OTHER ASSETS (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Other Assets, Unclassified [Abstract]
Leasing costs (principally commissions)	$ 41,208	$ 39,297
Accumulated amortization of leasing costs	(17,429)	(16,603)
Leasing costs (principally commissions), net of accumulated amortization	23,779	22,694
Straight-line rents receivable	22,152	20,959
Allowance for doubtful accounts on straight-line rents receivable	(502)	(351)
Straight-line rents receivable, net of allowance for doubtful accounts	21,650	20,608
Accounts receivable	3,568	3,949
Allowance for doubtful accounts on accounts receivable	(541)	(522)
Accounts receivable, net of allowance for doubtful accounts	3,027	3,427
Acquired in-place lease intangibles	10,429	12,157
Accumulated amortization of acquired in-place lease intangibles	(5,029)	(4,478)
Acquired in-place lease intangibles, net of accumulated amortization	5,400	7,679
Acquired above market lease intangibles	2,438	2,904
Accumulated amortization of acquired above market lease intangibles	(951)	(929)
Acquired above market lease intangibles, net of accumulated amortization	1,487	1,975
Mortgage loans receivable	4,150	4,154
Discount on mortgage loans receivable	(36)	(44)
Mortgage loans receivable, net of discount	4,114	4,110
Loan costs	8,477	7,662
Accumulated amortization of loan costs	(4,655)	(4,433)
Loan costs, net of accumulated amortization	3,822	3,229
Goodwill	990	990
Prepaid expenses and other assets	5,180	8,085
Other Assets Total	$ 69,449	$ 72,797