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ASSET RETIREMENT OBLIGATION (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Asset Retirement Obligation Disclosure [Abstract]    
Related asset removal period 55 years  
Asset Retirement Obligation, Roll Forward Analysis    
Long-term portion of asset retirement obligation $ 42,067 $ 47,574
Asset Retirement Obligation Costs    
Asset Retirement Obligation, Roll Forward Analysis    
Beginning balance 48,056 54,211
Adjustment due to changes in estimates (5,343) 2,082
Accretion of liability 5,090 754
Liabilities settled (4,310) (6,105)
Foreign Currency (1,002) (2,886)
Ending balance 42,491 48,056
Less: current portion 424 482
Long-term portion of asset retirement obligation $ 42,067 $ 47,574