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OTHER INCOME , NET
 3 Months Ended
Mar. 31, 2014
Other Income and Expenses [Abstract]  
OTHER INCOME (EXPENSE), NET
OTHER INCOME (EXPENSE), NET
The principal components of other income (expense), net, are as follows (in thousands):
 
 
Three Months Ended March 31,
 
2014
 
2013
Interest and investment income
$
48

 
$
8

Income tax expense
(112
)
 
(297
)
Other non-operating income
—

 
10

Total other income (expense), net
$
(64
)
 
$
(279
)