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Other Income (Tables)
 12 Months Ended
Dec. 31, 2018
Other Income [Abstract]  
Other Income
Other income consists of the following:

  
Year Ended December 31
 
  
2018
  
2017
  
2016
 
Investment loss
 
$
(228
)
 
$
(96
)
 
$
(276
)
Licensing fees
  
--
   
651
   
546
 
Other
  
764
   
663
   
259
 
Total
 
$
536
  
$
1,218
  
$
529