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Note 12 - Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2023
Total earnings (loss) before income taxes | $ 5,961 | $ (275,648) | $ (389)
Federal income taxes at statutory rates, amount | $ 1,251 | $ (57,886) | $ (82)
Federal income taxes at statutory rates, percent | 21.00% | 21.00% | 21.00%
State income taxes, net of federal benefit, amount | $ 317 | $ (2,508) | $ (1,075)
State income taxes, net of federal benefit, percent | 5.30% | 0.90% | 276.30%
Compensation adjustments, amount | $ 2,283 | $ 2,738 | $ 1,506
Compensation adjustments, percent | 38.30% | (1.00%) | (387.10%)
Research and development credit, amount | $ (1,054) | $ (1,093) | $ (1,010)
Research and development credit, percent | (17.70%) | (0.40%) | (259.60%)
Research and development credit, percent | 17.70% | 0.40% | 259.60%
Return to provision adjustment, amount | $ 516 | $ (182) | $ (125)
Return to provision adjustment, percent | 8.70% | 0.10% | 32.10%
Subpart F, GILTI, & FDII, amount | $ (484) | $ (412) | $ (127)
Subpart F, GILTI, & FDII, percent | (8.10%) | 0.10% | 32.60%
Foreign rate differential, amount | $ 2,047 | $ (566) | $ (313)
Foreign rate differential, percent | 34.30% | 0.20% | 80.50%
Permanent difference | $ 47 | $ 479 | $ 33
Permanent difference, percent | 0.80% | (0.20%) | (8.50%)
Goodwill impairment, amount | $ 0 | $ 32,594 | $ 0
Goodwill impairment, percent | 0.00% | (11.80%) | 0.00%
Valuation allowance | $ 3,019 | $ 5,398 | $ (126)
Valuation allowance, percent | 50.60% | (2.00%) | 32.40%
Other, amount | $ (7) | $ 36 | $ 0
Other, percent | (0.10%) | 0.00% | 0.00%
Total income tax expense (benefit) | $ 7,935 | $ (21,402) | $ (1,319)
Total income tax (benefit) expense, percent | 133.12% | 7.76% | 339.07%
Effective income tax rate, amount | 133.12% | 7.76% | 339.07%

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