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Equity Investments - Summary Financial Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract]
Revenues	$ 14,791	$ 23,284
Operating income (loss)	(448,138)	411
Net income (loss)	(448,138)	$ 411
Equity Method Investment, Summarized Financial Information, Balance Sheet [Abstract]
Current assets	3,181
Noncurrent assets	70,812
Current liabilities	180
Noncurrent liabilities	$ 62,951

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