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Note 11 - Commitments and Contingencies (Detail) (USD $) In Millions, unless otherwise specified |  |  | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2013 DryDocking and Special Surveys - Occurence Frequency (Member) | Dec. 31, 2013 Offhire Day (Member) | Dec. 31, 2013 Minimum [Member] | Dec. 31, 2013 Maximum [Member]
Other Intangible Assets, Net (in Dollars) | $ 0.6 | $ 3.8 |  |  |  |
Number of Days Per Quarter |  |  |  | one | 20 | 25
Number of Years |  |  | two |  |  |

X
- Definition Number of Days Per Quarter + References No definition available. + Details
Name: | esea_NumberOfDaysPerQuarter
Namespace Prefix: | esea_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of Years + References No definition available. + Details
Name: | esea_NumberofYears
Namespace Prefix: | esea_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net carrying amount as of the balance sheet date of other indefinite-lived and finite-lived intangible assets that are not separately presented on the statement of financial position. + References No definition available. + Details
Name: | us-gaap_OtherIntangibleAssetsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant