XML 59 R68.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Commitments and Contitngencies - Long-Term Time Charters-Additional Information (Details) - Long-term time charters (including charter agreements vessels under construction) [Member] | 6 Months Ended
--- | ---
Jun. 30, 2015
Time charter arrangements remaining terms period | up to 105 months
Revenue days per annum | 365 Days
Redelivery dates | earliest possible redelivery dates

X
- Definition This item represents the assumption used in the calculation of the contracted revenue regarding the redelivery dates used (i.e the earliest possible, the latest possible etc.) in order to be consistent with the previous periods. + References No definition available. + Details
Name: | cmre_RedeliveryDates
Namespace Prefix: | cmre_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of assumed revenue days used in the calculation of the contracted revenue. + References No definition available. + Details
Name: | cmre_RevenueDaysPerAnnum
Namespace Prefix: | cmre_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition 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. + References No definition available. + Details
Name: | cmre_TimeCharterArrangementsRemainingTermsPeriod
Namespace Prefix: | cmre_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | cmre_CommitmentContingenciesLongTermTimeCharterAxis=cmre_LongTermTimeChartersIncludingCharterAgreementsVesselsUnderConstructionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |