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LONG-TERM INVESTMENTS (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Components of long-term investments    
Long-term investments $ 173,752 $ 200,721
Equity method investments
   
Components of long-term investments    
Long-term investments 10,873 148,607
Cost method investments
   
Components of long-term investments    
Long-term investments 82,318 39,014
Auction rate securities
   
Components of long-term investments    
Long-term investments 5,870 13,100
Long-term marketable equity securities
   
Components of long-term investments    
Long-term investments $ 74,691