Investment in Real Estate - Summary of Intangible Assets (Liabilities) Subject to Amortization in the Period of Acquisition (Detail) - 6 months ended Jun. 30, 2015 - USD ($) $ in Thousands	Total
In-Place Leases
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired finite lived intangible assets, fair value	$ 999
Acquired finite lived intangible assets, weighted average life	54 months
Below Market Leases
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired finite lived intangible assets, fair value	$ (107)
Acquired finite lived intangible assets, weighted average life	63 months