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Income Taxes (Tables) | 12 Months Ended
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Sep. 25, 2021
Income Tax Disclosure [Abstract] |
Summary of reconciliation of the expected U.S. federal income tax rate to the effective tax rate | The following is a reconciliation of the expected U.S. Federal income tax rate to the effective tax rate for the year ended September 25, 2021 (dollars in thousands):
|  | Amount |  |  | Percent |
Loss before income tax |  | $ | (122,314 | ) |  |  |  |
Tax on pre-tax loss |  |  | (25,686 | ) |  |  | 21.00 |
Loss not subject to tax |  |  | 26,575 |  |  |  | (21.73 | )
Foreign rate differential |  |  | 233 |  |  |  | (0.19 | )
Decrease in valuation allowance |  |  | (993 | ) |  |  | 0.81 |
Other |  |  | (129 | ) |  |  | 0.11 |
Total income tax |  | $ | — |  |  |  | — |
Summary of the significant components of the company's net deferred tax assets | The following is a summary of the significant components of the Company’s net deferred tax assets as of September 25, 2021 and September 26, 2020 (in thousands):
|  | Year Ended |
|  | September 25, 2021 |  |  | September 26, 2020 |
Deferred tax assets: |  |  |  |  |  |  |  |
Non-capital loss carry-forward |  | $ | 11,265 |  |  | $ | 11,794 |
R&D credits and deductible expenditures |  |  | 1,993 |  |  |  | 1,696 |
Fixed assets |  |  | 37 |  |  |  | — |
Other |  |  | 1 |  |  |  | 1 |
Gross deferred tax assets |  |  | 13,296 |  |  |  | 13,491 |
Deferred tax liabilities: |  |  |  |  |  |  |  |
R&D credits and deductible expenditures |  |  | (688 | ) |  |  | (600 | )
Fixed assets |  |  | — |  |  |  | (17 | )
Gross deferred tax liabilities |  |  | (688 | ) |  |  | (617 | )
Total deferred tax assets and liabilities |  |  | 12,608 |  |  |  | 12,874 |
Valuation allowance |  |  | (12,608 | ) |  |  | (12,874 | )
Net deferred tax assets |  | $ | — |  |  | $ | — |

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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://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=121826272&loc=d3e32537-109319 + Details
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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://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=121826272&loc=d3e32687-109319 + Details
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