OTHER ASSETS (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Summary of Other Assets [Abstract]
Leasing costs (principally commissions), net of accumulated amortization	$ 22,776	$ 22,274
Straight-line rent receivable, net of allowance for doubtful accounts	20,208	18,694
Accounts receivable, net of allowance for doubtful accounts	2,629	2,460
Mortgage loans receivable, net of discount	4,114	4,131
Loan costs, net of accumulated amortization	3,195	3,358
Acquired in-place lease intangibles, net of accumulated amortization	2,672	3,046
Goodwill	990	990
Prepaid expenses and other assets	5,719	7,456
Other Assets Total	62,303	62,409
Accumulated amortization of leasing costs	15,799	18,566
Straight-line rent receivable allowance for doubtful accounts	311	282
Allowance for doubtful accounts	484	706
Discount - Mortgage loans receivable	46	56
Accumulated amortization of loan costs	4,173	4,129
Accumulated amortization - Acquired in-place lease intangibles	$ 8,136	$ 6,443