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Note 9 - Income Taxes - Significant Components of Consolidated Deferred Tax Assets (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Mar. 31, 2024
--- | --- | ---
Depreciation | $ (6,199) | $ (6,451)
Unrealized gain - mark to market derivatives | (87) | 0
Total deferred tax liabilities | (6,286) | (6,451)
Inventory capitalization | 537 | 552
Interest expense limitation | 140 | 0
Postretirement benefits other than pensions | 29 | 26
Restricted stock compensation | 23 | 77
Unrealized Loss - mark to market derivatives | 0 | 403
Other | 79 | 136
Total deferred tax assets | 808 | 1,194
Net deferred tax liability | $ (5,478) | $ (5,257)

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