XML 80 R34.htm IDEA: XBRL DOCUMENT
v3.21.1

Income Taxes (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Income Tax Disclosure [Abstract] |
Summary of Reconciliation of Expected Income Tax (Benefit) Computed Using Federal Statutory Income Tax Rate to Effective Income Tax Rate | A reconciliation of the expected income tax (benefit) computed using the federal statutory income tax rate to the Company’s effective income tax rate is as follows for the year ended December 31, 2020 and 2019:
|  | December 31, |
|  | 2020 |  |  | 2019 |
Income tax computed at federal statutory rate |  |  | 21 | % |  |  | 21.0 | %
State taxes, net of federal benefit |  |  | 5.7 | % |  |  | 7.0 | %
Change in valuation allowance |  |  | (27.3 | )% |  |  | (31.0 | )%
R&D credit carryovers |  |  | 7.6 | % |  |  | 4.1 | %
Stock-based compensation |  |  | (6.7 | )% |  |  | (0.9 | )%
Permanent differences |  |  | (0.3 | )% |  |  | (0.2 | )%
Total |  |  | 0.0 | % |  |  | 0.0 | %
Summary of Deferred Tax Assets | The Company’s deferred tax assets at December 31, 2020 and 2019, consist of the following:
|  | December 31, |
|  | 2020 |  |  | 2019 |
Deferred tax assets: |  |  |  |  |  |  |  |
Net operating losses |  | $ | 48,832 |  |  | $ | 42,647 |
Tax credit carryforwards |  |  | 10,270 |  |  |  | 6,309 |
Lease liability |  |  | 6,430 |  |  |  | 6,542 |
Intangibles |  |  | 1,469 |  |  |  | 1,498 |
Stock-based compensation |  |  | 4,496 |  |  |  | 534 |
Depreciation and amortization |  |  | 230 |  |  |  | 188 |
Other |  |  | 14 |  |  |  | 13 |
Total gross deferred tax asset |  |  | 71,741 |  |  |  | 57,731 |
Valuation allowance |  |  | (65,813 | ) |  |  | (51,537 | )
Net deferred tax asset |  |  | 5,928 |  |  |  | 6,194 |
Deferred tax liability |  |  |  |  |  |  |  |
Operating lease assets |  |  | (5,928 | ) |  |  | (6,194 | )
Total deferred tax liability |  |  | (5,928 | ) |  |  | (6,194 | )
|  | $ | — |  |  | $ | — |

X
- References No definition available. + Details
Name: | us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
Name: | us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
Name: | us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration