NET INCOME PER SHARE (Tables)

9 Months Ended

Sep. 30, 2014

Earnings Per Share [Abstract]

Reconciliation of the numerator and denominator of basic and diluted net income per share

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

	Three Months Ended				Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
	(in thousands, except per share data)
Net income (loss)	$	17,250	$	5,426	$	38,652	$	(29,265	)
Weighted-average shares - basic	418,954		426,621		421,791		427,944
Dilutive effect of incremental shares and share equivalents	2,010		3,018		1,909		—
Weighted-average shares - diluted	420,964		429,639		423,700		427,944
Net income (loss) per share:
Basic
Net income (loss) per share - basic	$	0.04	$	0.01	$	0.09	$	(0.07	)
Diluted
Net income (loss) per share - diluted	$	0.04	$	0.01	$	0.09	$	(0.07	)

Anti-dilutive securities not included in the "Weighted-average shares - diluted" used for calculation of diluted net income per share

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

	Three Months Ended		Nine Months Ended
	September 30, 2014	September 30, 2013	September 30, 2014	September 30, 2013
	(in thousands)
Employee stock options and restricted stock units outstanding	4,167	10,219	5,381	15,081