Net Profit per Share (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Schedule of Earnings Per Share Basic And Diluted

The following table sets forth the computation of basic and diluted net income per share attributable to common stock (in thousands, except per share amounts): 

	Year Ended December 31,
	2019		2018		2017
Numerator:
Net income	$	442,776	$	400,235	$	231,418
Denominator:
Weighted average common shares outstanding, basic	79,424		80,064		80,085
Dilutive effect of potential common stock	676		1,293		1,747
Total shares, diluted	80,100		81,357		81,832
Net income per share, basic	$	5.57	$	5.00	$	2.89
Net income per share, diluted	$	5.53	$	4.92	$	2.83