Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Computation of basic and diluted earnings per share

The following table sets forth the computation of basic and diluted earnings per share (in thousands, except per share data):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Numerator for basic and diluted earnings
per share - net income (loss) attributable
to common stockholders	$	64,384	$	74,043	$	656,487	$	575,118
Denominator for basic earnings per
share - weighted average shares	373,023		369,089		372,052		366,096
Effect of dilutive securities:
Employee stock options	6		40		12		53
Non-vested restricted shares	348		515		464		464
Redeemable shares	1,096		1,096		1,096		1,281
Employee stock purchase program	14		—		14		—
Dilutive potential common shares	1,464		1,651		1,586		1,798
Denominator for diluted earnings per
share - adjusted weighted average shares	374,487		370,740		373,638		367,894
Basic earnings per share	$	0.17	$	0.20	$	1.76	$	1.57
Diluted earnings per share	$	0.17	$	0.20	$	1.76	$	1.56