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NET INCOME (LOSS) PER SHARE (Tables)

6 Months Ended

Jun. 30, 2018

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 and six months ended June 30, 2018 and 2017 (in thousands, except per share amounts):

	Three Months Ended   June 30,								Six Months Ended   June 30,
	2018				2017				2018				2017
Numerator:
Net income (loss)	$	2,564			$	(19,743	)		$	(8,116	)		$	(39,609	)
Denominator:
Weighted average common shares outstanding	40,796				40,160				40,751				39,079
Computation of diluted securities:
Dilutive effect of stock options	807				—				—				—
Dilutive effect of RSUs	87				—				—				—
Dilutive effect of ESPP purchase options	4				—				—				—
Weighted average common shares outstanding—diluted	41,694				40,160				40,751				39,079
Net loss per share:
Basic and diluted net income (loss) per common share	$	0.06			$	(0.49	)		$	(0.20	)		$	(1.01	)

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

The following outstanding stock options, RSUs, conversion premiums on the Company’s convertible senior notes and ESPP purchase options are antidilutive in the periods presented (in thousands):

	Three Months Ended   June 30,						Six Months Ended   June 30,
	2018			2017			2018			2017
Weighted average number of stock options	3,918			5,092			5,094			5,102
Weighted average number of RSUs	367			375			483			364
Conversion premium on the 2019 Notes	—			9			—			817
Weighted average ESPP purchase options	5			36			33			37
Total	4,290			5,512			5,610			6,320

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- References

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- Definition

Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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