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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Significant Accounting Policies [Line Items]    
Advisor fees on gross offering proceeds 1.00%  
Offering proceeds $ 3,225  
Cost incurred by advisor 4,190  
Cost reimbursed $ 32  
Taxable income distributable to stockholders 90.00%  
Anti-dilutive shares outstanding 5,274,900 5,274,900
Building and Building Improvements
   
Significant Accounting Policies [Line Items]    
Useful life 40 years  
Equipment and fixtures | Minimum
   
Significant Accounting Policies [Line Items]    
Useful life 5 years  
Equipment and fixtures | Maximum
   
Significant Accounting Policies [Line Items]    
Useful life 10 years