Equity Investments in Unconsolidated Joint Ventures - Summary of Combined Financial Information of Unconsolidated Entities, Balance Sheets (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
ASSETS
Income producing properties, net	$ 373,398	$ 394,740
Cash, accounts receivable and other assets	21,529	23,102
Total Assets	394,927	417,842
LIABILITIES AND OWNERS' EQUITY
Mortgage notes payable	169,928	170,194
Other liabilities	6,284	7,625
Owners' equity	218,715	240,023
Total Liabilities and Owners' Equity	394,927	417,842
RPT's equity investments in unconsolidated joint ventures	$ 22,512us-gaap_EquityMethodInvestments	$ 28,733us-gaap_EquityMethodInvestments

Equity Method Investment, Summarized Financial Information, Cash, Accounts Receivable, and Other Assets

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Equity Method Investment Summarized Financial Information Liabilities, Mortgage Notes Payable

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Equity Method Investment Summarized Financial Information Liabilities Other Liabilities

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Equity Method Investment, Summarized Financial Information, Real Estate, Net

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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The amount of assets reported by an equity method investment of the entity.

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Amount of equity, excluding noncontrolling interest, attributable to the equity method investment of the entity.

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The amount of liabilities and equity reported by an equity method investment of the entity.

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