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Note 8 - Income Taxes - Deferred Income Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Mar. 31, 2024
--- | --- | ---
Future tax credits | $ 3,719 | $ 4,884
Inventory valuation | 7,294 | 9,951
Employee benefits | 3,108 | 2,739
Insurance | 878 | 922
State depreciation basis differences | 3,152 | 3,344
Operating leases | 128 | 190
Intangibles | 2,994 | 2,760
Pension and post-retirement benefits | 2,877 | 8,734
Interest | 34 | 18
Business interest limitation | 3,194 | 0
Deferred revenue | 164 | 260
Net operating loss and other tax attribute carryovers | 278 | 558
Other | 467 | 427
Total assets | 28,287 | 34,787
Valuation allowance - noncurrent | (3,719) | (4,884)
Total deferred income tax assets, net | 24,568 | 29,903
Property basis and depreciation difference | 27,537 | 25,260
Inventory reserve | 5,200 | 3,091
Right-of-use assets | 2,236 | 3,971
Pension | 21,587 | 21,682
Other | 290 | 219
Total liabilities | 56,850 | 54,223
Deferred income tax liability, net | $ (32,282) | $ (24,320)

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