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Note 4 - Fair Value Measurements - Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Jun. 30, 2025 | Mar. 31, 2023
--- | --- | --- | ---
Interest rate swaps |  | $ 1,181 |  |
Foreign exchange contracts |  | 501 | $ 68 |
Contingent consideration (a) | [1] | 330 | 660 |
Debt Securities, Available-for-Sale |  |  | 3,629 | $ 2,700
Equity securities |  |  | 2,211 |
Fair Value, Inputs, Level 1 [Member] |  |  |  |
Interest rate swaps |  | 0 |  |
Foreign exchange contracts |  | 0 | 0 |
Contingent consideration (a) | [1] | 0 | 0 |
Debt Securities, Available-for-Sale |  |  | 0 |
Equity securities |  |  | 0 |
Fair Value, Inputs, Level 2 [Member] |  |  |  |
Interest rate swaps |  | 1,181 |  |
Foreign exchange contracts |  | 501 | 68 |
Contingent consideration (a) | [1] | 0 | 0 |
Debt Securities, Available-for-Sale |  |  | 0 |
Equity securities |  |  | 0 |
Fair Value, Inputs, Level 3 [Member] |  |  |  |
Interest rate swaps |  | 0 |  |
Foreign exchange contracts |  | 0 | 0 |
Contingent consideration (a) | [1] | 330 | 660 |
Debt Securities, Available-for-Sale |  |  | 3,629 |
Equity securities |  |  | 2,211 |
Deferred Compensation Plan [Member] |  |  |  |
Marketable securities - deferred compensation plan |  | 5,375 | 4,980 |
Deferred Compensation Plan [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Marketable securities - deferred compensation plan |  | 5,375 | 4,980 |
Deferred Compensation Plan [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Marketable securities - deferred compensation plan |  | 0 | 0 |
Deferred Compensation Plan [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Marketable securities - deferred compensation plan |  | $ 0 | $ 0 |
[1] | The Company’s financial liabilities based upon Level 3 inputs comprise of contingent consideration arrangement relating to its acquisition of SEPL in the event that certain financial targets are achieved during the two years following its acquisition in the fourth quarter of fiscal year 2024. The Company has determined the fair value of the liabilities for the contingent consideration based on an evaluation of the probability and amount of any deferred compensation that has been earned to date. This fair value measurement is based on significant inputs not observable in the market and thus represents a Level 3 measurement within the fair value hierarchy. The fair value of the contingent consideration liability associated with future payments was based on several factors, the most significant of which are typically the financial performance of the acquired business and the risk-adjusted discount rate for the fair value measurement.

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