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v3.19.3.a.u2

Debt - Narrative (Details) |  | 1 Months Ended | 2 Months Ended | 10 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Jul. 31, 2017 USD ($) | Feb. 28, 2018 USD ($) | Feb. 28, 2017 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Feb. 27, 2020 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt issuance costs for the 2026 Senior Unsecured Notes |  |  |  |  | $ 7,531,000 | $ 8,214,000 |
Amortization of debt issuance costs |  |  | $ 416,000 | $ 1,988,000 | 5,059,000 | 5,430,000 |
Maximum pro forma leverage ratio allowable which will permit repurchase of equity and indebtedness | 2.75 |  |  |  |  |  |
Mortgage held on present value of proven oil and gas reserves | 85.00% |  |  |  |  |  |
Net proceeds from issuance of debt |  |  | 0 | 0 | $ 0 | 400,000,000 |
Minimum availability of borrowing base required which will permit distributions to parent company |  |  |  |  | 10.00% |  |
RBL Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt issuance costs for the RBL Facility |  |  |  |  | $ 11,000,000 | 16,000,000 |
Medium-term notes | 2026 Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Fair value of debt |  |  |  |  | 376,000,000 | $ 368,000,000 |
Interest rate |  |  |  |  |  | 7.00% |
Line of credit | RBL Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Borrowings outstanding |  |  |  |  | 2,000,000 |  |
Unsecured debt | 2026 Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Principal amount of debt issued |  | $ 400,000,000 |  |  |  |  |
Interest rate |  | 7.00% |  |  |  |  |
Net proceeds from issuance of debt |  | $ 391,000,000 |  |  |  |  |
Aggregate principal amount able to be redeemed |  | 35.00% |  |  |  |  |
Redemption price in event of change in control |  | 101.00% |  |  |  |  |
Line of credit | RBL Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Maximum borrowing capacity | $ 1,500,000,000.0 |  |  |  |  |  |
Borrowing base |  |  |  |  | 500,000,000 |  |
Initial borrowing commitment |  |  |  |  | 400,000,000 |  |
Letters of credit outstanding |  |  |  |  | 7,000,000 |  |
Available borrowing capacity |  |  |  |  | $ 391,000,000 |  |
Commitment fee | 0.50% |  |  |  |  |  |
Leverage ratio (no more than) | 4.00 |  |  |  |  |  |
Current ratio (at least) | 1.00 |  |  |  |  |  |
Leverage ratio at period end |  |  |  |  | 1.38 |  |
Current ratio at period end |  |  |  |  | 3.18 |  |
Reduction in borrowing base if unsecured indebtedness is incurred | 25.00% |  |  |  |  |  |
Minimum availability of borrowing base required which will permit repurchase of equity and indebtedness | 15.00% |  |  |  |  |  |
Maximum pro forma leverage ratio allowable which will permit distributions to parent company |  |  |  |  | 3.00 |  |
Letters of credit | RBL Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Maximum borrowing capacity | $ 25,000,000 |  |  |  |  |  |
LIBOR | Minimum | Line of credit | RBL Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Applicable margin | 2.50% |  |  |  |  |  |
LIBOR | Maximum | Line of credit | RBL Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Applicable margin | 3.50% |  |  |  |  |  |
Customary base rate | Minimum | Line of credit | RBL Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Applicable margin | 1.50% |  |  |  |  |  |
Customary base rate | Maximum | Line of credit | RBL Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Applicable margin | 2.50% |  |  |  |  |  |
On or after February 15, 2021 | Unsecured debt | 2026 Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Redemption price |  | 107.00% |  |  |  |  |
Prior to February 15, 2021 | Unsecured debt | 2026 Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Redemption price |  | 100.00% |  |  |  |  |
Interest expense |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Amortization of debt issuance costs |  |  | $ 0 | $ 2,000,000 | $ 5,000,000 | $ 5,000,000 |
Subsequent Event |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Bond repurchase program, authorized amount |  |  |  |  |  |  | $ 75,000,000

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- Definition Amount of amortization expense attributable to debt issuance costs. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(8)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399 + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Percentage price of original principal amount of debt at which debt can be redeemed by the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph e -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 + Details
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- Definition Amount, after accumulated amortization, of debt issuance costs related to line of credit arrangements. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section S45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=68176171&loc=SL68176184-208336 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
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