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Note 5 - Income Taxes (Tables) | 12 Months Ended
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Mar. 31, 2025
Notes Tables |
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] |
|  | 2025 |  |  | 2024 |
|  | (In thousands) |
Current: |  |  |  |  |  |  |  |
Federal |  | $ | 3 |  |  | $ | 78 |
Foreign, state and other |  |  | — |  |  |  | 12 |
Deferred: |  |  |  |  |  |  |  |
Federal |  |  | — |  |  |  | — |
Foreign, state and other |  |  | — |  |  |  | — |
Provision for income tax expense |  | $ | 3 |  |  | $ | 90 |
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
|  | 2025 |  |  | 2024 |
|  | (In thousands) |
Statutory provision |  | $ | (991 | ) |  | $ | 180 |
Foreign subsidiary |  |  | (118 | ) |  |  | (248 | )
State taxes |  |  | (293 | ) |  |  | 55 |
Permanent differences |  |  | 124 |  |  |  | 261 |
Adjustment to prior year taxes |  |  | (355 | ) |  |  | 86 |
Valuation allowance |  |  | 1,636 |  |  |  | (244 | )
Provision for income tax expense |  | $ | 3 |  |  | $ | 90 |
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|  | 2025 |  |  | 2024 |
|  | (In thousands) |
Deferred tax assets: |  |  |  |  |  |  |  |
Accounts receivable reserves |  | $ | 327 |  |  | $ | 71 |
Inventory |  |  | 175 |  |  |  | 190 |
Accruals |  |  | 10 |  |  |  | 116 |
Net operating loss and credit carry forwards |  |  | 5,649 |  |  |  | 4,152 |
Total deferred tax assets: |  |  | 6,161 |  |  |  | 4,529 |
Valuation allowance |  |  | (6,145 | ) |  |  | (4,510 | )
Net deferred tax assets: |  |  | 16 |  |  |  | 19 |
Deferred tax liabilities: |  |  |  |  |  |  |  |
Property and equipment |  |  | (16 | ) |  |  | (19 | )
Total deferred tax liabilities: |  | $ | (16 | ) |  | $ | (19 | )
Summary of Operating Loss Carryforwards [Table Text Block] |
|  | Federal NOL's |  |  | State NOL's |  |  |  |  |
Loss Year (Fiscal) |  | Included in DTA (in millions) |  |  | Included in DTA (in millions) |  |  | Expiration Year (Fiscal) |
2014 |  | $ | — |  |  | $ | — |  |  |  | 2034 |
2016 |  | $ | — |  |  | $ | 0.6 |  |  |  | 2036 |
2017 |  | $ | — |  |  | $ | 0.8 |  |  |  | 2037 |
2018 |  | $ | — |  |  | $ | 2.6 |  |  | Federal indefinite/State 2038 |
2019 |  | $ | 1.9 |  |  | $ | 2.7 |  |  | Federal indefinite/State 2039 |
2020 |  | $ | 3.7 |  |  | $ | 3.0 |  |  | Federal indefinite/State 2040 |
2021 |  | $ | 4.0 |  |  | $ | 3.2 |  |  | Federal indefinite/State 2041 |
2022 |  | $ | 3.4 |  |  | $ | 2.9 |  |  | Federal indefinite/State 2042 |
2024 |  | $ | 2.4 |  |  | $ | 2.1 |  |  | Federal indefinite/State 2044 |
2025 |  | $ | 3.7 |  |  | $ | 3.2 |  |  | Federal indefinite/State 2045 |
Total |  | $ | 19.1 |  |  | $ | 21.1 |  |  |  |  |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-9 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-2 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 231 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482663/740-10-55-231 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-12A Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-12 + Details
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