Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2011

Earnings Per Share [Abstract]

Effect of potentially dilutive stock outstanding

	Three months ended September 30, 2011								Nine months ended September 30, 2011
	Income (Numerator)			Shares (Denominator)		Per-Share Amount			Income (Numerator)			Shares (Denominator)		Per-Share Amount
Basic EPS
Net Income available to common stockholders	$	31,060			89,449	$	0.35		$	82,135			89,350	$	0.92
Effect of Dilutive Securities
Equity awards		—			290					—			352
Diluted EPS
Net Income available to common stockholders	$	31,060			89,739	$	0.35		$	82,135			89,702	$	0.92
	Three months ended September 30, 2010								Nine months ended September 30, 2010
	Income (Numerator)			Shares (Denominator)		Per-Share Amount			Income (Numerator)			Shares (Denominator)		Per-Share Amount
Basic EPS
Net Loss available to common stockholders	$	(22,628	)		89,236	$	(0.25	)	$	(86,229	)		86,489	$	(1.00	)
Effect of Dilutive Securities
Equity awards		—			—					—			—
Diluted EPS
Net Loss available to common stockholders	$	(22,628	)		89,236	$	(0.25	)	$	(86,229	)		86,489	$	(1.00	)