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Note 19 - Post-retirement Benefits - Asset Categorization (Details) - Pension Plan [Member] - UNITED KINGDOM - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Fair value of asset $ 147,273 $ 132,216 $ 137,725
Fair Value, Inputs, Level 1 [Member]      
Fair value of asset 147,273 131,846  
Fair Value, Inputs, Level 2 [Member]      
Fair value of asset 0 62  
Fair Value, Inputs, Level 3 [Member]      
Fair value of asset 0 308 $ 337
DGF [Member]      
Fair value of asset 68,228 61,872  
DGF [Member] | Fair Value, Inputs, Level 1 [Member]      
Fair value of asset 68,228 61,872  
DGF [Member] | Fair Value, Inputs, Level 2 [Member]      
Fair value of asset 0 0  
DGF [Member] | Fair Value, Inputs, Level 3 [Member]      
Fair value of asset 0 0  
LDI [MEmber]      
Fair value of asset 48,618 41,800  
LDI [MEmber] | Fair Value, Inputs, Level 1 [Member]      
Fair value of asset 48,618 41,800  
LDI [MEmber] | Fair Value, Inputs, Level 2 [Member]      
Fair value of asset 0 0  
LDI [MEmber] | Fair Value, Inputs, Level 3 [Member]      
Fair value of asset 0 0  
Bond Funds [Member]      
Fair value of asset 29,352 27,286  
Bond Funds [Member] | Fair Value, Inputs, Level 1 [Member]      
Fair value of asset 29,352 27,286  
Bond Funds [Member] | Fair Value, Inputs, Level 2 [Member]      
Fair value of asset 0 0  
Bond Funds [Member] | Fair Value, Inputs, Level 3 [Member]      
Fair value of asset 0 0  
Defined Benefit Plan, Other Assets [Member]      
Fair value of asset 1,075 889  
Defined Benefit Plan, Other Assets [Member] | Fair Value, Inputs, Level 1 [Member]      
Fair value of asset 1,075 519  
Defined Benefit Plan, Other Assets [Member] | Fair Value, Inputs, Level 2 [Member]      
Fair value of asset 0 62  
Defined Benefit Plan, Other Assets [Member] | Fair Value, Inputs, Level 3 [Member]      
Fair value of asset 0 308  
Defined Benefit Plan, Equity Securities [Member]      
Fair value of asset $ 0 369  
Defined Benefit Plan, Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]      
Fair value of asset   369  
Defined Benefit Plan, Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]      
Fair value of asset   0  
Defined Benefit Plan, Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]      
Fair value of asset   $ 0