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Investments Available for Sale (Tables) | 12 Months Ended
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Dec. 27, 2024
Investments, Debt and Equity Securities [Abstract] |
Summary of Investments Available for Sale and Related Fair Value Measurement | During 2022, the Company started to invest its cash in investments AFS, in accordance with its investment policy. Investments AFS and the related fair value measurement consisted of the following (dollars in thousands):
|  | December 27, 2024 |
|  |  |  |  |  |  |  |  |  |  |  |  |  | Fair Value Measurements |
|  | Amortized Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Estimated Fair Value |  |  | Level 1 |  |  | Level 2 |
Commercial paper |  | $ | 21,466 |  |  | $ | 4 |  |  | $ | (2 | ) |  | $ | 21,468 |  |  | $ | — |  |  | $ | 21,468 |
Certificates of deposit |  |  | 1,997 |  |  |  | — |  |  |  | — |  |  |  | 1,997 |  |  |  | — |  |  |  | 1,997 |
U.S. Treasury securities |  |  | 11,356 |  |  |  | 3 |  |  |  | (4 | ) |  |  | 11,355 |  |  |  | 11,355 |  |  |  | — |
Corporate debt securities |  |  | 51,527 |  |  |  | 14 |  |  |  | (26 | ) |  |  | 51,515 |  |  |  | — |  |  |  | 51,515 |
Total investments AFS |  | $ | 86,346 |  |  | $ | 21 |  |  | $ | (32 | ) |  | $ | 86,335 |  |  | $ | 11,355 |  |  | $ | 74,980 |
|  | December 29, 2023 |
|  |  |  |  |  |  |  |  |  |  |  |  |  | Fair Value Measurements |
|  | Amortized Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Estimated Fair Value |  |  | Level 1 |  |  | Level 2 |
Commercial paper |  | $ | 7,720 |  |  | $ | 9 |  |  | $ | — |  |  | $ | 7,729 |  |  | $ | — |  |  | $ | 7,729 |
Certificates of deposit |  |  | 3,716 |  |  |  | 4 |  |  |  | — |  |  |  | 3,720 |  |  |  | — |  |  |  | 3,720 |
U.S. Treasury securities |  |  | 23,036 |  |  |  | 3 |  |  |  | (56 | ) |  |  | 22,983 |  |  |  | 22,983 |  |  |  | — |
U.S. agency securities |  |  | 3,423 |  |  |  | — |  |  |  | (4 | ) |  |  | 3,419 |  |  |  | — |  |  |  | 3,419 |
Corporate debt securities |  |  | 11,538 |  |  |  | 12 |  |  |  | (10 | ) |  |  | 11,540 |  |  |  | — |  |  |  | 11,540 |
Total investments AFS |  | $ | 49,433 |  |  | $ | 28 |  |  | $ | (70 | ) |  | $ | 49,391 |  |  | $ | 22,983 |  |  | $ | 26,408 |
Summary of Fair Value of Investments Available for Sale by Contractual Maturity | The following table shows the fair value of investments AFS by contractual maturity (dollars in thousands):
|  | As of December 27, 2024 |
|  | Within one year |  |  | After one year through five years |  |  | Total |
Commercial paper |  | $ | 21,468 |  |  | $ | — |  |  | $ | 21,468 |
Certificates of deposit |  |  | 1,997 |  |  |  | — |  |  |  | 1,997 |
U.S. Treasury securities |  |  | 11,355 |  |  |  | — |  |  |  | 11,355 |
Corporate debt securities |  |  | 51,515 |  |  |  | — |  |  |  | 51,515 |
Total investments AFS |  | $ | 86,335 |  |  | $ | — |  |  | $ | 86,335 |

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