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Inventories (Tables)
12 Months Ended
Dec. 31, 2020
Inventories (Tables) [Line Items]  
Schedule of Inventory, Current [Table Text Block]

In thousands

2020

 

2019

Raw materials

$

1,124

$

1,393

Work-in-progress

324

512

Finished goods

 

94

 

 

277

Total inventory

$

1,542

 

$

2,182