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Inventories (Tables)
6 Months Ended
Jun. 30, 2021
Inventory Disclosure [Abstract]  
Schedule of Inventories

Inventories consisted of the following (in thousands):

 

 

June 30,
2021

 

 

December 31,
2020

 

Finished goods

 

$

18,009

 

 

$

16,461

 

Parts and materials

 

 

17,337

 

 

 

19,098

 

Work in progress

 

 

3,600

 

 

 

2,592

 

Total inventories

 

$

38,946

 

 

$

38,151