EARNINGS (LOSS) PER SHARE

9 Months Ended

Sep. 30, 2011

17. EARNINGS (LOSS) PER SHARE

Earnings (loss) per share for the three-month and nine-month periods ended September 30, 2011 and 2010 were calculated as follows:

		Three Months Ended September 30					Nine Months Ended September 30

		2011		2010			2011		2010
Net income (loss)		$	40,862	$	(207,882	)	$	103,704	$	(177,063	)

Basic weighted-average number of common shares outstanding (000s)			302,702		163,295			303,285		160,082
Dilutive potential common shares (000s):
	Stock options and RSUs		7,908		—			8,770		—
	Convertible debt		12,173		—			16,955		—

Diluted weighted-average number of common shares outstanding (000s)			322,783		163,295			329,010		160,082

Basic earnings (loss) per share		$	0.13	$	(1.27	)	$	0.34	$	(1.11	)
Diluted earnings (loss) per share		$	0.13	$	(1.27	)	$	0.32	$	(1.11	)

In the three-month and nine-month periods ended September 30, 2011, stock options to purchase approximately 285,000 and 259,000 common shares of the Company, respectively, had exercise prices greater than the average trading price of the Company's common shares, and were not included in the computation of diluted earnings (loss) per share because the effect would have been anti-dilutive, compared with approximately 1,018,000 and 1,787,000 stock options in the corresponding periods of 2010.