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FAIR VALUE ACCOUNTING (Tables)
 12 Months Ended
Dec. 31, 2012
FAIR VALUE ACCOUNTING  
Schedule of assets and liabilities by level within the fair value hierarchy
  Fair Value as at December 31, 2012  
 
   Total   Level 1   Level 2   Level 3  
 
   (in thousands)
  

Assets:

                          

Cash and cash equivalents

   $ 70,921   $ 70,921   $ —   $ —  

Marketable equity securities

     3     3     —     —  
                   

 

   $ 70,924   $ 70,924   $ —   $ —  
                   

Liabilities:

                          

Accounts payable and accrued liabilities

   $ 21,235   $ —   $ 21,235   $ —  

Litigation settlement liability

     3,830     3,830     —     —  
                   

 

   $ 25,065   $ 3,830   $ 21,235   $ —  
                   


 

 
   Fair Value as at December 31, 2011  
 
   Total   Level 1   Level 2   Level 3  
 
   (in thousands)
  

Assets:

                          

Cash and cash equivalents

   $ 13,416   $ 13,416   $ —   $ —  

Short-term investments

     3,933     3,933     —     —  

Marketable equity securities

     1,480     897     583     —  
                   

 

   $ 18,829   $ 18,246   $ 583   $ —  
                   

Liabilities:

                          

Accounts payable and accrued liabilities

   $ 5,612   $ —   $ 5,612   $ —