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Inventories (Tables)
3 Months Ended
Mar. 31, 2019
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]

 

March, 31

2019

 

December, 31

2018

In thousands

 

Raw materials

$

985

 

$

1,178

Work-in-progress

 

805

   

626

Finished goods

 

272

 

 

397

Total Inventory

$

2,062

 

$

2,201