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Inventories
3 Months Ended
Mar. 31, 2018
Inventory Disclosure [Abstract]  
Inventories

(2)

Inventories

Inventories consist of the following:

 

(in thousands)

 

March 31, 2018

 

 

December 31, 2017

 

Raw materials

 

$

275

 

 

$

298

 

Work-in-process

 

 

682

 

 

 

721

 

Finished goods

 

 

323

 

 

 

229

 

Total inventories

 

$

1,280

 

 

$

1,248