ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Accounts Payable and Accrued Liabilities [Abstract]
Property taxes payable	$ 11,874	$ 9,840
Development costs payable	3,229	5,928
Interest payable	2,682	2,736
Dividends payable on unvested restricted stock	1,436	1,415
Other payables and accrued expenses	5,074	11,286
Accounts payable and accrued expenses	$ 24,295	$ 31,205