Supplemental Detail for Certain Components of Consolidated Balance Sheets (Details 2) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Other assets, net
Restricted escrow deposits	$ 36,540,000	$ 10,158,000
Deferred financing costs, net	23,274,000us-gaap_DeferredFinanceCostsNet	21,323,000us-gaap_DeferredFinanceCostsNet
Notes receivable issued in connection with property sales	18,342,000	19,078,000
Prepaid expenses	14,137,000	11,674,000
Impounds related to mortgages payable	5,789,000us-gaap_EscrowDeposit	5,555,000us-gaap_EscrowDeposit
Corporate assets, net	2,600,000o_OtherCorporateAssetsNet	1,259,000o_OtherCorporateAssetsNet
Loans receivable		48,844,000us-gaap_NotesReceivableNet
Other items	2,797,000us-gaap_OtherAssetsMiscellaneous	2,096,000us-gaap_OtherAssetsMiscellaneous
Total other assets	107,650,000us-gaap_OtherAssets	127,133,000us-gaap_OtherAssets
Credit Facility
Other assets, net
Credit facility origination costs, net	$ 4,171,000	$ 7,146,000

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Other assets classified as assets of the corporation and not otherwise separately disclosed, net of accumulated depreciation and amortization.

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No definition available.

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The carrying amount as of the balance sheet date of credit card origination costs, net of both related credit card fees and accumulated amortization.

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For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain.

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The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

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Amount before allowance of commercial loans issued to businesses to acquire, develop, construct, improve, or refinance land or building. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans covered under loss sharing agreements.

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Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.

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The aggregate carrying amounts, as of the balance sheet date, of assets not separately disclosed in the balance sheet.

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Amount of other miscellaneous assets.

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Carrying amount as of the balance sheet date of expenditures made in advance of when the economic benefit of the cost will be realized, and which will be expensed in future periods with the passage of time or when a triggering event occurs.

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The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element.

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