Other Assets, Net (Estimated Aggregate Amortization Expense Narrative) (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Straight-line rent receivable	$ 15,800,000rpt_StraightLineRentIncomeReceivables	$ 15,100,000rpt_StraightLineRentIncomeReceivables
Prepaid and other deferred expenses	7,054,000us-gaap_PrepaidExpenseAndOtherAssets	4,629,000us-gaap_PrepaidExpenseAndOtherAssets
Cash flow hedge	537,000	2,244,000
Goodwill	2,100,000us-gaap_Goodwill
Deferred leasing costs	$ 2,900,000us-gaap_DeferredCostsLeasingGross

- Definition

For an unclassified balance sheet, this element represents costs incurred by the lessor that are (a) costs to originate a lease incurred in transactions with independent third parties that (i) result directly from and are essential to acquire that lease and (ii) would not have been incurred had that leasing transaction not occurred and (b) certain costs directly related to specified activities performed by the lessor for that lease. Those activities are: evaluating the prospective lessee's financial condition; evaluating and recording guarantees, collateral, and other security arrangements; negotiating lease terms; preparing and processing lease documents; and closing the transaction. This amount is before considering accumulated amortization representing the periodic charge to earnings to recognize the deferred costs over the term of the related lease.

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