3.10.0.1 html 1261 614 1 true 364 0 false 5 false false R1.htm 000001 - Document - Document and Entity Information Sheet http://www.navios.com/role/DocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 001002 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS Sheet http://www.navios.com/role/ConsolidatedBalanceSheets CONDENSED CONSOLIDATED BALANCE SHEETS Statements 2 false false R3.htm 001003 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) Sheet http://www.navios.com/role/ConsolidatedBalanceSheetsParentheticals CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) Statements 3 false false R4.htm 001004 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS)/INCOME Sheet http://www.navios.com/role/ConsolidatedStatementsOfComprehensiveIncome CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS)/INCOME Statements 4 false false R5.htm 001006 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY Sheet http://www.navios.com/role/ConsolidatedStatementsOfChangesInEquity CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY Statements 5 false false R6.htm 002005 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://www.navios.com/role/ConsolidatedStatementsOfCashFlows CONSOLIDATED STATEMENTS OF CASH FLOWS Statements 6 false false R7.htm 100007 - Disclosure - Description of Business Sheet http://www.navios.com/role/DisclosureDescriptionOfBusiness Description of Business Notes 7 false false R8.htm 100008 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.navios.com/role/DisclosureSummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 8 false false R9.htm 100009 - Disclosure - Cash and Cash Equivalents Sheet http://www.navios.com/role/DisclosureCashAndCashEquivalents Cash and Cash Equivalents Notes 9 false false R10.htm 100010 - Disclosure - Accounts Receivable, Net Sheet http://www.navios.com/role/DisclosureAccountsReceivablesNet Accounts Receivable, Net Notes 10 false false R11.htm 100011 - Disclosure - Prepaid Expenses and Other Current Assets Sheet http://www.navios.com/role/DisclosurePrepaidExpensesandOtherCurrentAssets Prepaid Expenses and Other Current Assets Notes 11 false false R12.htm 100012 - Disclosure - Vessels, Port Terminal and Other Fixed Assets, Net Sheet http://www.navios.com/role/DisclosureVesselsPortTerminalsandOtherFixedAssets Vessels, Port Terminal and Other Fixed Assets, Net Notes 12 false false R13.htm 100013 - Disclosure - Intangible Assets Other Than Goodwill Sheet http://www.navios.com/role/DisclosureIntangibleAssetsOtherThanGoodwill Intangible Assets Other Than Goodwill Notes 13 false false R14.htm 100014 - Disclosure - Accrued Expenses and Other Liabilities Sheet http://www.navios.com/role/DisclosureAccruedExpenses Accrued Expenses and Other Liabilities Notes 14 false false R15.htm 100015 - Disclosure - Borrowings Sheet http://www.navios.com/role/DisclosureBorrowings Borrowings Notes 15 false false R16.htm 100016 - Disclosure - Fair Value of Financial Instruments Sheet http://www.navios.com/role/DisclosureDerivativesandFairValueofFinancialInstruments Fair Value of Financial Instruments Notes 16 false false R17.htm 100017 - Disclosure - Employee Benefit Plans Sheet http://www.navios.com/20180930/role/DisclosureEmployeeBenefitPlansLevelI Employee Benefit Plans Notes 17 false false R18.htm 100018 - Disclosure - Commitments and Contingencies Sheet http://www.navios.com/role/DisclosureCommitmentsandContingencies Commitments and Contingencies Notes 18 false false R19.htm 100019 - Disclosure - Leases Sheet http://www.navios.com/role/DisclosureLeases Leases Notes 19 false false R20.htm 100020 - Disclosure - Transactions with Related Parties Sheet http://www.navios.com/role/DisclosureTransactionswithRelatedParties Transactions with Related Parties Notes 20 false false R21.htm 100021 - Disclosure - Preferred and Common Stock Sheet http://www.navios.com/role/DisclosurePreferredandCommonStock Preferred and Common Stock Notes 21 false false R22.htm 100022 - Disclosure - Interest Expense and Finance Cost Sheet http://www.navios.com/role/DisclosureInterestExpenseandFinanceCostNet