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Deferred Costs and Other Intangibles, Net - Narrative (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Finite-Lived Intangible Assets [Line Items]        
Amortization expense related to deferred leasing costs, in-place leases, trademark and database $ 2,200 $ 12,300 $ 5,100 $ 19,800
Noncash amortization of deferred financing costs     4,410 5,279
Revolving Credit Facility | Line of Credit        
Finite-Lived Intangible Assets [Line Items]        
Noncash amortization of deferred financing costs $ 400 $ 700 $ 800 $ 1,300