RESTRUCTURING ACTIVITIES (Tables)
 12 Months Ended
Dec. 31, 2016
RESTRUCTURING ACTIVITIES [Abstract]  
Activity and liability balances related to restructuring charges
Activity and liability balances related to restructuring costs for the years ended December 31, 2015 and 2016 are as follows:

 
    
2015
     
2016
    
 
 
Liability at
     
Cash Payments
  
Liability at
     
Cash Payments
  
Liability at
 
 
 
December 31,
  
New
  
and Other
  
December 31,
  
New
  
and Other
  
December 31,
 
 
 
2014
  
Charges
  
Settlements
  
2015
  
Charges
  
Settlements
  
2016
 
Severance costs
 
$
-
  
$
1,144
  
$
(1,034
)
 
$
110
  
$
1,407
  
$
(929
)
 
$
588
 
Other restructuring costs
  
-
   
626
   
(626
)
  
-
   
2
   
(2
)
  
-
 
     Total
 
$
-
  
$
1,770
  
$
(1,660
)
 
$
110
  
$
1,409
  
$
(931
)
 
$
588