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Note 2 - Acquisitions (Details Textual) - USD ($) $ in Thousands |  |  |  |  |  |  | 3 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 29, 2024 | Sep. 30, 2024 | May 03, 2024 | Apr. 01, 2024 | Feb. 19, 2024 | Jul. 01, 2023 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Dec. 31, 2023 | Jul. 31, 2023
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  |  | $ (0) |  |  | $ 29,229 |  |
Goodwill |  | $ 292,180 |  |  |  |  | 292,180 | $ 281,283 |  |  |  |
Business Combination, Acquisition Related Costs |  |  |  |  |  |  | 1,840 |  |  | $ 501 |  |
Amran Instrument Transformers and Narayan Powertech Pvt. Ltd. [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred | $ 462,000 |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Liabilities Incurred | $ 250,000 |  |  |  |  |  |  |  |  |  |  |
Amran Instrument Transformers [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Cash, Percent | 85.00% |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Stock, Percent | 15.00% |  |  |  |  |  |  |  |  |  |  |
Narayan Powertech Pvt. Ltd. [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Cash, Percent | 90.00% |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Stock, Percent | 10.00% |  |  |  |  |  |  |  |  |  |  |
Sanyu Switch Co., Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  | 20,931 |  | $ 20,931 | $ 20,900 |  |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  |  |  |  | $ 22,200 |  |  |
Business Combination, Consideration Payable |  | 2,464 |  | 2,464 | 2,500 |  | 2,464 |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  | 2,600 |  | 2,600 | $ 2,600 |  | 2,600 |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  |  |  | 12 years |  |  |  |  |  |  |
Goodwill |  | 9,190 |  | $ 6,696 | $ 9,200 |  | 9,190 |  |  |  |  |
Sanyu Switch Co., Ltd [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  |  |  |  | $ 1,900 |  |  |  |  |  |  |
Sanyu Switch Co., Ltd [Member] | Trade Names [Member] |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets |  |  |  |  |  |  |  |  |  |  |  | $ 700
Minntronixs [Member] |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  | 29,229 |  |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  | $ 29,200 |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  | 10,700 |  |  |  |  | 10,700 |  |  |  | $ 10,700 |
Goodwill |  | 13,889 |  |  |  |  | 13,889 |  |  |  |  |
Minntronixs [Member] | Customer-Related Intangible Assets [Member] |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  | $ 7,500 |  |  |  |  | $ 7,500 |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  | 15 years |  |  |  |  | 15 years |  |  |  |  |
Minntronixs [Member] | Trademarks [Member] |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets |  |  |  |  |  |  |  |  |  |  | $ 3,200 |
Sanyu Electric Pte Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  | $ 3,500 |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  |  |  | $ 1,100 |  |  |  |
Goodwill |  |  | $ 1,900 |  |  |  |  |  |  |  |  |

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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479405/805-10-25-23 + Details
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