Note 6 - Employee Benefit Plans - Schedule of Amounts Recognized in the Balances Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Current portion - retirement benefits and other	$ 84	$ 97
Long-term liabilities - retirement benefits and other	4,013	4,165
Post-retirement benefit obligation	4,097	4,262
Net actuarial loss	$ 2,694	$ 3,024

Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

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