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Note 3 - Inventories (Tables)
3 Months Ended
Mar. 31, 2024
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   

March 31,

   

December 31,

 
   

2024

   

2023

 
   

(Dollars in thousands)

 

Raw materials and purchased parts for assembly

  $ 18,945     $ 20,588  

Self-manufactured assembly parts and finished products

    34,929       24,449  

Total inventories

  $ 53,874     $ 45,037