COMPONENTS OF RENTAL INCOME AND EXPENSE Component of Rental Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Rental Income [Line Items]
Cost reimbursement	$ 7,093	$ 7,392	$ 20,006	$ 20,813
Percentage rent	504	533	1,324	1,259
Hotel revenue	9,984	9,017	27,010	24,142
Other	424	383	1,260	1,195
Total rental income	62,405	58,310	181,332	165,058
Total Retail
Rental Income [Line Items]
Minimum rents	17,384	17,019	51,971	49,866
Total Office
Rental Income [Line Items]
Minimum rents	20,736	18,219	61,534	50,974
Total Multifamily
Rental Income [Line Items]
Minimum rents	3,837	3,633	11,107	10,160
Total Mixed-Use
Rental Income [Line Items]
Minimum rents	$ 2,443	$ 2,114	$ 7,120	$ 6,649