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Summary of Significant Accounting Policies - Reconciliation of Enterprise Value to Reorganization Value (Details) - Successor $ in Thousands	Oct. 01, 2016 USD ($)
Reconciliation Of Enterprise Value To Estimated Reorganization Value [Line Items]
Enterprise value	$ 1,089,808
Plus: cash and cash equivalents	563,372
Plus: other working capital liabilities	131,766
Plus: other long-term liabilities	8,549
Reorganization value of Successor assets	$ 1,793,495

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Amount of cash and cash equivalents at the balance sheet date after fresh-start adjustments.

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Total other noncurrent obligations at the balance sheet date after fresh-start adjustments.

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