Note 11 - Guarantees - Schedule of Product Warranty Liability (Details) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Beginning accrued product warranty | $ 451,000 | $ 703,000 |
| Accruals for warranties issued | 265,000 | 353,000 |
| Adjustments related to pre-existing warranties including expirations and changes in estimates | 61,000 | (22,000) |
| Cost of warranty repair | (366,000) | (583,000) |
| Ending accrued product warranty | $ 411,000 | $ 451,000 |
| 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. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| 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
|