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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Taxes

Schedule of components of loss before income tax

The components of loss before income tax is as follows (in thousands):

		2016			2015			2014
Domestic		$	(11,375	)	$	(31,335	)	$	(161	)
Foreign			(25,000	)		—			—
​	​	​	​	​	​	​	​	​	​	​
		$	(36,375	)	$	(31,335	)	$	(161	)
​	​	​	​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​	​	​	​

Schedule of reconciliation of the effective tax rate to the U.S. Federal statutory rate

		December 31, 2016			December 31, 2015			December 31, 2014
Federal tax benefit at statutory rate			34	%		34	%		34	%
State tax, net of Federal benefit			8			3			6
Loss due to change in fair value of convertible preferred stock liability			—			(19	)		—
Foreign rate differential			(23	)		—			—
Change in valuation allowance			(19	)		(18	)		(40	)
​	​	​	​	​	​	​	​	​	​	​
Effective income tax rate			0	%		0	%		0	%
​	​	​	​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​	​	​	​

Schedule of principal components of the net deferred tax assets

The principal components of the Company's net deferred tax assets are as follows (in thousands)

		December 31, 2016			December 31, 2015
Net operating loss carryforwards		$	9,339		$	4,671
Tax credit carryforwards			1,960			445
Capitalized tax assets			241			528
Accruals			230			108
Stock compensation			954			43
Other			67			71
​	​	​	​	​	​	​	​
Total deferred tax assets			12,791			5,866
Valuation allowance			(12,791	)		(5,866	)
​	​	​	​	​	​	​	​
Net deferred tax assets		$	—		$	—
​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​

Schedule of unrecognized tax benefits activity

		December 31, 2016			December 31, 2015			December 31, 2014
Unrecognized tax benefits beginning of the period		$	135		$	—		$	—
Increase related to the prior year			6			—			—
Increased related to the current year			463			135			—
​	​	​	​	​	​	​	​	​	​	​
Unrecognized tax benefits, end of the period		$	604		$	135		$	—
​	​	​	​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​	​	​	​

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Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
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Tabular disclosure of income before income tax between domestic and foreign jurisdictions.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
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Tabular disclosure of the change in unrecognized tax benefits.

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-Publisher FASB
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-Topic 740
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=75116239&loc=d3e36027-109320

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