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PRINCIPLES OF CONSOLIDATION (Policies)
9 Months Ended
Sep. 30, 2011
PRINCIPLES OF CONSOLIDATION [Abstract] 
Consolidation Policy
The consolidated financial statements include the accounts of EastGroup, its wholly-owned subsidiaries and its investment in any joint ventures in which the Company has a controlling interest.  At September 30, 2011 and December 31, 2010, the Company had a controlling interest in two joint ventures: the 80% owned University Business Center and the 80% owned Castilian Research Center.  The Company records 100% of the joint ventures' assets, liabilities, revenues and expenses with noncontrolling interests provided for in accordance with the joint venture agreements.  The equity method of accounting is used for the Company's 50% undivided tenant-in-common interest in Industry Distribution Center II.  All significant intercompany transactions and accounts have been eliminated in consolidation.