Note 11 - Assets Held for Sale and Discontinued Operations (Details Textual) - Nestor Cables [Member] - USD ($) |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2025 |
Sep. 30, 2024 |
Sep. 30, 2023 |
|
| Discontinued Operation, Provision for Loss (Gain) on Disposal, before Income Tax | $ 16,589,000 | $ (16,589,000) | $ 0 | $ 0 |
| Discontinued Operations, Estimated Transaction Costs on Disposal | 1,489,000 | |||
| Disposal Group, Including Discontinued Operations, Goodwill Impairment | 2,022,000 | |||
| Disposal Group, Including Discontinued Operation, Impairment of Long-lived Assets | $ 13,078,000 | |||
| X | ||||||||||
- Definition The amount of estimated transaction costs associated with the disposal group. No definition available.
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| X | ||||||||||
- Definition Total loss recognized during the period from the impairment of long-lived assets attributable to a disposal group. No definition available.
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| X | ||||||||||
- Definition Total loss recognized during the period from the impairment of goodwill attributable to a disposal group. No definition available.
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| X | ||||||||||
- Definition Amount before tax of (gain) loss recognized for the (reversal of write-down) write-down to fair value, less cost to sell, of a discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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