Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2019

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):

	Year Ended December 31,
	2019		2018		2017
Numerator for basic and diluted earnings per share -
net income attributable to common stockholders	$	1,232,432	$	758,250	$	463,595
Denominator for basic earnings per share - weighted average shares	401,845		373,620		367,237
Effect of dilutive securities:
Employee stock options	—		9		47
Non-vested restricted shares	835		512		482
Redeemable shares	1,112		1,096		1,235
Employee stock purchase program	16		13		—
Dilutive potential common shares	1,963		1,630		1,764
Denominator for diluted earnings per share - adjusted weighted average shares	403,808		375,250		369,001
Basic earnings per share	$	3.07	$	2.03	$	1.26
Diluted earnings per share	$	3.05	$	2.02	$	1.26