Note 1 - Description of Business and Summary of Significant Accounting Policies (Details Textual) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended		24 Months Ended
	Sep. 12, 2022 USD ($) $ / shares shares	Dec. 31, 2024 USD ($) $ / shares	Dec. 31, 2023 USD ($) $ / shares	Dec. 31, 2024 USD ($) $ / shares	Jan. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Number of Reportable Segments		3
Cash and Cash Equivalents, at Carrying Value		$ 7,721	$ 1,099	$ 7,721
Accounts Receivable, Sale		56,632	40,343
Accounts Receivable, Sale, Discount Fees		1,474	$ 858
Debt and Lease Obligation		15,239		15,239
Debt, Current		$ 3,720		$ 3,720
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares		$ 0.001	$ 0.001	$ 0.001
Interest Income, Other		$ 7	$ 8
Accounts Receivable, after Allowance for Credit Loss						$ 17,018
Depreciation		$ 6,023	$ 5,719
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		73.00%	74.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Five Largest Customers [Member]
Concentration Risk, Percentage			40.00%	50.00%
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		$ 7,578		$ 7,578
Revolving Credit Facility [Member]
Line of Credit Facility, Remaining Borrowing Capacity		24,901		24,901
Line of Credit, Current		$ 0		$ 0
Maximum [Member]
Product Warranty Term (Year)		5 years
Maximum [Member] | The Sales Agreement [Member]
Value of Shares Issuable, Maximum	$ 12,000
Minimum [Member]
Product Warranty Term (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] | Maximum [Member]
Annual Tower Production Capacity		550