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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
 12 Months Ended
Dec. 31, 2017
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]  
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
 
The components of accumulated other comprehensive income (loss), net of tax, are as follows (dollar amounts in thousands):
 
Foreign Currency
Translation
Adjustments
 
Net Unrealized
Gains (Losses) On
Available-For-Sale
Securities
 
Total
Accumulated Other
Comprehensive Loss
Balance as of January 1, 2015
$
(11,464
)
 
$
260

 
$
(11,204
)
Activity, net of tax
233

 
(272
)
 
(39
)
Balance as of December 31, 2015
(11,231
)
 
(12
)
 
(11,243
)
Activity, net of tax
(16
)
 
(1
)
 
(17
)
Balance as of December 31, 2016
(11,247
)
 
(13
)
 
(11,260
)
Activity, net of tax
1,113

 
15

 
1,128

Balance as of December 31, 2017
$
(10,134
)
 
2

 
$
(10,132
)