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Inventories (Tables)
3 Months Ended
Mar. 31, 2021
Inventories (Tables) [Line Items]  
Schedule of Inventory, Current [Table Text Block]

 

March 31
2021

 

December 31
2020

In thousands

 

Raw materials

$

1,246

 

$

1,124

Work-in-progress

178

324

Finished goods

 

13

 

 

94

 

$

1,437

 

$

1,542