Commitments and contingencies.

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- Definition

Decommissioning obligations supported by cash.

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No definition available.

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- Definition

Decommissioning obligations supported by surety bonds.

+ References

No definition available.

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- Definition

The number of escrow funding agreements.

+ References

No definition available.

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- Definition

Sinking fund account maximum amount.

+ References

No definition available.

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- Definition

Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable in twelve months or in the next operating cycle if longer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
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-Name Accounting Standards Codification
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-Subparagraph (SX 210.5-02(20))
-Publisher FASB
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-Topic 410
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-URI https://asc.fasb.org/1943274/2147481899/410-30-55-11

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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-URI https://asc.fasb.org/1943274/2147481931/410-30-50-10

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- Definition

Amount of loss (reversal of loss) recognized for loss contingency liability. Includes, but is not limited to, effect of revision in previously reported estimate.

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- Definition

Investments which are not defined as or included in marketable (debt, equity, or other) securities whose use is restricted in whole or in part, generally by contractual agreements or regulatory requirements. For use in an unclassified balance sheet.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 954
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Commitments and Contingencies - Additional Information (Detail) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Dec. 31, 2021 USD ($) agreement	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)
Commitments and Contingencies:
Pipeline incident loss		$ 167	$ 195	$ 179	$ 591
Remaining environmental accrued liability recorded		0		0		$ 0
Sinking fund account maximum value upon which obligation ceases	$ 172,600	4,300		4,300
Restricted Investment - decommissioning of offshore production facilities		4,700		4,700
Beta's decommissioning obligations, full supported by surety bonds		161,300		161,300
Number of escrow funding agreements \| agreement	2
Beta's decommissioning obligations, cash		$ 40,600		40,600
Beta Pipeline Incident
Commitments and Contingencies:
Pipeline incident loss				$ 200