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Inventories (Tables)
9 Months Ended
Sep. 30, 2021
Inventory Disclosure [Abstract]  
Schedule of Inventory Current

Inventories, net of reserve for excess and obsolete items, consist of the following:

 

 

 

September 30,

 

 

December 31,

 

 

 

2021

 

 

2020

 

Work in process

 

$

39,622

 

 

$

34,355

 

Parts inventory

 

 

5,013

 

 

 

4,476

 

Total inventories, net

 

$

44,635

 

 

$

38,831