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Note 19 - Post-retirement Benefits (Details Textual) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Defined Contribution Plan, Cost $ 18.9 $ 17.1 $ 12.7
UNITED KINGDOM | Pension Plan [Member] | Growth Portfolio [Member]      
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage 45.00%    
UNITED KINGDOM | Pension Plan [Member] | Stabilizing Portfolio [Member]      
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage 55.00%    
The 401k Plan [Member] | UNITED STATES | Maximum [Member]      
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 4.00%    
Group Personal Pension Plan [Member] | UNITED KINGDOM | Maximum [Member]      
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 6.00%    
Group Personal Pension Plan [Member] | UNITED KINGDOM | Minimum [Member]      
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 4.50%