Note 18 - Income Taxes - Summary of Deferred Income Tax Assets and Liabilities (Details) - USD ($) |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Compensation and benefit accruals | $ 840,000 | $ 554,000 |
| Inventory valuation | 1,013,000 | 945,000 |
| Federal and state net operating loss carryforwards | 37,098,000 | 36,463,000 |
| Deferred revenue | 129,000 | 23,000 |
| Interest limitation carryover | 1,261,000 | 873,000 |
| Defined benefit pension plan | 0 | 21,000 |
| Lease liabilities | 1,217,000 | 864,000 |
| Foreign deferred revenue and other provisions | 2,188,000 | 2,047,000 |
| Capitalized research and experimental costs | 211,000 | 201,000 |
| Other | 314,000 | 350,000 |
| Total | 44,271,000 | 42,341,000 |
| Domestic valuation allowance | (39,905,000) | (38,748,000) |
| Total deferred tax assets | 4,366,000 | 3,593,000 |
| Defined benefit pension plan | (124,000) | 0 |
| Prepaid and other assets | (936,000) | (787,000) |
| Right-of-use assets, net* | (1,118,000) | (759,000) |
| Total deferred tax liabilities | (2,178,000) | (1,546,000) |
| Net deferred tax asset | $ 2,188,000 | $ 2,047,000 |
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from capitalized research and experimental costs. No definition available.
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| X | ||||||||||
- Definition Amount of domestic deferred tax assets for which it is more likely than not that a tax benefit will not be realized. No definition available.
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| X | ||||||||||
- Definition Deferred tax assets foreign deferred revenue and other provision. No definition available.
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from lease liabilities. No definition available.
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| X | ||||||||||
- Definition Represents information pertaining to the deferred tax liabilities attributable to defined benefit pension plans. No definition available.
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| X | ||||||||||
- Definition Amount of deferred tax liability attributable to taxable temporary differences from right-of-Use assets. No definition available.
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| X | ||||||||||
- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible interest carryforward. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred income. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from inventory. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from employee benefits, classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from pension benefits. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of deferred tax consequences attributable to taxable temporary differences derived from prepaid expenses. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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