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Note 12 - Income Taxes - Components of Net Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2023
--- | --- | --- | ---
Capitalized research expenditures | [1] | $ 8,148 | $ 5,116 |
Credits |  | 2,774 | 2,528 |
Allowances and reserves |  | 2,687 | 3,033 |
Stock compensation deductible differences |  | 1,632 | 1,346 |
Operating lease liabilities |  | 1,860 | 2,182 |
Inventories |  | 1,153 | 668 |
Net operating loss |  | 3,219 | 6,633 |
Other |  | 265 | 187 |
Deferred tax assets, gross |  | 21,738 | 21,693 |
Valuation allowance |  | (8,999) | (5,975) | $ (582)
Deferred tax assets, net |  | 12,739 | 15,718 |
Operating lease right-of-use assets |  | (1,843) | (2,120) |
Goodwill and intangible assets |  | (26,854) | (28,694) |
Property, plant and equipment |  | (2,273) | (2,813) |
Other |  | (579) | (579) |
Total deferred tax liabilities |  | (31,549) | (34,206) |
Deferred tax asset/(liabilities) |  | $ (18,810) | $ (18,488) |
[1] | Under the Tax Cut and Jobs Act of 2017, research and development costs are no longer fully deductible and are required to be capitalized and amortized for U.S tax purposes effective January 1, 2022. The mandatory capitalization requirement increases our deferred tax assets and cash tax liabilities.

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