Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Mar. 31, 2025 shares
Trading Arrangements, by Individual [Table]
Material Terms of Trading Arrangement [Text Block]	Item 5. Other Information On March 6, 2025, Aaron Jagdfeld, our Chief Executive Officer, modified a Rule 10b5-1 trading arrangement originally adopted on November 19, 2024, to change the amount of shares to be sold under the arrangement, the price limits for sales under the arrangement, and timing of sales under the arrangement. The modified Rule 10b5-1 trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c) and provides for (i) the sale of up to 31,303 shares of the Company’s common stock; and (ii) the exercise of stock options to acquire 13,697 shares of the Company’s common stock and the sale of those acquired shares until February 27, 2026.
Trading Arrangement, Securities Aggregate Available Amount	31,303
Non-Rule 10b5-1 Arrangement Adopted [Flag]	false
Rule 10b5-1 Arrangement Terminated [Flag]	false
Non-Rule 10b5-1 Arrangement Terminated [Flag]	false
Trading Arrangement Adoption Date	March 6, 2025
Trading Arrangement, Individual Name	Aaron Jagdfeld
Rule 10b5-1 Arrangement Adopted [Flag]	true
Trading Arrangement, Individual Title	Chief Executive Officer
Trading Arrangement Expiration Date	February 27, 2026

GENERAC HOLDINGS INC. 10-Q