XML 43 R31.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Deferred Charges (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2015
Deferred Charges Disclosure [Abstract]: |
Schedule of deferred charges |
|  | Financing Costs |  |  | Dry-docking and Special Survey Costs |  |  | Total |
Balance, December 31, 2014 |  |  | 7,902 |  |  |  | 20,773 |  |  |  | 28,675 |
Additions |  |  | - |  |  |  | 2,650 |  |  |  | 2,650 |
Amortization |  |  | (946) |  |  |  | (3,583) |  |  |  | (4,529) |
Balance, June 30, 2015 |  |  | 6,956 |  |  |  | 19,840 |  |  |  | 26,796 |

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

X
- Definition 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. + References No definition available. + Details
Name: | cmre_ScheduleDeferredChargesTableTextBlock
Namespace Prefix: | cmre_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration