Intangible Assets and Intangible Liabilities - Summary of Intangible Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Intangible assets:
Gross amount	$ 655,194	$ 689,894
Accumulated amortization	(143,987)	(20,509)
Intangible assets, Net	511,207	669,385
Intangible liabilities:
Gross amount	221,672	222,985
Accumulated amortization	(41,931)	(3,757)
Intangible Liabilities, Net	$ 179,741	$ 219,228