OTHER ASSETS (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Other Assets Components [Abstract]
Leasing costs (principally commissions), net of accumulated amortization	$ 22,694	$ 22,274
Straight-line rents receivable, net of allowance for doubtful accounts	20,608	18,694
Accounts receivable, net of allowance for doubtful accounts	3,427	2,460
Acquired in-place lease intangibles, net of accumulated amortization	7,679	3,046
Mortgage loans receivable, net of discount	4,110	4,131
Loan costs, net of accumulated amortization	3,229	3,358
Acquired above market lease intangibles, net of accumulated amortization	1,975	776
Goodwill	990	990
Prepaid expenses and other assets	8,085	6,680
Other Assets	72,797	62,409
Accumulated amortization - Leasing costs	16,603	18,566
Straight-line rents receivable allowance for doubtful accounts	351	282
Allowance for doubtful accounts	522	706
Accumulated Amortization Acquired In Place Lease Intangibles	4,478	6,443
Discount - Mortgage loans receivable	44	56
Accumulated amortization of loan costs	4,433	4,129
Accumulated amortization - Acquired above market lease intangibles	$ 929	$ 1,123