Note 13 - Contingent Consideration - Summary of the Key Assumptions Used to Calculate Fair Value of Warrants (Details) R$ in Millions, $ in Millions	Mar. 31, 2026 USD ($)	Dec. 31, 2025 USD ($)	Dec. 05, 2025 USD ($)	Dec. 05, 2025 BRL (R$)	Jun. 30, 2024 USD ($)
Northeast Power Systems, Inc (NEPSI) [Member]
Fair value (millions)					$ 7.0
Comtrafo Industria de Transformadores Eletricos S.A. (Comtrafo) [Member]
Fair value (millions)	$ 39.5	$ 34.8	$ 34.8	R$ 382.5
Measurement Input, EDITDA Continuous Risk Premium \| Northeast Power Systems, Inc (NEPSI) [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input					5.5
Measurement Input, Revenue Volatility [Member] \| Northeast Power Systems, Inc (NEPSI) [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input					27.5
Measurement Input, EBITDA Continuous Risk Premium [Member] \| Comtrafo Industria de Transformadores Eletricos S.A. (Comtrafo) [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input	1.4	2.1	2.1	2.1
Measurement Input, Share Price [Member] \| Northeast Power Systems, Inc (NEPSI) [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input					23.39
Measurement Input, EBITDA Volatility [Member] \| Comtrafo Industria de Transformadores Eletricos S.A. (Comtrafo) [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input	25	25	25	25
Measurement Input, Payment Delay [Member] \| Northeast Power Systems, Inc (NEPSI) [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input					80
Measurement Input, Payment Delay [Member] \| Comtrafo Industria de Transformadores Eletricos S.A. (Comtrafo) [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input	89	89	89	89
Measurement Input, Credit Spread [Member] \| Comtrafo Industria de Transformadores Eletricos S.A. (Comtrafo) [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input	1.9	1.9	1.9	1.9
Measurement Input, EBITDA Discount Rate [Member] \| Comtrafo Industria de Transformadores Eletricos S.A. (Comtrafo) [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input	14.7	15	15	15