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Inventory
6 Months Ended
Jun. 30, 2020
Inventory Disclosure [Abstract]  
Inventory

4. Inventory

Inventory consisted of the following at June 30, 2020 and December 31, 2019 (in thousands):

 

 

 

 

 

 

 

 

 

  

June 30, 2020

 

 

December 31, 2019

 

Finished goods

$

625

 

 

$

105

 

Work-in-process

 

1,190

 

 

 

1,229

 

Raw materials and supplies

 

33,162

 

 

 

35,023

 

Inventory

$

34,977

 

 

$

36,357