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Restructuring (Tables)
9 Months Ended
Sep. 30, 2019
Restructuring [Abstract]  
Restructuring Activity See the table below for detail of restructuring activity for the three months ended March 31, 2019 (U.S. dollars in thousands):

Beginning balance at January 1, 2019
 
$
15,462
 
Amounts paid
   
(15,046
)
Adjustments
   
(416
)
Ending balance at March 31, 2019
 
$