Note 8 - Income Taxes (Details Textual) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Deferred Income Tax Liabilities, Net | $ 49,660 | $ 32,282 |
| Tax Credit Carryforward, Valuation Allowance | 2,300 | |
| Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations | 494 | $ (0) |
| Forecast [Member] | ||
| Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations | 500 | |
| New York State Division of Taxation and Finance [Member] | ||
| Tax Credit Carryforward, Amount | 700 | |
| Wisconsin Department of Revenue [Member] | ||
| Tax Credit Carryforward, Amount | $ 1,600 | |
| X | ||||||||||
- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from tax credit carryforwards for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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