Long-Term Debt - Additional Information (Details) - USD ($)
$ / shares in Units, shares in Millions |
|
|
3 Months Ended |
12 Months Ended |
25 Months Ended |
|
Oct. 18, 2018 |
Sep. 07, 2016 |
Dec. 31, 2019 |
Sep. 30, 2019 |
Jun. 30, 2019 |
Mar. 31, 2019 |
Dec. 31, 2018 |
Mar. 31, 2017 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Oct. 18, 2018 |
Jun. 30, 2017 |
| Debt Instrument [Line Items] |
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| Aggregate annual maturities of long-term debt, 2019 |
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$ 0
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$ 0
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| Aggregate annual maturities of long-term debt, 2020 |
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0
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0
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| Aggregate annual maturities of long-term debt, 2021 |
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0
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0
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| Aggregate annual maturities of long-term debt, 2022 |
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21,000,000
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21,000,000
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| Aggregate annual maturities of long-term debt, 2023 |
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625,000,000
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|
625,000,000
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| Debt instrument aggregate principal amount |
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646,000,000
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|
646,000,000
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$ 889,790,000
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| Investment in Second Lien Term Loan |
$ 5,000,000
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$ 5,000,000
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| Gain on exchange of debt |
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47,100,000
|
$ 7,800,000
|
$ 47,109,000
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$ 7,811,000
|
$ 123,923,000
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| Refinancing Transaction |
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| Debt Instrument [Line Items] |
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| Gain on exchange of debt |
47,100,000
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| Basic and diluted income (loss) per common share |
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$ 0.33
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| Exchange Transaction |
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| Debt Instrument [Line Items] |
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| Gain on exchange of debt |
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$ 123,900,000
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| Basic and diluted income (loss) per common share |
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$ 0.06
|
$ 1.30
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| Deal transaction costs |
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$ 18,900,000
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| Common stock issued value per share |
|
$ 1.76
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| Additional expense charged to gain on debt transactions |
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$ 400,000
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| Exchange Transaction | Common Stock |
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| Debt Instrument [Line Items] |
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| Debt conversion, common stock shares issued |
|
60.4
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| 9.75% Senior Second Lien Notes, Due November 2023 |
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| Debt Instrument [Line Items] |
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| Debt instrument aggregate principal amount |
$ 625,000,000
|
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|
$ 625,000,000
|
|
$ 625,000,000
|
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|
$ 625,000,000
|
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| Debt instrument interest rate |
9.75%
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|
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|
9.75%
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|
9.75%
|
9.75%
|
|
9.75%
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| Debt instrument maturity date |
Nov. 01, 2023
|
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Nov. 01, 2023
|
Nov. 01, 2023
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| Debt instrument payment terms |
Interest on the Senior Second Lien Notes is payable in arrears on May 1 and November 1 of each year, beginning on May 1, 2019.
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| Annual effective interest rate |
10.30%
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10.30%
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| Senior second lien notes repurchase price limit percentage |
101.00%
|
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101.00%
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| Krohn entities purchase of Senior Second Lien Notes |
$ 8,000,000
|
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| 9.75% Senior Second Lien Notes, Due November 2023 | Prior to November 1, 2020 |
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| Debt Instrument [Line Items] |
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| Redemption price percentage of principal amount plus accrued and unpaid interest |
100.00%
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| Redemption description |
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Prior to November 1, 2020, we may redeem all or any portion of the Senior Second Lien Notes at a redemption price equal to 100% of the principal amount of the outstanding Senior Second Lien Notes plus accrued and unpaid interest, if any, to the redemption date, plus the “Applicable Premium” (as defined in the Indenture). In addition, prior to November 1, 2020, we may, at our option, on one or more occasions redeem up to 35% of the aggregate original principal amount of the Senior Second Lien Notes in an amount not greater than the net cash proceeds from certain equity offerings at a redemption price of 109.750% of the principal amount of the outstanding Senior Second Lien Notes plus accrued and unpaid interest, if any, to the redemption date.
