Summary of Acquisitions of Real Estate Held for Investment (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014
Transaction to Real Estate Investments [Line Items]
Purchase Price	$ 36,743
TENNESSEE | Single-tenant retail [Member]
Transaction to Real Estate Investments [Line Items]
Date of Acquisition	Apr. 30, 2014
Purchase Price	19,000
Remaining Lease Term	2022	[1]
VIRGINIA | Multi-tenant retail [Member]
Transaction to Real Estate Investments [Line Items]
Date of Acquisition	Jun. 30, 2014
Purchase Price	$ 17,743
Remaining Lease Term	2021	[1]

[1] Does not include extension options.