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Future Minimum Rents Future minimum rent under non-cancelable operating leases (Details)
$ in Thousands
Dec. 31, 2015
USD ($)
Future minimum rent [Abstract]  
2016 $ 1,854,538
2017 1,815,632
2018 1,733,703
2019 1,666,019
2020 1,500,843
Thereafter $ 8,667,163