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Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2017

Stock-based Compensation

Summary of stock option activity

		Shares		Weighted average exercise price
Outstanding at January 1, 2017		784,011		$	10.70
Options granted		192,700		15.96
Options exercised		—		—
Options cancelled		—		—
Outstanding at June 30, 2017		976,711		$	11.74
Exercisable at June 30, 2017		153,088		$	13.06

Schedule of stock-based compensation expense

Stock-based compensation expense during the three and six months ended June 30, 2017 and 2016 was as follows (in thousands):

		Three Months Ended June 30,						Six Months Ended June 30,
		2017			2016			2017			2016
Stock-based compensation expense by type of award:
Stock options		$	527		$	—		$	981		$	—
Restricted stock		149			—			297			—
Total stock-based compensation expense		$	676		$	—		$	1,278		$	—
Effect of stock-based compensation expense by line item:
Research and development		$	168		$	—		$	305		$	—
General and administrative		508						973			—
Total stock-based compensation expense included in net loss		$	676		$	—		$	1,278		$	—

Schedule of unrecognized stock-based compensation expense

Unrecognized stock-based compensation expense as of June 30, 2017 was as follows (in thousands):

		Unrecognized stock compensation expense			Weighted average remaining period (in years)
Stock options		$	5,916		2.44
Restricted stock		1,061			1.99
Total		$	6,977		2.38

X

- Definition

Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the income statement for the period. This may include the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits. It includes the reporting line for the costs expensed.

+ References

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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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- Definition

Tabular disclosure of the total compensation cost related to nonvested awards not yet recognized and the weighted-average period over which it is expected to be recognized.

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

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