Goodwill and Intangibles - Schedule of Represents Goodwill Activity (Detail) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill Beginning Balance	$ 20,805	$ 20,291	$ 19,701
Impact of movement in exchange rates	235	514	590
Goodwill Ending Balance	$ 21,040	$ 20,805	$ 20,291

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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AMERICAN VANGUARD CORP 10-Q