Interest Expense and Finance Cost Notes 22 false false R23.htm 100023 - Disclosure - Other Expense, Net Sheet http://www.navios.com/20180930/role/DisclosureOtherIncomeandExpense Other Expense, Net Notes 23 false false R24.htm 100024 - Disclosure - Segment Information Sheet http://www.navios.com/role/DisclosureSegmentInformation Segment Information Notes 24 false false R25.htm 100025 - Disclosure - Loss Per Common Share Sheet http://www.navios.com/role/DisclosureEarningsPerCommonShare Loss Per Common Share Notes 25 false false R26.htm 100026 - Disclosure - Income Taxes Sheet http://www.navios.com/role/DisclosureIncomeTaxes Income Taxes Notes 26 false false R27.htm 100030 - Disclosure - Investments in affiliates and available-for-sale securities Sheet http://www.navios.com/role/DisclosureInvestmentinAffiliates Investments in affiliates and available-for-sale securities Notes 27 false false R28.htm 100031 - Disclosure - Subsequent Events Sheet http://www.navios.com/role/DisclosureSubsequentEvents Subsequent Events Notes 28 false false R29.htm 20000033 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.navios.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.navios.com/role/DisclosureSummaryOfSignificantAccountingPolicies 29 false false R30.htm 300034 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://www.navios.com/role/DisclosureSummaryOfSignificantAcountingPoliciesTables Summary of Significant Accounting Policies (Tables) Tables http://www.navios.com/role/DisclosureSummaryOfSignificantAccountingPolicies 30 false false R31.htm 300035 - Disclosure - Cash and Cash Equivalents (Tables) Sheet http://www.navios.com/role/DisclosureCashandCashEquivalentsTables Cash and Cash Equivalents (Tables) Tables http://www.navios.com/role/DisclosureCashAndCashEquivalents 31 false false R32.htm 300036 - Disclosure - Accounts Receivable, Net (Tables) Sheet http://www.navios.com/role/DisclosureAccountsReceivablesNetTables Accounts Receivable, Net (Tables) Tables http://www.navios.com/role/DisclosureAccountsReceivablesNet 32 false false R33.htm 300037 - Disclosure - Prepaid Expenses and Other Current Assets (Tables) Sheet http://www.navios.com/role/DisclosurePrepaidExpensesandOtherCurrentAssetsTables Prepaid Expenses and Other Current Assets (Tables) Tables http://www.navios.com/role/DisclosurePrepaidExpensesandOtherCurrentAssets 33 false false R34.htm 300038 - Disclosure - Vessels, Port Terminal and Other Fixed Assets, Net (Tables) Sheet http://www.navios.com/role/DisclosureVesselsPortTerminalsandOtherFixedAssetsTables Vessels, Port Terminal and Other Fixed Assets, Net (Tables) Tables http://www.navios.com/role/DisclosureVesselsPortTerminalsandOtherFixedAssets 34 false false R35.htm 300039 - Disclosure - Intangible Assets Other Than Goodwill (Tables) Sheet http://www.navios.com/role/DisclosureIntangibleAssetsOtherThanGoodwillTables Intangible Assets Other Than Goodwill (Tables) Tables http://www.navios.com/role/DisclosureIntangibleAssetsOtherThanGoodwill 35 false false R36.htm 300040 - Disclosure - Accrued Expenses and Other Liabilities (Tables) Sheet http://www.navios.com/role/DisclosureAccruedExpensesTables Accrued Expenses and Other Liabilities (Tables) Tables http://www.navios.com/role/DisclosureAccruedExpenses 36 false false R37.htm 300041 - Disclosure - Borrowings (Tables) Sheet http://www.navios.com/role/DisclosureBorrowingsTables Borrowings (Tables) Tables http://www.navios.com/role/DisclosureBorrowings 37 false false R38.htm 300042 - Disclosure - Fair Value of Financial Instruments (Tables) Sheet http://www.navios.com/role/DisclosureDerivativesandFairValueofFinancialInstrumentsTables Fair Value of Financial Instruments (Tables) Tables http://www.navios.com/role/DisclosureDerivativesandFairValueofFinancialInstruments 38 false false R39.htm 300043 - Disclosure - Employee Benefit Plans (Tables) Sheet http://www.navios.com/role/DisclosureEmployeeBenefitPlansTables Employee Benefit Plans (Tables) Tables http://www.navios.com/20180930/role/DisclosureEmployeeBenefitPlansLevelI 39 false false R40.htm 300044 - Disclosure - Commitments and Contingencies (Tables) Sheet http://www.navios.com/20180930/role/DisclosureCommitmentsandContingenciesTables Commitments and Contingencies (Tables) Tables http://www.navios.com/role/DisclosureCommitmentsandContingencies 40 false false R41.htm 300045 - Disclosure - Leases (Tables) Sheet http://www.navios.com/role/DisclosureLeasesTables Leases (Tables) Tables http://www.navios.com/role/DisclosureLeases 41 false false R42.htm 300046 - Disclosure - Interest Expense and Finance Cost (Tables) Sheet http://www.navios.com/role/DisclosureInterestExpenseandFinanceCostNetTables Interest Expense and Finance Cost (Tables) Tables http://www.navios.com/role/DisclosureInterestExpenseandFinanceCostNet 42 false false R43.htm 300047 - Disclosure - Segment Information (Tables) Sheet http://www.navios.com/role/DisclosureSegmentInformationTables Segment Information (Tables) Tables http://www.navios.com/role/DisclosureSegmentInformation 43 false false R44.htm 300048 - Disclosure - Loss Per Common Share (Tables) Sheet http://www.navios.com/role/DisclosureEarningsPerCommonShareTables Loss Per Common Share (Tables) Tables http://www.navios.com/role/DisclosureEarningsPerCommonShare 44 false false R45.htm 300050 - Disclosure - Investment in affiliates and available-for-sale securities (Tables) Sheet http://www.navios.com/role/DisclosureInvestmentinAffiliatesTables Investment in affiliates and available-for-sale securities (Tables) Tables 45 false false R46.htm 400052 - Disclosure - Description of Business (Details) Sheet http://www.navios.com/role/DisclosureDescriptionofBusinessDetails Description of Business (Details) Details http://www.navios.com/role/DisclosureDescriptionOfBusiness 46 false false R47.htm 400054 - Disclosure - Description of Business - Related Parties - Navios Europe I and Navios Europe II (Details) Sheet http://www.navios.com/20180930/role/DescriptionOfBusinessRelatedPartiesNaviosEuropeIITableDetails Description of Business - Related Parties - Navios Europe I and Navios Europe II (Details) Details 47 false false R48.htm 400055 - Disclosure - Summary of Significant Accounting Policies - Subsidiaries (Table) (Details) Sheet http://www.navios.com/role/DisclosureSummaryofSignificantAccountingPoliciesDetails2 Summary of Significant Accounting Policies - Subsidiaries (Table) (Details) Details 48 false false R49.htm 400056 - Disclosure - Summary of Significant Accounting Policies - Depreciation Periods (Table) (Details) Sheet http://www.navios.com/role/DisclosureSummaryofSignificantAccountingPoliciesDetails3 Summary of Significant Accounting Policies - Depreciation Periods (Table) (Details) Details 49 false false R50.htm 400057 - Disclosure - Summary of Significant Accounting Policies - Amortization Periods (Table) (Details) Sheet http://www.navios.com/role/DisclosureSummaryofSignificantAccountingPoliciesDetails4 Summary of Significant Accounting Policies - Amortization Periods (Table) (Details) Details 50 false false R51.htm 400058 - Disclosure - Summary of Significant Account Policies, Restricted Cash (Table) (Details) Sheet http://www.navios.com/role/DisclosureSummaryofSignificantAccountingPoliciesRestrictedCashTableDetails Summary of Significant Account Policies, Restricted Cash (Table) (Details) Details 51 false false R52.htm 400059 - Disclosure - Summary of Significant Accounting Policies - Basis Of Presentation, Subsidiaries, Affiliates and Restricted Cash (Details) Sheet http://www.navios.com/role/DisclosureSummaryofSignificantAccountingPoliciesDetails Summary of Significant Accounting Policies - Basis Of Presentation, Subsidiaries, Affiliates and Restricted Cash (Details) Details 52 false false R53.htm 400060 - Disclosure - Summary of Significant Accounting Policies - Revenue Recognition (Details) Sheet http://www.navios.com/20180930/role/DisclosureVesselsRevenueRecocnitionDetails Summary of Significant Accounting Policies - Revenue Recognition (Details) Details 53 false false R54.htm 400067 - Disclosure - Accounts Receivable, Net - Provisions For Doubtful Accounts (Table) (Details) Sheet http://www.navios.com/role/DisclosureAccountsReceivablesNetDetails3 Accounts Receivable, Net - Provisions For Doubtful Accounts (Table) (Details) Details 54 false false R55.htm 400068 - Disclosure - Accounts Receivable, Net (Details) Sheet http://www.navios.com/role/DisclosureAccountsReceivablesNetDetails Accounts Receivable, Net (Details) Details http://www.navios.com/role/DisclosureAccountsReceivablesNetTables 55 false false R56.htm 400070 - Disclosure - Vessels, Port Terminal and Other Fixed Assets, Net (Table) (Details) Sheet http://www.navios.com/role/DisclosureVesselsPortTerminalsandOtherFixedAssetsDetails2 Vessels, Port Terminal and Other Fixed Assets, Net (Table) (Details) Details http://www.navios.com/role/DisclosureVesselsPortTerminalsandOtherFixedAssetsTables 56 false false R57.htm 400072 - Disclosure - Vessels, Port Terminal and Other Fixed Assets, Net (Details) Sheet http://www.navios.com/role/DisclosureVesselsPortTerminalsandOtherFixedAssetsDetails Vessels, Port Terminal and Other Fixed Assets, Net (Details) Details http://www.navios.com/role/DisclosureVesselsPortTerminalsandOtherFixedAssetsTables 57 false false R58.htm 400077 - Disclosure - Accrued Expenses and Other Liabilitites (Table) (Details) Sheet http://www.navios.com/role/DisclosureAccruedExpensesDetails Accrued Expenses and Other Liabilitites (Table) (Details) Details http://www.navios.com/role/DisclosureAccruedExpensesTables 58 false false R59.htm 400078 - Disclosure - Borrowings (Table) (Details) Sheet http://www.navios.com/role/DisclosureBorrowingsDetails2 Borrowings (Table) (Details) Details http://www.navios.com/role/DisclosureBorrowingsTables 59 false false R60.htm 400079 - Disclosure - Borrowings - Principal Payments (Table) (Details) Sheet http://www.navios.com/role/DisclosureBorrowingsDetails3 Borrowings - Principal Payments (Table) (Details) Details 60 false false R61.htm 400081 - Disclosure - Borrowings - Credit Facilities (Details) Sheet http://www.navios.com/role/DisclosureBorrowingsDetails Borrowings - Credit Facilities (Details) Details 61 false false R62.htm 400082 - Disclosure - Borrowings - Additional Information (Details) Sheet http://www.navios.com/20180930/role/BorrowingsAdditionalInformationDetails Borrowings - Additional Information (Details) Details 62 false false R63.htm 400083 - Disclosure - Borrowings - Repayment Terms and Covenants (Details) Sheet http://www.navios.com/20180930/role/DisclosureBorrowingsDetails10 Borrowings - Repayment Terms and Covenants (Details) Details 63 false false R64.htm 400084 - Disclosure - Fair Value of Financial Instruments - Fair Value (Table) (Details) Sheet http://www.navios.com/role/DisclosureDerivativesandFairValueofFinancialInstrumentsDetails2 Fair Value of Financial Instruments - Fair Value (Table) (Details) Details 64 false false R65.htm 400085 - Disclosure - Fair Value of Financial Instruments - Recurring Measurements (Table) (Details) Sheet http://www.navios.com/role/DisclosureDerivativesandFairValueofFinancialInstrumentsDetails3 Fair Value of Financial Instruments - Recurring Measurements (Table) (Details) Details 65 false false R66.htm 400086 - Disclosure - Fair Value of Financial Instruments - Assets measured at Fair Value on a Non-Recurring Basis (Table) (Details) Sheet http://www.navios.com/role/DisclosureFairValueofFinancialInstrumentsofNonrecuringMeasurementsTableDetails Fair Value of Financial Instruments - Assets measured at Fair Value on a Non-Recurring Basis (Table) (Details) Details 66 false false R67.htm 400089 - Disclosure - Fair Value of Financial Instruments (Details) Sheet http://www.navios.com/role/DisclosureFairValueofFinancialInstrumentsReccuringMeasurementsDetails Fair Value of Financial Instruments (Details) Details http://www.navios.com/role/DisclosureDerivativesandFairValueofFinancialInstrumentsTables 67 false false R68.htm 400090 - Disclosure - Employee Benefit Plans (Table) (Details) Sheet http://www.navios.com/role/DisclosureEmployeeBenefitPlansDetails2 Employee Benefit Plans (Table) (Details) Details http://www.navios.com/role/DisclosureEmployeeBenefitPlansTables 68 false false R69.htm 400092 - Disclosure - Commitments - Navios Holdings Future Minimum Commitments for Chartered-In Vessels, Barges and Pushboats (Table) (Details) Sheet http://www.navios.com/20180930/role/DisclosureCommitmentsForCharteredInVesselsBargesAndPushboatsTableDetails Commitments - Navios Holdings Future Minimum Commitments for Chartered-In Vessels, Barges and Pushboats (Table) (Details) Details 69 false false R70.htm 400093 - Disclosure - Commitments and Contingencies (Details) Sheet http://www.navios.com/role/DisclosureCommitmentsandContingenciesDetails Commitments and Contingencies (Details) Details http://www.navios.com/20180930/role/DisclosureCommitmentsandContingenciesTables 70 false false R71.htm 400094 - Disclosure - Leases - Navios Holdings Future Minimum Commitments for Chartered-In Vessels, Barges, Pushboats and Office Space (Table) (Details) Sheet http://www.navios.com/role/DisclosureLeasesDetails2 Leases - Navios Holdings Future Minimum Commitments for Chartered-In Vessels, Barges, Pushboats and Office Space (Table) (Details) Details 71 false false R72.htm 400095 - Disclosure - Leases - Navios Holdings Future Revenue for Chartered-Out Vessels, Barges, Pushboats and for Logistics Business (Table) (Details) Sheet http://www.navios.com/role/DisclosureLeasesDetails3 Leases - Navios Holdings Future Revenue for Chartered-Out Vessels, Barges, Pushboats and for Logistics Business (Table) (Details) Details 72 false false R73.htm 400096 - Disclosure - Leases (Details) Sheet http://www.navios.com/20180930/role/DisclosureLeasesDetails Leases (Details) Details http://www.navios.com/role/DisclosureLeasesTables 73 false false R74.htm 400098 - Disclosure - Transactions with Related Parties - Vessels Charter Hire and Management Fees (Details) Sheet http://www.navios.com/20180930/role/DisclosureTransactionsWithRelatedPartiesDetails2 Transactions with Related Parties - Vessels Charter Hire and Management Fees (Details) Details 74 false false R75.htm 400101 - Disclosure - Other Expense, Net (Details) Sheet http://www.navios.com/20180930/role/DisclosureOtherIncomeandExpenseDetails Other Expense, Net (Details) Details http://www.navios.com/20180930/role/DisclosureOtherIncomeandExpense 75 false false R76.htm 400102 - Disclosure - Segment Information (Table) (Details) Sheet http://www.navios.com/role/DisclosureSegmentInformationDetails2 Segment Information (Table) (Details) Details http://www.navios.com/role/DisclosureSegmentInformationTables 76 false false R77.htm 400105 - Disclosure - Loss Per Common Share (Table) (Details) Sheet http://www.navios.com/role/DisclosureEarningsPerCommonShareDetails Loss Per Common Share (Table) (Details) Details http://www.navios.com/role/DisclosureEarningsPerCommonShareTables 77 false false R78.htm 400106 - Disclosure - Loss Per Common Share (Details) Sheet http://www.navios.com/20180930/role/EarningsPerCommonShareAntidilutive Loss Per Common Share (Details) Details http://www.navios.com/role/DisclosureEarningsPerCommonShareTables 78 false false R79.htm 400107 - Disclosure - Investments in affiliates and investments in available-for-sale securities (Table) (Details) Sheet http://www.navios.com/role/DisclosureInvestmentinAffiliatesDetails2 Investments in affiliates and investments in available-for-sale securities (Table) (Details) Details 79 false false R80.htm 400109 - Disclosure - Investments in affiliates and investments in available-for-sale securities - Navios Europe I and Navios Europe II (Details) Sheet http://www.navios.com/20180930/role/InvestmentNaviosEurope Investments in affiliates and investments in available-for-sale securities - Navios Europe I and Navios Europe II (Details) Details 80 false false R81.htm 400110 - Disclosure - Investments in affiliates and investments in available-for-sale securities - Navios Containers (Details) Sheet http://www.navios.com/20180930/role/InvestmentNaviosContainersDetails Investments in affiliates and investments in available-for-sale securities - Navios Containers (Details) Details 81 false false R82.htm 400111 - Disclosure - Investments in affiliates and investments in available-for-sale securities - Investments in available-for-sale securities (Details) Sheet http://www.navios.com/role/DisclosureInvestmentinAvailableForSaleSecuritiesDetails Investments in affiliates and investments in available-for-sale securities - Investments in available-for-sale securities (Details) Details 82 false false R83.htm 402053 - Disclosure - Description of Business - Related Parties - Navios Europe I (Table) (Details) Sheet http://www.navios.com/20180930/role/DescriptionOfBusinessRelatedPartiesNaviosEuropeDetails Description of Business - Related Parties - Navios Europe I (Table) (Details) Details 83 false false R84.htm 402059 - Disclosure - Summary of Significant Accounting Policies - Long Lived Assets and Deferred Costs (Details) Sheet http://www.navios.com/20180930/role/DisclosureVesselsLonglivedAndAssetsDeferredCostsDetails Summary of Significant Accounting Policies - Long Lived Assets and Deferred Costs (Details) Details 84 false false R85.htm 402060 - Disclosure - Summary of Significant Accounting Policies - Goodwill and Other Intangibles - Intangibles Other Than Goodwill and Foreign Currency Translation (Details) Sheet http://www.navios.com/20180930/role/IntangiblesOtherThanGoodwillTableDetails Summary of Significant Accounting Policies - Goodwill and Other Intangibles - Intangibles Other Than Goodwill and Foreign Currency Translation (Details) Details 85 false false R86.htm 402061 - Disclosure - Summary of Significant Accounting Policies - Provisions, Employee Benefits, Income Taxes and Dividends (Details) Sheet http://www.navios.com/20180930/role/SummaryOfSignificantAccountingPoliciesProvisionsAndEmployeeBenefits Summary of Significant Accounting Policies - Provisions, Employee Benefits, Income Taxes and Dividends (Details) Details 86 false false R87.htm 402062 - Disclosure - Summary of Significant Accounting Policies - Convertible Preferred Stock- Cumulative Redeemable Perpetual Preferred Stock (Details) Sheet http://www.navios.com/20180930/role/SummaryOfSignificantAccountingPoliciesConvertiblePreferredStock Summary of Significant Accounting Policies - Convertible Preferred Stock- Cumulative Redeemable Perpetual Preferred Stock (Details) Details 87 false false R88.htm 402063 - Disclosure - Cash and Cash Equivalents (Table) (Details) Sheet http://www.navios.com/role/DisclosureCashandCashEquivalentsDetails2 Cash and Cash Equivalents (Table) (Details) Details http://www.navios.com/role/DisclosureCashandCashEquivalentsTables 88 false false R89.htm 402065 - Disclosure - Accounts Receivable, Net (Table) (Details) Sheet http://www.navios.com/role/DisclosureAccountsReceivablesNetDetails2 Accounts Receivable, Net (Table) (Details) Details http://www.navios.com/role/DisclosureAccountsReceivablesNetTables 89 false false R90.htm 402068 - Disclosure - Prepaid Expenses and Other Current Assets (Table) (Details) Sheet http://www.navios.com/role/DisclosurePrepaidExpensesandOtherCurrentAssetsDetails Prepaid Expenses and Other Current Assets (Table) (Details) Details http://www.navios.com/role/DisclosurePrepaidExpensesandOtherCurrentAssetsTables 90 false false R91.htm 402071 - Disclosure - Vessels, Port Terminal and Other Fixed Assets, Net - Navios Logistics (Details) Sheet http://www.navios.com/20180930/role/DisclosureVesselsPushboatsOtherFixedAssetsNaviosLogistics Vessels, Port Terminal and Other Fixed Assets, Net - Navios Logistics (Details) Details 91 false false R92.htm 402072 - Disclosure - Intangible Assets/Liabilities Other Than Goodwill (Table) (Details) Sheet http://www.navios.com/role/DisclosureIntangibleAssetsOtherThanGoodwillDetails2 Intangible Assets/Liabilities Other Than Goodwill (Table) (Details) Details 92 false false R93.htm 402073 - Disclosure - Intangible Assets/Liabilities Other Than Goodwill - Amortization Expense (Table) (Details) Sheet http://www.navios.com/role/DisclosureIntangibleAssetsOtherThanGoodwillDetails3 Intangible Assets/Liabilities Other Than Goodwill - Amortization Expense (Table) (Details) Details 93 false false R94.htm 402074 - Disclosure - Intangible Assets/Liabilities Other Than Goodwill - Amortization Schedule (Table) (Details) Sheet http://www.navios.com/role/DisclosureIntangibleAssetsOtherThanGoodwillDetails4 Intangible Assets/Liabilities Other Than Goodwill - Amortization Schedule (Table) (Details) Details 94 false false R95.htm 402075 - Disclosure - Intangible Assets/Liabilities Other Than Goodwill - Additional Details (Details) Sheet http://www.navios.com/20180930/role/DisclosureIntangibleAssetsOtherThanGoodwillDetails10 Intangible Assets/Liabilities Other Than Goodwill - Additional Details (Details) Details 95 false false R96.htm 402077 - Disclosure - Investments in affiliates and investments in available-for-sale securities (Details) Sheet http://www.navios.com/role/DisclosureInvestmentinAffiliatesDetails Investments in affiliates and investments in available-for-sale securities (Details) Details 96 false false R97.htm 402084 - Disclosure - Borrowings - Senior and Ship Mortgage Notes Navios Holdings and Navios Logistics (Details) Notes http://www.navios.com/20180930/role/DisclosureBorrowingsNotesLogisticsHoldings Borrowings - Senior and Ship Mortgage Notes Navios Holdings and Navios Logistics (Details) Details 97 false false R98.htm 402091 - Disclosure - Fair Value of Financial Instruments - Non-Recurring Measurements (Table) (Details) Sheet http://www.navios.com/role/DisclosureDerivativesandFairValueofFinancialInstrumentsDetails4 Fair Value of Financial Instruments - Non-Recurring Measurements (Table) (Details) Details 98 false false R99.htm 402095 - Disclosure - Employee Benefit Plans - Additional Information (Details) Sheet http://www.navios.com/20180930/role/DisclosureEmployeeBenefitPlansDetails10 Employee Benefit Plans - Additional Information (Details) Details 99 false false R100.htm 402101 - Disclosure - Transactions with Related Parties (Details) Sheet http://www.navios.com/role/DisclosureTransactionswithRelatedPartiesDetails Transactions with Related Parties (Details) Details http://www.navios.com/role/DisclosureTransactionswithRelatedParties 100 false false R101.htm 402103 - Disclosure - Preferred and Common Stock (Details) Sheet http://www.navios.com/role/DisclosurePreferredandCommonStockDetails Preferred and Common Stock (Details) Details http://www.navios.com/role/DisclosurePreferredandCommonStock 101 false false R102.htm 402104 - Disclosure - Interest Expense and Finance Cost (Table) (Details) Sheet http://www.navios.com/role/DisclosureInterestExpenseandFinanceCostNetDetails Interest Expense and Finance Cost (Table) (Details) Details http://www.navios.com/role/DisclosureInterestExpenseandFinanceCostNetTables 102 false false R103.htm 402106 - Disclosure - Segment Information - Revenue by Geographic Region (Table) (Details) Sheet http://www.navios.com/role/DisclosureSegmentInformationDetails3 Segment Information - Revenue by Geographic Region (Table) (Details) Details 103 false false R104.htm 402107 - Disclosure - Segment Information (Details) Sheet http://www.navios.com/role/DisclosureSegmentInformationDetails Segment Information (Details) Details http://www.navios.com/role/DisclosureSegmentInformationTables 104 false false R105.htm 402110 - Disclosure - Income Taxes (Details) Sheet http://www.navios.com/role/DisclosureIncomeTaxesDetails Income Taxes (Details) Details http://www.navios.com/role/DisclosureIncomeTaxes 105 false false R106.htm 402116 - Disclosure - Subsequent Events (Details) Sheet http://www.navios.com/20180930/role/SubsequentEventsDisclosure Subsequent Events (Details) Details http://www.navios.com/role/DisclosureSubsequentEvents 106 false false All Reports Book All Reports nm-20180930.xml nm-20180930.xsd nm-20180930_cal.xml nm-20180930_def.xml nm-20180930_lab.xml nm-20180930_pre.xml http://fasb.org/srt/2018-01-31 http://xbrl.sec.gov/dei/2018-01-31 http://xbrl.sec.gov/country/2017-01-31 http://fasb.org/us-gaap/2018-01-31 true true