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Note 3 - Acquisition (Details Textual) - Enercon Technologies, Ltd [Member] - USD ($) $ in Thousands			3 Months Ended			6 Months Ended	9 Months Ended
	Nov. 14, 2024	Sep. 18, 2024	Sep. 30, 2025	Sep. 30, 2024	Jun. 30, 2024	Jun. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Jan. 01, 2027	Dec. 31, 2024
Business Acquisition, Percentage of Voting Interests Acquired	80.00%
Business Combination, Price of Acquisition, Expected		$ 320,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 10,000
Payments to Acquire Businesses, Net of Adjustments	325,600						$ 324,100
Business Acquisition, Transaction Costs	85,600
Business Combination, Acquisition-Related Cost, Expense			$ 0	$ 4,300			0	$ 4,300
Goodwill, Measurement Period Adjustment							3,500
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory					$ 500	$ 2,400
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory, Net of Taxes					$ 400	$ 1,800
Redeemable Noncontrolling Interest, Equity, Fair Value	72,400		$ 81,300				$ 81,300			$ 80,600
Earnout Payment [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	5,000
Business Combination, Contingent Consideration, Liability	3,300
Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	240,000
Forecast [Member]
Business Acquisition, Percentage of Voting Interests Acquired									20.00%
Full Achievement of Earnout [Member] | Earnout Payment [Member]
Business Combination, Contingent Consideration, Liability	5,000
Above 90% and Less Than 100% Achievement of Earnout [Member] | Earnout Payment [Member]
Business Combination, Contingent Consideration, Liability	2,500
Less than 90% of Earnout [Member] | Earnout Payment [Member]
Business Combination, Contingent Consideration, Liability	$ 0

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- Definition

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Amount of expense for acquisition-related cost incurred to effect business combination. Includes, but is not limited to, finder's fee; advisory, legal, accounting, valuation, and other professional and consulting fees; and general administrative cost, including cost of maintaining internal acquisition department.

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