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Note 5 - Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2023
Notes Tables  
Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table Text Block]

Beginning balance, January 1, 2023

 $81,533 

Changes in fair value

  - 

Additional contingent consideration (1)

  11,490 

Payment of contingent consideration (2)

  (53,786)

Present value interest accretion

  (491)

Ending balance, September 30, 2023

 $38,746