AVAILABLE-FOR-SALE SECURITIES (Tables)

9 Months Ended

Sep. 30, 2012

AVAILABLE-FOR-SALE SECURITIES

Schedule of available-for-sale securities

	As at September 30, 2012			As at December 31, 2011
Available-for-sale securities in an unrealized gain position
Cost (net of impairments)	$	78,272		$	127,344
Unrealized gains in accumulated other comprehensive gain (loss)		13,219			16,408
Estimated fair value		91,491			143,752
Available-for-sale securities in an unrealized loss position
Cost (net of impairments)		709			1,717
Unrealized losses in accumulated other comprehensive gain (loss)		(50	)		(58	)
Estimated fair value		659			1,659
Total estimated fair value of available-for-sale securities	$	92,150		$	145,411