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Note 19 - Post-retirement Benefits - Analysis of Plan Assets and Expected Rate of Return (Details) - UNITED KINGDOM - Pension Plan [Member] - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Fair value of asset $ 132,216 $ 137,725 $ 123,840
DGF [Member]      
Expected rate of return 8.40% 7.70%  
Fair value of asset $ 61,872 $ 64,023  
LDI [MEmber]      
Expected rate of return 4.90% 4.20%  
Fair value of asset $ 41,800 $ 47,283  
Bond Funds [Member]      
Expected rate of return 4.90% 4.40%  
Fair value of asset $ 27,286 $ 24,835  
Defined Benefit Plan, Equity Securities [Member]      
Expected rate of return 1.70% 3.70%  
Fair value of asset $ 369 $ 185  
Defined Benefit Plan, Other Assets [Member]      
Expected rate of return 3.80% 4.00%  
Fair value of asset $ 889 $ 1,399