Note 5 - Product Warranties - Changes in Accrual for Product Warranties (Details) - USD ($) |
6 Months Ended | |
|---|---|---|
Apr. 30, 2026 |
Apr. 30, 2025 |
|
| Balance at beginning of period | $ 100,000 | $ 65,000 |
| Liabilities accrued for warranties issued during the period | 77,171 | 64,498 |
| Warranty claims and costs paid during the period | (56,612) | (31,941) |
| Changes in liability for pre-existing warranties during the period | (40,559) | (32,557) |
| Balance at end of period | $ 80,000 | $ 65,000 |
| X | ||||||||||
- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of decrease in the standard and extended product warranty accrual from payments made in cash or in kind to satisfy claims under the terms of the standard and extended product warranty. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of increase (decrease) in the standard and extended product warranty accrual from changes in estimates attributable to preexisting product warranties. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of increase in the standard and extended product warranty accrual from warranties issued. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|