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Note 1 - Significant Accounting Policies (Tables) | 12 Months Ended
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Apr. 30, 2022
Notes Tables |
Financing Receivable, Allowance for Credit Loss [Table Text Block] |
|  | (In thousands) |
|  | Fiscal 2022 |  |  | Fiscal 2021 |  |  | Fiscal 2020 |
Balance at beginning of year |  | $ | 1,140 |  |  | $ | 1,350 |  |  | $ | 516 |
Net (credit) charge to expense |  |  | (581 | ) |  |  | (138 | ) |  |  | 893 |
Net charge-off |  |  | - |  |  |  | (72 | ) |  |  | (59 | )
Balance at end of year |  | $ | 559 |  |  | $ | 1,140 |  |  | $ | 1,350 |

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