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NET INCOME (LOSS) PER SHARE (Details 2) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
EARNINGS PER SHARE
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	5,512	6,836	6,320	7,070
Employee Stock Option
EARNINGS PER SHARE
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	5,092	4,254	5,102	4,288
Restricted Stock Units (RSUs)
EARNINGS PER SHARE
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	375	218	364	212
Conversion premium on the Notes
EARNINGS PER SHARE
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	9	2,364	817	2,557
Warrants
EARNINGS PER SHARE
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	0	0	1
Employee Stock
EARNINGS PER SHARE
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	36	0	37	12

X

- Definition

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

+ 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

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+ References

No definition available.

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