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CLOSURE AND POST-CLOSURE OBLIGATIONS (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Changes to reported closure and post-closure obligations      
Closure and post-closure obligations, beginning of period $ 17,468    
Accretion expense 330 307  
Payments (114)    
Adjustments 2,863    
Currency translation (79)    
Closure and post-closure obligations, end of period 20,468    
Less current portion (916)   (949)
Long-term portion $ 19,552   $ 16,519