Note 10 - Components of Net Periodic Pension Cost - Net Periodic Pension Cost (Details) - Pension Plan [Member] - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Service cost	$ 486	$ 0	$ 486	$ 0
Interest cost	1,004	106	1,215	318
Expected return on plan assets	(1,383)	(214)	(1,843)	(642)
Net amortization	0	43	0	129
Total periodic pension income	$ 107	$ (65)	$ (142)	$ (195)

Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.

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Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.

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