Net Income per Share (Tables)

6 Months Ended

Jun. 30, 2014

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 three and six months ended June 30, 2014 and 2013 (in thousands, except per share data):

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2014		2013		2014		2013
Numerator:
Net income	$	72,886	$	61,895	$	145,686	$	133,382
Denominator:
Shares used for basic net income per share	178,081		177,891		178,393		177,895
Effect of dilutive securities:
Stock options	1,242		1,724		1,312		1,750
RSUs and deferred stock units	1,518		1,773		1,734		1,830
Convertible senior notes	—		—		—		—
Warrants related to issuance of convertible senior notes	—		—		—		—
Shares used for diluted net income per share	180,841		181,388		181,439		181,475
Basic net income per share	$	0.41	$	0.35	$	0.82	$	0.75
Diluted net income per share	$	0.40	$	0.34	$	0.80	$	0.73

Schedule of Shares Excluded from Computation of Diluted Earnings Per Share

The number of potentially outstanding shares excluded from the computation of diluted net income per share for the three and six months ended June 30, 2014 and 2013 are as follows (in thousands):

	For the Three Months Ended June 30,		For the Six Months Ended June 30,
	2014	2013	2014	2013
Stock options	474	1,888	563	2,018
Service-based RSUs	1,008	159	761	327
Performance-based RSUs	575	1,148	575	1,148
Convertible senior notes	7,704	—	7,704	—
Warrants related to issuance of convertible senior notes	7,704	—	7,704	—