Note 15 - Retirement Fund and Profit Sharing Plan - Changes in Plan Assets and Benefit Obligation (Details) - Supplemental Employee Retirement Plan [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Company contributions	$ 775	$ 775
Benefits paid	(775)	(775)
Benefit obligation	19,484	18,175
Service Cost	395	369	$ 503
Interest Cost	903	886	636
Benefits paid	(775)	(775)
Actuarial (gain) loss	(1,968)	828
Benefit obligation	18,039	19,484	$ 18,175
Underfunded status, December 31	$ (18,039)	$ (19,484)