Annual report pursuant to Section 13 and 15(d)

Long-Term Debt - Additional Information (Details)

v3.6.0.2
Long-Term Debt - Additional Information (Details) - USD ($)
$ / shares in Units, shares in Millions
1 Months Ended 3 Months Ended 4 Months Ended 12 Months Ended
Sep. 07, 2016
May 31, 2015
Sep. 30, 2016
Dec. 31, 2016
Dec. 31, 2016
Dec. 31, 2015
Debt Instrument [Line Items]            
Aggregate annual maturities of long-term debt, 2017       $ 8,200,000 $ 8,200,000  
Aggregate annual maturities of long-term debt, 2018       23,800,000 23,800,000  
Aggregate annual maturities of long-term debt, 2019       303,700,000 303,700,000  
Aggregate annual maturities of long-term debt, 2020       510,100,000 510,100,000  
Aggregate annual maturities of long-term debt, thereafter       180,100,000 180,100,000  
Debt instrument aggregate principle amount       873,733,000 873,733,000 $ 1,200,000,000
Gain on exchange of debt     $ 123,900,000   $ 123,923,000  
First lien leverage ratio, through June 30, 2017         250.00%  
First lien leverage ratio, after June 30, 2017         200.00%  
Current ratio         100.00%  
Current ratio         293.00%  
Asset coverage ratio         125.00%  
Write-offs of debt issuance costs         $ 1,400,000 3,200,000
8.50% Unsecured Senior Notes, Due June 2019            
Debt Instrument [Line Items]            
Debt instrument aggregate principle amount       $ 189,829,000 $ 189,829,000 $ 900,000,000
Debt instrument maturity date         Jun. 15, 2019 Jun. 15, 2019
Debt instrument interest rate       8.50% 8.50% 8.50%
9.00%/10.75% Second Lien PIK Toggle Notes, Due May 2020            
Debt Instrument [Line Items]            
Debt instrument aggregate principle amount       $ 163,007,000 $ 163,007,000  
Debt instrument maturity date         May 15, 2020  
Debt instrument interest rate 9.00%     9.00% 9.00%  
Debt instrument paid in kind interest rate       10.75% 10.75%  
Debt instrument payment terms         Cash interest accrues at 9.00% per annum and is payable on May 15 and November 15 of each year. The Second Lien PIK Toggle Notes contain payment-in-kind (“PIK”) interest provisions, where certain semi-annual interest is added to the principal amount instead of being paid in cash in the then current semi-annual period. We have the option for the first 18 months to pay all or a portion of interest in kind at a rate of 10.75% per annum, except that the initial interest payment on November 15, 2016 had to be paid solely using PIK.  
Debt instrument, period in which interest can be paid-in-kind 18 months          
Debt instrument stated interest rate percentage for payment-in-kind 10.75%          
8.50%/10.00% Third Lien PIK Toggle Notes, Due June 2021            
Debt Instrument [Line Items]            
Debt instrument aggregate principle amount       $ 145,897,000 $ 145,897,000  
Debt instrument maturity date         Jun. 15, 2021  
Debt instrument interest rate 8.50%     8.50% 8.50%  
Debt instrument paid in kind interest rate       10.00% 10.00%  
Debt instrument payment terms         The maturity date will accelerate to February 28, 2019 if the remaining Unsecured Senior Notes have not been extended, renewed, refunded, defeased, discharged, replaced or refinanced by February 28, 2019. Cash interest accrues at 8.50% per annum and is payable on June 15 and December 15 of each year. The Third Lien PIK Toggle Notes contain PIK interest provisions, where certain semi-annual interest is added to the principal amount instead of being paid in cash in the then current semi-annual period. We have the option for the first 24 months to pay all or a portion of interest in kind at a rate of 10.00% per annum, except that the initial interest payment on December 15, 2016 had to be paid solely using PIK.  
