OTHER ASSETS (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Other Assets, Unclassified [Abstract]
Leasing costs (principally commissions)	$ 41,240	$ 39,297
Accumulated amortization of leasing costs	(17,228)	(16,603)
Leasing costs (principally commissions), net of accumulated amortization	24,012	22,694
Straight-line rents receivable	21,859	20,959
Allowance for doubtful accounts on straight-line rents receivable	(507)	(351)
Straight-line rents receivable, net of allowance for doubtful accounts	21,352	20,608
Accounts receivable	3,377	3,949
Allowance for doubtful accounts on accounts receivable	(541)	(522)
Accounts receivable, net of allowance for doubtful accounts	2,836	3,427
Acquired in-place lease intangibles	10,758	12,157
Accumulated amortization of acquired in-place lease intangibles	(4,958)	(4,478)
Acquired in-place lease intangibles, net of accumulated amortization	5,800	7,679
Acquired above market lease intangibles	2,805	2,904
Accumulated amortization of acquired above market lease intangibles	(1,240)	(929)
Acquired above market lease intangibles, net of accumulated amortization	1,565	1,975
Mortgage loans receivable	4,150	4,154
Discount on mortgage loans receivable	(38)	(44)
Mortgage loans receivable, net of discount	4,112	4,110
Loan costs	7,824	7,662
Accumulated amortization of loan costs	(4,367)	(4,433)
Loan costs, net of accumulated amortization	3,457	3,229
Goodwill	990	990
Prepaid expenses and other assets	11,799	8,085
Other Assets Total	$ 75,923	$ 72,797