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Note 8 - Accrued Retirement Benefits - Accrued Retirement Benefits (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Accrued retirement benefits	$ 8,817	$ 2,508
Less current portion	7,370	140
Non-current portion of accrued retirement benefits	1,447	2,368
Pension Plan [Member] | Qualified Plan [Member]
Accrued retirement benefits	7,230	912
Supplemental Employee Retirement Plan [Member] | Nonqualified Plan [Member]
Accrued retirement benefits	$ 1,587	$ 1,596

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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