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Inventory
 3 Months Ended
Mar. 31, 2020
Inventory  
Inventory

 

4.  Inventory

 

             Inventory as of March 31, 2020 and December 31, 2019 consisted of the following (in thousands):

 

 

 

 

 

 

 

 

 

 

    

March 31,

    

December 31,

 

 

 

2020

 

2019

 

Raw materials and supplies - production locations

 

$

59,086

 

$

48,011

 

Raw materials and supplies - customer locations

 

 

10,423

 

 

9,241

 

Work-in-process

 

 

20,234

 

 

12,529

 

Finished goods

 

 

3,229

 

 

2,610

 

Inventory

 

$

92,972

 

$

72,391