Emergence from Chapter 11 and Fresh Start Accounting - Cumulative Impact of Reorganization Adjustments (Details) $ in Thousands, shares in Millions	Dec. 31, 2016 USD ($) shares
Fresh-Start Adjustment [Line Items]
Percentage of successor common stock distributed	0.50%
Successor common stock subject to distribution | shares	15
Net Gain on Debt discharge
Fresh-Start Adjustment [Line Items]
Retained earnings impact	$ 540,293
Capital Lease Fees & Expenses
Fresh-Start Adjustment [Line Items]
Retained earnings impact	(62)
Fees for establishing the Fee Escrow Account
Fresh-Start Adjustment [Line Items]
Retained earnings impact	(5)
Issuance of warrants per terms of the Plan and the Warrant Agreement
Fresh-Start Adjustment [Line Items]
Retained earnings impact	(8,358)
Payment of Allowed Term Loan Claim on account of fees, charges, or other amounts payable under the Term Loan Agreement
Fresh-Start Adjustment [Line Items]
Retained earnings impact	(42)
Payment of closing fees & expenses for the Amended and Restated ABL Credit Agreement
Fresh-Start Adjustment [Line Items]
Retained earnings impact	(1,610)
Record distribution of 0.5% of the 15 million shares of Successor Common Stock (subject to dilution) to holders of Existing Equity Interests.
Fresh-Start Adjustment [Line Items]
Retained earnings impact	(1,372)
Restricted stock amortization expense
Fresh-Start Adjustment [Line Items]
Retained earnings impact	(216)
Record issuance of shares for initially vested RSUs under MIP
Fresh-Start Adjustment [Line Items]
Retained earnings impact	(9,861)
Reorganization Adjustments
Fresh-Start Adjustment [Line Items]
Retained earnings impact	$ 518,767