Supplemental Detail for Certain Components of Consolidated Balance Sheets - Accounts Payable, Acquired Lease Intangibles, and Other Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Accounts payable and accrued expenses
Accrued costs on properties under development	$ 9,976	$ 18,011
Property taxes payable	13,354	11,633
Other items	24,197	25,155
Total accounts payable and accrued expenses	115,826	123,287
Acquired lease intangible liabilities, net
Acquired below-market leases	288,412	243,025
Accumulated amortization of acquired below-market leases	(37,496)	(22,556)
Acquired lease intangible liabilities	250,916	220,469
Other liabilities
Rent received in advance	42,840	36,122
Security deposits	6,418	5,876
Capital lease obligations	4,707	4,397
Preferred units issued upon acquisition of ARCT		6,750
Total other liabilities	53,965	53,145
Note payable
Accounts payable and accrued expenses
Notes payable - interest payable	61,486	63,919
Mortgages, term loans, credit line, interest payable, and interest rate swaps
Accounts payable and accrued expenses
Notes payable - interest payable	$ 6,813	$ 4,569