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Inventories (Tables)
3 Months Ended
Mar. 31, 2023
Inventories  
Schedule of inventories

March 31, 

December 31, 

 

2023

2022

 

(in thousands)

 

Raw materials and supplies

    

$

47,919

    

$

47,607

Work in process

 

30,873

 

37,090

Finished goods

 

24,855

 

18,887

Total inventories

$

103,647

$

103,584