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Note 7 - Segment Reporting (Details Textual) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2025 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Number of Reportable Segments		2
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | UNITED STATES
Concentration Risk, Percentage		78.00%	79.00%	77.00%
Geographic Concentration Risk [Member] | Long-lived Assets [Member] | UNITED STATES
Concentration Risk, Percentage		74.00%	76.00%
Clean Energy Product [Member]
Provision for Product Charges			$ 365	$ 4,350
Certain Patent Lawsuits [Member]
Legal Fees		$ 7,520	9,299	27,289
Class Action Lawsuits [Member]
Legal Fees		22,698
Multi-district Class Action Lawsuit [Member]
Legal Fees		15,000	$ 1,267	1,051
Government Inquiries and Other Matters [Member]
Legal Fees		$ 7,630
CPSC Civil Fines [Member]
Provision for Product Charges				$ 5,800
Portable Generator Product Liability Case [Member]
Legal Fees	$ 104,500
Settled Dispute With a Supplier for a Discontinued Product [Member]
Provision for Product Charges	$ 15,633

X

- Definition

Represents a specific product charge loss provision for a clean energy product customer that filed for bankruptcy, as well as a warranty provision to address certain clean energy product warranty-related matters.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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