Earnings Per Share (Tables)

3 Months Ended

Jun. 30, 2013

Earnings Per Share (Tables) [Abstract]

Computation of basic and diluted earnings per share

		Three Months Ended				Six Months Ended
		June 30,				June 30,
		2013		2012		2013		2012
Numerator for basic and diluted earnings
	per share - net income (loss) attributable
	to common stockholders	$	(8,508)	$	54,735	$	46,551	$	94,037
Denominator for basic earnings per
	share - weighted average shares		273,091		213,498		266,602		206,612
Effect of dilutive securities:
	Employee stock options		283		261		-		242
	Non-vested restricted shares		370		299		-		290
	Convertible senior unsecured notes		2,737		1,080		-		1,093
Dilutive potential common shares			3,390		1,640		0		1,625
Denominator for diluted earnings per
	share - adjusted weighted average shares		276,481		215,138		266,602		208,237
Basic earnings per share		$	(0.03)	$	0.26	$	0.17	$	0.46
Diluted earnings per share		$	(0.03)	$	0.25	$	0.17	$	0.45