Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2012

Earnings Per Share [Abstract]

Earnings Per Share

	For the three months ended				For the six months ended
	June 30,				June 30,
	2012		2011		2012		2011
Net income (loss) (in thousands)	$	(488,100)	$	167,454	$	(380,396)	$	304,063
Number of common shares:
Weighted average outstanding		348,162,723		347,132,830		348,081,399		346,984,194
Issued upon assumed exercise of outstanding stock options		–		2,583,711		–		2,643,537
Effect of issuance of nonvested restricted common stock		–		254,278		–		212,313
Weighted average and potential dilutive outstanding(1)		348,162,723		349,970,819		348,081,399		349,840,044
Earnings (loss) per share:
Basic	$	(1.40)	$	0.48	$	(1.09)	$	0.88
Diluted	$	(1.40)	$	0.48	$	(1.09)	$	0.87