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Note 7 - Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2020
Notes Tables  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
   

Total

   

Level 1

   

Level 2

   

Level 3

 

As of September 30, 2020

                               

Financial assets:

                               

Deferred compensation plan

  $ 4,801     $ 3,932     $ 869     $ -  

Foreign currency forward contracts

    2       -       2       -  

Total financial assets

  $ 4,803     $ 3,932     $ 871     $ -  
                                 

Financial liabilities:

                               

Foreign currency forward contracts

  $ (529 )   $ -     $ (529 )   $ -  
                                 

As of December 31, 2019

                               

Financial assets:

                               

Deferred compensation plan

  $ 5,150     $ 4,268     $ 882     $ -  
                                 

Financial liabilities:

                               

Foreign currency forward contracts

  $ (138 )   $ -     $ (138 )   $ -