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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Taxes

Schedule of statutory federal income tax rate to the provision (benefit)

		For the Year Ended December 31,
		2016			2015			2014
Income tax (benefit) provision at federal statutory rate		(34.0)	%		(34.0)	%		(34.0)	%
Valuation allowance		40.2			38.2			36.8
State income tax, net of federal benefit		(4.7)			(4.0)			(4.0)
Convertible notes		1.1			0.6			1.2
Research credits		(4.0)
Other		1.4			(0.8)			—
Effective tax rate		—	%		—	%		—	%

Schedule of deferred tax assets and liabilities

Significant components of the Company’s deferred tax assets and liabilities are summarized in the tables below as of (in thousands):

		Year Ended December 31,
Deferred tax assets:		2016			2015
Federal and state operating loss carryforwards		$	2,289		$	2,723
Research and development costs deferral election			5,254			—
Acquired intangibles			351			345
Accruals			13			—
Convertible notes			—			460
Charitable contributions			12			4
Stock-based compensation			633			41
Research and development credit carryforwards			768			95
			9,320			3,668
Valuation allowance			(9,320)			(3,657)
Total deferred tax assets, net of valuation allowance			—			11
Deferred tax liabilities:
Restricted stock awards			—			(11)
Total deferred tax liabilities			—			(11)
Net deferred tax assets		$	—		$	—

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- References

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- Definition

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319

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- Definition

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32687-109319

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