Rentals under Operating Leases - Future Minimum Rentals to be Received under Noncancelable Tenant Operating Leases (Detail)
Dec. 31, 2015
USD ($)
Leases [Abstract]  
2016 $ 26,230,245
2017 23,246,692
2018 17,746,813
2019 13,430,529
2020 8,839,220
Thereafter 14,894,519
Total $ 104,388,018