NET INCOME (LOSS) PER SHARE (Tables)

3 Months Ended

Mar. 31, 2016

Earnings Per Share [Abstract]

Schedule of computation of basic and diluted loss per share

The following table sets forth the computation of basic and diluted net income (loss) per share for the three months ended March 31, 2016 and 2015 (in thousands, except per share amounts):

	Three Months Ended
	March 31,
	2016			2015
Numerator:
Net income (loss)	$	(3,854	)	$	1,260
Denominator:
Weighted average shares of common stock outstanding—basic	37,020			36,235
Computation of diluted securities:
Dilutive effect of stock options	—			1,885
Dilutive effect of conversion premium on the Notes	—			3,652
Dilutive effect of warrants	—			6
Dilutive effect of ESPP	—			1
Weighted average shares of common stock outstanding—diluted	37,020			41,779
Net income (loss) per share:
Basic and diluted net income (loss) per share of common stock	$	(0.10	)	$	0.03

Schedule of potential dilutive effect of the securities excluded from the calculation of diluted loss per share

The following outstanding stock options, RSUs, conversion premium on the Notes, warrants and ESPP purchase options are antidilutive in the periods presented (in thousands):

	Three Months Ended
	March 31,
	2016	2015
Weighted average number of stock options	4,324	1,323
Weighted average number of RSUs	205	—
Conversion premium on the Notes	2,749	—
Weighted average number of warrants	3	—
Weighted average purchase options under ESPP	23	—
Total	7,304	1,323