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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Summary of Loss Before Income Taxes

Loss before income taxes are as follows (in thousands):

		Year Ended December 31,
		2020				2019
Losses before income taxes:
U.S.		$	(23,408	)		$	(16,174	)
Non-U.S.			193				163
Total		$	(23,215	)		$	(16,011	)

Summary of Provision (Benefit) for Income Taxes

The provision (benefit) for income taxes are as follows (in thousands):

		Year Ended December 31,
		2020				2019
Current:
Federal		$	—			$	—
State			—				—
Foreign			—				—
			—				—
Deferred:
Federal			(404	)			—
State			—				—
Foreign			—				—
			(404	)			—
Provision (benefit) for income taxes		$	(404	)		$	—

Reconciliation of U.S. Federal Statutory Income Tax Rate

A reconciliation of the U.S. federal statutory income tax rate to the Company’s effective income tax rate is as follows:

		Year Ended December 31,
		2020				2019
Statutory Federal income tax rate		$	(4,875	)		$	(3,362	)
Tax credits			(215	)			(207	)
Change in warrant fair market value			1,014				—
Stock-based compensation			252				141
Goodwill impairment			—				392
Permanent items			627				4
Section 382 limitation on net operating losses and credits			10,562				—
Other			89				38
Change in valuation allowance			(7,858	)			2,994
Total provision (benefit) for income taxes		$	(404	)		$	—

Schedule of Significant Components Deferred Tax Assets and Liabilities

Significant components of the Company’s deferred tax assets and liabilities as of December 31, 2020 and 2019 consisted of the following (in thousands):

		Year Ended December 31,
		2020				2019
Net operating loss carryforwards		$	5,151			$	9,947
Research and development tax credits			705				506
Accruals and reserves			14				43
Stock compensation			802				391
Depreciation and amortization			1,905				116
Lease liability			30				68
Total deferred tax assets			8,607				11,071
Right-of-use asset			(29	)			(66	)
Acquired IPR&D			(6,801	)			—
Total deferred tax liabilities			(6,830	)			(66	)
Less: valuation allowance			(5,883	)			(11,005	)
Net deferred tax liabilities		$	(4,106	)		$	—

Reconciliation of Beginning and Ending Amounts of Unrecognized Tax Benefits

The following table reconciles the beginning and ending amounts of unrecognized tax benefits for the years presented (in thousands):

		Year Ended December 31,
		2020				2019
Gross unrecognized tax benefits at the beginning of the year		$	548			$	328
Additions from tax positions taken in the current year			233				214
Additions from tax positions taken in prior years			531				6
Reductions from tax positions taken in prior years			(548	)			—
Tax settlements			—				—
Gross unrecognized tax benefits at the end of the year		$	764			$	548

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Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

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