Note 9 - Components of Net Periodic Pension Cost - Net Periodic Pension Cost (Details) - Pension Plan [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	106	110	212	220
Expected return on plan assets	(214)	(209)	(428)	(419)
Net amortization	43	74	86	148
Total periodic pension income	$ (65)	$ (25)	$ (130)	$ (51)