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IMPAIRMENT OF LONG-TERM ASSETS (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended 36 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2011
Impairment of long-term assets:        
Impairment of long-term assets $ 500 $ 4,500 $ 1,500  
Cost method investment (unlisted)
        
Impairment of long-term assets:        
Impairment of long-term assets 0 3,000 0  
FSRU conversion parts
        
Impairment of long-term assets:        
Impairment of long-term assets $ 500 $ 1,500 $ 1,500 $ 3,500