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| Redemption price percentage of principal amount plus accrued and unpaid interest redeemable upon proceeds from equity offering |
109.75%
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| 9.75% Senior Second Lien Notes, Due November 2023 | Prior to November 1, 2020 | Maximum |
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| Debt Instrument [Line Items] |
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| Redemption price percentage |
35.00%
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| 9.75% Senior Second Lien Notes, Due November 2023 | 12-month Period Beginning November 1, 2020 |
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| Debt Instrument [Line Items] |
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| Redemption price percentage of principal amount plus accrued and unpaid interest |
104.875%
|
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| 9.75% Senior Second Lien Notes, Due November 2023 | 12-month Period Beginning November 1, 2021 |
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| Debt Instrument [Line Items] |
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| Redemption price percentage of principal amount plus accrued and unpaid interest |
102.438%
|
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| 9.75% Senior Second Lien Notes, Due November 2023 | On November 1, 2022 and Thereafter |
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| Debt Instrument [Line Items] |
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| Redemption price percentage of principal amount plus accrued and unpaid interest |
100.00%
|
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| Credit Facility, Due October 2022 |
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| Debt Instrument [Line Items] |
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| Debt instrument aggregate principal amount |
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$ 21,000,000
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|
$ 21,000,000
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| Debt instrument maturity date |
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Oct. 18, 2022
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| Credit agreement expiration date |
Oct. 18, 2022
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| Initial borrowing base and lending commitment |
$ 250,000,000
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$ 250,000,000
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| Leverage ratio |
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350.00%
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| Estimated derivative contracts projected date |
Dec. 02, 2018
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| Estimated derivative contracts projected production period |
18 months
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| Credit facility borrowings outstanding |
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$ 21,000,000
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$ 21,000,000
|
$ 0
|
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| Letters of credit outstanding |
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$ 9,600,000
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|
$ 9,600,000
|
300,000
|
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| Credit Facility, Due October 2022 | Letters of Credit |
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| Debt Instrument [Line Items] |
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| Credit facility maximum lender commitment |
$ 30,000,000
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30,000,000
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| Credit Facility, Due October 2022 | Scenario, Forecast |
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| Debt Instrument [Line Items] |
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| Leverage ratio |
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|
300.00%
|
325.00%
|
325.00%
|
350.00%
|
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| Credit Facility, Due October 2022 | Two Quarters After Material Acquisition |
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| Debt Instrument [Line Items] |
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| Leverage ratio |
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350.00%
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| Credit Facility, Due October 2022 | Maximum |
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| Debt Instrument [Line Items] |
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| Unused portion of the borrowing base commitment fee |
0.50%
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| Credit Facility, Due October 2022 | Maximum | Eurodollar |
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| Debt Instrument [Line Items] |
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| Debt instrument, basis spread on variable rate |
3.50%
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| Credit Facility, Due October 2022 | Maximum | Alternate Base Rate |
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| Debt Instrument [Line Items] |
