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Inventories (Tables)
9 Months Ended
Sep. 30, 2021
Inventories (Tables) [Line Items]  
Schedule of Inventory, Current [Table Text Block]
   

September 30

2021

December 31

2020

In thousands

 

Raw materials

 

$

964

$

1,124

Work-in-progress

   

244

 

324

Finished goods

 

 

13

 

94

 

 

$

1,221

$

1,542