Emergence from Chapter 11 and Fresh Start Accounting - Reconciliation of Enterprise Value to Estimated Fair Value of Successor Common Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fresh-Start Adjustment [Line Items]
Shares outstanding (in shares)	26,219,129	25,998,844
Successor
Fresh-Start Adjustment [Line Items]
Enterprise value		$ 525,000
Plus: Cash and cash equivalents and restricted cash		101,304
Other assets		11,324
Fair value of invested capital		637,628
Less: Fair value of Term Loan		(152,838)
Less: Fair value of Capital Leases		(70,382)
Stockholders' equity at December 31, 2016		$ 414,408
Shares outstanding (in shares)		25,998,844
Per share value (in dollars per share)		$ 15.94

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Postconfirmation, Cash and Cash Equivalents and Restricted Cash and Cash Equivalents, Current

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Reorganization Value, Enterprise Value

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of noncurrent capital lease obligations at the balance sheet date after fresh-start adjustments.

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Amount of other noncurrent assets at the balance sheet date after fresh-start adjustments.

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Total stockholders' equity at the balance sheet date after fresh-start adjustments.

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Price of a single share of a number of saleable stocks of a company.

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