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| Debt instrument, basis spread on variable rate |
2.50%
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| Credit Facility, Due October 2022 | Minimum |
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| Debt Instrument [Line Items] |
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| Credit agreement, current ratio |
100.00%
|
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| Unused portion of the borrowing base commitment fee |
0.375%
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| Estimated percenatge of derivative contracts |
50.00%
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| Credit Facility, Due October 2022 | Minimum | Eurodollar |
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| Debt Instrument [Line Items] |
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| Debt instrument, basis spread on variable rate |
2.50%
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| Credit Facility, Due October 2022 | Minimum | Alternate Base Rate |
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| Debt Instrument [Line Items] |
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| Debt instrument, basis spread on variable rate |
1.50%
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| 11.00% 1.5 Lien Term Loan, Due November 2019 | Refinancing Transaction |
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| Debt Instrument [Line Items] |
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| Debt instrument aggregate principal amount |
$ 75,000,000
|
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|
$ 75,000,000
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| Debt instrument interest rate |
11.00%
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|
11.00%
|
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| Debt instrument maturity date |
Nov. 15, 2019
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| Debt instrument, maturity date, description |
“1.5 Lien Term Loan”) due November 15, 2019
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| 9.00% Term Loan, due May 15, 2020 | Refinancing Transaction |
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| Debt Instrument [Line Items] |
|
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| Debt instrument aggregate principal amount |
$ 300,000,000
|
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|
$ 300,000,000
|
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| Debt instrument interest rate |
9.00%
|
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|
9.00%
|
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| Debt instrument maturity date |
May 15, 2020
|
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| Debt instrument, maturity date, description |
9.00% Term Loan, due May 15, 2020
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| 9.00 % Second Lien Term Loan, Due May 2020 |
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| Debt Instrument [Line Items] |
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| Debt instrument aggregate principal amount |
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|
$ 300,000,000
|
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| Debt instrument interest rate |
|
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|
9.00%
|
|
9.00%
|
9.00%
|
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| Debt instrument maturity date |
|
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|
|
|
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|
May 15, 2020
|
May 15, 2020
|
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| 9.00 % Second Lien Term Loan, Due May 2020 | Refinancing Transaction |
|
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| Debt Instrument [Line Items] |
|
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| Debt instrument aggregate principal amount |
$ 177,500,000
|
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|
$ 177,500,000
|
|
| Debt instrument maturity date |
May 15, 2020
|
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| Debt instrument, maturity date, description |
9.00%/10.75% Senior Second Lien PIK Toggle Notes (the “Second Lien PIK Toggle Notes”), due May 15, 2020
|
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| 9.00 % Second Lien Term Loan, Due May 2020 | Maximum | Refinancing Transaction |
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| Debt Instrument [Line Items] |
|
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| Debt instrument paid in kind interest rate |
10.75%
|
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|
|
|
|
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|
10.75%
|
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| 9.00 % Second Lien Term Loan, Due May 2020 | Minimum | Refinancing Transaction |
|
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| Debt Instrument [Line Items] |
|
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| Debt instrument interest rate |
9.00%
|
|
|
|
|
|
|
|
|
|
|
9.00%
|
|
| 8.50%/10.00% Third Lien PIK Toggle Notes, Due June 2021 |
|
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|
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| Debt Instrument [Line Items] |
|
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| Debt instrument aggregate principal amount |
