Note 5 - Other Long-Term Obligations and Commitments (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]

(Thousands of dollars)	Operating Leases
2024	$	601
2025		149
Total undiscounted lease payments	$	750
Less: Amount associated with discounting		(58	)
Total net operating lease liabilities	$	692
Less: Current portion asset retirement and other long-term obligations		692
Non-current portion included in Other long-term obligations	$	-

Schedule of Change in Asset Retirement Obligation [Table Text Block]

(Thousands of dollars)	March 31, 2024
Asset retirement obligation at December 31, 2023	$	15,153
Liabilities settled		(229	)
Accretion of discount		171
Asset retirement obligation at March 31, 2024	$	15,095
Less current portion of asset retirement obligations		446
Asset retirement obligations, long-term	$	14,649