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Selected Financial Statement Data (Tables) | 12 Months Ended
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Apr. 30, 2022
Inventory Disclosure [Abstract] |
Schedule of inventory, current | Inventories consisted of the following:
| April 30, 2022 |  | May 1, 2021
Raw materials | $ | 71,410 |  |  | $ | 29,913 |
Work-in-process | 14,238 |  |  | 9,948 |
Finished goods | 48,744 |  |  | 34,495 |
| $ | 134,392 |  |  | $ | 74,356 |
Property, plant and equipment | Property and equipment, net consisted of the following:
| April 30, 2022 |  | May 1, 2021
Land | $ | 1,899 |  |  | $ | 1,924 |
Buildings | 69,170 |  |  | 69,608 |
Machinery and equipment | 110,079 |  |  | 98,451 |
Office furniture and equipment | 4,098 |  |  | 4,103 |
Computer software and hardware | 46,922 |  |  | 44,851 |
Construction in Process | 5,792 |  |  | — |
Demonstration equipment | 7,260 |  |  | 7,186 |
Transportation equipment | 7,065 |  |  | 7,264 |
| 252,285 |  |  | 233,387 |
Less accumulated depreciation | 185,520 |  |  | 174,705 |
| $ | 66,765 |  |  | $ | 58,682 |
Schedule of accrued liabilities | Accrued expenses consisted of the following:
| April 30, 2022 |  | May 1, 2021
Compensation | $ | 15,944 |  |  | $ | 13,079 |
Taxes, other than income taxes | 6,741 |  |  | 5,888 |
Accrued employee benefits | 3,227 |  |  | 2,174 |
Operating lease liabilities | 2,309 |  |  | 1,881 |
Short-term accrued expenses | 6,738 |  |  | 7,455 |
Acquisition-related contingency consideration | — |  |  | 195 |
| $ | 34,959 |  |  | $ | 30,672 |
Schedule of other nonoperating income (expense) | Other (expense) income, net consisted of the following:
| Year Ended
| April 30, 2022 |  | May 1, 2021 |  | May 2, 2020
Foreign currency transaction (losses) gains | $ | (227) |  |  | $ | (675) |  |  | $ | 207 |
Equity in losses of affiliates | (2,970) |  |  | (2,370) |  |  | (741) |
Other | 88 |  |  | 62 |  |  | (7) |
| $ | (3,109) |  |  | $ | (2,983) |  |  | $ | (541) |

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