Supplemental Detail for Certain Components of Consolidated Balance Sheets (Details 4) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Accounts payable and accrued expenses
Accrued costs on properties under development	$ 18,011	$ 14,058
Other items	38,333	30,047
Total accounts payable and accrued expenses	123,287	102,511
Acquired lease intangible liabilities, net
Acquired below-market leases	243,025	158,703
Accumulated amortization of acquired below-market leases	(22,556)	(10,453)
Acquired lease intangible liabilities	220,469o_FiniteLivedIntangibleLiabilitiesNet	148,250o_FiniteLivedIntangibleLiabilitiesNet
Other liabilities
Rent received in advance	36,122us-gaap_AdvanceRent	31,144us-gaap_AdvanceRent
Preferred units issued upon acquisition of ARCT	6,750	6,750
Security deposits	5,876us-gaap_SecurityDepositLiability	6,136us-gaap_SecurityDepositLiability
Capital lease obligations	4,397us-gaap_ContractualObligation
Total other liabilities	53,145us-gaap_OtherLiabilities	44,030us-gaap_OtherLiabilities
Note
Accounts payable and accrued expenses
Interest payable	63,919	55,616
Mortgages Payable
Accounts payable and accrued expenses
Interest payable	$ 3,024	$ 2,790

Represents the accumulated amortization of intangible liabilities below-market leases.

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Represents a liability associated with the acquisition of an off-market lease at below market lease at the date of acquisition.

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No definition available.

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Amount after amortization of liabilities, lacking physical substance with a finite life during the reporting period.

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Amount of preferred units issued upon business acquisition.

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Sum of the carrying values as of the balance sheet date of obligations incurred through that date, including liabilities incurred and payable to vendors for goods and services received, taxes, interest, rent and utilities, compensation costs, payroll taxes and fringe benefits (other than pension and postretirement obligations), contractual rights and obligations, and statutory obligations.

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Amount at the balance sheet date that has been received by the entity that represents rents paid in advance.

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Carrying value as of the balance sheet date of obligations incurred and payable for the acquisition of merchandise, materials, supplies and services pertaining to construction projects such as a housing development or factory expansion not classified as trade payables.

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Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

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No definition available.

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Amount of interest payable on debt, including, but not limited to, trade payables.

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Carrying value as of the balance sheet date of obligations, including trade payables, incurred through that date and due within one year (or in the operating cycle if longer) arising from transactions not otherwise specified in the taxonomy.

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The aggregate carrying amount, as of the balance sheet date, of liabilities not separately disclosed in the balance sheet.

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This element represents money paid in advance to protect the provider of a product or service, such as a lessor, against damage or nonpayment by the buyer or tenant (lessee) during the term of the agreement. Such damages may include physical damage to the property, theft of property, and other contractual breaches. Security deposits held may be interest or noninterest bearing.

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