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

In thousands

2019

 

2018

Raw materials

$

1,393

$

1,178

Work-in-progress

512

626

Finished goods

 

277

 

 

397

Total inventory

$

2,182

 

$

2,201