Income Taxes (Details 3) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Summary of net deferred tax asset (liability)
Current deferred tax assets	$ 0	$ 7,688
Deferred Tax Liabilities, Net, Noncurrent	222,338	168,349
Non-current deferred tax assets	14,076	5,482
Non-current deferred tax liability	(236,414)	(173,831)
Non-current deferred tax liability, net	(222,338)	(168,349)
Net deferred tax liability	$ (222,338)	$ (160,661)