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Inventories
 12 Months Ended
Dec. 31, 2019
Inventory Disclosure [Abstract]  
Inventories

5.  INVENTORIES

Inventories consisted of the following at December 31, 2019 and 2018 (in thousands):

 

 

2019

 

 

2018

 

Finished goods

 

$

26,507

 

 

$

26,636

 

Parts and materials

 

 

21,419

 

 

 

13,704

 

Work in progress

 

 

2,237

 

 

 

5,324

 

Total inventories

 

$

50,163

 

 

$

45,664

 

 

We include freight costs incurred for shipping inventory to our clients in the Cost of product sales caption in the accompanying Consolidated Statements of Operations.