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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Notes)
 6 Months Ended
Jun. 30, 2017
Stockholders' Equity Note [Abstract]  
Comprehensive Income (Loss) Note [Text Block] ACCUMULATED OTHER COMPREHENSIVE LOSS

Accumulated other comprehensive loss consisted of the following (amounts in thousands):
 
Currency
Translation
Adjustments
 
Unrecognized
Losses and
Prior Service
Cost
 
 
 
Total
Balance at April 1, 2017
$
(153,524
)
 
$
(24,917
)
 
$
(178,441
)
Currency translation adjustments
9,324

 
—

 
9,324

Defined benefit pension plan entries:
 

 
 

 
 

  Amortization of unrecognized losses and prior service cost,
  net of tax of $(97)
—

 
989

 
989

Balance at June 30, 2017
$
(144,200
)
 
$
(23,928
)
 
$
(168,128
)
 
Currency
Translation
Adjustments
 
Unrecognized
Losses and
Prior Service
Cost
 
 
 
Total
Balance at January 1, 2017
$
(162,628
)
 
$
(25,650
)
 
$
(188,278
)
Currency translation adjustments
18,428

 
—

 
18,428

Defined benefit pension plan entries:
 

 
 

 
 

  Amortization of unrecognized losses and prior service cost,
  net of tax of $(111)
—

 
1,722

 
1,722

Balance at June 30, 2017
$
(144,200
)
 
$
(23,928
)
 
$
(168,128
)