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Deferred Costs and Other Intangibles, Net - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Amortization expense related to deferred leasing costs, in-place leases, trademark and database | $ 6,900 | $ 2,800 | $ 26,700 | $ 10,000
Noncash amortization of deferred financing costs |  |  | 7,912 | 5,769
Line of Credit |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Noncash amortization of deferred financing costs | $ 500 | $ 600 | $ 1,900 | $ 1,800

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