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Inventories (Tables)
3 Months Ended
Mar. 31, 2019
Inventory Disclosure [Abstract]  
Inventory

Inventories consisted of the following (in thousands):

 

 

 

March 31, 2019

 

 

December 31, 2018

 

Raw materials

 

$

663

 

 

$

758

 

Work in process

 

 

662

 

 

 

555

 

Finished goods

 

 

1,678

 

 

 

1,634

 

 

 

$

3,003

 

 

$

2,947