Net Income per Share (Tables)

12 Months Ended

Dec. 31, 2018

Schedule of Components Used in Diluted and Basic Income Per Common Share

The following table sets forth the components used in the computation of basic and diluted net income per share for the years ended December 31, 2018, 2017 and 2016 (in thousands, except per share data):



	2018		2017		2016
Numerator:
Net income	$	298,373	$	222,766	$	320,727
Denominator:
Shares used for basic net income per share	167,312		171,559		174,917
Effect of dilutive securities:
Stock options	132		260		384
RSUs and DSUs	1,744		892		914
Convertible senior notes	—		—		—
Warrants related to issuance of convertible senior notes	—		—		—
Shares used for diluted net income per share	169,188		172,711		176,215
Basic net income per share	$	1.78	$	1.30	$	1.83
Diluted net income per share	$	1.76	$	1.29	$	1.82

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The number of potentially outstanding shares excluded from the computation of diluted net income per share for the years ended December 31, 2018, 2017 and 2016 (in thousands):



	2018	2017	2016
Stock options	—	9	58
Service-based RSUs	899	3,258	2,262
Performance-based RSUs	1,509	1,054	690
Convertible senior notes	19,797	7,704	7,704
Warrants related to issuance of convertible senior notes	19,797	7,704	7,704
Total shares excluded from computation	42,002	19,729	18,418