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INVENTORIES (Tables)
6 Months Ended
Jun. 30, 2019
INVENTORIES  
Schedule of inventory

June 30, 2019

 

December 31, 2018

(in thousands)

Raw materials

$

16,685

$

15,219

Finished goods

 

22,570

 

28,540

Materials and supplies

 

697

 

1,233

$

39,952

$

44,992