NET INCOME PER SHARE

3 Months Ended

Mar. 31, 2012

NET INCOME PER SHARE

NET INCOME PER SHARE

Note 12 NET INCOME PER SHARE

Basic net income per share is calculated by using the weighted-average number of common shares outstanding during that period. Diluted net income per share is calculated giving effect to all dilutive potential common shares that were outstanding during the period. Dilutive potential common shares consist of incremental common shares issuable upon exercise of stock options, upon vesting of restricted stock units, contingent issuable shares for all periods and accrued issuance of shares under employee stock purchase plan.

A reconciliation of the numerator and denominator of basic and diluted net income per share is provided as follows:

	Three Months Ended
	March 31,		March 31,
	2012		2011
	(in thousands, except per share data)
Net income	$	20,387	$	74,553
Weighted-average shares - basic	440,265		456,489
Dilutive effect of incremental shares and share equivalents	4,662		13,533
Weighted-average shares - diluted	444,927		470,022
Net income per share:
Basic
Net income per share - basic	$	0.05	$	0.16
Diluted
Net income per share - diluted	$	0.05	$	0.16

The following table summarizes securities which were not included in the “Weighted-average shares — diluted” used for calculation of diluted net income per share, as their effect would have been anti-dilutive:

	Three Months Ended
	March 31,	March 31,
	2012	2011
	(in thousands)
Employee stock options and restricted stock units outstanding	2,842	1,072