Aggregate Allocation of Purchase Price (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014
Transaction to Real Estate Investments [Line Items]
Total purchase price	$ 36,743
Land
Transaction to Real Estate Investments [Line Items]
Total purchase price	9,711
Buildings
Transaction to Real Estate Investments [Line Items]
Total purchase price	25,972
Site Improvements
Transaction to Real Estate Investments [Line Items]
Total purchase price	2,548
Real Estate Held for Investment
Transaction to Real Estate Investments [Line Items]
Total purchase price	38,231
Leaseholds and Leasehold Improvements [Member]
Transaction to Real Estate Investments [Line Items]
Total purchase price	7,698
Below Market Lease Value
Transaction to Real Estate Investments [Line Items]
Total purchase price	$ (9,186)