Note 2 - Summary of Significant Accounting Policies - Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands |
6 Months Ended | |
|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Beginning balance | $ 250 | $ 250 |
| Additions charged to costs and expenses | 1 | 4 |
| Accounts charged off less recoveries | (1) | (4) |
| Ending balance | $ 250 | $ 250 |
| X | ||||||||||
- Definition Information pertaining to valuation allowances and reserves amounts charged off less recoveries. No definition available.
|
| X | ||||||||||
- Definition Amount of valuation and qualifying accounts and reserves. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|