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Inventories
9 Months Ended
Sep. 30, 2019
Inventory Disclosure [Abstract]  
Inventory Inventory
Inventories as of September 30, 2019 and December 31, 2018 are summarized in the following table:
September 30,
2019
December 31,
2018
Finished goods$69,563  $69,041  
Contract assets34,792  26,692  
Work-in-process3,427  6,940  
Raw materials20,959  21,831  
Inventories - net$128,741  $124,504  

Inventories of the Company are valued at average cost or net realizable value, whichever is lower.