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Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Sep. 27, 2019
Equity [Abstract] |
Summary of Accumulated Other Comprehensive Income, Net of Income Taxes | The components of accumulated other comprehensive income (loss), net of income taxes, are as follows:
| Foreign Currency Items |  | Other Items |  | Total
Balance - September 29, 2017 | $ | 3,139 |  |  | $ | (162 | ) |  | $ | 2,977 |
Foreign currency translation loss, net of tax | (502 | ) |  | — |  |  | (502 | )
Unrealized loss on short-term investments, net of tax | — |  |  | (287 | ) |  | (287 | )
Balance - September 28, 2018 | 2,637 |  |  | (449 | ) |  | 2,188 |
Foreign currency translation gain, net of tax | 1,693 |  |  | — |  |  | 1,693 |
Unrealized gain on short-term investments, net of tax | — |  |  | 477 |  |  | 477 |
Balance at September 27, 2019 | $ | 4,330 |  |  | $ | 28 |  |  | $ | 4,358 |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 + Details
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