Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2011

Earnings Per Share [Abstract]

Comparison Of Basic And Diluted Earnings Per Share

	Three Months Ended					Nine Months Ended
	September 30,					September 30,
	2011			2010		2011		2010
Basic (loss) earnings per share:
Net (loss) income	$	(10,972	)	$	254,520	$	91,448	$	572,219
Weighted average common shares outstanding		38,110,368			45,544,060		38,078,116		48,580,541
Basic (loss) earnings per share	$	(0.29	)	$	5.59	$	2.40	$	11.78

	Three Months Ended					Nine Months Ended
	September 30,					September 30,
	2011			2010		2011		2010
Diluted (loss) earnings per share:
Net (loss) income	$	(10,972	)	$	254,520	$	91,448	$	572,219
Weighted average common shares outstanding		38,110,368			45,544,060		38,078,116		48,580,541
Share equivalents:
Warrants and options		—			1,689,743		413,228		1,627,137
Restricted stock units		—			631,841		443,443		659,402
LTIP awards		—			974,347		823,778		1,020,310
Employee stock purchase plan		—			—		1,215		—
Weighted average common shares and common share equivalents outstanding — diluted		38,110,368			48,839,991		39,759,780		51,887,390
Diluted (loss) earnings per share	$	(0.29	)	$	5.21	$	2.30	$	11.03