Note 15 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	Oct. 05, 2023	May 03, 2023	Aug. 01, 2022	Sep. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Amount Financed by Dealers				$ 146,366		$ 158,028
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
Case No. 22-cv-00072-JRG [Member]
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