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- Other Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Other Liabilities Disclosure [Abstract]    
Non-current portion of deferred revenues $ 7,735 $ 8,933
Straight-line management fee waiver 16,180 11,974
Other 2,142 2,836
Other liabilities $ 26,057 $ 23,743