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Inventories (Tables)
12 Months Ended
Dec. 31, 2018
Inventory Disclosure [Abstract]  
Inventories

Inventories consisted of the following at December 31, 2018 and 2017.

 

 

December 31, 2018

 

 

December 31, 2017

 

 

(in thousands)

 

Raw materials

$

53

 

 

$

2

 

Work-in-process

$

16

 

 

$

-

 

Total inventories

$

69

 

 

$

2