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Note 10 - Income Taxes - Significant Components of Consolidated Deferred Tax Assets (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Mar. 31, 2023
--- | --- | ---
Depreciation | $ (6,451) | $ (5,786)
Total deferred tax liabilities | (6,451) | (5,786)
Unrealized derivative loss - OCI | 0 | 106
Inventory capitalization | 552 | 548
Postretirement benefits other than pensions | 26 | 25
Restricted stock compensation | 77 | 91
Unrealized loss - mark to market derivatives | 403 | 526
Other | 136 | 133
Total deferred tax assets | 1,194 | 1,429
Net deferred tax liability | $ (5,257) | $ (4,357)

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