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Note 8 - Accrued Retirement Benefits - Accrued Retirement Benefits (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Accrued retirement benefits	$ 1,648	$ 1,692
Less current portion	142	142
Non-current portion of accrued retirement benefits	1,506	1,550
Pension Plan [Member] | Qualified Plan [Member]
Accrued retirement benefits	(53)	(33)
Supplemental Employee Retirement Plan [Member] | Nonqualified Plan [Member]
Accrued retirement benefits	$ 1,701	$ 1,725

X

- Definition

Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans.

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Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as current.

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Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent.

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