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Selected Financial Statement Data (Tables) | 12 Months Ended
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Apr. 26, 2025
Inventory Disclosure [Abstract] |
Schedule of inventory, current | Inventories consisted of the following:
| April 26, 2025 |  | April 27, 2024
Raw materials | $ | 46,340 |  |  | $ | 66,900 |
Work-in-process | 10,223 |  |  | 13,848 |
Finished goods | 49,276 |  |  | 57,260 |
| $ | 105,839 |  |  | $ | 138,008 |
Property, plant and equipment | Property and equipment, net consisted of the following:
| April 26, 2025 |  | April 27, 2024
Land | $ | 3,024 |  |  | $ | 2,895 |
Buildings | 73,373 |  |  | 71,670 |
Machinery and equipment | 139,079 |  |  | 131,983 |
Office furniture and equipment | 4,027 |  |  | 3,765 |
Computer software and hardware | 48,087 |  |  | 46,135 |
Construction in Process | 1,619 |  |  | 5,064 |
Demonstration equipment | 7,355 |  |  | 7,094 |
Transportation equipment | 8,455 |  |  | 7,667 |
| 285,019 |  |  | 276,273 |
Less accumulated depreciation | 211,135 |  |  | 204,521 |
| $ | 73,884 |  |  | $ | 71,752 |
Schedule of accrued liabilities | Accrued expenses consisted of the following:
| April 26, 2025 |  | April 27, 2024
Compensation | $ | 23,217 |  |  | $ | 27,365 |
Taxes, other than income taxes | 3,259 |  |  | 3,410 |
Accrued employee benefits | 4,105 |  |  | 3,871 |
Operating lease liabilities | 2,044 |  |  | 1,984 |
Short-term accrued expenses | 9,080 |  |  | 6,398 |
| $ | 41,705 |  |  | $ | 43,028 |
Schedule of other nonoperating income (expense) | Other expense and debt issuance costs write-off, net consisted of the following:
| Year Ended
| April 26, 2025 |  | April 27, 2024 |  | April 29, 2023
Foreign currency transaction gains (losses) | $ | 658 |  |  | $ | 284 |  |  | $ | 479 |
Equity in losses of affiliates | (3,053) |  |  | (3,764) |  |  | (3,332) |
Allowance for credit losses on affiliate loan | (15,480) |  |  | — |  |  | — |
Impairment of equity method investees | — |  |  | (6,359) |  |  | (4,473) |
Debt issuance costs write off | — |  |  | (3,353) |  |  | — |
Other | 80 |  |  | 96 |  |  | 115 |
| $ | (17,795) |  |  | $ | (13,096) |  |  | $ | (7,211) |
Investment Income | Interest (expense) income, net consisted of the following:
| Year Ended
| April 26, 2025 |  | April 27, 2024 |  | April 29, 2023
Interest expense: |  |  |  |  |
Interest expense | $ | (2,873) |  |  | $ | (3,397) |  |  | $ | (1,127) |
Debt issuance amortization expense | (1,614) |  |  | (1,551) |  |  | — |
Total interest expense | (4,487) |  |  | (4,948) |  |  | (1,127) |
Interest income: |  |  |  |  |
Interest income | 5,834 |  |  | 1,530 |  |  | 207 |
Interest income (expense), net | $ | 1,347 |  |  | $ | (3,418) |  |  | $ | (920) |

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