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INVENTORIES
3 Months Ended
Mar. 31, 2023
INVENTORIES  
INVENTORIES

8.    INVENTORIES

Inventories consist of the following:

    

March 31, 

    

December 31, 

December 31, 

 

2023

2022

(in thousands)

Raw materials and supplies

$

36,215

$

37,210

Work in process

 

15,199

 

14,190

Finished goods

 

15,425

 

21,615

Total inventories

$

66,839

$

73,015