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OTHER INCOME (EXPENSE) , NET (Tables)
3 Months Ended
Mar. 31, 2016
Other Income and Expenses [Abstract]  
Principal components of other income (expense), net
The principal components of other income (expense), net, are as follows (in thousands):
 
 
Three Months Ended March 31,
 
2016
 
2015
Interest and investment income
$
15

 
$
14

Income tax expense
(87
)
 
(84
)
Other non-operating income
96

 

Total other income (expense), net
$
24

 
$
(70
)