Summary of Significant Accounting Policies - Summarized Unaudited Financial Information for the Equity Method Investments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Operating expenses	$ 83,971	$ 120,972
Operating loss	(40,533)	(87,123)
Other	(21,425)	115,678
Equity Method Investments
Schedule of Equity Method Investments [Line Items]
Current assets	56,800		$ 28,123
Non-current assets	10,672		1,539
Total assets	67,472		29,662
Current liabilities	7,592		6,274
Net assets	59,880		$ 23,388
Revenues	282	636
Operating expenses	17,660	84,069
Operating loss	(17,378)	(83,433)
Other	3	(1)
Net loss	$ (17,375)	$ (83,434)