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Note 11 - Subsequent Events (Details Textual)	1 Months Ended	6 Months Ended
	Aug. 31, 2018 USD ($)	Jun. 30, 2018
London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate		4.61%
Subsequent Event [Member] | Loan Agreement to Refinance Loans of Allendale Investments S.A. [Member]
Term Loan Facility, Maximum Borrowing Capacity	$ 30,000,000
Term Loan Facility, Additional Borrowing Capacity	15,000,000
Term Loan Facility, Total Maximum Borrowing Capacity with Option of Additional Amount Included	$ 45
Debt Instrument, Number of Quarterly Installment Payments	12
Debt Instrument, Periodic Payment, Total	$ 900,000
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid	$ 13,100,000
Subsequent Event [Member] | Loan Agreement to Refinance Loans of Allendale Investments S.A. [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	4.40%

X

- Definition

Number of quarterly installment payments agreed to under the debt instrument.

+ References

No definition available.

+ Details

Name:	esea_DebtInstrumentNumberOfQuarterlyInstallmentPayments
Namespace Prefix:	esea_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Additional borrowing capacity under the term loan facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

No definition available.

+ Details

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

X

- Definition

Maximum borrowing capacity under the term loan facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

No definition available.

+ Details

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

X

- Definition

Total maximum borrowing capacity with option of additional amount included under term loan facility.

+ References

No definition available.

+ Details

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

X

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of payment greater than the preceding installment payments to be paid at final maturity date of debt.

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=esea_LoanAgreementToRefinanceLoansOfAllendaleInvestmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: