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DEFINED CONTRIBUTION PLAN	12 Months Ended
DEFINED CONTRIBUTION PLAN	Dec. 31, 2017
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]
DEFINED CONTRIBUTION PLAN	DEFINED CONTRIBUTION PLAN EastGroup maintains a 401(k) plan for its employees. The Company makes matching contributions of 50% of the employee’s contribution (limited to 10% of compensation as defined by the plan) and may also make annual discretionary contributions. The Company’s total expense for this plan was $672,000, $675,000 and $585,000 for 2017, 2016 and 2015, respectively.