Equity Investments in Unconsolidated Joint Ventures - Summary of Combined Financial Information of Unconsolidated Entities, Statements of Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]
Total revenue	$ 10,625		$ 10,924
Total expenses	7,296	[1]	17,926	[1]
Income (loss) before other income, expense, and discontinued operations	3,329		(7,002)
Interest expense	(1,793)		(1,875)
Gain on extinguishment of debt	0		529
Amortization of deferred financing fees	(74)		(75)
Gain on sale of real estate	7,463	[2]	0	[2]
Net income (loss)	8,925		(8,423)
RPT's share of earnings (loss) from unconsolidated joint ventures	$ 2,660		$ (1,535)

[1] The higher expenses for the three months ended March 31, 2014 were due to the demolition of a portion of a center for redevelopment and the commensurate acceleration of depreciation in that period.

[2] See dispositions below for details of the transaction.