Intangible Assets (Including Affiliate) - Intangible Assets - Affiliate (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Related Party Transaction [Line Items]
Intangible assets	$ 5,076	$ 5,076
Less accumulated amortization	(1,375)	(1,146)
Total intangible assets, net	3,701	3,930
Affiliated Entity
Related Party Transaction [Line Items]
Intangible assets	81,109	81,109
Less accumulated amortization	(28,835)	(28,112)
Total intangible assets, net	$ 52,274	$ 52,997