Document And Entity Information
OTHER INCOME / (EXPENSES):
Note To Financial Statement Details Textual
Significant Accounting Policies
Note 1 - Basis of Presentation and General Information
Note 6 - Vessels and Advances, Net
Note 7 - Deferred Charges, Net
Note 9 - Equity Method Investments
Note 10 - Long-term Debt
Not Designated as Hedging Instrument [Member]
Note 11 - Right-of-Use Assets and Finance Lease Liabilities
NON-CURRENT LIABILITIES:
Note 12 - Accrued Charter Revenue, Current and Non-current, Unearned Revenue, Current and Non-current and Time Charter Assumed, Current and Non-current
Category of Item Purchased [Axis]
Note 13 - Commitments and Contingencies
Long-term Purchase Commitment, Category of Item Purchased [Domain]
Income Tax Disclosure [Text Block]
Note 15 - Earnings Per Share
Note 16 - Interest and Finance Costs
Hedging Designation [Axis]
Note 18 - Derivatives
Hedging Designation [Domain]
Note 19 - Financial Instruments
Designated as Hedging Instrument [Member]
Note 1 - Basis of Presentation and General Information - Revenues from Significant Charterers (Details)
us-gaap_LiabilitiesCurrent
Total current liabilities
Due to related parties (Note 3)
Due to Related Parties, Current, Total
Schedule of Maturities of Long-term Debt [Table Text Block]
Note 1 - Basis of Presentation and General Information - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details)
Schedule of Debt [Table Text Block]
Note 6 - Vessels and Advances, Net - Summary of Vessels (Details)
Note 7 - Deferred Charges, Net - Schedule of Deferred Charges, Net (Details)
Note 9 - Equity Method Investments - Companies Accounted for as Equity Method Investments (Details)
Other current liabilities
Note 9 - Equity Method Investments - Summarized Financial Information on Equity Method Investments (Details)
Note 10 - Long-term Debt - Schedule of Long-term Debt (Details)
Note 10 - Long-term Debt - Annual Repayments Under Credit Facilities and Term Loans (Details)
Note 10 - Long-term Debt - Financing Costs Included in Loan Balances (Details)
us-gaap_FinitelivedIntangibleAssetsAcquired1
Finite-lived Intangible Assets Acquired
Note 11 - Right-of-Use Assets and Finance Lease Liabilities - Schedule of Prepaid Lease Rentals (Details)
Reddick Shipping Co. and Verandi Shipping Co. Term Loan, Tranche A [Member]
Represents tranche A of the term loan issued by Riddick shipping Co. and Verandi Shipping Co.
us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life
Note 11 - Right-of-Use Assets and Finance Lease Liabilities - Annual Lease Payments (Details)
Note 11 - Right-of-Use Assets and Finance Lease Liabilities - Finance Lease Obligations (Details)
Insurance claims receivable
Note 12 - Accrued Charter Revenue, Current and Non-current, Unearned Revenue, Current and Non-current and Time Charter Assumed, Current and Non-current - Schedule of Accrued Revenue (Details)
Note 12 - Accrued Charter Revenue, Current and Non-current, Unearned Revenue, Current and Non-current and Time Charter Assumed. Current and Non-current - Schedule of Unearned Revenue (Details)
Note 13 - Commitments and Contingencies - Schedule of Time Charter Arrangements (Details)
cmre_InterestCostsCapitalizedToVesselsAndAdvancesNet
Interest Costs Capitalized to Vessels and Advances, Net
Amount of interest capitalized during the period to Vessels and Advances, net.
Note 15 - Earnings Per Share - Schedule of Earnings Per Share (Details)
Total long-term debt
Total
Represents the gross amount of long-term debt at the balance sheet date, including term loans and other financing arrangements.
Note 16 - Interest and Finance Costs - Schedule of Income Statement Related Costs (Details)
Note 18 - Derivatives - Effect of Derivative Instruments (Details)
us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Business Acquisition, Percentage of Voting Interests Acquired
us-gaap_DerivativeLiabilitiesCurrent
Fair value of derivatives (Notes 18 and 19)
Note 18 - Derivatives - Derivatives Not Designated as Hedging Instruments and Ineffectiveness of Hedging Instruments (Details)
Note 19 - Financial Instruments - Fair Value of Assets and Liabilities (Details)
Notes To Financial Statements
Notes To Financial Statements [Abstract]
us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities
Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities
Current portion of long-term debt, net of deferred financing costs (Note 10)
- Other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax, Total
Equity Securities [Member]
us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
York [Member]
Represents information pertaining to York.
Financial Instruments [Domain]
MSC Pylos [Member]
Represents information pertaining to MSC Pylos.
Companies Owning Triton, Titan, Talos, Taurus and Theseus [Member]
Represents information pertaining to companies owning Triton, Titan, Talos, Taurus and Theseus.
Loan Agreement to Partially Finance the Acquisition of Megalopolis and Marathopolis, Tranche B [Member]
Refers to information regarding tranche B of the loan agreement partially finance the Megalopolis and Marathopolis acquisition.
Financial Instrument [Axis]
Loan Agreement to Partially Finance the Acquisition of Megalopolis and Marathopolis, Tranche A [Member]
Refers to information regarding tranche A of the loan agreement partially finance the Megalopolis and Marathopolis acquisition.
us-gaap_DerivativeLiabilityNotionalAmount
Derivative Liability, Notional Amount
Accrued liabilities
Lessee, Finance Leases [Text Block]
Accounts payable
us-gaap_PolicyTextBlockAbstract
Accounting Policies
cmre_SwapsBreakageCost
Swaps Breakage Cost
Swaps breakage cost (Note 18)
The amount paid to counterparty for early termination of derivatives.
Non-Cash Investing and Financing Activities:
- Preferred stock Series E expenses (Note 14)
The amount of expenses related to the issuance of series preferred stock.
Vessels impairment loss
Vessels Impairment Loss
Vessels impairment loss (Notes 6 and 7)
Amount of write-down of vessels recognized in the income statement.
- Preferred stock Series E issuance (Note 14)
Represents the value of preferred stock series issued during period.
- Preferred stock Series E issuance (Note 14) (in shares)
Represents number of preferred stock series issued during period.
Financial Instruments Disclosure [Text Block]
CURRENT LIABILITIES:
us-gaap_Assets
Total assets
Supplemental Cash Information:
Net income available to common stockholders
Net income available to Common Stockholders
cmre_NumberOfVesselsWriteDown
Number of Vessels Write-down
Represents the number of vessels write-down during the period.
us-gaap_PreferredStockDividendsAndOtherAdjustments
Earnings allocated to Preferred Stock (Note 15)
Finance lease liabilities to be settled through term-loan proceeds included in current Restricted cash, net (Note 11)
Finance Lease, Liability, Current, To Be Settled Through Term-loan Proceeds
Present value of lessee's discounted obligation for lease payments from finance lease, classified as current, to be settled through term-loan proceeds included in current restricted cash, net.
Finance lease liabilities, net (Note 11)
Present value of lessee's discounted obligation for lease payments from finance lease, classified as current, excluding finance lease liabilities to be settled through term-loan proceeds included in current restricted cash, net.
cmre_ConstructionAndInstallationOfScrubbersNumberOfExistingVesselsForWhichAmountsArePayable
Construction and Installation of Scrubbers, Number of Existing Vessels for Which Amounts are Payable
Represents the number of existing vessels for which there is construction and installation of scrubbers and for which there are amounts payable.
cmre_AggregatePayableInRelationToTheConstructionAndInstallationOfScrubbers
Aggregate Payable in Relation to the Construction and Installation of Scrubbers
Represents the aggregate payable in relation to the construction and installation of scrubbers in existing vessels.
Finance Lease Associated with the MSC Azov [Member]
Represents information pertaining to a finance lease associated with the MSC Asov.
Net income for the period
Net income:
Net Income
us-gaap_FiniteLivedIntangibleAssetsNet
Finite-Lived Intangible Assets, Net, Ending Balance
cmre_ConstructionAndInstallationOfScrubbersNumberOfVesselsFinanced
Construction and Installation of Scrubbers, Number of Vessels Financed
Represents the number of vessels for which the construction and installation of scrubbers is financed.
Time charter assumed, non-current (Note 12)
cmre_ConstructionAndInstallationOfScrubbersAmountFinanced
Construction and Installation of Scrubbers, Amount Financed
Represents the amount financed for the construction and installation of scrubbers.
Costamare Inc. 3 [Member]
Represents information pertaining to a third Costamare loan agreement.
Costamare Inc. 1 [Member]
Represents information pertaining to a first Costamare Inc. term loan.
Proceeds from the settlement of insurance claims
MSC Pylos and Piraeus [Member]
Represents information pertaining to MSC Pylos and Piraeus.
cmre_NumberOfVesselsCompletedDdDuringPeriod
Number of Vessels Completed DD During Period
The number of vessels completed dry-docking (DD) during the reporting period.
Sale Leaseback Transactions Regarding Vessels MSC Athens and MSC Athos [Member]
Represents information pertaining to sale leaseback transactions regarding vessels MSC Athens and MSC Athos.
Costamare Inc. 2 [Member]
Represents information pertaining to a second Costamare loan facility.
Costamare Inc. 5 [Member]
Represents information pertaining to a fifth Costamare loan agreement.
Costamare Inc. 4 [Member]
Represents information pertaining to a fourth Costamare loan agreement.
Foreign exchange gains / (losses), net
Represents the amount of foreign exchange gains (losses) included in operating income (loss) during the period.
Term Loan and Other Financing Arrangements [Member]
Term loans and other financing arrangements classified as long term debt.
Nerida Shipping Company Term Loan [Member]
Represents information about term loan issued by Nerida Shipping Co.
Commitments and Contingencies Disclosure [Text Block]
Balance, Accumulated Depreciation at beginning of the period
Balance, Accumulated Depreciation at end of the period
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
us-gaap_PropertyPlantAndEquipmentNet
Total fixed assets, net
Long-term Debt, Type [Axis]
Long-term Debt, Type [Domain]
FIXED ASSETS, NET:
Participation percentage
Forward contracts
Forward contracts-asset position
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value
Derivative Instrument [Axis]
Derivative Contract [Domain]
Cash Flows From Investing Activities:
us-gaap_HeldToMaturitySecurities
Debt Securities, Held-to-maturity, Total
Earnings Per Share [Text Block]
us-gaap_EquitySecuritiesFvNi
Equity Securities, FV-NI
us-gaap_IncreaseDecreaseInOtherOperatingLiabilities
Other current liabilities
us-gaap_ForeignCurrencyFairValueHedgeDerivativeAtFairValueNet
Foreign Currency Fair Value Hedge Derivative at Fair Value, Net, Total
us-gaap_GainLossOnForeignCurrencyFairValueHedgeDerivatives
Gain (Loss) on Foreign Currency Fair Value Hedge Derivatives
Equity gain on investments (Note 9)
Income (Loss) from Equity Method Investments, Total
Equity gain on investments
us-gaap_DeferredFinanceCostsGross
Less: Deferred financing costs
Equity method investments (Notes 2 and 9)
Related Party Transactions Disclosure [Text Block]
Loans Payable [Member]
us-gaap_IncreaseDecreaseInAccruedLiabilities
Accrued liabilities
us-gaap_IncreaseDecreaseInAccountsPayable
Accounts payable
us-gaap_GainLossOnDerivativeInstrumentsNetPretax
Loss / (Gain) on derivative instruments, net
Restricted cash – non-current portion
Restricted cash (Note 2)
us-gaap_GeneralAndAdministrativeExpense
General and administrative expenses
Restricted cash – current portion
us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue
Restricted cash (Note 2)
us-gaap_IncreaseDecreaseInDueToRelatedParties
Due to related parties
us-gaap_NumberOfForeignCurrencyDerivativesHeld
Number of Foreign Currency Derivatives Held
Cash and cash equivalents
Cash and cash equivalents (Note 2)
Right-of-use assets (Note 11)
Amount after accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services.
cmre_VesselsNet
Balance, Net Book Value at beginning of the period
Balance, Net Book Value at end of the period
Cost of vessels, including contract price and any material expenses incurred upon acquisition (initial repairs, improvements and delivery expenses, interest and on-site supervision costs incurred during the construction periods), less accumulated depreciation.
Vessel held for sale (Note 6)
Vessel Held For Sale
Related to vessels held for sale.
us-gaap_InterestRateDerivativeLiabilitiesAtFairValue
Interest rate swaps-liability position
Fair value of derivatives, non-current (Notes 18 and 19)
cmre_VoyageExpenses
Voyage expenses
Expenses paid to third parties primarily consisting of port, canal and bunker expenses, commissions that are unique to a particular charter and are paid for by the charterer under time charter arrangements or by the company under voyage charter arrangements, and commissions that are paid directly to brokers by the company.
Prepaid lease rentals, non-current (Note 11)
Non-current portion
It is the non-current portion of the unamortized balance of the difference between the fair value of the asset sold and the carrying amount of the asset, when the fair value of the asset sold is more than its carrying amount. It is also include the amount of net settlement of interest rate swaps qualifying for cash flow hedge that has been reclassified as prepaid lease rentals. The prepaid lease rental is amortizing over the lease term.
cmre_ManagementFeesRelatedParties
Management Fees Related Parties
Management fees-related parties (Note 3)
Fees paid to related parties for providing the company with technical, crewing, bunkering, accounting, provisions, sale, purchase services, as well as general administrative, certain commercial services, director and officer related insurance services.
cmre_AmortizationDeferredDrydockingSpecialSurvey
Amortization of dry-docking and special survey costs (Note 7)
Amortization of deferred dry-docking and special survey costs
Amortization of deferred drydocking and special survey costs.
cmre_VoyageExpensesRelatedParties
Voyage Expenses Related Parties
Voyage expenses-related parties (Note 3)
Expenses paid to related parties primarily consisting of commissions and fees, which are paid for by the company, regardless of the charter type.
cmre_GeneralAdministrativeExpensesRelatedParties
General and administrative expenses – related parties (Note 3)
The total of expenses of managing and administering the affairs of an entity paid to related parties, including affiliates of the reporting entity, which are not directly or indirectly associated with vessel operations.
Interest rate swaps-asset position
cmre_AmountsReclassifiedFromNetSettlementsOnInterestRateSwapsQualifyingForHedgeAccountingToDepreciation
Amounts Reclassified From Net Settlements on Interest Rate Swaps Qualifying for Hedge Accounting to Depreciation
Amounts reclassified from Net settlements on interest rate swaps qualifying for hedge accounting to Depreciation (Note 20)
This element represents the amounts reclassified from Net settlements on interest rate swaps qualifying for hedge accounting to Depreciation
Loss on derivative instruments, net (Note 18)
Total
Amortization of prepaid lease rentals, net
cmre_AmortizationOfPrepaidLeaseRentalsNet
Amortization of prepaid lease rentals, net (Notes 11 and 12)
The amortization of prepaid lease rentals (loss) and deferred gain (gain) from sale and leaseback transactions.
Loss on sale / disposal of vessels, net (Note 6)
Gain (Loss) on Sale Vessels
Loss on sale / disposal of vessels, net
The difference between the sale price or salvage price and the book value of a vessel that was sold during the reporting period. This element refers to the gain (loss).
cmre_IncreaseDecreaseInAccruedCharterRevenue
Accrued charter revenue
The increase (decrease) during the reporting period, in revenue earned but not yet received, which were recognized in under the straight-line method in conformity with revenue recognition criteria based on specific contractual terms.
cmre_DrydockingCosts
Dry-dockings
Cash paid during the reporting period for vessel drydocking costs.
