Net Income per Share (Tables)

6 Months Ended

Jun. 30, 2015

Earnings Per Share Reconciliation [Abstract]

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 three and six months ended June 30, 2015 and 2014 (in thousands, except per share data):

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2015		2014		2015		2014
Numerator:
Net income	$	67,200	$	72,886	$	144,946	$	145,686
Denominator:
Shares used for basic net income per share	178,682		178,081		178,614		178,393
Effect of dilutive securities:
Stock options	912		1,242		954		1,312
RSUs and deferred stock units	1,144		1,518		1,214		1,734
Convertible senior notes	—		—		—		—
Warrants related to issuance of convertible senior notes	—		—		—		—
Shares used for diluted net income per share	180,738		180,841		180,782		181,439
Basic net income per share	$	0.38	$	0.41	$	0.81	$	0.82
Diluted net income per share	$	0.37	$	0.40	$	0.80	$	0.80

Schedule of Shares Excluded from Computation of Diluted Earnings Per Share

The number of potential outstanding shares excluded from the computation of diluted net income per share for the three and six months ended June 30, 2015 and 2014 are as follows (in thousands):

	For the Three Months Ended June 30,		For the Six Months Ended June 30,
	2015	2014	2015	2014
Stock options	—	474	13	563
Service-based RSUs	28	1,008	325	761
Performance-based RSUs	1,148	575	1,148	575
Convertible senior notes	7,704	7,704	7,704	7,704
Warrants related to issuance of convertible senior notes	7,704	7,704	7,704	7,704