Organization and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Computation of Net Income Per Share

The computation of earnings per share is as follows:

	Year ended December 31,
	2016		2015		2014
	(in thousands, except per share data)
Basic earnings per share:
Net income	$	186,678	$	122,641	$	266,799
Shares used in computation:
Weighted-average common shares outstanding	428,822		425,889		420,544
Basic earnings per share	$	0.44	$	0.29	$	0.63
Diluted earnings per share:
Net income	$	186,678	$	122,641	$	266,799
Shares used in computation:
Weighted-average common shares outstanding	428,822		425,889		420,544
Employee stock options	9,830		10,567		11,350
Weighted-average number of shares	438,652		436,456		431,894
Diluted earnings per share	$	0.43	$	0.28	$	0.62

Summary of Potential Common Shares Excluded from Diluted Calculation

The following table summarizes the potential common shares excluded from the diluted calculation:

	Year ended December 31,
	2016	2015	2014
	(in thousands)
Employee stock options	1,545	517	917