Note 17 - Retirement Plans - Average Assumptions For Benefits Plan (Details) - Pension Plan [Member]	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	5.54%	4.83%	5.02%
Discount rate	4.83%	5.02%	2.83%
Amortization period in years (Year)	17 years 9 months 25 days	18 years 7 months 9 days	19 years 4 months 28 days