Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2011

Earnings Per Share (Tables) [Abstract]

Effect of potentially dilutive stock outstanding

	Three months ended June 30, 2011						Six months ended June 30, 2011
	Income		Shares		Per-Share		Income		Shares		Per-Share
	(Numerator)		(Denominator)		Amount		(Numerator)		(Denominator)		Amount
Basic EPS
Net Income available to common stockholders	$	38,611		89,310	$	0.43	$	51,075		89,299	$	0.57
Effect of Dilutive Securities
Equity awards		—		402				—		384
Diluted EPS
Net Income available to common stockholders	$	38,611		89,712	$	0.43	$	51,075		89,683	$	0.57

	Three months ended June 30, 2010								Six months ended June 30, 2010
	Income			Shares		Per-Share			Income			Shares		Per-Share
	(Numerator)			(Denominator)		Amount			(Numerator)			(Denominator)		Amount
Basic EPS
Net Income available to common stockholders	$	(50,744	)		88,501	$	(0.57	)	$	(63,601	)		85,145	$	(0.75	)
Effect of Dilutive Securities
Equity awards		—			—					—			—
Diluted EPS
Net Income (loss) available to common stockholders	$	(50,744	)		88,501	$	(0.57	)	$	(63,601	)		85,145	$	(0.75	)