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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables)
 12 Months Ended
Dec. 31, 2014
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Accumulated other comprehensive income (loss) consisted of the following (amounts in thousands):
 
Currency
Translation
Adjustments
 
Unrealized
Gain (Loss) on
Investments
 
Unrecognized
Losses and
Prior Service
Cost
 
 
 
Total
Balance at January 1, 2013
$
(20,793
)
 
$
3

 
$
(35,679
)
 
$
(56,469
)
Currency translation adjustments
(20,071
)
 
—

 
—

 
(20,071
)
  Unrealized loss on investments, net of tax of $0
—

 
(3
)
 
—

 
(3
)
  Defined benefit pension plan entries:
 

 
 

 
 

 
 

  Unrecognized prior service cost, net of tax of $(52)
—

 
—

 
85

 
85

  Unrecognized net gain, net of tax of $(8,648)
—

 
—

 
14,664

 
14,664

Balance at December 31, 2013
(40,864
)
 
—

 
(20,930
)
 
(61,794
)
Currency translation adjustments
(45,707
)
 
—

 
—

 
(45,707
)
  Defined benefit pension plan entries:
 

 
 

 
 

 
 

  Unrecognized prior service cost, net of tax of $(52)
—

 
—

 
85

 
85

  Unrecognized net loss, net of tax of $3,087
—

 
—

 
(5,214
)
 
(5,214
)
Balance at December 31, 2014
$
(86,571
)
 
$
—

 
$
(26,059
)
 
$
(112,630
)