Current Ratio Requirement

No definition available.

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- Definition

Minimum permitted consolidated EBITDAX to Consolidated Interest charges ratio.

+ References

No definition available.

+ Details

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- Definition

Interest in entities which guarantee our debt issuances, expressed as a percentage

+ References

No definition available.

+ Details

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- Definition

Net debt principal balance reclassified to equity as a result of notes conversion

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Maximum permitted Senior Secured Debt to consolidated EBITDAX ratio.

+ References

No definition available.

+ Details

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- Definition

Maximum permitted total debt to consolidated EBITDAX.

+ References

No definition available.

+ Details

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- Definition

The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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Balance Type:	credit
Period Type:	instant

- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

The cash outflow for the extinguishment of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, before its maturity.

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Balance Type:	credit
Period Type:	duration

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Balance Type:	credit
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- 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.

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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- Definition

The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for a specific purpose other than for financing goods acquired for inventory or imminent delivery to a customer.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Period Type:	instant

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Balance Type:	debit
Period Type:	duration

- Definition

Number of shares issued during the period as a result of the conversion of convertible securities.

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Period Type:	duration

- Details

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Balance Type:
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- Details

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- Details

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- Details

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- Details

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Long-Term Debt (Details Textuals) shares in Millions		1 Months Ended	3 Months Ended		6 Months Ended
Long-Term Debt (Details Textuals) shares in Millions	Jun. 29, 2020 USD ($)	Mar. 31, 2020 USD ($)	Jun. 30, 2020 USD ($) shares	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Senior Secured Bank Credit Facility [Abstract]
Interest in guarantor subsidiaries			100.00%		100.00%
Borrowing base			$ 615,000,000		$ 615,000,000
Lender commitments			275,000,000		275,000,000
Increase in outstanding borrowings on Bank Credit Agreement	$ 200,000,000
Outstanding borrowings under Bank Credit Agreement			265,000,000		265,000,000		$ 0
Letters of credit outstanding			95,000,000		$ 95,000,000
Senior secured debt to consolidated EBITDAX					2.5
Consolidated EBITDAX to consolidated interest charges					1.25
Current ratio requirement					1.0
Debt principal of notes converted			$ 19,900,000
Shares issued upon conversion of notes \| shares			7.4
Debt principal balance net of debt discounts reclassified to equity			$ 13,900,000		$ 13,900,000
Debt repurchases, face amount		$ 30,200,000
Cash paid for debt repurchases		14,200,000			14,171,000	$ 0
Gain on debt extinguishment		$ 19,000,000.0	0	$ 100,346,000	18,994,000	$ 100,346,000
6 3/8% Convertible Senior Notes Due 2024 [Member]
Senior Secured Bank Credit Facility [Abstract]
Long-term Debt, Gross			225,663,000		$ 225,663,000		$ 245,548,000
Year 2020
Senior Secured Bank Credit Facility [Abstract]
Total Debt to Consolidated EBITDAX					5.25
Q1 \| Year 2021
Senior Secured Bank Credit Facility [Abstract]
Total Debt to Consolidated EBITDAX					4.50
Q2 \| Year 2021
Senior Secured Bank Credit Facility [Abstract]
Total Debt to Consolidated EBITDAX					4.5
Q3 \| Year 2021
Senior Secured Bank Credit Facility [Abstract]
Total Debt to Consolidated EBITDAX					4.5
Letter of Credit
Senior Secured Bank Credit Facility [Abstract]
Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases			$ 100,000,000		$ 100,000,000