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Stock Incentive Plans (Tables)

9 Months Ended

Sep. 30, 2015

Text Block [Abstract]

Schedule of Stock Option Activity

The following table summarizes stock option activity during the nine months ended September 30, 2015:

	Number of Shares				Weighted Average Exercise Price				Weighted Average Remaining Contractual Life in Years				Total Aggregate Intrinsic Value
Outstanding at December 31, 2014		709,136			$	2.29				9.73			$	2,522
Options granted		849,791				8.22
Options exercised		(47,648	)			2.44
Options canceled		(103,813	)			2.58
Outstanding at September 30, 2015		1,407,466				5.85				9.04				9,898
Vested and expected to vest at September 30, 2015		1,407,466				5.85				9.04				9,898
Vested at September 30, 2015		417,594				4.06				8.46				3,649
Exercisable at September 30, 2015		1,116,205			$	5.11				8.99			$	8,522

Summary of Stock-based compensation expense recognized for restricted shares stock options and ESPP

Stock-based compensation expense recognized for restricted shares, stock options, and the ESPP has been reported in the statements of operations as follows (in thousands):

	Three months ended September 30,								Nine months ended September 30,
	2015				2014				2015				2014
Research and development	$	324			$	17			$	1,260			$	21
General and administrative		442				32				985				36
Total	$	766			$	49			$	2,245			$	57

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- Definition

Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 718



-SubTopic 10



-Section 50



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-Name Accounting Standards Codification



-Topic 718



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-Section S99



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-Publisher SEC



-Name Staff Accounting Bulletin (SAB)



-Number Topic 14



-Section F

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- Definition

Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 718



-SubTopic 10



-Section 50



-Paragraph 2



-Subparagraph (c)(1)



-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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