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Note 1 - Basis of Presentation and General Information (Details Textual) $ in Thousands	Jun. 30, 2017 USD ($)
Working Capital Deficit	$ 3,420
Commitments and Vessel Sales, Draw-down Capacity	4,000
Kamsarmax Newbuilding Vessel [Member]
Accounts Payable	$ 20,250
Friends Investment Company Inc. [Member]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	31.80%

X

- Definition

The amount of proceeds the company may draw upon related to certain commitments and vessel sales.

+ References

No definition available.

+ Details

Name:	esea_CommitmentsAndVesselSalesDrawdownCapacity
Namespace Prefix:	esea_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Represents the working capital deficit.

+ References

No definition available.

+ Details

Name:	esea_WorkingCapitalDeficit
Namespace Prefix:	esea_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.15(a))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.15(5))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=esea_KamsarmaxNewbuildingVesselMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dei_LegalEntityAxis=esea_FriendsInvestmentCompanyIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: