Annual report pursuant to Section 13 and 15(d)

Note 18 - Employee Benefit Plans - Weighted-average Assumptions Used to Determine the Projected Benefit Obligation (Details)

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Note 18 - Employee Benefit Plans - Weighted-average Assumptions Used to Determine the Projected Benefit Obligation (Details)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
UNITED STATES | Pension Plan [Member]      
Projected benefit obligation:      
Discount rate 5.46% 5.75% 3.11%
Rate of compensation increase 4.14% 4.24% 4.09%
Interest credit rate 5.15% 5.15% 5.15%
Net periodic pension cost:      
Discount rate 5.75% 3.11% 2.82%
Rate of compensation increase 4.24% 4.09% 4.09%
Expected return on plan assets 7.18% 7.17% 7.52%
Interest credit rate 5.15% 5.15% 5.15%
UNITED STATES | Other Postretirement Benefits Plan [Member]      
Projected benefit obligation:      
Discount rate 5.54% 5.80% 3.01%
Net periodic pension cost:      
Discount rate 5.80% 3.01% 2.63%
Foreign Plan [Member] | Pension Plan [Member]      
Projected benefit obligation:      
Discount rate 3.11% 3.67% 1.20%
Rate of compensation increase 2.87% 2.93% 2.86%
Interest credit rate 2.14% 2.35% 0.87%
Net periodic pension cost:      
Discount rate 3.67% 1.20% 0.76%
Rate of compensation increase 2.93% 2.86% 2.64%
Expected return on plan assets 4.90% 4.80% 4.80%
Interest credit rate 2.35% 0.87% 0.52%
Foreign Plan [Member] | Other Postretirement Benefits Plan [Member]      
Projected benefit obligation:      
Discount rate 4.60% 5.10% 2.80%
Net periodic pension cost:      
Discount rate 5.10% 2.80% 2.30%