Earnings Per Common Share - Computation of Basic Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Income from continuing operations	$ 9,944		$ 2,761
Net income from continuing operations attributable to noncontrolling interest	(277)		(89)
Allocation of continuing income to restricted share awards	(60)		(50)
Income attributable to RPT	9,607		2,622
Preferred share dividends	(1,812)		(1,812)
NET INCOME AVAILABLE TO COMMON SHAREHOLDERS	7,855		860
Weighted average shares outstanding, Basic (in shares)	77,925		67,070
Stock options and restricted stock awards using the treasury method (in shares)	203		244
Weighted average shares outstanding, Diluted	78,128	[1]	67,314	[1]
Income per common share, Basic (in USD per share)	$ 0.10		$ 0.01
Income per common share, Diluted (in USD per share)	$ 0.10		$ 0.01
Basic Shares [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
NET INCOME AVAILABLE TO COMMON SHAREHOLDERS	$ 7,795		$ 810

[1] The assumed conversion of preferred shares is anti-dilutive for all periods presented and accordingly, has been excluded from the weighted average common shares used to compute diluted EPS.