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Investments in Real Estate - Proforma Financial Information (Detail) (USD $)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]    
Revenues $ 13,992,000 $ 9,659,000
Net operating income 9,251,000 6,767,000
Net income $ 1,707,000 $ 1,593,000