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Summary of Investments in Real Estate (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Real Estate Properties [Line Items]    
Land $ 30,168 $ 30,168
Building 121,390 121,390
Furniture, fixtures and equipment 2,482 2,007
Total investment in real estate 154,040 153,565
Accumulated depreciation (13,949) (12,283)
Investments in real estate, net $ 140,091 $ 141,282