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Marketable Securities (Tables) | 12 Months Ended
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Dec. 30, 2023
Investments, Debt and Equity Securities [Abstract] |
Schedule of Marketable Securities Classified as Available-for-sale Securities | Marketable securities classified as available-for-sale securities are summarized below:
|  |  |  | Available-For-Sale Securities as of December 30, 2023 |
|  | Fair Value Level |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
U.S. Treasury securities |  | Level 2 |  | $ | 2,971 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 2,972 |
Agency securities |  | Level 2 |  |  | 23,692 |  |  |  | 32 |  |  |  | (585 | ) |  |  | 23,139 |
Mortgage-backed securities |  | Level 2 |  |  | 38,743 |  |  |  | — |  |  |  | (4,731 | ) |  |  | 34,012 |
Corporate debt securities |  | Level 2 |  |  | 1,104,834 |  |  |  | 1,680 |  |  |  | (46,073 | ) |  |  | 1,060,441 |
Municipal securities |  | Level 2 |  |  | 294,240 |  |  |  | 98 |  |  |  | (18,430 | ) |  |  | 275,908 |
Other |  | Level 2 |  |  | 3,760 |  |  |  | — |  |  |  | (423 | ) |  |  | 3,337 |
Total |  |  |  | $ | 1,468,240 |  |  | $ | 1,811 |  |  | $ | (70,242 | ) |  | $ | 1,399,809 |
|  |  |  | Available-For-Sale Securities as of December 31, 2022 |
|  | Fair Value Level |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
U.S. Treasury securities |  | Level 2 |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Agency securities |  | Level 2 |  |  | 7,000 |  |  |  | — |  |  |  | (786 | ) |  |  | 6,214 |
Mortgage-backed securities |  | Level 2 |  |  | 45,373 |  |  |  | — |  |  |  | (4,525 | ) |  |  | 40,848 |
Corporate debt securities |  | Level 2 |  |  | 1,106,688 |  |  |  | 188 |  |  |  | (77,802 | ) |  |  | 1,029,074 |
Municipal securities |  | Level 2 |  |  | 326,058 |  |  |  | 3 |  |  |  | (28,861 | ) |  |  | 297,200 |
Other |  | Level 2 |  |  | 10,466 |  |  |  | — |  |  |  | (2,154 | ) |  |  | 8,312 |
Total |  |  |  | $ | 1,495,585 |  |  | $ | 191 |  |  | $ | (114,128 | ) |  | $ | 1,381,648 |
Schedule of Gross Unrealized Losses and Fair Value by Major Security Type | The following tables display additional information regarding gross unrealized losses and fair value by major security type for available-for-sale securities in an unrealized loss position as of December 30, 2023 and December 31, 2022.
|  | As of December 30, 2023 |
|  | Less than 12 Consecutive Months |  |  | 12 Consecutive Months or Longer |  |  | Total |
|  | Gross Unrealized Losses |  |  | Fair Value |  |  | Gross Unrealized Losses |  |  | Fair Value |  |  | Gross Unrealized Losses |  |  | Fair Value |
U.S. Treasury securities |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Agency securities |  |  | (31 | ) |  |  | 10,923 |  |  |  | (554 | ) |  |  | 6,446 |  |  |  | (585 | ) |  |  | 17,369 |
Mortgage-backed securities |  |  | — |  |  |  | — |  |  |  | (4,731 | ) |  |  | 34,012 |  |  |  | (4,731 | ) |  |  | 34,012 |
Corporate debt securities |  |  | (702 | ) |  |  | 64,637 |  |  |  | (45,371 | ) |  |  | 889,785 |  |  |  | (46,073 | ) |  |  | 954,422 |
Municipal securities |  |  | (32 | ) |  |  | 2,654 |  |  |  | (18,398 | ) |  |  | 261,651 |  |  |  | (18,430 | ) |  |  | 264,305 |
Other |  |  | — |  |  |  | — |  |  |  | (423 | ) |  |  | 3,337 |  |  |  | (423 | ) |  |  | 3,337 |
Total |  | $ | (765 | ) |  | $ | 78,214 |  |  | $ | (69,477 | ) |  | $ | 1,195,231 |  |  | $ | (70,242 | ) |  | $ | 1,273,445 |
|  | As of December 31, 2022 |
|  | Less than 12 Consecutive Months |  |  | 12 Consecutive Months or Longer |  |  | Total |
|  | Gross Unrealized Losses |  |  | Fair Value |  |  | Gross Unrealized Losses |  |  | Fair Value |  |  | Gross Unrealized Losses |  |  | Fair Value |
U.S. Treasury securities |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Agency securities |  |  | — |  |  |  | — |  |  |  | (786 | ) |  |  | 6,214 |  |  |  | (786 | ) |  |  | 6,214 |
Mortgage-backed securities |  |  | (1,900 | ) |  |  | 23,229 |  |  |  | (2,625 | ) |  |  | 17,619 |  |  |  | (4,525 | ) |  |  | 40,848 |
Corporate debt securities |  |  | (26,680 | ) |  |  | 508,956 |  |  |  | (51,122 | ) |  |  | 498,834 |  |  |  | (77,802 | ) |  |  | 1,007,790 |
Municipal securities |  |  | (2,136 | ) |  |  | 69,017 |  |  |  | (26,725 | ) |  |  | 225,679 |  |  |  | (28,861 | ) |  |  | 294,696 |
Other |  |  | — |  |  |  | — |  |  |  | (2,154 | ) |  |  | 8,067 |  |  |  | (2,154 | ) |  |  | 8,067 |
Total |  | $ | (30,716 | ) |  | $ | 601,202 |  |  | $ | (83,412 | ) |  | $ | 756,413 |  |  | $ | (114,128 | ) |  | $ | 1,357,615 |
Schedule of Amortized Cost and Estimated Fair Value of Marketable Securities by Maturity | The amortized cost and fair value of marketable securities at December 30, 2023, by maturity, are shown below.
|  | Amortized Cost |  |  | Fair Value |
Due in one year or less |  | $ | 279,137 |  |  | $ | 274,618 |
Due after one year through five years |  |  | 1,170,760 |  |  |  | 1,109,093 |
Due after five years through ten years |  |  | 10,067 |  |  |  | 9,187 |
Due after ten years |  |  | 8,276 |  |  |  | 6,911 |
Total |  | $ | 1,468,240 |  |  | $ | 1,399,809 |

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