This item represents the number of outstanding installments.

No definition available.

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- Definition

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

- Definition

Amount of the required periodic payment applied to principal.

+ References

+ Details

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Balance Type:	debit
Period Type:	duration

- Details

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- Details

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- Details

Name:	cmre_LongTermDebtTermLoansAxis=cmre_CostamarePartnersCreditFacilityMember
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- Details

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Long-term debt-Costamare Partners credit facility-Additional Information (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 08, 2015 USD ($)	Sep. 26, 2014 USD ($)
Revolving credit facility [Member]
Debt Instrument Carrying Amount	$ 52,463
Line of Credit Periodic Payment of Principal	$ 937
Number of outstanding installments	17
Term loan [Member]
Debt Instrument Carrying Amount	$ 124,379
Line of Credit Periodic Payment of Principal	$ 2,221
Number of outstanding installments	17
Costamare Partners credit facility [Member]
Maximum Borrowing Capacity			$ 180,000
Costamare Partners credit facility one [Member]
Maximum Borrowing Capacity		$ 176,842