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Note 1 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Sep. 30, 2025
Notes Tables |
Property, Plant and Equipment, Estimated Useful Life [Table Text Block] |
|  | Years |
Rental equipment |  |  | 2 - 5 |
Property, plant and equipment: |  |  |  |
Machinery and equipment |  |  | 3 - 15 |
Buildings and building improvements |  |  | 10 - 50 |
Other |  |  | 5 - 10 |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | Years |
Developed technology |  |  | 10 - 18 |
Trade names |  |  | 5 |
Customer relationships |  |  | 4 |
Non-compete agreements |  |  | 4 |
Schedule of Product Warranty Liability [Table Text Block] |
Balance at October 1, 2023 |  | $ | 658 |
Accruals for warranties issued during the year |  |  | 2,331 |
Settlements made (in cash or in kind) during the year |  |  | (1,738 | )
Balance at September 30, 2024 |  |  | 1,251 |
Accruals for warranties issued during the year |  |  | 1,365 |
Settlements made (in cash or in kind) during the year |  |  | (1,153 | )
Balance at September 30, 2025 |  | $ | 1,463 |

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