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

Inventories consist of:

 

 

 

 

 

(in thousands)

 

December 31, 2018

 

 

December 31, 2017

 

Raw materials

 

$

358

 

 

$

298

 

Work-in-process

 

 

500

 

 

 

721

 

Finished goods

 

 

 

 

 

229

 

Total Inventory

 

$

858

 

 

$

1,248