Equity Investments in Unconsolidated Joint Ventures - Information of Fees Earned (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]
Management fees	$ 399us-gaap_ManagementFeesRevenue	$ 399us-gaap_ManagementFeesRevenue
Leasing fees	120rpt_LeasingFeesRevenue	59rpt_LeasingFeesRevenue
Construction fees	13rpt_ConstructionFeesRevenue	52rpt_ConstructionFeesRevenue
Total	$ 532rpt_FeesRevenue	$ 510rpt_FeesRevenue

Revenue, comprised of base and incentive revenue derived from the management of joint ventures, managing third-party properties, or another entity's operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(d))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Name:	us-gaap_ManagementFeesRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration