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Note 3 - Advances for Vessels Under Construction and Vessel Acquisition Deposits - Advances for Vessels Under Construction (Details)	3 Months Ended
	Mar. 31, 2017 USD ($)
Balance, Cost	$ 17,753,737
Advances for vessels under construction	668,402
Advances for vessel acquisition	3,810,765
New building vessel delivered during the period	(17,749,847)
Vessel delivered during the period	(4,473,448)
Balance, Cost	$ 9,609

X

- Definition

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

+ References

No definition available.

+ Details

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

X

- Definition

The accumulated monetary amount of advances made for vessel acquisitions.

+ References

No definition available.

+ Details

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

X

- Definition

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

+ References

No definition available.

+ Details

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

X

- Definition

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

+ References

No definition available.

+ Details

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

X

- Definition

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

+ References

No definition available.

+ Details

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