Amendment Flag
Offering proceeds, net of related expenses
Follow on Offering Proceeds Net Related Expenses
This element represents proceeds received after stock issuance common and/or preferred, net of related issuance costs.
us-gaap_ComprehensiveIncomeNetOfTax
Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total
Total comprehensive income for the period
cmre_PaymentsToAcquireVessels
Vessel acquisition (and time charters) and advances/Additions to vessel cost
The cash outflow associated with the acquisition of vessel that are used in the normal conduct of business to produce goods and services and not intended for resale and or upgrades of existing vessels to increase their earnings capacity.
Proceeds from the sale of vessels, net
The cash inflow from the sale of vessels.
us-gaap_DebtInstrumentPeriodicPayment
Debt Instrument, Periodic Payment, Total
Major Customer C [Member]
Information pertaining to major customer C.
New Accounting Pronouncements, Policy [Policy Text Block]
Major Customer D [Member
Information pertaining to major customer D.
Major Customer A [Member]
Information pertaining to major customer A.
us-gaap_DebtInstrumentPeriodicPaymentTermsBalloonPaymentToBePaid
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid
Major Customer B [Member]
Information pertaining to major customer B.
cmre_OfficersCompensationChargedPeriodEnd
Officers Compensation Charged, Period End
Portion of expenditures for salaries of officers charged at period end. Does not include allocated share-based compensation, pension and post-retirement benefit expense or other labor-related non-salary expense. For commercial and industrial companies, excludes any direct and overhead labor that is included in cost of goods sold.
us-gaap_DebtInstrumentPeriodicPaymentPrincipal
Debt Instrument, Periodic Payment, Principal
us-gaap_InterestRateFairValueHedgeDerivativeAtFairValueNet
Interest Rate Fair Value Hedge Derivative at Fair Value, Net, Total
us-gaap_LongtermDebtWeightedAverageInterestRate
Long-term Debt, Weighted Average Interest Rate, at Point in Time
us-gaap_SharesOutstanding
Balance (in shares)
Balance (in shares)
us-gaap_CommonStockSharesOutstanding
Common Stock, Shares, Outstanding, Ending Balance
Costamare Shipping Company SA and Costamare Shipping Services Ltd. [Member]
Information pertaining to Costamare Shipping Comany SA and Costamare Shipping Services Ltd.
cmre_ManagementFeePerDayPerVesselUnderBareboatCharter
Management Fee Per Day, Per Vessel Under Bareboat Charter
The amount of management fee per day, per vessel under bareboat charter.
cmre_ConstructionSupervisoryFee
Construction Supervisory Fee
This item represents the commission payable to Managers upfront in lieu of the fixed management fee.
us-gaap_DebtInstrumentInterestRateDuringPeriod
Debt Instrument, Interest Rate During Period
cmre_ManagementFeePerDayPerVessel
Management Fee Per Day, Per Vessel
The amount of management fee per day per vessel.
Current Fiscal Year End Date
cmre_AnnualFeeToRelatedParties
Annual Fee to Related Parties
Annual fee for services provided by Costamare Shipping and/ or Costamare Services as at period end
cmre_CommissionChargedOnCharterHireAgreements
Commission Charged on Charter Hire Agreements
This item represents the commission as a percentage paid to Managers on charter hire agreements.
cmre_NumberOfVesselsUnderShipManagementCell
Number of Vessels Under Ship Management Cell
The number of vessels under the ship mangement cell.
cmre_WorkingCapitalSecurityPerVessel
Working Capital Security Per Vessel
The per vessel amount hold by a third party manager as working capital security in accordance with the management agreement between the reporting entity and the third party manager.
Document Fiscal Period Focus
cmre_FairValueOfSharesIssuedToManager
Fair Value of Shares Issued to Manager
Represents the fair value of shares issued to managers.
Document Fiscal Year Focus
cmre_WorkingCapitalSecurity
Working Capital Security
The total amount hold by a third party manager as working capital security in accordance with the management agreement between the reporting entity and the third party manager.
Shanghai Costamare Ship Management Co Ltd [Member]
Information pertaining to Shanghai Costamare Ship Management Co Ltd.
Document Period End Date
cmre_TotalChargesByManagerToCompanysAffiliates
Total Charges by Manager to Companys Affiliates
Aggregate amount charged to the companies established pursuant to the Framework Agreement for services provided in accordance with the respective management agreements.
us-gaap_IncreaseDecreaseInPrepaidExpense
Prepayments and other
SCSC Chairman and CEO [Member]
Information pertaining to SCSC Chairman and CEO.
Entity Emerging Growth Company
cmre_NumberVesselsManaged
Number Vessels Managed
Represents the number of vessels managed.
us-gaap_DebtInstrumentFaceAmount
Debt Instrument, Face Amount
Document Type
cmre_PercentageOwnership
Percentage Ownership
This item represents the percentage of ownership of a related party.
cmre_ManagementFeesExpressedAsGrossRevenue
Management Fees Expressed as Gross Revenue
The percent of revenues expressed as a portion of gross revenues.
Entity Small Business
Entity Shell Company
SCSC GM [Member]
Information pertaining to the SCSC GM.
us-gaap_DividendsCommonStockCash
Dividends, Common Stock, Cash
cmre_AnnualFeeToRelatedPartiesShares
Annual Fee to Related Parties, Shares
Annual fee, in shares, for services provided by Costamare Shipping and/ or Costamare Services as at period end.
us-gaap_DividendsPreferredStockCash
Dividends, Preferred Stock, Cash
- Dividends - Preferred stock (Note 14)
Document Information [Line Items]
us-gaap_DividendsPreferredStock
Dividends, Preferred Stock, Total
Document Information [Table]
cmre_WriteoffDerivingFromFairValueMeasurement
Write-off Deriving from Fair Value Measurement
The write-off of the difference between the aggregate fair value of the debt and equity securities received from ZIM and the then net carrying value of the amounts due from ZIM and is included in General and administrative expenses in the accompanying consolidated statement of income.
Entity Public Float
Schedule of Derivative Assets and Liabilities at Fair Value [Table Text Block]
Tabular disclosure of derivative assets and liabilities at fair value.
Entity Filer Category
Debt Instrument [Axis]
Zim 5.0% Series 2 Notes Due 2023 [Member]
Information pertaining to 5.0% Series 1 Notes due 2023 debt securities received from Zim Integrated Services.
Entity Current Reporting Status
Zim 3.0% Series 1 Notes Due 2023 [Member]
Information pertaining to 3.0% Series 1 Notes due 2023 debt securities received from Zim Integrated Services.
Debt Instrument, Name [Domain]
Entity Voluntary Filers
us-gaap_DividendsCommonStock
- Dividends - Common stock (Note 14)
Entity Well-known Seasoned Issuer
The 5.0% Series 2 Notes Due 2023 [Member]
Information pertaining to the 5% Series 2 Notes Due 2023.
Zim Integrated Services [Member]
The legal entity of Zim Integrated Services.
The 3.0% Series 1 Notes Due 2023 [Member]
Information pertaining to the 3.0% Series 1 Notes Due 2023.
cmre_WriteoffAndOtherMovements
Write-off and other movements (Note 6)
Write-off of deferred charges and other movements.
MARSHALL ISLANDS
Steadman Maritime Co., Horton Maritime Co. and Marchant Maritime Co. [Member]
Represents information relating to Steadman Maritime Co., Horton Maritime Co. and Marchant Maritime Co.
cmre_HeldtomaturitySecuritiesEquityInterestAcquired
Held-to-Maturity Securities, Equity Interest Acquired
Represents the amount of equity interest in the investment acquired.
