Note 13 - Retirement, Savings and Deferred Compensation Plans - Amounts Recognized in Accumulated Other Comprehensive Loss (Details) - Supplemental Employee Retirement Plan [Member] - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Prior service cost	$ 192	$ 212
Net loss	(1,336)	(1,336)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	$ (1,144)	$ (1,124)