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Note 15 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	Oct. 05, 2023	May 03, 2023	Aug. 01, 2022	Sep. 30, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023	Oct. 28, 2022
Amount Financed by Dealers				$ 165,200	$ 165,432
Consumer Product Safety Commission [Member]
Settlement Agreement, Civil Fine Payments		$ 15,800
Power Home Solar, LLC Against Generac Power Systems, Inc. [Member] | Minimum [Member]
Loss Contingency, Damages Sought, Value			$ 25,000
Daniel Haak Lawsuit [Member]
Loss Contingency Accrual								$ 15,000
Case No. 22-cv-00072-JRG [Member]
Loss Contingency Accrual							$ 12,669
Litigation Settlement, Amount Awarded to Other Party	$ 11,500
Case No. 22-cv-00072-JRG [Member] | Estimated Prejudgment Interest [Member]
Loss Contingency Accrual						$ 1,826

X

- Definition

Amount financed by dealers to purchase goods from the entity.

+ References

No definition available.

+ Details

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X

- Definition

Represents civil fine payments for settlement payment.

+ References

No definition available.

+ Details

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X

- Definition

Amount awarded to other party in judgment or settlement of litigation.

+ References

No definition available.

+ Details

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X

- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-10

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X

- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-4

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-9

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