Other Assets, Net - Summary of Other Assets, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred leasing costs	$ 168,344	$ 157,258
Accumulated amortization	(66,403)	(57,910)
Deferred leasing costs, net	101,941	99,348
Prepaid expenses	21,942	2,199
Identified intangible assets, net	143,000	3,063
Other	21,508	8,345
Total other assets, net	$ 288,391	$ 112,955