Annual report pursuant to section 13 and 15(d)

Rentals under Operating Leases - Future Minimum Rentals to be Received under Noncancelable Tenant Operating Leases (Detail)

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Rentals under Operating Leases - Future Minimum Rentals to be Received under Noncancelable Tenant Operating Leases (Detail) (USD $)
Dec. 31, 2013
Leases [Abstract]  
2014 $ 11,433,933
2015 10,606,130
2016 9,204,679
2017 7,644,646
2018 4,905,993
Thereafter 33,298,872
Total $ 77,094,253