Quarterly report pursuant to Section 13 or 15(d)

Interest Expense Components of Interest Expense (Details)

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Interest Expense Components of Interest Expense (Details) - USD ($)
$ in Thousands
1 Months Ended 2 Months Ended 3 Months Ended 6 Months Ended 8 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 12, 2016
Sep. 30, 2017
Jun. 30, 2017
Jun. 30, 2016
Sep. 12, 2016
Sep. 30, 2017
Components of Interest Expense [Line Items]              
Write off of Deferred Debt Issuance Cost             $ 800
Successor [Member]              
Components of Interest Expense [Line Items]              
Interest Expense, Borrowings $ 180   $ 879 [1]       1,784 [2]
Amortization of Debt Issuance Costs 38   374       1,362
Interest Paid, Capitalized 0   (51)       (132)
Interest Expense $ 218   1,202       $ 3,014
Write off of Deferred Debt Issuance Cost     $ 200 $ 800      
Predecessor [Member]              
Components of Interest Expense [Line Items]              
Interest Expense, Borrowings   $ 1,363 [3]       $ 36,013 [4]  
Amortization of Debt Issuance Costs   0       22,188  
Interest Paid, Capitalized   0       (183)  
Interest Expense   1,363       58,018  
Contractual Interest Expense on Prepetition Liabilities Not Recognized in Statement of Operations   19,300       66,100  
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   4,400       46,300  
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   $ 13,400       $ 15,300  
[1] 2 The three months ended September 30, 2017 includes a $0.2 million write-off attributable to a change in the composition of financial institutions comprising the Credit Facility’s bank group in connection with the Third Amendment (see Note 8).
[2] 2 The nine months ended September 30, 2017 includes a total of $0.8 million of write-offs attributable to changes in the composition of financial institutions comprising the Credit Facility’s bank group in connection with amendments to the Credit Facility (see Note 8). The period from January 1, 2016 through September 12, 2016 includes $20.5 million related to the accelerated write-off of unamortized debt issuance costs associated with the RBL and Senior Notes.
[3] 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 $19.3 million for the period from July 1, 2016 through September 12, 2016, including $4.4 million and $13.4 million attributable to the 7.25% Senior Notes due 2019 (“2019 Senior Notes”) and the 8.5% Senior Notes due 2020 (“2020 Senior Notes”).
[4] 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 $66.1 million for the period from January 1, 2016 through September 12, 2016, including $15.3 million and $46.3 million attributable to the 2019 Senior Notes and the 2020 Senior Notes, respectively.