Zim Investments [Member]
Represents investments in Zim Integrated Services.
Concentration risk percentage
us-gaap_IncreaseDecreaseInAccountsReceivable
Accounts receivable
Statement of Comprehensive Income [Abstract]
Entity Central Index Key
Entity Registrant Name
Liability Class [Axis]
Fair Value by Liability Class [Domain]
Entity [Domain]
us-gaap_IncreaseDecreaseInInsuranceSettlementsReceivable
Insurance claims receivable
Legal Entity [Axis]
cmre_NumberOfVesselsUnderSaleAndLeasebackTransactions
Number of Vessels Under Sale and Leaseback Transactions
Represents the number of vessels under sale and leaseback transactions.
Customer Concentration Risk [Member]
cmre_NumberOfVesselsProvidedAsCollateralsToSecureLoans
Number of Vessels Provided as Collaterals to Secure Loans
The number of vessels provided as collaterals to secure loans as of the reporting period.
us-gaap_AmortizationOfDeferredCharges
Amortization
cmre_CarryingValueOfVesselsProvidedAsCollateralsToSecureLoans
Carrying Value of Vessels Provided as Collaterals to Secure Loans
The carrying value of vessels provided as collaterals to secure loans as of the reporting period.
Amortization of assumed time charter
Amortization of Intangible Assets, Total
us-gaap_IncreaseDecreaseInDueFromRelatedParties
Due from related parties
Ainsley Maritime Co., Ambrose Maritime Co., Kemp Maritime Co. and Hyde Maritime Co.and Skerrett Maritime Co. [Member]
Represents information relating to Ainsley Maritime Co., Ambrose Maritime Co., Kemp Maritime Co. and Hyde Maritime Co.and Skerrett Maritime Co.
cmre_VesselsAtCost
Balance, Vessel Cost at beginning of the period
Balance, Vessel Cost at end of the period
Cost of vessels, including contract price and any material expenses incurred upon acquisition (initial repairs, improvements and delivery expenses, interest and on-site supervision costs incurred during the construction periods).
cmre_PropertyPlantAndEquipmentNetPeriodIncreaseDecrease
Disposals, transfers and other movements, net book value
Amount of increase (decrease) of long-lived, physical assets used in the normal conduct of business and not intended for resale net of accumulated depreciation.
Concentration Risk Type [Axis]
Reclassification to Interest and finance costs, ineffective portion
The ineffective portion and the amount excluded from effectiveness testing, of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.
Concentration Risk Type [Domain]
Schedule of Deferred Charges [Table Text Block]
Tabular disclosure relating to deferred charges including additions, amortization and write-offs of financing cost and vessels drydocking costs. And if applicable transfers to assets held for sale.
Deferred Charges [Text Block]
The entire disclosure for deferred charges.
cmre_NumberVesselsUnderwentDdDuringPeriod
Number Vessels Underwent DD During Period
The number of vessels underwent dry-docking (DD) during the reporting period.
Entity Common Stock, Shares Outstanding (in shares)
cmre_DeferredChargesAdditions
Additions
Represents the amount of additions to deferred charges.
cmre_USRelatedGrossTransportationIncomeThatTaxApplies
US Related Gross Transportation Income That Tax Applies
The percentage of United States related gross transportation income on which tax applied, unless an exemption applies.
Revenue Benchmark [Member]
Interest Finance Costs [Text Block]
Tabular disclosure of interest and finance costs and amortization of financing costs.
Dividend reinvested in common stock of the Company
us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan
Stock Issued During Period, Shares, Dividend Reinvestment Plan
Costamare Ventures Inc. [Text Block]
The entire disclosure relating to the Framework Deed that Costamare Ventures Inc. (wholly owned subsidiary of the reporting Company) entered into, with York Capital Management Advisors LLC and its affiliate Sparrow Holdings LP.
Long-term Debt [Text Block]
Investments [Domain]
us-gaap_IncreaseDecreaseInInventories
Inventories
Trading Symbol
Interest Finance Costs [Table Text Block]
Tabular disclosure of interest and debt related expenses.
us-gaap_CommonStockDividendsShares
Common Stock Dividends, Shares
cmre_ParticipationAfterRestatement
Participation After Restatement
This element represents the percentage of the shareholding of both the Company through Costamare Ventures and York to each affiliated entity.
cmre_NumberOfJointlyOwnedCompanies
Number of Jointly Owned Companies
The number of jointly owned companies formed pursuant to the Framework Agreement with York, that the Company holds a percentage of their capital stock as at the end of the reporting period.
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Investment Type [Axis]
cmre_ParticipationOfCompanysWhollyOwnedSubsidiary
Participation of Company's Wholly Owned Subsidiary
This element represents the percentage of the shareholding of the Company through Costamare Ventures, to each entity.
Net settlements on interest rate swaps qualifying for cash flow hedge
The amount of settlements on interest rate swaps qualifying for cash flow hedge.
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
cmre_AssetAcquisitionPercentageOfAssets
Asset Acquisition, Percentage of Assets
Percentage of assets acquired at the acquisition date in the asset acquisition.
cmre_AnnualFeeToRelatedPartiesCharteredInCurrentPeriod
Annual Fee to Related Parties, Chartered in Current Period
Annual fee for services provided by Costamare Shipping and/ or Costamare Services chartered in the current period.
Common Stock Issued for the Services Agreement [Member]
Refers to information regarding common stock issued for the services agreement.
cmre_ExcessAmountOfAcquisition
Excess Amount of Acquisition
The aggregate net value of assets and liabilities transferred to the Company (excluding the cash and cash equivalents, the value of the fixed assets and the financing arrangements).
us-gaap_TableTextBlock
Notes Tables
Common Stock Issued for Dividend Reinvestment Plan [Member]
Refers to information regarding common stock issued for the dividend reinvestment plan.
Kemp Maritime Co. [Member]
Investment in Kemp Maritime Co.
Costamare Ventures [Member]
The legal entity of Costamare Ventures.
us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Line of Credit Facility, Maximum Borrowing Capacity
Steadman Maritime Co. [Member]
Investment in Steadman Maritime Co.
Horton Maritime Co. [Member]
Investment in Horton Maritime Co.
Benedict, Bertrand, Beardmore, Schofield, and Fairbank Maritime Co. [Member]
Investments in Benedict Maritime Co., Bertrand Maritime Co., Beardmore Maritime Co., Schofield Maritime Co., and Fairbank Maritime Co.
Smales Maritime Co. [Member]
Investment in Smales Maritime Co.
Kemp Maritime Co. and Hyde Maritime Co. [Member]
Investments in Kemp Maritime Co. and Hyde Maritime Co.
Ainsley Maritime Co. and Ambrose Maritime Co. [Member]
Investments in Ainsley Maritime Co. and Ambrose Maritime Co.
Related Party [Axis]
Goodway Maritime Co. [Member]
Investment in Goodway Maritime Co.
Related Party [Domain]
Platt Maritime Co. [Member]
Investment in Platt Maritime Co.
Skerrett Maritime Co. [Member]
Investment in Skerrett Maritime Co.
Geyer Maritime Co. [Member]
Investments in Geyer Maritime Co.
Marchant Maritime Co. [Member]
Investment in Marchant Maritime Co.
Hyde Maritime Co. [Member]
Investment in Hyde Maritime Co.
Platt Maritime Co. and Sykes Maritime Co. [Member]
Investment in Platt Maritime Co. and Sykes Maritime Co.
Ambrose Maritime Co. [Member]
Investment in Ambrose Maritime Co.
Ainsley Maritime Co. [Member]
Investment in Ainsley Maritime Co.
