v3.8.0.1

Net Loss per Share (Tables)

12 Months Ended

Dec. 31, 2017

Net Loss per Share

Schedule of potential dilutive securities that would have been anti-dilutive due to net loss

		Year Ended December 31,
		2017			2016			2015
Stock options			4,559,176			4,882,237			5,298,510
Restricted stock units			1,413,423			1,412,934			1,220,008

Schedule of calculation of basic and diluted net loss per share

		Year Ended December 31,
		2017			2016			2015
Numerator (in thousands):
Net loss		$	(29,423	)	$	(20,684	)	$	(26,733	)
​	​	​	​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​	​	​	​
Denominator:
Weighted-average shares of common stock outstanding, basic and diluted			49,062,611			46,609,751			42,420,356
​	​	​	​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​	​	​	​
Net loss per share, basic and diluted		$	(0.60	)	$	(0.44	)	$	(0.63	)
​	​	​	​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​	​	​	​

X

- References

No definition available.

+ Details

Name:	us-gaap_EarningsPerShareAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- 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

+ Details

Name:	us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- 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

+ Details

Name:	us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration