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Noncontrolling Interests - Variable interest entity (Details) - Accounting Standards Update ("ASU") 2015-02 - Consolidation (Topic 810): Amendments to the Consolidation Analysis - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Variable interest entity    
Net real estate $ 2,996,473 $ 3,040,903
Total assets 3,464,114 3,499,481
Total debt 250,002 251,047
Total liabilities $ 355,600 $ 364,797