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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Components of Loss Before Income Taxes

he components of loss before income taxes were as follows:

		As of December 31,
		2016				2015
		(in thousands)
U.S.		$	(15,838	)		$	(31,382	)
Foreign			(369	)			(691	)
Total		$	(16,208	)		$	(32,073	)

Schedule of Reconciliation of Income Tax Expense (Benefit) Computed at Statutory Federal Income Tax Rate

A reconciliation of income tax expense (benefit) computed at the statutory federal income tax rate to income taxes as reflected in the financial statements is as follows:

		As of December 31,
		2016				2015
Federal income tax (benefit) at statutory rate			34.0	%			34.0	%
(Increase) decrease income tax benefit resulting from:
Permanent differences			29.0				(1.2	)
Net Operating Loss Limitation			(111.1	)			—
R&D Credit Limitation			(1.5	)			—
Change in valuation allowance			48.7				(31.7	)
Other			0.9				(1.2	)
Income tax expense (benefit)			0.0	%			0.0	%

Components of Deferred Tax Assets and Liabilities

Deferred taxes are recognized for temporary differences between the basis of assets and liabilities for financial statement and income tax purposes. The significant components of the Company’s deferred tax assets and liabilities are comprised of the following:

		As of December 31,
		2016				2015
Deferred tax assets:
Net operating loss carryforwards		$	16,146			$	28,200
Depreciation and amortization			6,229				6,688
Accrued expenses			2,082				1,183
Capitalized start-up costs			10,037				8,531
Other			75				259
Deferred tax assets before valuation allowance			34,569				44,861
Valuation allowance			(34,569	)			(43,751	)
			—				1,110
Deferred tax liabilities
IPR&D			—				(36	)
Change in accounting method			—				(1,074	)
			—				(1,110	)
Net deferred tax assets		$	—			$	—

Summary of Changes In Unrecognized Tax Benefits

The changes in the Company’s unrecognized tax benefits are summarized as follows:

		As of December 31,
		2016				2015
		(in thousands)
Unrecognized tax benefit, beginning of year		$	687			$	811
Increase (decrease) related to current year positions			(125	)			(124	)
Settlements			—				—
Unrecognized tax benefit, end of year		$	562			$	687

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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

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

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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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
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1)(i))
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Tabular disclosure of the change in unrecognized tax benefits.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 55
-Paragraph 217
-URI http://asc.fasb.org/extlink&oid=75116239&loc=d3e36027-109320

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