Net Income (Loss) Per Share (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Reconciliation of earnings attributable to common stockholders, basic and diluted

The following tables reconcile the Company's net income (loss) attributable to common stockholders to basic net income attributable to common stockholders and diluted net income (loss) attributable to common stockholders for the three months ended March 31, 2013 and 2012:

	Three Months Ended March 31, 2013
	Continuing Operations			Discontinued Operations			Total
	(in thousands)
Net income (loss) attributable to common stockholders	$	101,128		$	(465	)	$	100,663
Participating basic earnings	(1,270		)	—			(1,270		)
Basic net income (loss) attributable to common stockholders	99,858			(465		)	99,393
Reallocation of participating earnings	35			—			35
Diluted income (loss) attributable to common stockholders	$	99,893		$	(465	)	$	99,428

	Three Months Ended March 31, 2012
	Continuing Operations			Discontinued Operations			Total
	(in thousands)
Net income attributable to common stockholders	$	203,924		$	10,695		$	214,619
Participating basic earnings	(2,326		)	(122		)	(2,448		)
Basic income attributable to common stockholders	201,598			10,573			212,171
Reallocation of participating earnings	68			3			71
Diluted income attributable to common stockholders	$	201,666		$	10,576		$	212,242

Reconciliation Of Basic To Diluted Weighted Average Common Shares Outstanding

The following table is a reconciliation of basic weighted average common shares outstanding to diluted weighted average common shares outstanding for the three months ended March 31, 2013 and 2012:

	Three Months Ended March 31,
	2013	2012
	(in thousands)
Weighted average common shares outstanding:
Basic	128,940	122,480
Dilutive common stock options (a)	157	150
Convertible Senior Notes dilution	3,534	3,460
Contingently issuable performance unit shares	120	157
Diluted	132,751	126,247

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(a) Options to purchase 98,819 shares of the Company's common stock were excluded from the diluted income per share calculations for the three months ended March 31, 2013 because they would have been anti-dilutive to the calculation.