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Marketable Securities | 12 Months Ended
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Dec. 30, 2023
Marketable Securities [Abstract] |
Marketable Securities | 4. Marketable Securities: At December 30, 2023 and December 31, 2022, marketable securities are categorized as follows:
|  | Amortized Cost |  |  | Gross Unrealized Holding Gains |  |  | Gross Unrealized Holding Losses |  |  | Fair Value |
December 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |
Government notes and bonds |  | $ | 195,733 |  |  | $ | 393 |  |  | $ | 326 |  |  | $ | 195,800 |
Certificates of deposit |  |  | 67,377 |  |  |  | 93 |  |  |  | 3 |  |  |  | 67,467 |
Commercial paper |  |  | 99,591 |  |  |  | 54 |  |  |  | 10 |  |  |  | 99,635 |
Corporate bonds |  |  | 101,146 |  |  |  | 391 |  |  |  | 136 |  |  |  | 101,401 |
Total marketable securities |  | $ | 463,847 |  |  | $ | 931 |  |  | $ | 475 |  |  | $ | 464,303 |
December 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |
Government notes and bonds |  | $ | 181,196 |  |  | $ | 27 |  |  | $ | 2,355 |  |  | $ | 178,868 |
Asset-backed securities |  |  | 1,555 |  |  |  | — |  |  |  | 21 |  |  |  | 1,534 |
Certificates of deposit |  |  | 52,190 |  |  |  | 24 |  |  |  | 118 |  |  |  | 52,095 |
Commercial paper |  |  | 80,199 |  |  |  | 16 |  |  |  | 136 |  |  |  | 80,079 |
Corporate bonds |  |  | 60,334 |  |  |  | 4 |  |  |  | 1,003 |  |  |  | 59,335 |
Total marketable securities |  | $ | 375,474 |  |  | $ | 71 |  |  | $ | 3,633 |  |  | $ | 371,912 |
The amortized cost and estimated fair value of marketable securities classified by the maturity date listed on the security, regardless of the Consolidated Balance Sheet classification, is as follows at December 30, 2023 and December 31, 2022:
|  | December 30, 2023 |  |  | December 31, 2022 |
|  | Amortized Cost |  |  | Fair Value |  |  | Amortized Cost |  |  | Fair Value |
Due within one year |  | $ | 331,136 |  |  | $ | 330,937 |  |  | $ | 311,934 |  |  | $ | 309,385 |
Due after one through five years |  |  | 132,711 |  |  |  | 133,366 |  |  |  | 63,540 |  |  |  | 62,527 |
Due after five through ten years |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Due after ten years |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Total marketable securities |  | $ | 463,847 |  |  | $ | 464,303 |  |  | $ | 375,474 |  |  | $ | 371,912 |
The following table summarizes the estimated fair value and gross unrealized holding losses of marketable securities, aggregated by investment instrument and period of time in an unrealized loss position, at December 30, 2023 and December 31, 2022.
|  | In Unrealized Loss Position For Less Than 12 Months |  |  | In Unrealized Loss Position For Greater Than 12 Months |
|  | Fair Value |  |  | Gross Unrealized Losses |  |  | Fair Value |  |  | Gross Unrealized Losses |
December 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |
Government notes and bonds |  | $ | 82,776 |  |  | $ | 325 |  |  | $ | 180 |  |  | $ | 1 |
Certificates of deposit |  |  | 11,839 |  |  |  | 3 |  |  |  | — |  |  |  | — |
Commercial paper |  |  | 20,121 |  |  |  | 10 |  |  |  | — |  |  |  | — |
Corporate bonds |  |  | 20,268 |  |  |  | 103 |  |  |  | 5,999 |  |  |  | 33 |
Total marketable securities |  | $ | 135,004 |  |  | $ | 441 |  |  | $ | 6,179 |  |  | $ | 34 |
December 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |
Government notes and bonds |  | $ | 96,301 |  |  | $ | 1,273 |  |  | $ | 69,159 |  |  | $ | 1,082 |
Asset-backed securities |  |  | 1,555 |  |  |  | 21 |  |  |  | — |  |  |  | — |
Certificates of deposit |  |  | 22,400 |  |  |  | 118 |  |  |  | — |  |  |  | — |
Commercial paper |  |  | 50,550 |  |  |  | 136 |  |  |  | — |  |  |  | — |
Corporate bonds |  |  | 28,975 |  |  |  | 637 |  |  |  | 28,769 |  |  |  | 366 |
Total marketable securities |  | $ | 199,781 |  |  | $ | 2,185 |  |  | $ | 97,928 |  |  | $ | 1,448 |
See Note 3 for additional discussion regarding the fair value of the Company’s marketable securities.

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