- Issuance of common stock (Notes 3 and 14) (in shares)
Stock Issued During Period, Shares, New Issues
Date of establishment
The dates of establishment or acquisition of the jointly owned companies formed pursuant to the Framework Agreement.
us-gaap_OperatingCostsAndExpenses
Vessels’ operating expenses
Equity Method Investments Summarized Financial Information [Table Text Block]
Tabular disclosure of the summarized financial information regarding equity method investments.
Sykes Maritime Co. [Member]
Investment in Sykes Maritime Co.
us-gaap_HeldToMaturitySecuritiesFairValue
Debt Securities, Held-to-maturity, Fair Value, Total
Vessel name or hull name
The name of vessel or under construction hull name owned by the jointly owned companies formed pursuant to the Framework Agreement.
Mas Shipping Co. Term Loan [Member]
Term loan issued by Mas Shipping Co.
us-gaap_LiabilitiesAndStockholdersEquity
Total liabilities and stockholders’ equity
Montes Shipping Co. and Kelsen Shipping Co. Term Loans [Member]
Term loans issued by Montes Shipping Co. and Kelsen Shipping Co.
- Issuance of common stock (Notes 3 and 14)
Raymond Shipping Co. and Terance Shipping Co. Term Loans [Member]
Term loans issued by Raymond Shipping Co. and Terance Shipping Co.
Interest rate swaps, ineffective portion
Undine Shipping Co., Quentin Shipping Co. and Sander Shipping Co. [Member]
Term loans issued by Undine Shipping Co., Quentin Shipping Co. and Sander Shipping Co.
Total, ineffective portion
Rena Maritime Co., Finch Shipping Co. and Joyner Carriers S.A. [Member]
Term loans issued by Rena Maritime Co., Finch Shipping Co. and Joyner Carriers S.A.
Uriza Shipping Co. Term Loan [Member]
Term loan issued by Uriza Shipping Co.
Retained earnings
Costis Maritime Co., Christos Maritime Co. and Capetanissa Maritime Co. [Member]
Term loans issued by Costis Maritime Co., Christos Maritime Co. and Capetanissa Maritime Co.
Accumulated other comprehensive income / (loss) (Notes 18 and 20)
Interest expense
Interest Expense, Total
us-gaap_InterestExpenseDebt
Interest Expense, Debt, Total
cmre_FeesPaidByVesselowningSubsidiaryPercentage
Fees Paid By Vessel-Owning Subsidiary, Percentage
The percentage of fees paid by each vessel-owning subsidiary of the company of the charter hire and other income earned.
Changes in operating assets and liabilities:
cmre_DebtGuaranteePercentage
Debt Guarantee Percentage
The percentage of debt guaranteed to be covered by the entity.
Amortization and write-off of financing costs
cmre_RevenueDaysPerAnnum
Revenue Days Per Annum
The number of assumed revenue days used in the calculation of the contracted revenue.
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
cmre_TimeCharterArrangementsRemainingTermsPeriod
Time Charter Arrangements Remaining Terms Period
The remaining terms period (in total months) of the contracted time charter agreements, including the contracted time charter agreements of vessels under construction, from the end of the reporting period.
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Inventory Disclosure [Text Block]
Subsequent Event [Member]
Schedule of Non Cancelable Long-Term Time Charter Contracts [Table Text Block]
Tabular disclosure of the long term time charter contracted revenue.
cmre_UnbilledReceivablesNotBillableAmountExpectedToBeCollectedInYearTwo
Accrued Revenue for 2020
Amount of receivables under long-term contracts that have not been billed and were not billable that are expected to be collected in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
Future Minimum Contractual Charter Revenues Assumptions [Member]
Refers to information regarding future minimum contractual charter revenues assumptions.
Unearned Revenues Regarding Hires Collected in Advance [Member]
Refers to information regarding unearned revenues regarding hires collected in advance.
Unearned Revenues Regarding Net Deferred Gains [Member]
Refers to information regarding unearned revenues regarding net deferred gains.
Subsequent Event Type [Axis]
cmre_UnbilledReceivablesNotBillableAmountExpectedToBeCollectedInYearThree
Accrued Revenue for 2021
Amount of receivables under long-term contracts that have not been billed and were not billable that are expected to be collected in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
Time charter assumed (Note 12)
Subsequent Event Type [Domain]
Accrued Charter Revenue, Current and Non-Current and Unearned Revenue, Current and Non-Current [Text Block]
Includes entire disclosure for accrued and deferred revenue.
Deferred charges, net (Note 7)
Balance, at beginning of the period
Balance, at end of the period
Unearned Revenues Regarding Charter Revenues Resulting from Varying Charter Rates [Member]
Refers to information regarding unearned revenues from charter revenues resulting from varying charter rates.
Finance lease liabilities, net of current portion (Note 11)
Subsequent Events [Text Block]
Schedule of Unbilled Receivables, Not Billable at Balance Sheet Date [Table Text Block]
A schedule of unbilled receivables under long-term contracts that have not been billed and were not billable.
cmre_VesselsSaleAndLeasebackPrice
Vessel's sale and leaseback price
The per vessel price for the 3 vessels (MSC Azov, MSC Ajaccio and MSC Amalfi), due to the sale and leaseback transaction.
cmre_SaleLeasebackTransactionTerm
Sale Leaseback Transaction, Term
The term of the sale of the property to another party and the lease of the property back to the seller.
us-gaap_FinanceLeaseLiability
Finance Lease, Liability, Total
Sale Leaseback Transactions Regarding the Vessels MSC Azov, MSC Ajaccio and MSC Amalfi [Member]
Refers to information regarding the sale leaseback transaction related to the vessels MSC Azov, MSC Ajaccio and MSC Amalfi.
cmre_PrepaidLeaseRentalsNet
Prepaid lease rentals
Prepaid lease rentals
The amount after depreciation of the difference between the fair value of the asset sold and the carrying amount of the asset, when the fair value of the asset sold is more than its carrying amount and the amount of net settlement of interest rate swaps qualifying for cash flow hedge that has been reclassified as prepaid lease rentals. The prepaid lease rental is amortizing over the lease term.
Loan Agreement to Partially Refinance Term Loan [Member]
Represents the partial refinance of term loan agreement.
Adele Shipping Co Loan Agreement [Member]
Represents the Adele Shipping Co loan agreement.
Bastian Shipping Co and Cadence Shipping Co Loan Agreement [Member]
Represents the Bastian Shipping Co and Cadence Shipping Co loan agreement.
First Quarter 2019 Dividends [Member]
Represents dividends for the first quarter of 2019.
Fourth Quarter 2018 Dividends [Member]
Represents dividends for fourth quarter of 2018.
cmre_PrepaidLeaseRentalsCurrent
Less: current portion
It is the current portion of the unamortized balance of the difference between the fair value of the asset sold and the carrying amount of the asset, when the fair value of the asset sold is more than its carrying amount. It is also include the amount of net settlement of interest rate swaps qualifying for cash flow hedge that has been reclassified as prepaid lease rentals. The prepaid lease rental is amortizing over the lease term.
Montes Shipping Co. Term Loan [Member]
Term loans issued by Montes Shipping Co.
January 15, 2019 to April 14, 2019 Dividends [Member]
Represents dividends from January 15, 2019 to April 14, 2019.
Other non-current assets (Note 4)
Equity based payments
October 15, 2018 to January 14, 2019 Dividends [Member]
Represents dividends for period from October 15, 2018 through January 14, 2019.
Tranche A Term Loan [Member]
Tranche A loan agreement in consortium of banks.
cmre_SaleAndLeasebackTransactionAdditionalAmount
Sale and Leaseback Transaction, Additional Amount
The amount of additional borrowings under sale and leaseback transaction.
us-gaap_InterestCostsCapitalizedAdjustment
Interest capitalized
Tranche B Term Loan [Member]
Tranche B term loan from consortium of banks.
cmre_DebtInstrumentPrepaidPaymentOnPrincipal
Debt Instrument, Prepaid Payment on Principal
The amount of cash paid towards principal on outstanding debts.
