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Inventories (Tables)
9 Months Ended
Sep. 30, 2018
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]

 

In thousands

September 30

2018

 

 

December 31

2017

Raw materials

$

1,200

 

$

1,204

Work-in-progress

 

588

   

704

Finished goods

 

167

 

 

256

Total Inventory

$

1,955

 

$

2,164