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INVENTORIES (Tables)
12 Months Ended
Dec. 31, 2021
INVENTORIES  
Schedule of inventories

December 31, 

 

2021

2020

(in thousands)

Raw materials and supplies

$

42,231

$

21,754

Work in process

 

14,390

 

11,378

Finished goods

 

16,640

 

9,178

Total inventories

$

73,261

$

42,310