Note 5 - Retirement Plans - Pension Plan Asset Allocation (Details) |
Dec. 31, 2023 |
Dec. 31, 2022 |
---|---|---|
Asset allocation percentage | 100.00% | 100.00% |
Defined Benefit Plan, Equity Securities [Member] | ||
Asset allocation percentage | 24.00% | 48.00% |
Defined Benefit Plan, Equity Securities [Member] | Minimum [Member] | ||
Target Allocation | 20.00% | |
Defined Benefit Plan, Equity Securities [Member] | Maximum [Member] | ||
Target Allocation | 30.00% | |
Defined Benefit Plan, Debt Security [Member] | ||
Asset allocation percentage | 75.00% | 51.00% |
Defined Benefit Plan, Debt Security [Member] | Minimum [Member] | ||
Target Allocation | 70.00% | |
Defined Benefit Plan, Debt Security [Member] | Maximum [Member] | ||
Target Allocation | 80.00% | |
Defined Benefit Plan, Real Estate [Member] | ||
Asset allocation percentage | 1.00% | 1.00% |
Defined Benefit Plan, Real Estate [Member] | Minimum [Member] | ||
Target Allocation | 0.00% | |
Defined Benefit Plan, Real Estate [Member] | Maximum [Member] | ||
Target Allocation | 2.00% |