Net Income per Share (Tables)

9 Months Ended

Sep. 30, 2013

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 nine months ended September 30, 2013 and 2012 (in thousands, except per share data):

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2013		2012		2013		2012
Numerator:
Net income	$	79,756	$	48,231	$	213,138	$	135,697
Denominator:
Shares used for basic net income per share	178,235		177,455		178,008		178,040
Effect of dilutive securities:
Stock options	1,580		2,101		1,693		2,207
RSUs and deferred stock units	2,107		1,497		1,922		1,491
Shares used for diluted net income per share:	181,922		181,053		181,623		181,738
Basic net income per share	$	0.45	$	0.27	$	1.20	$	0.76
Diluted net income per share	$	0.44	$	0.27	$	1.17	$	0.75

Schedule of Shares Excluded from Computation of Diluted Earnings Per Share

The number of potentially outstanding shares excluded from the computation of diluted earnings per share for the three and nine months ended September 30, 2013 and 2012 are as follows (in thousands):

	For the Three Months Ended September 30,		For the Nine Months Ended September 30,
	2013	2012	2013	2012
Options	1,308	2,438	1,782	2,735
Service-based RSUs	37	1,321	234	1,401
Performance-based RSUs	1,140	1,518	1,145	1,536
Total shares excluded from computation	2,485	5,277	3,161	5,672