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Other Assets
 12 Months Ended
Dec. 31, 2016
Other Assets [Abstract]  
Other Assets
6. Other Assets

Other assets consist of the following (U.S. dollars in thousands):

  
December 31,
 
  
2015
  
2016
 
       
Deferred taxes 
 
$
40,373
  
$
35,752
 
Deposits for noncancelable operating leases 
  
39,016
   
38,858
 
Deposit for customs assessment 
  
35,424
   
—
 
Cash surrender value for life insurance policies
  
27,292
   
32,286
 
Other 
  
23,354
   
29,573
 
  
$
165,459
  
$
136,469