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Note 4 - Redeemable Noncontrolling Interests (Details Textual) - USD ($) $ in Thousands				1 Months Ended		12 Months Ended
	Apr. 05, 2024	Mar. 08, 2023	Feb. 01, 2019	May 31, 2022	May 31, 2021	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Sep. 30, 2025	Aug. 07, 2025	Mar. 01, 2016
Payments for Repurchase of Redeemable Noncontrolling Interest						$ (0)	$ 9,117	$ 104,844
Generac Juffali Generators WLL [Member]
Joint Venture Formation, Funded by Non-controlling Interest, Percent									49.00%
Pramac [Member]
Business Combination, Voting Equity Interest Acquired, Percentage					15.00%						65.00%
Redeemable Noncontrolling Interest, Equity, Fair Value											$ 34,253
Payments for Repurchase of Redeemable Noncontrolling Interest		$ 116,754			$ 27,164
Business Combination, Achieved in Stages, Preacquisition and Acquired Equity Interests in Acquiree, Percentage		100.00%			80.00%
Business Combination, Consideration Transferred		$ 105,264
Payments to Acquire Businesses, Gross		104,844
Gain (Loss), Foreign Currency Transaction, before Tax		420
Business Combination, Consideration Transferred, Liabilities Incurred		$ 11,490
Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares (in shares)		135,205
Captiva Energy Solutions [Member]
Business Combination, Voting Equity Interest Acquired, Percentage	34.00%		51.00%	15.00%
Redeemable Noncontrolling Interest, Equity, Fair Value			$ 3,165
Payments for Repurchase of Redeemable Noncontrolling Interest	$ 9,117			$ 375
Business Combination, Achieved in Stages, Preacquisition and Acquired Equity Interests in Acquiree, Percentage				66.00%
Business Acquisition, Noncontrolling Interest, Term of Put Option (Year)			5 years
Generac Juffali Generators WLL [Member]
Subsidiary, Ownership Percentage, Parent										51.00%
E.A. Juffali and Brothers [Member]
Subsidiary, Ownership Percentage, Noncontrolling Owner										49.00%
Joint Venture Formation, Fair Value of Joint Venture										$ 979
Pramac [Member]
Subsidiary, Ownership Percentage, Noncontrolling Owner		20.00%									35.00%
Captiva Energy Solutions [Member]
Subsidiary, Ownership Percentage, Noncontrolling Owner			49.00%

X

- Definition

The term of a put option available to the noncontrolling interest of a business acquired by the reporting entity.

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The percent value of the amount of the joint venture funded by the other party.

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Number of shares of equity interest issued or issuable by acquirer as part of consideration transferred in business combination.

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Percentage of voting equity interest acquired in business combination.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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Percentage of voting equity interests acquired in a business combination achieved in stages, including equity interests in the acquiree held by the acquirer immediately before the acquisition date and acquired at the acquisition date.

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Amount, before tax, of realized and unrealized gain (loss) from foreign currency transaction.

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Fair value of joint venture at its formation date.

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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The cash outflow during the period for redemption of redeemable noncontrolling interests.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The aggregate fair value as of the reporting date of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

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