DEVELOPMENT (Details)	9 Months Ended
Sep. 30, 2017
DEVELOPMENT [Abstract]
Percentage of Property Occupation by Tenants when Development Cost Ceased Being Capitalized	80.00%
Length of Time After Project Completion When Development Cost are no Longer Capitalized	1 year

Length of Time (in years) After Project Completion When Development Cost Ceased Being Capitalized

No definition available.

Name:	egp_LengthofTimeAfterProjectCompletionWhenDevelopmentCostCeasedBeingCapitalized
Namespace Prefix:	egp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration