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Note 5 - Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2022
Notes Tables  
Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table Text Block]

Beginning balance, January 1, 2022

 $146,759 

Changes in fair value

  (10,974)

Payment of contingent consideration

  (16,135)

Present value interest accretion

  1,835 

Currency translation

  (3,169)

Ending balance, September 30, 2022

 $118,316