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AVAILABLE-FOR-SALE SECURITIES (Tables)
9 Months Ended
Sep. 30, 2013
AVAILABLE-FOR-SALE SECURITIES  
Schedule of available-for-sale securities

 

   
  As at
September 30,
2013
  As at
December 31,
2012
 
 

Available-for-sale securities in an unrealized gain position:

             
 

Cost (net of impairments)

  $ 43,474   $ 4,352  
 

Unrealized gains in accumulated other comprehensive loss

    14,734     1,902  
             
 

Estimated fair value

    58,208     6,254  
             
 

Available-for-sale securities in an unrealized loss position:

             
 

Cost (net of impairments)

    28,028     48,047  
 

Unrealized losses in accumulated other comprehensive loss

    (3,138 )   (9,582 )
             
 

Estimated fair value

    24,890     38,465  
             
 

Total estimated fair value of available-for-sale securities

  $ 83,098   $ 44,719