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Inventories
12 Months Ended
Dec. 31, 2019
Inventory Disclosure [Abstract]  
Inventories Inventories
 
Inventories as of December 31, 2019 and 2018 consisted of (in thousands):
 20192018
Raw materials$14,117  $10,456  
Work in progress133  116  
Finished goods10,989  8,391  
Inventories reserve(2,208) (2,667) 
 Inventories, net$23,031  $16,296