Note 8 - Goodwill and Intangibles (Details Textual) $ in Thousands |
9 Months Ended | 12 Months Ended |
|---|---|---|
|
Jun. 30, 2020
USD ($)
|
Sep. 30, 2019
USD ($)
|
|
| Goodwill, Impairment Loss | $ 0 | $ 0 |
| Number of Patents Granted | 22 | |
| Patents [Member] | ||
| Finite-Lived Intangible Asset, Useful Life (Year) | 20 years |
| X | ||||||||||
- Definition Represents the number of patents granted in the United States. No definition available.
|
| X | ||||||||||
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
|
| X | ||||||||||
- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|