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Note 17 - Discontinued Operations - Results of Discontinued Operations (Details) (Parentheticals) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Drybulk Fleet [Member] |  |  |
General and administrative expenses, related party |  | $ 731,456 | $ 693,524
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff [Member] |  |  |
Commissions - related party |  | 324,178 | 253,503
Vessel operating expenses - related party |  | $ 115,026 | $ 102,131

X
- Definition Amount of commissions attributable to disposal group, including, but not limited to, discontinued operation for related party. + References No definition available. + Details
Name: | esea_DisposalGroupIncludingDiscontinuedOperationCommissionsRelatedParty
Namespace Prefix: | esea_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of general and administrative expense attributable to disposal group, including, but not limited to, discontinued operation for related party. + References No definition available. + Details
Name: | esea_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpenseRelatedParty
Namespace Prefix: | esea_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of vessel operating expenses attributable to disposal group, including, but not limited to, discontinued operation for related party. + References No definition available. + Details
Name: | esea_DisposalGroupIncludingDiscontinuedOperationVesselOperatingExpensesRelatedParty
Namespace Prefix: | esea_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=esea_DrybulkFleetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DisposalGroupClassificationAxis=us-gaap_DiscontinuedOperationsDisposedOfByMeansOtherThanSaleSpinoffMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |