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v3.24.0.1

Note 1 - Description of Business and Summary of Significant Accounting Policies (Details Textual) $ / shares in Units, shares in Thousands, $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Sep. 12, 2022 USD ($) $ / shares shares | Dec. 31, 2023 USD ($) MWh $ / shares | Dec. 31, 2022 USD ($) $ / shares | Dec. 31, 2021 | Jan. 31, 2023 USD ($)
Number of Reportable Segments |  | 3 |  |  |
Cash and Cash Equivalents, at Carrying Value |  | $ 1,099 | $ 12,732 |  |
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect |  | (11,633) | 11,880 |  |
Accounts Receivable, Sale |  | 40,343 | 93,245 |  |
Accounts Receivable, Sale, Discount Fees |  | 858 | $ 1,431 |  |
Debt and Lease Obligation |  | 17,678 |  |  |
Debt, Current |  | $ 8,056 |  |  |
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares |  | $ 0.001 | $ 0.001 |  |
Proceeds from Issuance of Common Stock, Net |  | $ 0 | $ 230 |  |
Interest Income, Other |  | 8 | 0 |  |
Depreciation, Total |  | $ 5,719 | $ 5,335 |  |
Customer Concentration Risk [Member] |  |  |  |  |
Number of Major Customers |  | 5 | 5 |  |
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] | Five Largest Customers [Member] |  |  |  |  |
Concentration Risk, Percentage |  | 65.00% | 69.00% |  |
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Five Largest Customers [Member] |  |  |  |  |
Concentration Risk, Percentage |  | 27.00% | 43.00% |  |
Long-Term Contract with Customer [Member] |  |  |  |  |
Contract with Customer, Asset, before Allowance for Credit Loss |  |  |  |  | $ 175,000
The Sales Agreement [Member] |  |  |  |  |
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares | $ 1.000 |  |  |  |
Sales Agent Commission Percentage | 2.75% |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | shares | 100,379 |  |  |  |
Proceeds from Issuance of Common Stock, Net | $ 323 |  |  |  |
Payments of Stock Issuance Costs | 9 |  |  |  |
Other Stock Issuance Expenses | 93 |  |  |  |
Sale of Stock, Common Stock Available for Issuance, Value |  | $ 11,667 |  |  |
Senior Secured Term Loan [Member] |  |  |  |  |
Line of Credit, Current |  | 6,135 |  |  |
Revolving Credit Facility [Member] |  |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity |  | 21,714 |  |  |
Line of Credit, Current |  | $ 4,657 |  |  |
Maximum [Member] |  |  |  |  |
Product Warranty Term (Year) |  | 5 years |  | 5 years |
Maximum [Member] | The Sales Agreement [Member] |  |  |  |  |
Value of Shares Issuable, Maximum | $ 12,000 |  |  |  |
Minimum [Member] |  |  |  |  |
Product Warranty Term (Year) |  | 1 year |  | 1 year |
Heavy Fabrications [Member] |  |  |  |  |
Number of Facilities |  | 2 |  |  |
Number of Tower Sections in Production Capacity of Turbines Total |  | 1,650 |  |  |
Heavy Fabrications [Member] | Customer Concentration Risk [Member] |  |  |  |  |
Number of Major Customers |  |  | 2 |  |
Heavy Fabrications [Member] | Maximum [Member] |  |  |  |  |
Annual Tower Production Capacity |  | 550 |  |  |
Heavy Fabrications [Member] | Minimum [Member] |  |  |  |  |
Power Generating Capacity of Turbines (Megawatt-Hour) | MWh |  | 1,100 |  |  |

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