Emergence from Chapter 11 and Fresh Start Accounting - Reconciliation of Enterprise Value to Estimated Fair Value of Successor Common Stock (Details) - Successor $ / shares in Units, $ in Thousands	Dec. 31, 2016 USD ($) $ / shares shares
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) | shares	25,998,844
Per share value (in dollars per share) | $ / shares	$ 15.94