OTHER ASSETS (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Summary of Other Assets [Abstract]
Leasing costs (principally commissions)	$ 40,549	$ 39,297
Accumulated amortization of leasing costs	(17,064)	(16,603)
Leasing costs (principally commissions), net of accumulated amortization	23,485	22,694
Straight-line rents receivable	21,429	20,959
Straight-line rent receivable allowance for doubtful accounts	(448)	(351)
Straight-line rent receivable, net of allowance for doubtful accounts	20,981	20,608
Accounts receivable	3,670	3,949
Allowance for doubtful accounts	(536)	(522)
Accounts receivable, net of allowance for doubtful accounts	3,134	3,427
Acquired in-place lease intangibles	10,991	12,157
Acquired in place lease intangibles, accumulated amortization	(4,214)	(4,478)
Acquired in-place lease intangibles, net of accumulated amortization	6,777	7,679
Acquired above market lease intangibles	2,831	2,904
Accumulated amortization - Acquired above market lease intangibles	(1,062)	(929)
Acquired above market lease intangibles, net of accumulated amortization	1,769	1,975
Mortgage loans receivable	4,150	4,154
Discount - Mortgage loans receivable	(41)	(44)
Mortgage loans receivable, net of discount	4,109	4,110
Loan costs	8,376	7,662
Accumulated amortization of loan costs	(4,647)	(4,433)
Loan costs, net of accumulated amortization	3,729	3,229
Goodwill	990	990
Prepaid expenses and other assets	7,327	8,085
Other Assets Total	$ 72,301	$ 72,797