Supplemental Detail for Certain Components of Consolidated Balance Sheets (Details 4) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Accounts payable and accrued expenses
Property taxes payable	$ 19,181	$ 11,634
Accrued costs on properties under development	11,944	18,011
Other items	20,770	25,154
Total accounts payable and accrued expenses	97,219	123,287
Acquired lease intangible liabilities, net
Acquired below-market leases	274,739	243,025
Accumulated amortization of acquired below-market leases	(33,611)	(22,556)
Acquired lease intangible liabilities	241,128	220,469
Other liabilities
Rent received in advance	26,313	36,122
Security deposits	6,051	5,876
Capital lease obligations	4,629	4,397
Preferred units issued upon acquisition of ARCT		6,750
Total other liabilities	36,993	53,145
Note
Accounts payable and accrued expenses
Notes payable - interest payable	33,987	63,919
Mortgages, term loans, credit line
Accounts payable and accrued expenses
Mortgages, term loans, credit line - interest payable and interest rate swaps	$ 11,337	$ 4,569