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INVENTORIES
9 Months Ended
Sep. 30, 2019
INVENTORIES  
INVENTORIES

9.    INVENTORIES

Inventories consist of the following:

    

September 30, 

    

December 31, 

(in thousands)

2019

2018

Raw materials and supplies

$

29,623

$

26,874

Work in process

 

7,868

 

10,671

Finished goods

 

7,522

 

9,225

Total inventories

$

45,013

$

46,770