NET INCOME (LOSS) PER SHARE (Tables)

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Reconciliation used in Computing Basic and Diluted Net Income (Loss) per Share

The following is a reconciliation of the numerators and denominators used in computing basic and diluted net loss per share.

(in thousands, except per share amounts)	Three months ended September 30,						Nine months ended September 30,
	2018			2017			2018		2017
Numerator:
Net income (loss)	$	(4,640	)	$	(5,287	)	$	57,485	$	(32,997	)
Denominator:
Shares used in computation of basic net income (loss) per share (weighted average common shares outstanding)	30,780			29,245			30,340		29,155
Dilutive potential common shares:
Stock options, ESPP, restricted stock awards and RSUs	—			—			994		—
Shares used in computation of diluted net income (loss) per share	30,780			29,245			31,334		29,155
Basic net income (loss) per share	$	(0.15	)	$	(0.18	)	$	1.89	$	(1.13	)
Diluted net income (loss) per share	$	(0.15	)	$	(0.18	)	$	1.83	$	(1.13	)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

These outstanding securities consisted of the following:

	September 30,
	2018	2017
Standard and market condition based stock options outstanding	2,322,517	3,815,784
Restricted stock awards outstanding	62,556	44,538
RSUs outstanding	1,090,938	627,454
ESPP	7,529	10,152