Tranche D Term Loan [Member]
Tranche D term loan from a consortium of banks.
us-gaap_AmortizationOfFinancingCostsAndDiscounts
Amortization and write-off of financing costs
cmre_FinanceLeaseLiabilityExcludingFinancingCosts
Finance Lease Liability, Excluding Financing Costs
Amount of financing lease liability before financing costs.
Finance Lease Obligations Current and Non-Current [Table Text Block]
Tabular disclosure of the finance lease obligations presenting current and non-current balance as at the period end.
Tranche C Term Loan [Member]
Tranche C term loan from a consortium of banks.
Voyage revenue
cmre_FinanceLeaseLiabilityExcludingFinanceCostsCurrent
Finance lease liabilities – current
Amount of finance lease liability before finance costs, current portion.
Tranche E Term Loan [Member]
Tranche E term loan from a consortium of banks.
cmre_FinanceLeaseLiabilityExcludingFinanceCostsNoncurrent
Finance lease liabilities – non-current
Amount of finance lease liability before finance costs, non-current portion.
Amortization of debt discount
Amortization of Debt Discount (Premium)
Prepaid Lease Rentals [Table Text Block]
Tabular disclosure of the entities prepaid lease rentals.
Accounts receivable, non-current (Note 3)
cmre_FinanceLeaseLiabilityDeferredFinanceCostsCurrent
Less: current portion of financing costs
Amount of current deferred finance costs related to finance lease liability.
cmre_FinanceLeaseLiabilityDeferredFinanceCostsNoncurrent
Less: non-current portion of financing costs
Amount of non-current deferred finance costs related to finance lease liability.
Raymond Shipping Co. and Terance Shipping Co. Term Loans Tranche A [Member]
Tranche A of the debt issued from Raymond Shipping Co. and Terance Shipping Co. term loans.
Raymond Shipping Co. and Terance Shipping Co. Term Loans Trache B [Member]
Tranche B of the debt issued from Raymond Shipping Co. and Terance Shipping Co. term loans.
cmre_DebtInstrumentAmoutAvailableToBeDrawn
Debt Instrument, Amout Available to be Drawn
The amount of loans available to be drawn upon.
us-gaap_Depreciation
Depreciation
Depreciation
us-gaap_DepreciationDepletionAndAmortization
Depreciation (Notes 6, 11 and 20)
Depreciation
cmre_CarryingCapacityOfVesselsAtPeriodEndTEU
Carrying Capacity of Vessels at Period End (TEU)
This element represents the carrying capacity of vessels in TEUs (twenty-foot equivalet units) as at the end of each reporting period.
Blue Net Chartering GmbH & Co. KG [Member]
Refers to information regarding Blue Net Chartering GmbH & Co. KG.
Costis Maritime Co. Term Loan [Member]
Term loan issued by Costis Maritime Co.
cmre_NumberOfSubsidiaries
Number of Subsidiaries
The number of subsidiaries owned by the entity.
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Table Text Block]
Tabular disclosure of cash and cash equivalents unrestricted and restricted as to withdrawal or usage.
Costis Maritime Co. and Christos Maritime Co. Term Loans [Member]
Term loans issued by Costis Maritime Co. and Christos Maritime Co.
cmre_TwentyfootEquivalentUnitsMeasuredOnEachVesselAcquired
Twenty-foot Equivalent Units Measured on Each Vessel Acquired
This element represents the carrying capacity of vessels in TEUs (twenty-foot equivalet units) measured on each vessel acquired.
Capetanissa Maritime Co. Term Loan [Member]
Term loan issued by Capetanissa Maritime Co.
cmre_NumberOfVesselsOrdered
Number of Vessels Ordered
The number of vessels ordered during the period.
Rena Maritime Co. Term Loan [Member]
Term loan issued by Rena Maritime Co.
us-gaap_SharesIssuedPricePerShare
Shares Issued, Price Per Share
cmre_NumberOfVessels
Number of Vessels
This element represents the number of vessels owned and operated as at the end of each reporting period.
cmre_NumberOfVesselsAcquired
Number of Vessels Acquired
The number of vessels acquired during the period.
Common Stock Issued to Costamare Shipping Services Ltd. [Member]
Refers to information regarding common stock issued for Costamare Shipping Services Ltd.
us-gaap_AssetsCurrent
Total current assets
cmre_ExpectedCharterTimeOfVessels
Expected Charter Time of Vessels
The exptected charter time of vessels.
Undine, Quentin and Sander Shipping Co. Tranche A and B [Member]
Tranche A & B of the Undine, Quentin and Sander Shipping Corporations.
NON-CURRENT ASSETS:
Five Newbuild Vessels Expected to be Delivered Between the Second Quarter of 2020 and the Second Quarter of 2021 [Member]
Refers to five newbuild vessels are expected to be delivered between the second quarter of 2020 and the second quarter of 2021.
cmre_TermLoanValueMaintenanceClauses
Term Loan, Value Maintenance Clauses
The required fair market value of vessels in relation to the outstanding principal amount on loans.
cmre_ApproximateTwentyfootEquivaletUnitsMeasuredOnEachVesselOrdered
Approximate Twenty-foot Equivalet Units Measured on Each Vessel Ordered
This element represents the approximate carrying capacity of vessels in TEUs (twenty-foot equivalet units) measured on each vessel ordered.
Stockholders' Equity Note Disclosure [Text Block]
cmre_ImpairmentLossTransferredFromDeferredCharges
Impairment Loss Transferred From Deferred Charges
Amount of impairment loss transferred from deferred charges.
Schedule of Financing Costs [Table Text Block]
The tabular disclosure of financing costs associated with outstanding debts.
Additions
Finance costs that have been incurred and deferred during the period.
Undine, Quentin and Sander Shipping Co. Tranche C [Member]
Tranche C under the Undine, Quentin and Sander Shipping Corporations.
Konstantakopoulos Family [Member]
Refers to information regarding the Konstantakopoulos family.
Non-hedging interest rate swaps
Amount of gain (loss) included in earnings for the period from the increase (decrease) in fair value of interest rate swaps not designated as hedging instruments.
cmre_NumberOfUnencumberedVessels
Number of Unencumbered Vessels
The number of unencumbered vessels.
cmre_RealizedGainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments
Realized Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments
Amount of realized gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments.
us-gaap_NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1
Noncash or Part Noncash Acquisition, Net Nonmonetary Assets Acquired (Liabilities Assumed), Total
cmre_DeferredFinanceCostsAmortizationAndWriteoff
Amortization and write-off
The amount of amortization and write-offs related to deferred finance costs.
us-gaap_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1
Noncash or Part Noncash Acquisition, Noncash Financial or Equity Instrument Consideration, Shares Issued
us-gaap_ImpairmentOfInvestments
Other than Temporary Impairment Losses, Investments, Total
Fourth Quarter 2017 Dividends [Member]
Refers to information regarding the fourth quarter 2017 dividends.
Financing costs, non-current portion
Amount, after accumulated amortization, of debt and capital lease issuance costs classified as noncurrent.
cmre_LongtermDebtGrossCurrentMaturities
Less: Long-term debt current portion
Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.
cmre_DeferredFinancingCostsIncludingCapitalLeaseNet
Balance, at beginning of the period
Balance, at end of the period
Amount, after accumulated amortization, of debt and capital lease issuance costs.
Common stock (Note 14)
cmre_DeferredFinanceCostsIncludingCapitalLeasesNetCurrent
Less: Current portion of financing costs
Amount, after accumulated amortization, of debt and capital lease issuance costs classified as current.
Adjustments to reconcile net income to net cash provided by operating activities:
Measurement Frequency [Axis]
October 15, 2017 to January 14, 2018 Dividends [Member]
Refers to October 15, 2017 to January 14, 2018 dividends.
