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Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Summary of Product Revenue by Geographical Locations of Customers

Product revenue by geographical locations of customers during the three and six months ended June 30, 2018 and 2017, were as follows (in thousands):

		Three Months Ended								Six Months Ended
		June 30,								June 30,
		2018				2017				2018				2017
Product revenue:
North America		$	3,149			$	1,425			$	5,536			$	2,348
Europe, Middle East and Africa			12,018				7,836				23,024				13,748
Other			253				264				424				435
Total product revenue		$	15,420			$	9,525			$	28,984			$	16,531

Anti-Dilutive Effect of Common Shares

The table below presents potential shares that were excluded from the calculation of the weighted average number of shares outstanding used for the calculation of diluted net loss per share. These are excluded from the calculation due to their anti-dilutive effect for the three and six months ended June 30, 2018 and 2017 (shares in thousands):

		Three Months Ended								Six Months Ended
		June 30,								June 30,
		2018				2017				2018				2017
Weighted average number of anti-dilutive potential shares:
Stock options			18,631				17,966				18,259				17,321
Restricted stock units			2,024				1,350				1,803				1,159
Employee stock purchase plan rights			171				43				157				75
Total			20,826				19,359				20,219				18,555

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- References

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- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045

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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://fasb.org/us-gaap/role/ref/legacyRef
-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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