OTHER ASSETS (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Other Assets, Unclassified [Abstract]
Leasing costs (principally commissions)	$ 46,407	$ 41,290
Accumulated amortization of leasing costs	(18,242)	(17,543)
Leasing costs (principally commissions), net of accumulated amortization	28,165	23,747
Straight-line rents receivable	23,263	22,153
Allowance for doubtful accounts on straight-line rents receivable	(388)	(409)
Straight-line rents receivable, net of allowance for doubtful accounts	22,875	21,744
Accounts receivable	3,365	3,477
Allowance for doubtful accounts on accounts receivable	(320)	(373)
Accounts receivable, net of allowance for doubtful accounts	3,045	3,104
Acquired in-place lease intangibles	17,300	11,848
Accumulated amortization of acquired in-place lease intangibles	(4,628)	(4,516)
Acquired in-place lease intangibles, net of accumulated amortization	12,672	7,332
Acquired above market lease intangibles	1,893	2,443
Accumulated amortization of acquired above market lease intangibles	(613)	(976)
Acquired above market lease intangibles, net of accumulated amortization	1,280	1,467
Mortgage loans receivable	9,278	9,357
Discount on mortgage loans receivable	(25)	(34)
Mortgage loans receivable, net of discount	9,253	9,323
Loan costs	8,120	8,476
Accumulated amortization of loan costs	(3,919)	(4,960)
Loan costs, net of accumulated amortization	4,201	3,516
Interest rate swap assets	1,274	0
Receivable for development infrastructure cost reimbursements	1,199	0
Goodwill	990	990
Prepaid expenses and other assets	4,586	7,093
Other Assets Total	$ 89,540	$ 78,316