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Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2022
Accounts Receivable, after Allowance for Credit Loss, Current | $ 78,626 | $ 77,681 | $ 77,800
Cash, Uninsured Amount | 3,300 | 2,300 |
Depreciation | $ 5,000 | 4,900 |
Standard Warranty Extended Term for Exceptions | 10 years |  |
Defined Contribution Plan, Cost | $ 2,300 | 2,500 |
Research and Development Expense | $ 3,500 | $ 3,400 |
Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares | 2,087,000 | 2,156,000 |
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax | $ 100 | $ (300) |
Other Expense [Member] |  |  |
Gain (Loss), Foreign Currency Transaction, before Tax | $ 300 |  |
Maximum [Member] |  |  |
Finite-Lived Intangible Asset, Useful Life | 20 years |  |
Standard Warranty Term | 5 years |  |
Minimum [Member] |  |  |
Finite-Lived Intangible Asset, Useful Life | 5 years |  |
Standard Warranty Term | 1 year |  |
Leasehold Improvements [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 15 years |  |

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