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INVENTORIES (Tables)
6 Months Ended
Jun. 30, 2020
INVENTORIES  
Schedule of inventory

    

    

June 30, 2020

    

December 31, 2019

(in thousands)

Raw materials

$

17,963

$

12,365

Finished goods

 

20,223

 

24,724

Materials and supplies

 

 

453

$

38,186

$

37,542