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Balance Sheet Components (Tables) | 12 Months Ended
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Dec. 30, 2023
Balance Sheet Components [Abstract] |
Schedule of Marketable Securities | Marketable securities consisted of the following (in thousands):
December 30, 2023 | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
U.S. treasuries | $ | 45,772 |  |  | $ | 91 |  |  | $ | (26) |  |  | $ | 45,837 |
Commercial paper | 13,319 |  |  | — |  |  | (2) |  |  | 13,317 |
Corporate bonds | 81,612 |  |  | 267 |  |  | (529) |  |  | 81,350 |
U.S. agency securities | 10,086 |  |  | 9 |  |  | (92) |  |  | 10,003 |
| $ | 150,789 |  |  | $ | 367 |  |  | $ | (649) |  |  | $ | 150,507 |
December 31, 2022 | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
U.S. treasuries | $ | 25,498 |  |  | $ | — |  |  | $ | (479) |  |  | $ | 25,019 |
Commercial paper | 24,893 |  |  | — |  |  | (53) |  |  | 24,840 |
Corporate bonds | 68,845 |  |  | — |  |  | (1,449) |  |  | 67,396 |
Certificates of deposit | 720 |  |  | — |  |  | (14) |  |  | 706 |
U.S. agency securities | 11,295 |  |  | — |  |  | (250) |  |  | 11,045 |
| $ | 131,251 |  |  | $ | — |  |  | $ | (2,245) |  |  | $ | 129,006 |
Contractual Maturity of Marketable Securities | The contractual maturities of marketable securities were as follows (in thousands):
| December 30, 2023 |  | December 31, 2022
| Amortized Cost |  | Fair Value |  | Amortized Cost |  | Fair Value
Due in one year or less | $ | 94,772 |  |  | $ | 94,370 |  |  | $ | 77,663 |  |  | $ | 76,902 |
Due after one year to five years | 56,017 |  |  | 56,137 |  |  | 53,588 |  |  | 52,104 |
| $ | 150,789 |  |  | $ | 150,507 |  |  | $ | 131,251 |  |  | $ | 129,006 |
Schedule of Net Inventory | Inventories consisted of the following (in thousands):
| December 30, 2023 |  | December 31, 2022
Raw materials | $ | 50,808 |  |  | $ | 55,726 |
Work-in-progress | 39,336 |  |  | 46,067 |
Finished goods | 21,541 |  |  | 21,364 |
| $ | 111,685 |  |  | $ | 123,157 |
Schedule of Property, Plant and Equipment | Property, plant and equipment, net consisted of the following (in thousands):
| December 30, 2023 |  | December 31, 2022
Land | $ | 17,124 |  |  | $ | 17,136 |
Building and building improvements | 46,526 |  |  | 44,932 |
Machinery and equipment | 286,215 |  |  | 276,180 |
Computer equipment and software | 46,866 |  |  | 45,813 |
Furniture and fixtures | 7,490 |  |  | 7,540 |
Leasehold improvements | 91,063 |  |  | 86,500 |
Sub-total | 495,284 |  |  | 478,101 |
Less: Accumulated depreciation and amortization | (358,021) |  |  | (335,711) |
Net property, plant and equipment | 137,263 |  |  | 142,390 |
Construction-in-progress | 67,136 |  |  | 47,458 |
Total | $ | 204,399 |  |  | $ | 189,848 |
Schedule of Accrued Liabilities | Accrued liabilities consisted of the following (in thousands):
| December 30, 2023 |  | December 31, 2022
Accrued compensation and benefits | $ | 20,073 |  |  | $ | 15,864 |
Accrued income and other taxes | 8,205 |  |  | 12,817 |
Accrued employee stock purchase plan contributions withheld | 4,263 |  |  | 4,585 |
Accrued warranty | 3,177 |  |  | 4,199 |
Accrued restructuring charges | — |  |  | 1,249 |
Other accrued expenses | 5,319 |  |  | 3,401 |
| $ | 41,037 |  |  | $ | 42,115 |

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