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INVENTORIES (Tables)
3 Months Ended
Mar. 31, 2015
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
Inventories consisted of the following (amounts in thousands):
 
March 31,
2015
 
December 31,
2014
Raw material
$
98,833

 
$
119,989

Work-in-process
41,218

 
41,073

Finished goods
177,563

 
179,998

 
317,614

 
341,060

Adjustment to LIFO basis
(10,296
)
 
(9,628
)
 
$
307,318

 
$
331,432