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Note 14 - Contingent Consideration - Summary of the Key Assumptions Used to Calculate Fair Value of Warrants (Details) $ in Millions | Dec. 05, 2025 USD ($) | Jun. 30, 2024 USD ($) | Mar. 31, 2024 USD ($)
--- | --- | --- | ---
Northeast Power Systems, Inc (NEPSI) [Member] |  |  |
Fair value (millions) |  | $ 7.0 | $ 3.1
Comtrafo Industria de Transformadores Eletricos S.A. (Comtrafo) [Member] |  |  |
Fair value (millions) | $ 35.9 |  |
Measurement Input, EDITDA Continuous Risk Premium | Northeast Power Systems, Inc (NEPSI) [Member] |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input |  | 5.5 | 5.5
Measurement Input, EBITDA Continuous Risk Premium [Member] | Comtrafo Industria de Transformadores Eletricos S.A. (Comtrafo) [Member] |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input | 2.1 |  |
Measurement Input, Revenue Volatility [Member] | Northeast Power Systems, Inc (NEPSI) [Member] |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input |  | 27.5 | 24.8
Measurement Input, EBITDA Volatility [Member] | Comtrafo Industria de Transformadores Eletricos S.A. (Comtrafo) [Member] |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input | 25 |  |
Measurement Input, Share Price [Member] | Northeast Power Systems, Inc (NEPSI) [Member] |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input |  | 23.39 | 13.51
Measurement Input, Credit Spread [Member] | Comtrafo Industria de Transformadores Eletricos S.A. (Comtrafo) [Member] |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input | 1.9 |  |
Measurement Input, Payment Delay [Member] | Northeast Power Systems, Inc (NEPSI) [Member] |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input |  | 80 | 80
Measurement Input, Payment Delay [Member] | Comtrafo Industria de Transformadores Eletricos S.A. (Comtrafo) [Member] |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input | 89 |  |

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