Note 3 - Advances for Vessels Under Construction and Vessel Acquisition Deposits - Summary of Advances for Vessels Under Construction (Details)	6 Months Ended
Jun. 30, 2017 USD ($)
Balance	$ 17,753,737
Advances for vessels under construction	3,016,069
Advances for vessel acquisitions	3,810,765
New building vessel delivered during the period	(17,788,540)
Vessels delivered during the period	(4,473,448)
Balance	$ 2,318,583

The amount of advances for new building vessel delivered during the period.

No definition available.

Name:	esea_AdvancesForNewBuildingVesselDelivered
Namespace Prefix:	esea_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The accumulated monetary amount of advances made for vessel acquisitions.

No definition available.

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

Represents advances made by the company for vessels that are acquired during the period.

No definition available.

Name:	esea_AdvancesForVesselAcquisitionDuringThePeriod
Namespace Prefix:	esea_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Represents advances made by the company for vessels that are currently under construction.

No definition available.

Name:	esea_AdvancesForVesselsUnderConstruction
Namespace Prefix:	esea_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The monetary amount related to vessels that have been delivered during the period.

No definition available.

Name:	esea_VesselsDeliveredDuringThePeriod
Namespace Prefix:	esea_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration