Note 8 - Income Taxes - Cash Paid for Income Taxes (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Federal | $ 25,197 | ||
| Income taxes paid, net of amounts refunded | 30,262 | $ 12,657 | $ 15,105 |
| Illinois Tax Authority [Member] | |||
| State and local | 1,600 | ||
| Other State Tax Authorities [Member] | |||
| State and local | $ 3,465 | ||
| X | ||||||||||
- Definition Amount, after income tax refund received, of cash paid to federal (national) tax jurisdiction for tax on income. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount, after income tax refund received, of cash paid to state and local tax jurisdictions for tax on income. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount, after refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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