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Note 3 - Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Total financial assets $ 3,918 $ 4,280
Total financial liabilities (169)  
Fair Value, Inputs, Level 1 [Member]    
Total financial assets 3,307 3,391
Total financial liabilities 0  
Fair Value, Inputs, Level 2 [Member]    
Total financial assets 611 889
Total financial liabilities (169)  
Fair Value, Inputs, Level 3 [Member]    
Total financial assets 0 0
Total financial liabilities 0  
Deferred Compensation Plan [Member]    
Deferred compensation plan 3,794 3,912
Deferred Compensation Plan [Member] | Fair Value, Inputs, Level 1 [Member]    
Deferred compensation plan 3,307 3,391
Deferred Compensation Plan [Member] | Fair Value, Inputs, Level 2 [Member]    
Deferred compensation plan 487 521
Deferred Compensation Plan [Member] | Fair Value, Inputs, Level 3 [Member]    
Deferred compensation plan 0 0
Interest Rate Swap [Member]    
Derivative assets 124 326
Derivative liabilities (163)  
Interest Rate Swap [Member] | Fair Value, Inputs, Level 1 [Member]    
Derivative assets 0 0
Derivative liabilities 0  
Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member]    
Derivative assets 124 326
Derivative liabilities (163)  
Interest Rate Swap [Member] | Fair Value, Inputs, Level 3 [Member]    
Derivative assets 0 0
Derivative liabilities 0  
Foreign Exchange Forward [Member]    
Derivative assets   42
Derivative liabilities (6) (115)
Foreign Exchange Forward [Member] | Fair Value, Inputs, Level 1 [Member]    
Derivative assets   0
Derivative liabilities 0 0
Foreign Exchange Forward [Member] | Fair Value, Inputs, Level 2 [Member]    
Derivative assets   42
Derivative liabilities (6) (115)
Foreign Exchange Forward [Member] | Fair Value, Inputs, Level 3 [Member]    
Derivative assets   0
Derivative liabilities $ 0 $ 0