Interest Expense Components of Interest Expense (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Components of Interest Expense [Line Items]
Write off of Deferred Debt Issuance Cost				$ 600
Successor [Member]
Components of Interest Expense [Line Items]
Interest Expense, Borrowings		$ 515		905
Amortization of Debt Issuance Costs	[1]	800		988
Interest Paid, Capitalized		(41)		(81)
Interest Expense		$ 1,274		1,812
Write off of Deferred Debt Issuance Cost				$ 600
Predecessor [Member]
Components of Interest Expense [Line Items]
Interest Expense, Borrowings	[2]		$ 11,344		$ 34,649
Amortization of Debt Issuance Costs	[1]		20,920		22,189
Interest Paid, Capitalized			(43)		(183)
Interest Expense			32,221		56,655
Contractual Interest Expense on Prepetition Liabilities Not Recognized in Statement of Operations			23,500		46,900
Debtor Reorganization Items, Write-off of Debt Issuance Costs and Debt Discounts					20,500
Senior Notes Due 2019 [Domain] | Predecessor [Member]
Components of Interest Expense [Line Items]
Contractual Interest Expense on Prepetition Liabilities Not Recognized in Statement of Operations			5,400		10,900
Senior Notes Due 2020 [Domain] | Predecessor [Member]
Components of Interest Expense [Line Items]
Contractual Interest Expense on Prepetition Liabilities Not Recognized in Statement of Operations			$ 16,500		$ 32,900

[1] 2 Includes a $0.6 million write-off in June 2017 attributable to a change in the composition of financial institutions comprising the Credit Facility’s bank group (see Note 7). Includes $20.5 million related to the accelerated write-off of unamortized debt issuance costs associated with the RBL and Senior Notes for the six months ended June 30, 2016.

[2] 1 Absent the bankruptcy proceedings and the corresponding suspension of the accrual of interest on unsecured debt, we would have recorded total contractual interest expense of $23.5 million and $46.9 million for the three and six months ended June 30, 2016, including $5.4 million and $10.9 million attributable to the 7.25% Senior Notes due 2019 (“2019 Senior Notes”) and $16.5 million and $32.9 million attributable to the 8.5% Senior Notes due 2020 (together with the 2019 Senior Notes, the “Senior Notes”).