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General accounting principles (Tables)
9 Months Ended
Sep. 30, 2019
General accounting principles (Tables) [Abstract]  
Amounts recognized in the consolidated statement of financial position
Amounts recognized in the consolidated statement of financial position

$ in thousands
September 30, 2019
Lease liability (Other non-current liabilities)
2,194
Lease liability (Other current liabilities)
565
Right-of-use asset (Other property, plant and equipment)
2,732