Measurement Frequency [Domain]
First Quarter 2018 Dividends [Member]
Refers to information regarding first quarter 2018 dividends.
Fair Value, Recurring [Member]
us-gaap_CommonStockParOrStatedValuePerShare
Common Stock, Par or Stated Value Per Share
Fair value of derivatives (Notes 18 and 19)
Statistical Measurement [Domain]
Maximum [Member]
Minimum [Member]
Ownership [Domain]
Other Noncurrent Assets [Text Block]
The entire disclosure of other noncurrent assets.
Statistical Measurement [Axis]
Investment, Name [Domain]
Ownership [Axis]
Preferred stock (Note 14)
us-gaap_PreferredStockSharesIssued
Preferred Stock, Shares Issued, Total
Cash paid during the period for interest, net of capitalized interest
Investment, Name [Axis]
Prepaid lease rentals (Note 11)
Geographical [Axis]
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]
Geographical [Domain]
Inventories (Note 5)
us-gaap_PreferredStockParOrStatedValuePerShare
Preferred Stock, Par or Stated Value Per Share
Fair Value, Inputs, Level 3 [Member]
January 30, 2018 to April 14, 2018 Dividends [Member]
Refers to information regarding dividends for January 30, 2018 to April 14, 2018.
Fair Value Hierarchy and NAV [Domain]
January 15, 2018 to April 14, 2018 Dividends [Member]
Refers to information regarding dividends for January 15, 2018 to April 14, 2018.
Customer [Axis]
Customer [Domain]
Fair Value, Inputs, Level 1 [Member]
Fair Value, Inputs, Level 2 [Member]
cmre_NetSettlementsOnInterestRateSwapsQualifyingForCashFlowHedge
Net Settlements On Interest Rate Swaps Qualifying for Cash Flow Hedge
The amount of net settlements on interest rate swaps qualifying for cash flow hedge.
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipmentPeriodIncreaseDecrease
Disposals, transfers and other movements, accumulated depreciation
Fair Value Hierarchy and NAV [Axis]
Bank charges and other financing costs
The amount of bank charges and other financing costs.
us-gaap_ProceedsFromDividendsReceived
Proceeds from Dividends Received
us-gaap_PropertyPlantAndEquipmentGrossPeriodIncreaseDecrease
Disposals, transfers and other movements
Loan Agreement to Partially Finance the Acquisition of Megalopolis and Marathopolis [Member]
Refers to information regarding the loan agreement partially finance the Megalopolis and Marathopolis acquisition.
Vessel acquisitions, advances and other vessels' costs
Vessel acquisitions, advances and other vessels’ costs
us-gaap_IncreaseDecreaseInDeferredRevenue
Unearned revenue
us-gaap_PreferredStockDividendRatePercentage
Preferred Stock, Dividend Rate, Percentage
Due from related parties (Note 3)
Due from Related Parties, Current, Total
Cash Flows From Operating Activities:
Revenue [Policy Text Block]
Statement [Line Items]
Accounts receivable
Additional paid-in capital (Note 14)
REVENUES:
AOCI Attributable to Parent [Member]
STOCKHOLDERS’ EQUITY:
us-gaap_InterestAndDebtExpense
Interest and finance costs (Note 16)
Total
Property, Plant and Equipment, Type [Axis]
us-gaap_NonoperatingIncomeExpense
Total other expenses
Property, Plant and Equipment, Type [Domain]
Other, net
CURRENT ASSETS:
us-gaap_SaleOfStockPricePerShare
Sale of Stock, Price Per Share
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
Total cash, cash equivalents and restricted cash
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash, cash equivalents and restricted cash at beginning of the period
Cash, cash equivalents and restricted cash at end of the period
us-gaap_SaleLeasebackTransactionHistoricalCost
Sale Leaseback Transaction, Historical Cost
Net income
us-gaap_SaleLeasebackTransactionAccumulatedDepreciation
Sale Leaseback Transaction, Accumulated Depreciation
Interest income
us-gaap_SaleLeasebackTransactionNetBookValue
Sale Leaseback Transaction, Net Book Value, Total
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net increase / (decrease) in cash, cash equivalents and restricted cash
us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue
Voyage revenue
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net Cash provided by / (used in) Financing Activities
COMMITMENTS AND CONTINGENCIES (Note 13)
us-gaap_OperatingIncomeLoss
Operating income
invest_DerivativeNotionalAmount
Derivative, Notional Amount
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net Cash provided by Operating Activities
Prepayments and other
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net Cash provided by / (used in) Investing Activities
Current liabilities
Investment [Axis]
Counterparty Name [Axis]
Counterparty Name [Domain]
Current assets
Schedule of Derivatives In ASC 815 Cash Flow Hedging Relationships [Table Text Block]
Tabular disclosure of the effective portion of the gains and losses on derivative instruments designated (and non-derivative instruments) designated and qualifying in cash flow hedges and net investment hedges that was recognized in other comprehensive income (loss) as well as the ineffective portion recognized in the income statement during the current period.
Non-current assets
us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets
Total assets
cmre_InvestmentStatedInterestRatePayableQuarterly
Investment Stated Interest Rate, Payable Quarterly
Portion of the stated investment interest rate that is payable quarterly.
Sale Leaseback Transaction, Name [Domain]
cmre_InvestmentStatedInterestRate
Investment Stated Interest Rate
The stated interest rate of an investment.
Schedule of Derivatives Not Designated as Hedging Instruments under ASC 815 [Table Text Block]
Tabular disclosure of the gain and losses on derivative instruments not designated as hedging instruments that was recognized in the income statement during the current period.
cmre_AccruedRevenueNet
Accrued Revenue, Net
cmre_AmortizationOfDeferredGain
Amortization of Deferred Gain
The amortization charged against the deferred gain recorded during the reporting period.
Credit Facility [Member]
Facilities that provide capital to borrowers without the need to structure a loan for each borrowing.
Investment [Domain]
cmre_InvestmentInterestRateStatedPercentageDeferredAccrual
Investment Interest Rate, Stated Percentage, Deferred Accrual
The portion of investment interest rate that accrues quarterly, but payment is deferred until maturity.
Sale Leaseback Transaction, Description [Axis]
us-gaap_PaymentsOfDividends
Dividends paid
Equity Method Investments and Joint Ventures Disclosure [Text Block]
Equity Method Investments [Table Text Block]
EXPENSES:
us-gaap_UnbilledReceivablesNotBillableAmountExpectedToBeCollectedInNextRollingTwelveMonths
Accrued Revenue for 2019
Retained Earnings [Member]
us-gaap_UnbilledReceivablesNotBillableAtBalanceSheetDate
Total
Additional Paid-in Capital [Member]
Common Stock [Member]
Preferred Stock [Member]
Equity Components [Axis]
Equity Component [Domain]
cmre_DebtAgreementMaximumBorrowingCapacity
Debt Agreement, Maximum Borrowing Capacity
Maximum borrowing capacity under a debt agreement on the amount that could be borrowed with a combination of, but not limited to, a line of credit and term loan.
Other financing arrangements
Other Long-term Debt, Total
us-gaap_LongTermDebt
Total long-term debt, net
cmre_AmortizationOfPrepaidLeaseRentals
Less: Amortization of prepaid lease rentals
The expense charged against prepaid lease rentals over the lease term.
Unearned revenue (Note 12)
Less current portion
Unearned revenue, net of current portion (Note 12)
Non-current portion
us-gaap_PaymentsOfFinancingCosts
Payment of financing costs
Vessels and advances, net [Text block]
Disclosure of vessels net of accumulated depreciation, additions to vessels' cost and advances for vessel acquisitions and or vessels under construction.
