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v3.25.0.1

Note 1 - Description of Business and Summary of Significant Accounting Policies (Details Textual) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Nov. 14, 2024
Gain (Loss), Foreign Currency Transaction, before Tax | $ 1,900 | $ (1,400) | $ 300 |
Intangible Assets, Percent of Total Assets | 24.40% | 8.60% |  |
Asset, Held-for-Sale, Not Part of Disposal Group, Current | $ 2,062 | $ 1,278 |  |
Impairment of Intangible Assets (Excluding Goodwill) | $ 400 | $ 0 | $ 0 |
Excessive Dividend Rate of Class B Over Class A | 5.00% |  |  |
Excessive Undistributed Earnings Allocation Rate of Class B Over Class A | 5.00% |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | 0 | 0 | 0 |
Research and Development Expense | $ 23,586 | $ 22,487 | $ 20,238 |
Common Class B [Member] |  |  |  |
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ 0.1 | $ 0.1 |  |
Common Class A [Member] |  |  |  |
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ 0.1 | $ 0.1 |  |
Trade Names [Member] |  |  |  |
Impairment of Intangible Assets (Excluding Goodwill) | $ 400 |  |  |
Minimum [Member] |  |  |  |
Product Warranty Obligation, Term (Year) | 1 year |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 1 year |  |  |
Minimum [Member] | Building and Building Improvements [Member] |  |  |  |
Property, Plant and Equipment, Useful Life (Year) | 1 year |  |  |
Minimum [Member] | Machinery and Equipment [Member] |  |  |  |
Property, Plant and Equipment, Useful Life (Year) | 3 years |  |  |
Maximum [Member] |  |  |  |
Product Warranty Obligation, Term (Year) | 3 years |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 17 years |  |  |
Maximum [Member] | Building and Building Improvements [Member] |  |  |  |
Property, Plant and Equipment, Useful Life (Year) | 33 years |  |  |
Maximum [Member] | Machinery and Equipment [Member] |  |  |  |
Property, Plant and Equipment, Useful Life (Year) | 14 years |  |  |
Enercon Technologies, Ltd [Member] |  |  |  |
Subsidiary, Ownership Percentage, Parent |  |  |  | 80.00%

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