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v3.25.1

Note 1 - Basis of Presentation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 12, 2022 | Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024 | Dec. 19, 2024
Revenue as Percentage of Sales Associated with New Wind Turbine Installations |  | 52.00% | 39.00% |  |
Debt and Lease Obligation |  | $ 17,871 |  |  |
Debt, Current |  | 7,073 |  |  |
Long-Term Debt |  | $ 12,191 |  | $ 9,196 |
Common Stock, Par or Stated Value Per Share (in dollars per share) |  | $ 0.001 |  | $ 0.001 |
Accounts Receivable, Sale |  | $ 8,840 | $ 6,805 |  |
Accounts Receivable, Sale, Discount Fees |  | 198 | $ 164 |  |
The Sales Agreement [Member] |  |  |  |  |
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ 1.000 |  |  |  |
Sales Agent Commission Percentage | 2.75% |  |  |  |
Sale of Stock, Common Stock Available for Issuance, Value |  | 11,667 |  |  |
The Sales Agreement [Member] | Maximum [Member] |  |  |  |  |
Value of Shares Issuable, Maximum | $ 12,000 |  |  |  |
Revolving Credit Facility [Member] |  |  |  |  |
Line of Credit, Current |  | 3,357 |  |  |
The 2022 Credit Facility [Member] |  |  |  |  |
Long-Term Debt |  | 7,307 |  |  |
Line of Credit, Current |  | $ 10,664 |  |  | $ 7,578

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