Name:	dei_DocumentFiscalYearFocus
Namespace Prefix:	dei_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

Amount of loss reclassified from accumulated other comprehensive income (loss) to interest expense

No definition available.

Name:	egp_Amountoflossreclassifiedfromaccumulatedothercomprehensiveincomelosstointerestexpense
Namespace Prefix:	egp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Cash flow hedge amount estimated to be reclassified to interest expense in next 12 months

No definition available.

Name:	egp_CashFlowHedgeAmountEstimatedToBeReclassifiedToInterestExpenseInNext12Months
Namespace Prefix:	egp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Number of interest rate swaps

No definition available.

Name:	egp_Numberofinterestrateswaps
Namespace Prefix:	egp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Fair value as of the balance sheet date of all interest rate derivative assets designated as cash flow hedging instruments.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959

Name:	us-gaap_InterestRateCashFlowHedgeAssetAtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Fair value as of the balance sheet date of all interest rate derivative liabilities designated as cash flow hedging instruments.

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

Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e637-108580

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=109978405&loc=d3e80720-113993

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580

Name:	us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_BalanceSheetLocationAxis=us-gaap_OtherLiabilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	egp_InterestRateSwapIdentifierAxis=egp_A80millioninterestrateswapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	egp_InterestRateSwapIdentifierAxis=egp_A75millioninterestrateswapexecutedin2014Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	egp_InterestRateSwapIdentifierAxis=egp_A75millioninterestrateswapexecutedin2015Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	egp_InterestRateSwapIdentifierAxis=egp_A65millioninterestrateswapexecutedin2016Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	egp_InterestRateSwapIdentifierAxis=egp_A60millioninterestrateswapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	egp_InterestRateSwapIdentifierAxis=egp_A40millioninterestrateswap2016Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: