DEVELOPMENT (Details)	Jun. 30, 2011
DEVELOPMENT [Abstract]
Percentage of Property Occupation by Tenants when Development Cost Ceased Being Capitalized (in hundredths)	80.00%
Length of Time After Project Completion When Development Cost are no Longer Capitalized (in years)	one

Name:

egp_LengthOfTimeAfterProjectCompletionWhenDevelopmentCostCeasedBeingCapitalized

Namespace Prefix:

egp

Data Type:

xbrli:stringItemType

Balance Type:

na

Period Type:

instant