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Note 8 - Investment in Joint Ventures (Tables)
3 Months Ended
Mar. 31, 2024
Notes Tables  
Equity Method Investments [Table Text Block]
   

March 31,

   

December 31,

 
   

2024

   

2023

 

CETS

  $ 67,343     $ 62,704  

PVD-Expro

    3,658       3,698  

Total

  $ 71,001     $ 66,402