|
|
|
|
|
|
|
|
|
$ 153,192,000
|
|
|
|
| Debt instrument interest rate |
|
|
|
|
|
|
8.50%
|
|
8.50%
|
8.50%
|
|
|
|
| Debt instrument maturity date |
|
|
|
|
|
|
|
|
Jun. 15, 2021
|
Jun. 15, 2021
|
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|
|
| Debt instrument paid in kind interest rate |
|
|
|
|
|
|
10.00%
|
|
10.00%
|
10.00%
|
|
|
|
| 8.50%/10.00% Third Lien PIK Toggle Notes, Due June 2021 | Refinancing Transaction |
|
|
|
|
|
|
|
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|
| Debt Instrument [Line Items] |
|
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|
|
|
|
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| Debt instrument aggregate principal amount |
$ 160,900,000
|
|
|
|
|
|
|
|
|
|
|
$ 160,900,000
|
|
| Debt instrument maturity date |
Jun. 15, 2021
|
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| Debt instrument, maturity date, description |
8.50%/10.00% Senior Third Lien PIK Toggle Notes (the “Third Lien PIK Toggle Notes”), due June 15, 2021
|
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|
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|
|
| 8.50%/10.00% Third Lien PIK Toggle Notes, Due June 2021 | Exchange Transaction |
|
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|
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| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
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|
| Debt instrument aggregate principal amount |
|
$ 142,000,000
|
|
|
|
|
|
|
|
|
|
|
|
| 8.50%/10.00% Third Lien PIK Toggle Notes, Due June 2021 | Maximum | Refinancing Transaction |
|
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|
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|
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|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt instrument paid in kind interest rate |
10.00%
|
|
|
|
|
|
|
|
|
|
|
10.00%
|
|
| 8.50%/10.00% Third Lien PIK Toggle Notes, Due June 2021 | Minimum | Refinancing Transaction |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt instrument interest rate |
8.50%
|
|
|
|
|
|
|
|
|
|
|
8.50%
|
|
| 8.50% Unsecured Senior Notes, Due June 2019 |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt instrument aggregate principal amount |
|
|
|
|
|
|
|
|
|
$ 189,829,000
|
|
|
|
| Debt instrument interest rate |
|
|
|
|
|
|
8.50%
|
|
8.50%
|
8.50%
|
|
|
|
| Debt instrument maturity date |
|
|
|
|
|
|
|
|
Jun. 15, 2019
|
Jun. 15, 2019
|
|
|
|
| 8.50% Unsecured Senior Notes, Due June 2019 | Refinancing Transaction |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt instrument aggregate principal amount |
$ 189,800,000
|
|
|
|
|
|
|
|
|
|
|
$ 189,800,000
|
|
| Debt instrument interest rate |
8.50%
|
|
|
|
|
|
|
|
|
|
|
8.50%
|
|
| Debt instrument maturity date |
Jun. 15, 2019
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt instrument, maturity date, description |
8.500% Senior Notes (the “Unsecured Senior Notes”), due June 15, 2019
|
|
|
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|
|
|
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|
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|
|
| 8.50% Unsecured Senior Notes, Due June 2019 | Exchange Transaction |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt instrument aggregate principal amount |
|
$ 710,200,000
|
|
|
|
|
|
|
|
|
|
|
|
| Percentage of unsecured senior notes exchanged |
|
79.00%
|
|
|
|
|
|
|
|
|
|
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|
| 8.50% Unsecured Senior Notes, Due June 2019 | Exchange Transaction | Common Stock |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt conversion, common stock shares issued |
|
60.4
|
|
|
|
|
|
|
|
|
|
|
|
| 9.00%/10.75% Second Lien PIK Toggle Notes, Due May 2020 |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt instrument aggregate principal amount |
|
|
|
|
|
|
|
|
|
$ 171,769,000
|
|
|
|
| Debt instrument interest rate |
|
|
|
|
|
|
9.00%
|
|
9.00%
|
9.00%
|
|
|
|
| Debt instrument maturity date |
|
|
|
|
|
|
|
|
May 15, 2020
|
May 15, 2020
|
|
|
|
| Debt instrument paid in kind interest rate |
|
|
|
|
|
|
10.75%
|
|
10.75%
|
10.75%
|
|
|
|
| 9.00%/10.75% Second Lien PIK Toggle Notes, Due May 2020 | Exchange Transaction |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt instrument aggregate principal amount |
|
$ 159,800,000
|
|
|
|
|
|
|
|
|
|
|
|
| 11.00% 1.5 Lien Term Loan, Due November 2019 |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt instrument aggregate principal amount |
|
|
|
|
|
|
|
|
|
$ 75,000,000
|
|
|
|
| Debt instrument interest rate |
|
|
|
|
|
|
11.00%
|
|
11.00%
|
11.00%
|
|
|
|
| Debt instrument maturity date |
|
|
|
|
|
|
|
|
Nov. 15, 2019
|
Nov. 15, 2019
|
|
|
|
| 11.00% 1.5 Lien Term Loan, Due November 2019 | Exchange Transaction |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt instrument aggregate principal amount |
|
$ 75,000,000
|
|
|
|
|
|
|
|
|
|
|
|
| 1.5 Lien Term Loan | Exchange Transaction |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Interest expense recorded for new debt |
|
|
|
|
|
|
|
|
|
|
|
$ 0
|
|
| Second Lien PIK Toggle Notes and the Third Lien PIK Toggle Notes |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Net reduction to long term debt |
|
|
|
|
|
|
|
|
|
|
|
|
$ 8,200,000
|