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Note 2 - Acquisitions (Details Textual) $ in Thousands |  |  |  |  |  |  |  | 3 Months Ended | 6 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 18, 2024 USD ($) | Nov. 13, 2024 USD ($) | Oct. 28, 2024 USD ($) shares | Sep. 30, 2024 USD ($) | Mar. 31, 2024 USD ($) | Feb. 19, 2024 USD ($) | Jul. 01, 2023 USD ($) | Dec. 31, 2024 USD ($) | Mar. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2024 USD ($) | Jun. 30, 2024 USD ($)
Number of Businesses Acquired |  |  |  |  |  |  |  | 3 |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  | $ 586,712 |  |  | $ 586,712 |  | $ 586,712 | $ 281,283
Business Combination, Acquisition Related Costs |  |  |  |  |  |  |  | 16,400 |  | $ 1,195 | 18,240 | $ 1,696 |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  |  |  |  |  |  | 419,652 | $ 29,229 |  |
Amran Instrument Transformers [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  | $ 179,200 |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  |  | $ 153,200 |  |  |  |  |  |  |  |  |  |  |
Amran Instrument Transformers [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) | shares |  |  | 152,299 |  |  |  |  |  |  |  |  |  |  |
Amran Instrument Transformers [Member] | Treasury Stock, Common [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) | shares |  |  | 26 |  |  |  |  |  |  |  |  |  |  |
Narayan Powertech Pvt. Ltd. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  | 90.10% |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  |  | $ 261,600 |  |  |  |  |  |  |  |  |  |  |
Business Combination, Period for Right to Transfer Remaining Interest (Year) |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |
Business Combination, Period for Right to Acquire Remaining Interest (Year) |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  |  | $ 135,000 |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  | 12 years |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  | $ 298,900 |  |  |  |  |  |  |  |  |  |  |
Pro Forma Information, Interest Rate Assumption |  |  | 7.70% |  |  |  |  |  |  |  |  |  |  |
Pro Forma Information, Tax Rate Assumed |  |  | 22.60% |  |  |  |  |  |  |  |  |  |  |
Business Combination, Acquisition Related Costs |  |  |  |  |  |  |  | 11,200 |  |  | 12,800 |  |  |
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual |  |  |  |  |  |  |  | 19,500 |  |  |  |  |  |
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual |  |  |  |  |  |  |  | 900 |  |  |  |  |  |
Narayan Powertech Pvt. Ltd. [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  |  | $ 106,300 |  |  |  |  |  |  |  |  |  |  |
Narayan Powertech Pvt. Ltd. [Member] | Trade Names [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets |  |  | $ 28,700 |  |  |  |  |  |  |  |  |  |  |
Narayan Powertech Pvt. Ltd. [Member] | Mold-Tech Singapore [Member] | Scenario, Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  | 9.90% |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable |  |  | $ 26,700 |  |  |  |  |  |  |  |  |  |  |
Nascent Technology Manufacturing [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred | $ 7,600 |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill | $ 6,500 |  |  |  |  |  |  |  |  |  |  |  |  |
Custom Biogenic Systems [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  | $ 4,400 |  |  |  |  |  |  |  |  |  |  |  |
Sanyu Switch Co., Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  | $ 20,931 | $ 20,900 |  |  |  |  |  |  | 20,931 |
Payments to Acquire Businesses, Gross |  |  |  |  | 22,178 |  |  |  |  |  |  |  | 22,178 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  |  |  |  | 2,600 |  |  | 2,900 | $ 2,600 |  | 2,900 |  | 2,900 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets |  |  |  |  |  | $ 2,900 |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  |  |  |  | 12 years |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | 6,696 | $ 9,100 |  | 9,100 | 6,696 |  | 9,100 |  | 9,100 |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  |  |  |  | 22,200 |  |  |  |  |
Business Combination, Consideration Payable |  |  |  |  | $ 2,464 | 2,500 |  | 2,464 | $ 2,464 |  | 2,464 |  | 2,464 |
Sanyu Switch Co., Ltd [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  |  |  |  |  | 2,200 |  |  |  |  |  |  |  |
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, Gross |  |  |  | 33,890 |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  |  |  | 10,700 |  |  |  | 10,700 |  |  | 10,700 |  | 10,700 |
Goodwill |  |  |  | $ 13,889 |  |  |  | 13,900 |  |  | 13,900 |  | 13,900 |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  |  | $ 29,200 |  |  |  |  |  |  |
Minntronixs [Member] | Customer-Related Intangible Assets [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  |  |  |  |  |  |  | $ 7,500 |  |  | $ 7,500 |  | $ 7,500 |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  |  |  |  |  |  | 15 years |  |  | 15 years |  | 15 years |
Minntronixs [Member] | Trademarks [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets |  |  |  |  |  |  |  | $ 3,200 |  |  | $ 3,200 |  | $ 3,200 |

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