Available For Sale Investments

12 Months Ended

Dec. 31, 2011

Available for Sale Investments

Available For Sale Investments

AVAILABLE FOR SALE INVESTMENTS

The following table presents changes in available for sale investments for the years ended:

	As at December 31, 2011			As at December 31, 2010
	Riverstone			Riverstone
	Fair Value		Shares	Fair Value		Shares
Balance at beginning of year	$	928	1,300,000	$	181	700,000
Acquisitions	469		700,000	128		600,000
OCI - unrealized gain/(loss)	19		—	619		—
Balance at end of year	$	1,416	2,000,000	$	928	1,300,000

Available for sale assets are included in the Prepaids and Other account in the balance sheet.