Debt instrument, period in which interest can be paid-in-kind 24 months          
Debt instrument stated interest rate percentage for payment-in-kind 10.00%          
11.00% 1.5 Lien Term Loan, Due November 2019            
Debt Instrument [Line Items]            
Debt instrument aggregate principle amount       $ 75,000,000 $ 75,000,000  
Debt instrument maturity date         Nov. 15, 2019  
Debt instrument interest rate       11.00% 11.00%  
Revolving Bank Credit Facility Due November 2018            
Debt Instrument [Line Items]            
Revolving bank credit facility borrowing base       $ 150,000,000 $ 150,000,000  
Borrowings and letters of credit, repayment terms         To the extent borrowings and letters of credit outstanding exceed the redetermined borrowing base, such excess or deficiency is required to be repaid within 90 days in three equal monthly payments.  
Revolving bank credit facility maximum lender commitment       150,000,000 $ 150,000,000  
Credit agreement expiration date         Nov. 08, 2018  
Debt redemption amount       35,000,000 $ 35,000,000  
Line of credit maximum amount outstanding prior to repurchase of term loan       0 0  
Letter of credit maximum amount outstanding prior to repurchase of term loan       5,000,000 5,000,000  
Consolidated Cash balance       35,000,000 35,000,000  
Outstanding balances on the revolving bank credit facility (including letters of credit)       $ 5,000,000 $ 5,000,000  
Revolving bank credit facility interest rate description         Borrowings under the revolving bank credit facility bear interest at the applicable London Interbank Offered Rate (“LIBOR”) plus a margin that varies from 3.00% to 4.00% depending on the level of total borrowings under the Credit Agreement, or an alternative base rate equal to the greater of (a) Prime Rate, (b) Federal Funds Rate plus 0.50%, or (c) LIBOR plus 1.0%, plus applicable margin ranging from 2.00% to 3.00%.  
Unused portion of the borrowing base commitment fee         0.50%  
Annual effective interest rate       3.30% 3.30%  
Write-offs of debt issuance costs         $ 1,400,000 $ 3,200,000
Revolving bank credit facility borrowings outstanding       $ 0 0 0
Letters of credit outstanding       500,000 $ 500,000 900,000
Revolving Bank Credit Facility Due November 2018 | London Interbank Offered Rate (LIBOR)            
Debt Instrument [Line Items]            
Debt instrument, basis spread on variable rate         1.00%  
Revolving Bank Credit Facility Due November 2018 | Federal Funds Effective Swap Rate            
Debt Instrument [Line Items]            
Debt instrument, basis spread on variable rate         0.50%  
Revolving Bank Credit Facility Due November 2018 | Scenario Covenants            
Debt Instrument [Line Items]            
Maximum unrestricted cash balance if revolver balance is above $5 million       35,000,000 $ 35,000,000  
Revolving Bank Credit Facility Due November 2018 | Minimum | London Interbank Offered Rate (LIBOR)            
Debt Instrument [Line Items]            
Debt instrument, basis spread on variable rate         3.00%  
Revolving Bank Credit Facility Due November 2018 | Minimum | London Interbank Offered Rate Additional Applicable Margin            
Debt Instrument [Line Items]            
Debt instrument, basis spread on variable rate         2.00%  
Revolving Bank Credit Facility Due November 2018 | Maximum            
Debt Instrument [Line Items]            
Percentage of hedging contracts         75.00%  
Revolving Bank Credit Facility Due November 2018 | Maximum | London Interbank Offered Rate (LIBOR)            
Debt Instrument [Line Items]            
Debt instrument, basis spread on variable rate         4.00%  
Revolving Bank Credit Facility Due November 2018 | Maximum | London Interbank Offered Rate Additional Applicable Margin            
Debt Instrument [Line Items]            
Debt instrument, basis spread on variable rate         3.00%  
11.00% 1.5 Lien Term Loan, Due November 2019            
Debt Instrument [Line Items]            
Debt instrument maturity date Nov. 15, 2019          
Debt instrument interest rate 11.00%          
Debt instrument, maturity date, description         1.5 Lien Term Loan on September 7, 2016 with a maturity date of November 15, 2019. The maturity date will accelerate to February 28, 2019 if the remaining Unsecured Senior Notes have not been extended, renewed, refunded, defeased, discharged, replaced or refinanced by February 28, 2019.  
