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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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