Comprehensive Income (Loss) Note [Text Block]
Deferred Revenue, by Arrangement, Disclosure [Table Text Block]
Other comprehensive income:
Vessels and advances, net (Note 6)
This element includes vessels' book value net of accumulated depreciation and advances for vessel acquisitions and or under construction.
Sale Leaseback Transactions Regarding the Vessels Leonidio and Kyparissia [Member]
Refers to the sales leaseback regarding the vessels Leonidio and Kyparissia.
Schedule Vessels and Advances, Net [Table Text Block]
Tabular disclosure of the cost and accumulated depreciation of vessels that are used in the normal conduct of business to produce goods and services and not intended for resale and advances for vessel acquisitions and or vessels under construction.
us-gaap_DeferredFinanceCostsNet
Less: Financing costs, net
Reclassification to Interest and finance costs, effective portion
Swap effect loss / (gain)
Swap Interest Expense, Net
Interest expense for interest rate swaps qualifying for cash flow hedge during the reporting period.
cmre_CapitalCommitmentsAtPeriodEnd
Capital Commitments at Period End
Company's capital commitments at the end of the reporting period.
Unearned Revenue
us-gaap_DeferredRevenue
Add: Deferred financing costs, current portion
us-gaap_RepaymentsOfLongTermDebt
Repayments of Long-term Debt, Total
us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities
Repayment of long-term debt and finance leases
General and Administrative Expense [Member]
Long-term debt
Long-term Debt, Gross
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]
us-gaap_CommonStockDividendsPerShareCashPaid
Common Stock, Dividends, Per Share, Cash Paid
Debt Securities [Member]
Proceeds from long-term debt and finance leases
Income Statement Location [Axis]
Income Statement Location [Domain]
Minimum Contractual Charter for 2022
Minimum Contractual Charter for 2023
Minimum Contractual Charter for 2023 and thereafter
us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
Total
Minimum Contractual Charter for 2019
Minimum Contractual Charter for 2020
Minimum Contractual Charter for 2021
us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Weighted average number of shares, diluted (Note 15) (in shares)
Earnings per common share, basic and diluted (Note 15) (in dollars per share)
Statement [Table]
Statement of Financial Position [Abstract]
Weighted average number of shares, basic (Note 15) (in shares)
Business Acquisition [Axis]
Business Acquisition, Acquiree [Domain]
Statement of Cash Flows [Abstract]
us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
Derivative Assets (Liabilities), at Fair Value, Net, Total
Annual repayment for 2019
Statement of Stockholders' Equity [Abstract]
us-gaap_PreferredStockDividendsPerShareCashPaid
Preferred Stock, Dividends, Per Share, Cash Paid
Income Statement [Abstract]
us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
Other comprehensive income / (loss) for the period
Annual repayment for 2021
Annual repayment for 2022
Annual repayment for 2023
Annual repayment for 2024 and thereafter
Michigan, Trader, Megalopolis, Marathopolis, Maersk Kleven and Maersk Kotka [Member]
Refers to information regarding the vessels Michigan, Trader, Megalopolis, Marathopolis, Maersk Kleven and Maersk Kotka.
us-gaap_ProceedsFromIssuanceOfDebt
Proceeds from Issuance of Debt
Annual repayment for 2020
Triton, Titan, Talos, Taurus, and Theseus [Member]
Represents information related to Triton, Titan, Talos, and Theseus.
cmre_NumberOfVesselsUnderSharePurchaseAgreement
Number of Vessels Under Share Purchase Agreement
Represents number of vessels under share purchase agreement.
us-gaap_FinanceLeaseInterestExpense
Finance Lease, Interest Expense
us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares
us-gaap_FinanceLeaseLiabilityPaymentsDue
Capital lease payments Total
us-gaap_FinanceLeaseRightOfUseAssetAmortization
Finance Lease, Right-of-Use Asset, Amortization
us-gaap_DerivativeAverageForwardExchangeRate1
Derivative, Average Forward Exchange Rate
us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive
Capital lease payments 2023
us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive
Capital lease payments 2024 and thereafter
us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Total
us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount
Less: Amount of interest (MSC Azov, MSC Ajaccio, MSC Amalfi, Leonidio and Kyparissia)
Tranche B and C Term Loan [Member]
Represents Tranche B and C loan agreement in consortium of banks.
us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo
Capital lease payments 2020
us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree
Capital lease payments 2021
us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour
Capital lease payments 2022
us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage
Finance Lease, Liability, Maturity [Table Text Block]
us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear
Capital lease payments 2019
us-gaap_LiabilitiesNoncurrent
Total non-current liabilities
us-gaap_DividendPayableDateToBePaidDayMonthAndYear
Dividends Payable, Date to be Paid
Cash Flows From Financing Activities:
Unrealized gain / (loss) on cash flow hedges, net (Notes 18 and 20)
us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
us-gaap_DividendsPayableDateDeclaredDayMonthAndYear
Dividends Payable, Date Declared
Purchase form York [Member]
Represents the information related to purchase form York.
us-gaap_DividendsPayableDateOfRecordDayMonthAndYear
Dividends Payable, Date of Record
us-gaap_DividendsPayableAmountPerShare
Dividends Payable, Amount Per Share
Return on equity method investments
Loan Agreement to Refinance Term Loan, Tranche B [Member]
Represents tranche B of loan agreement to refinance term loan.
Loan Agreement to Refinance Term Loan, Tranche A [Member]
Represents the tranche A of loan agreement to refinance term loan agreement.
Interest rate swaps, effective portion
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax
Loan Agreement to Refinance Term Loan [Member]
Represents a loan agreement to refinance term loan.
Singleton Shipping Co. and Tatum Shipping Co. Term Loan [Member]
Represents information related to term loan issued by Singleton shipping Co and Tatum shipping Co.
Dividends [Axis]
Dividends [Domain]
cmre_FinancialArrangementTotal
Financial Arrangement, Total
Represents the total amount of financial arrangement.
Series C Preferred Stock [Member]
us-gaap_AccountsReceivableBilledForLongTermContractsOrPrograms
Total
Financial Arrangement, Share Purchase Agreement [Member]
Represents financing arrangement related to share purchase agreement.
Series D Preferred Stock [Member]
Series E Preferred Stock [Member]
Reddick Shipping Co. and Verandi Shipping Co.Term Loan [Member]
Represents term loan issued by Riddick shipping Co. and Verandi Shipping Co.
Five Pre- and Post-delivery Financial Agreements [Member]
Represents information pertaining to five pre- and post-delivery financial agreements.
Series B Preferred Stock [Member]
cmre_UnbilledReceivablesNotBillableAmountExpectedToBeCollectedInYearSix
Accrued Revenue for 2024
Amount of receivables under long-term contracts that have not been billed and were not billable that are expected to be collected in the sixth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
cmre_UnbilledReceivablesNotBillableAmountExpectedToBeCollectedInYearFive
Accrued Revenue for 2023
Amount of receivables under long-term contracts that have not been billed and were not billable that are expected to be collected in the fifith fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
cmre_UnbilledReceivablesNotBillableAmountExpectedToBeCollectedInYearFour
Accrued Revenue for 2022
Amount of receivables under long-term contracts that have not been billed and were not billable that are expected to be collected in the forth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
cmre_AggregatePayableUponVesselsDelivery
Aggregate Payable Upon Vessel's Delivery
Represents the aggregate payable upon Vessel's delivery.
us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates
Equity method investments
us-gaap_StockholdersEquity
Total stockholders’ equity
Balance
Balance
us-gaap_PaymentsToAcquireEquityMethodInvestments
Payments to Acquire Equity Method Investments
Class of Stock [Axis]
Class of Stock [Domain]
Long-term debt, net of current portion and deferred financing costs (Note 10)
Total long-term debt, non-current, net
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Interest Rate Swap [Member]