Note 2 - Acquisition - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Mar. 31, 2026 |
Dec. 31, 2025 |
Dec. 05, 2025 |
Mar. 31, 2025 |
|---|---|---|---|---|---|
| Goodwill | $ 176,678 | $ 175,376 | $ 48,164 | ||
| Comtrafo Industria de Transformadores Eletricos S.A. (Comtrafo) [Member] | |||||
| Cash and cash equivalents | $ 12,800 | ||||
| Restricted cash | 3,400 | ||||
| Prepaid expenses and other current assets | 5,600 | ||||
| Accounts receivable | 6,500 | ||||
| Inventory | 28,600 | ||||
| Property, plant and equipment | 49,900 | ||||
| Deferred tax asset | 4,100 | $ 1,100 | |||
| Accounts payable and accrued expenses | (9,100) | ||||
| Debt, current and long-term | (8,800) | ||||
| Deferred revenue | (23,300) | ||||
| Net tangible assets/(liabilities) | 69,700 | ||||
| Intangible assets | 10,500 | ||||
| Goodwill | 122,700 | ||||
| Total purchase consideration | 202,900 | ||||
| Comtrafo Industria de Transformadores Eletricos S.A. (Comtrafo) [Member] | Backlog [Member] | |||||
| Intangible assets | 2,600 | 2,600 | |||
| Comtrafo Industria de Transformadores Eletricos S.A. (Comtrafo) [Member] | Customer Relationships [Member] | |||||
| Intangible assets | $ 7,900 | $ 7,900 |
| X | ||||||||||
- Definition Amount of restricted cash acquired in business combination and recognized at acquisition date. No definition available.
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| X | ||||||||||
- Definition Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables as well as accrued expenses, assumed at the acquisition date. No definition available.
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| X | ||||||||||
- Definition Amount of debt recognized during or after the current normal operating cycle. No definition available.
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| X | ||||||||||
- Definition Amount recognized as of the acquisition date for the identifiable tangible assets acquired in excess of (less than) the aggregate liabilities assumed. No definition available.
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- Definition Amount of cash and cash equivalent acquired in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of prepaid expense and asset classified as other, acquired in business combination and recognized at acquisition date, classified as current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of receivable acquired in business combination and recognized at acquisition date, classified as current. Includes, but is not limited to, receivable from customer for product and service. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of deferred revenue assumed in business combination and recognized at acquisition date, classified as current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of deferred tax asset acquired in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of identifiable finite-lived intangible asset acquired in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of inventory acquired in business combination and recognized at acquisition date, classified as current. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of property, plant, and equipment acquired in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of asset acquired in excess of (less than) liability assumed plus goodwill in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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