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Investments (Tables) | 12 Months Ended
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Dec. 30, 2023
Amortized Cost and Fair Value of Available-for-Sale Investments | The amortized cost and fair values of available-for-sale investments are as follows at December 30, 2023 and December 31, 2022 (in thousands):
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
December 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market investments |  | $ | 16,832 |  |  | $ | — |  |  | $ | — |  |  | $ | 16,832 |
Asset-backed securities |  |  | 16,543 |  |  |  | — |  |  |  | 2,236 |  |  |  | 14,307 |
Corporate bonds and direct obligations of government agencies |  |  | 118,481 |  |  |  | 279 |  |  |  | 4,384 |  |  |  | 114,376 |
U.S. Treasury obligations |  |  | 6,287 |  |  |  | 2 |  |  |  | 43 |  |  |  | 6,246 |
Total |  | $ | 158,143 |  |  | $ | 281 |  |  | $ | 6,663 |  |  | $ | 151,761 |
December 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market investments |  | $ | 21,910 |  |  | $ | — |  |  | $ | — |  |  | $ | 21,910 |
Asset-backed securities |  |  | 18,905 |  |  |  | — |  |  |  | 2,889 |  |  |  | 16,016 |
Corporate bonds and direct obligations of government agencies |  |  | 126,134 |  |  |  | 1 |  |  |  | 7,775 |  |  |  | 118,360 |
U.S. Treasury obligations |  |  | 2,344 |  |  |  | — |  |  |  | 100 |  |  |  | 2,244 |
Total |  | $ | 169,293 |  |  | $ | 1 |  |  | $ | 10,764 |  |  | $ | 158,530 |
Schedule of Unrealized Loss on Available-for-Sale Investments | For those available-for-sale investments with unrealized losses at December 30, 2023 and December 31, 2022, the following table summarizes the duration of the unrealized loss (in thousands):
|  | Less than 12 months |  |  | 12 months or longer |  |  | Total |
|  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |
December 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset-backed securities |  | $ | — |  |  | $ | — |  |  | $ | 14,307 |  |  | $ | 2,236 |  |  | $ | 14,307 |  |  | $ | 2,236 |
Corporate bonds and direct obligations of government agencies |  |  | 3,506 |  |  |  | 42 |  |  |  | 86,841 |  |  |  | 4,342 |  |  |  | 90,347 |  |  |  | 4,384 |
U.S. Treasury obligations |  |  | — |  |  |  | — |  |  |  | 2,305 |  |  |  | 43 |  |  |  | 2,305 |  |  |  | 43 |
Total |  | $ | 3,506 |  |  | $ | 42 |  |  | $ | 103,453 |  |  | $ | 6,621 |  |  | $ | 106,959 |  |  | $ | 6,663 |
December 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset-backed securities |  | $ | — |  |  | $ | — |  |  | $ | 16,016 |  |  | $ | 2,889 |  |  | $ | 16,016 |  |  | $ | 2,889 |
Corporate bonds and direct obligations of government agencies |  |  | 54,031 |  |  |  | 1,516 |  |  |  | 62,390 |  |  |  | 6,259 |  |  |  | 116,421 |  |  |  | 7,775 |
U.S. Treasury obligations |  |  | 2,244 |  |  |  | 100 |  |  |  | — |  |  |  | — |  |  |  | 2,244 |  |  |  | 100 |
Total |  | $ | 56,275 |  |  | $ | 1,616 |  |  | $ | 78,406 |  |  | $ | 9,148 |  |  | $ | 134,681 |  |  | $ | 10,764 |

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- Definition Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value. + References No definition available. + Details
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- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-6 + Details
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