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Note 11 - Accumulated Other Comprehensive Income (Tables)
9 Months Ended
Sep. 30, 2021
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

Balance as of December 31, 2020

  $ 869  

Foreign currency translation adjustment

    255  

Balance as of March 31, 2021

    1,124  

Foreign currency translation adjustment

    312  

Balance as of June 30, 2021

    1,436  

Foreign currency translation adjustment

    (471 )

Balance as of September 30, 2021

  $ 965