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Other Long-Term Obligations and Commitments (Tables)

9 Months Ended

Sep. 30, 2021

Debt Disclosure [Abstract]

Summary of Future Minimum Lease Payments for Non-Cancelable Operating Leases

The payment schedule for the Company’s operating lease obligations as of September 30, 2021 is as follows:

(Thousands of dollars)		Operating Leases
2021		$	144
2022			158
2023			17
Total undiscounted lease payments		$	319
Less: Amount associated with discounting			(11	)
Net operating lease liabilities		$	308

Reconciliation of Liability for Plugging and Abandonment Costs

A reconciliation of the liability for plugging and abandonment costs for the nine months ended September 30, 2021 is as follows:

(Thousands of dollars)		September  30, 2021
Asset retirement obligation at December 31, 2020		$	13,660
Liabilities incurred			721
Liabilities settled			(1,047	)
Accretion expense			487
Asset retirement obligation at September 30, 2021		$	13,821

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Tabular disclosure for lessee's operating leases. Includes, but is not limited to, description of lessee's operating lease, existence and terms of renewal or purchase options and escalation clauses, restrictions imposed by lease, such as those concerning dividends, additional debt, and further leasing, rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions.

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Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation.

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