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Inventories
6 Months Ended
Jun. 30, 2020
Inventory Disclosure [Abstract]  
Inventories

(3)

Inventories

Inventories consist of the following:

 

 

 

June 30,

 

 

December 31,

 

(in thousands)

 

2020

 

 

2019

 

Raw materials

 

$

389

 

 

$

375

 

Work-in-process

 

 

334

 

 

 

279

 

Total inventories

 

$

723

 

 

$

654