Net Income per Share (Tables)

6 Months Ended

Jun. 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 (in thousands, except per share data):

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Numerator:
Net income	$	61,895	$	44,239	$	133,382	$	87,466
Denominator:
Shares used for basic net income per share	177,891		178,547		177,895		178,333
Effect of dilutive securities:
Stock options	1,724		2,092		1,750		2,259
RSUs and deferred stock units	1,773		1,178		1,830		1,488
Shares used for diluted net income per share:	181,388		181,817		181,475		182,080
Basic net income per share	$	0.35	$	0.25	$	0.75	$	0.49
Diluted net income per share	$	0.34	$	0.24	$	0.73	$	0.48

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 are as follows (in thousands):

	Three Months Ended June 30,		Six Months Ended June 30,
	2013	2012	2013	2012
Options	1,888	3,084	2,018	2,883
Service-based RSUs	159	1,858	327	1,441
Performance-based RSUs	1,148	2,424	1,148	2,276
Total shares excluded from computation	3,195	7,366	3,493	6,600