3.5.0.2 html 107 195 1 false 32 0 false 7 false false R1.htm 100000 - Document - Document and Entity Information Sheet http://www.jalexanders.com/20161002/taxonomy/role/DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 100010 - Statement - Condensed Consolidated Balance Sheets (Unaudited) Sheet http://www.jalexanders.com/20161002/taxonomy/role/StatementCondensedConsolidatedBalanceSheetsUnaudited Condensed Consolidated Balance Sheets (Unaudited) Statements 2 false false R3.htm 100020 - Statement - Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) Sheet http://www.jalexanders.com/20161002/taxonomy/role/StatementCondensedConsolidatedBalanceSheetsUnauditedParenthetical Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) Statements 3 false false R4.htm 100030 - Statement - Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) Sheet http://www.jalexanders.com/20161002/taxonomy/role/StatementCondensedConsolidatedStatementsOfOperationsAndComprehensiveIncomeLossUnaudited Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) Statements 4 false false R5.htm 100040 - Statement - Condensed Consolidated Statement of Stockholders' Equity (Unaudited) Sheet http://www.jalexanders.com/20161002/taxonomy/role/StatementCondensedConsolidatedStatementOfStockholdersEquityUnaudited Condensed Consolidated Statement of Stockholders' Equity (Unaudited) Statements 5 false false R6.htm 100050 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) Sheet http://www.jalexanders.com/20161002/taxonomy/role/StatementCondensedConsolidatedStatementsOfCashFlowsUnaudited Condensed Consolidated Statements of Cash Flows (Unaudited) Statements 6 false false R7.htm 100060 - Disclosure - Organization and Business Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureOrganizationAndBusiness Organization and Business Notes 7 false false R8.htm 100070 - Disclosure - Basis of Presentation Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureBasisOfPresentation Basis of Presentation Notes 8 false false R9.htm 100080 - Disclosure - Earnings per Share Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureEarningsPerShare Earnings per Share Notes 9 false false R10.htm 100090 - Disclosure - Income Taxes Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureIncomeTaxes Income Taxes Notes 10 false false R11.htm 100100 - Disclosure - Commitment and Contingencies Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureCommitmentAndContingencies Commitment and Contingencies Notes 11 false false R12.htm 100110 - Disclosure - Fair Value Measurements Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureFairValueMeasurements Fair Value Measurements Notes 12 false false R13.htm 100120 - Disclosure - Recent Accounting Pronouncements Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureRecentAccountingPronouncements Recent Accounting Pronouncements Notes 13 false false R14.htm 100130 - Disclosure - Related Party Transactions Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureRelatedPartyTransactions Related Party Transactions Notes 14 false false R15.htm 100140 - Disclosure - Debt Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureDebt Debt Notes 15 false false R16.htm 100150 - Disclosure - Basis of Presentation (Policies) Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureBasisOfPresentationPolicies Basis of Presentation (Policies) Policies http://www.jalexanders.com/20161002/taxonomy/role/DisclosureRecentAccountingPronouncements 16 false false R17.htm 100160 - Disclosure - Earnings per Share (Tables) Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureEarningsPerShareTables Earnings per Share (Tables) Tables http://www.jalexanders.com/20161002/taxonomy/role/DisclosureEarningsPerShare 17 false false R18.htm 100170 - Disclosure - Fair Value Measurements (Tables) Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureFairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://www.jalexanders.com/20161002/taxonomy/role/DisclosureFairValueMeasurements 18 false false R19.htm 100180 - Disclosure - Organization and Business - Additional Information (Details) Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureOrganizationAndBusinessAdditionalInformationDetails Organization and Business - Additional Information (Details) Details 19 false false R20.htm 100190 - Disclosure - Basis of Presentation - Additional Information (Details) Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureBasisOfPresentationAdditionalInformationDetails Basis of Presentation - Additional Information (Details) Details 20 false false R21.htm 100200 - Disclosure - Earnings per Share - Computation of Basic and Diluted Earnings (Loss) per Share (Details) Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureEarningsPerShareComputationOfBasicAndDilutedEarningsLossPerShareDetails Earnings per Share - Computation of Basic and Diluted Earnings (Loss) per Share (Details) Details 21 false false R22.htm 100210 - Disclosure - Earnings per Share - Additional Information (Details) Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureEarningsPerShareAdditionalInformationDetails Earnings per Share - Additional Information (Details) Details 22 false false R23.htm 100220 - Disclosure - Income Taxes - Additional Information (Details) Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureIncomeTaxesAdditionalInformationDetails Income Taxes - Additional Information (Details) Details 23 false false R24.htm 100230 - Disclosure - Commitments and Contingencies - Additional Information (Details) Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureCommitmentsAndContingenciesAdditionalInformationDetails Commitments and Contingencies - Additional Information (Details) Details 24 false false R25.htm 100240 - Disclosure - Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureFairValueMeasurementsScheduleOfAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) Details 25 false false R26.htm 100250 - Disclosure - Fair Value Measurements - Schedule of Unrealized Gains and Losses on Investments Held in Rabbi Trust (Details) Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureFairValueMeasurementsScheduleOfUnrealizedGainsAndLossesOnInvestmentsHeldInRabbiTrustDetails Fair Value Measurements - Schedule of Unrealized Gains and Losses on Investments Held in Rabbi Trust (Details) Details 26 false false R27.htm 100260 - Disclosure - Fair Value Measurements - Additional Information (Details) Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureFairValueMeasurementsAdditionalInformationDetails Fair Value Measurements - Additional Information (Details) Details 27 false false R28.htm 100270 - Disclosure - Recent Accounting Pronouncements - Additional Information (Details) Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureRecentAccountingPronouncementsAdditionalInformationDetails Recent Accounting Pronouncements - Additional Information (Details) Details 28 false false R29.htm 100280 - Disclosure - Related Party Transactions - Additional Information (Details) Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureRelatedPartyTransactionsAdditionalInformationDetails Related Party Transactions - Additional Information (Details) Details 29 false false R30.htm 100290 - Disclosure - Debt - Additional Information (Details) Sheet http://www.jalexanders.com/20161002/taxonomy/role/DisclosureDebtAdditionalInformationDetails Debt - Additional Information (Details) Details 30 false false All Reports Book All Reports jax-20161002.xml jax-20161002.xsd jax-20161002_cal.xml jax-20161002_def.xml jax-20161002_lab.xml jax-20161002_pre.xml true true