Debt instrument payment terms         Interest accrues at 11.00% per annum and is payable quarterly in cash.  
Debt instrument frequency of interest payment in cash         Quarterly  
9.00 % Second Lien Term Loan, Due May 2020            
Debt Instrument [Line Items]            
Debt instrument aggregate principle amount       $ 300,000,000 $ 300,000,000 $ 300,000,000
Debt instrument maturity date         May 15, 2020 May 15, 2020
Debt instrument interest rate   9.00%   9.00% 9.00% 9.00%
Annual effective interest rate       9.70% 9.70%  
Debt instrument payment terms         Interest on the Second Lien Term Loan is payable in arrears semi-annually on May 15 and November 15  
Debt instrument discount rate   1.00%        
8.50% Senior Notes due June 2019            
Debt Instrument [Line Items]            
Debt instrument maturity date         Jun. 15, 2019  
Debt instrument interest rate       8.50% 8.50% 8.50%
Annual effective interest rate       8.40% 8.40%  
Debt instrument payment terms         semi-annually in arrears on June 15 and December 15  
Exchange Transaction            
Debt Instrument [Line Items]            
Gain on exchange of debt $ 123,900,000          
Deal transaction costs $ 18,900,000          
Common stock issued value per share $ 1.76          
Basic and diluted income (loss) per common share         $ 1.30  
Exchange Transaction | Common Stock            
Debt Instrument [Line Items]            
Debt conversion, common stock shares issued         60.4  
Exchange Transaction | 8.50% Unsecured Senior Notes, Due June 2019            
Debt Instrument [Line Items]            
Debt instrument aggregate principle amount $ 710,200,000          
Percentage of unsecured senior notes exchanged 79.00%          
Debt instrument maturity date         Jun. 15, 2019  
Exchange Transaction | 8.50% Unsecured Senior Notes, Due June 2019 | Common Stock            
Debt Instrument [Line Items]            
Debt conversion, common stock shares issued 60.4          
Exchange Transaction | 9.00%/10.75% Second Lien PIK Toggle Notes, Due May 2020            
Debt Instrument [Line Items]            
Debt instrument aggregate principle amount $ 159,800,000          
Exchange Transaction | 9.00%/10.75% Second Lien PIK Toggle Notes, Due May 2020 | Minimum            
Debt Instrument [Line Items]            
Debt instrument interest rate 9.00%          
Exchange Transaction | 9.00%/10.75% Second Lien PIK Toggle Notes, Due May 2020 | Maximum            
Debt Instrument [Line Items]            
Debt instrument paid in kind interest rate 10.75%          
Exchange Transaction | 8.50%/10.00% Third Lien PIK Toggle Notes, Due June 2021            
Debt Instrument [Line Items]            
Debt instrument aggregate principle amount $ 142,000,000          
Debt instrument maturity date         Jun. 15, 2021  
Exchange Transaction | 8.50%/10.00% Third Lien PIK Toggle Notes, Due June 2021 | Minimum            
Debt Instrument [Line Items]            
Debt instrument interest rate 8.50%          
Exchange Transaction | 8.50%/10.00% Third Lien PIK Toggle Notes, Due June 2021 | Maximum            
Debt Instrument [Line Items]            
Debt instrument paid in kind interest rate 10.00%          
Exchange Transaction | 11.00% 1.5 Lien Term Loan, Due November 2019            
Debt Instrument [Line Items]            
Debt instrument aggregate principle amount $ 75,000,000          
Debt instrument maturity date         Nov. 15, 2019  
Debt instrument interest rate 11.00%          
Exchange Transaction | 1.5 Lien Term Loan            
Debt Instrument [Line Items]            
Interest expense recorded for new debt       $ 0