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Nature of Business and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Apr. 29, 2023
Accounting Policies [Abstract] |
Equity Method Investments | Summarized financial information for equity method investments consist of the following:
| Year Ended
| April 29, 2023 |  | April 30, 2022 |  | May 1, 2021
Balance sheet data: |  |  |  |  |
Current assets | $ | 5,504 |  |  | $ | 6,672 |  |  | $ | 7,534 |
Non-current assets | 3,312 |  |  | 4,491 |  |  | 4,637 |
Current liabilities | 25,298 |  |  | 13,938 |  |  | 2,807 |
Non-current liabilities | 721 |  |  | 1,738 |  |  | 1,793 |
Income statement data: |  |  |  |  |
Net loss | $ | (16,932) |  |  | $ | (11,928) |  |  | $ | (13,436) |
Schedule of Cash and Cash Equivalents | The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the consolidated balance sheets that sum to the totals of the same amounts shown in the consolidated statements of cash flows. Restricted cash consists of cash and cash equivalents held in bank deposit accounts to secure issuances of foreign bank guarantees.
| April 29, 2023 |  | April 30, 2022 |  | May 1, 2021
Cash and cash equivalents | $ | 23,982 |  |  | $ | 17,143 |  |  | $ | 77,590 |
Restricted cash | 708 |  |  | 865 |  |  | 2,812 |
Total cash, cash equivalents, and restricted cash shown in the consolidated statements of cash flows | $ | 24,690 |  |  | $ | 18,008 |  |  | $ | 80,402 |
Property, Plant and Equipment, Estimated Useful Life | Property and equipment: In accordance with ASC 360, Property, Plant, and Equipment, property and equipment are stated at cost and depreciated principally on the straight-line method over the following estimated useful lives:
| Years
Buildings and improvements | 5 - 40
Machinery and equipment | 5 - 7
Office furniture and equipment | 3 - 5
Computer software and hardware | 3 - 5
Equipment held for rental | 2 - 7
Demonstration equipment | 3 - 5
Transportation equipment | 5 - 7
Schedule of Earnings Per Share, Basic and Diluted | The following is a reconciliation of the net income and common share amounts used in the calculation of basic and diluted EPS for the fiscal years ended April 29, 2023, April 30, 2022 and May 1, 2021:
| Net income |  | Shares |  | Per share income
For the year ended April 29, 2023: |  |  |  |  |
Basic earnings per share | $ | 6,802 |  |  | 45,404 |  |  | $ | 0.15 |
Dilution associated with stock compensation plans | — |  |  | 117 |  |  | — |
Diluted earnings per share | $ | 6,802 |  |  | 45,521 |  |  | $ | 0.15 |
For the year ended April 30, 2022: |  |  |  |  |
Basic earnings per share | $ | 592 |  |  | 45,188 |  |  | $ | 0.01 |
Dilution associated with stock compensation plans | — |  |  | 138 |  |  | — |
Diluted earnings per share | $ | 592 |  |  | 45,326 |  |  | $ | 0.01 |
For the year ended May 1, 2021: |  |  |  |  |
Basic earnings per share | $ | 10,926 |  |  | 44,989 |  |  | $ | 0.24 |
Dilution associated with stock compensation plans | — |  |  | 213 |  |  | — |
Diluted earnings per share | $ | 10,926 |  |  | 45,202 |  |  | $ | 0.24 |

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