOfOperatingLeaseAndSaleLeasebackTransactionAbstractgcfb_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Operating leases6false 5gcfb_SaleLeasebackTransactionTermOfLeasegcfb_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse0015 yearsfalsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalsexbrli:durationItemTypenaRepresents the period for which an asset has been leased in a sale leaseback transaction.No definition available.false0Term of lease agreement7false 5us-gaap_PropertyPlantAndEquipmentUsefulLifeus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse0025 yearsfalsefalsefalse10falsefalsefalse0030 yearsfalsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalsexbrli:durationItemTypenaUseful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.No definition available.false0Life of restaurant8false 5gcfb_SaleLeasebackTransactionTenantImprovementAllowancegcfb_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse11000001100000falsefalsefalse6falsefalsefalse00falsefalsefalse7truefalsefalse17500001750000falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryRepresents information pertaining to the tenant improvement allowance to be received by the entity in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller to be recognized in future periods.No definition available.false2Tenant improvement allowance9false 5gcfb_SaleLeasebackTransactionDeferredLossgcfb_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8truefalsefalse17000001700000falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of loss recorded in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller to be recognized in future periods.No definition available.false2Deferred loss on sale leaseback10false 5gcfb_SaleLeasebackTransactionNumberOfAdditionalFiveYearPeriodsAvailableForExtensiongcfb_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7truefalsefalse22falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalsexbrli:integerItemTypeintegerRepresents the number of additional five-year periods available for extension in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller to be recognized in future periods.No definition available.false256Number of additional five-year periods available for extension11false 5gcfb_SaleLeasebackTransactionNumberOfYearsAvailableInPeriodOfExtensiongcfb_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse005 yearsfalsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalsexbrli:durationItemTypenaRepresents the number of years available in the period of extension in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller to be recognized in future periods.No definition available.false0Number of years available in period of extension12false 5gcfb_SaleLeasebackTransactionStartingAnnualBaseRentgcfb_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7truefalsefalse158000158000falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryRepresents the amount of starting annual base rent payable in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller to be recognized in future periods.No definition available.false2Starting annual base rent13false 5gcfb_OperatingLeaseTermgcfb_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse0010 yearsfalsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalsexbrli:durationItemTypenaRepresents the period for which an asset has been leased in an operating lease transaction.No definition available.false0Operating lease term14false 4gcfb_PreOpeningCostsThroughRentHolidayPeriodgcfb_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6truefalsefalse150000150000falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryRepresents the aggregate pre-opening costs recorded through the build out or rent holiday period.No definition available.false2Pre-opening costs through the build out or rent holiday period15false 4us-gaap_PreOpeningCostsus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse185631185631falsefalsefalse2truefalsefalse514342514342falsefalsefalse3truefalsefalse623966623966falsefalsefalse4truefalsefalse748831748831falsefalsefalse5falsefalsefalse00falsefalsefalse6truefalsefalse103000103000falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryExpenditures associated with opening new locations which are noncapital in nature and expensed as incurred.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 false2Pre-opening16false 4gcfb_OperatingLeaseMaximumNumberOfAdditionalLeaseTermsgcfb_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse22falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalsexbrli:integerItemTypeintegerRepresents the maximum number of additional lease terms for which the lease may be extended.No definition available.false256Maximum number of additional lease terms for which the lease may be extended17false 4gcfb_OperatingLeaseAdditionalTermForWhichLeaseMayBeExtendedgcfb_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse005 yearsfalsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalsexbrli:durationItemTypenaRepresents the additional terms for which the lease may be extended.No definition available.false0Additional terms for which the lease may be extended18false 4gcfb_OperatingLeaseAnnualBaseRentgcfb_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse210000210000USD$falsetruefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalse17falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryRepresents the annual payments to be made as per the lease agreement entered into by the entity.No definition available.false2Annual base rentfalseLeases (Details) (USD $)NoRoundingUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.gcfb.net/role/DisclosureLeasesDetails1718