Equity Investments in Unconsolidated Joint Ventures - Summary of Combined Financial Information of Unconsolidated Entities, Balance Sheets (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
ASSETS
Investment in real estate, net	$ 43,001	$ 43,995
Other assets	3,234	3,712
Total Assets	46,235	47,707
LIABILITIES AND OWNERS' EQUITY
Other liabilities	488	219
Owners' equity	45,747	47,488
Total Liabilities and Owners' Equity	46,235	47,707
RPT's equity investments in unconsolidated joint ventures	$ 2,734	$ 3,150