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Goodwill and Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024	Sep. 30, 2024
Goodwill [Line Items]
Goodwill, Gross	$ 13,257		$ 13,257		$ 13,329
Goodwill, acquired during period			0
Impairment of goodwill			0
Amortization of Intangible Assets	$ 584	$ 619	1,202	$ 1,239
Genasys Spain [Member]
Goodwill [Line Items]
Goodwill and Intangible Assets, Foreign Currency Translation Gain (Loss)			$ 75
Evertel Technologies, LLC [Member]
Goodwill [Line Items]
Goodwill, acquired during period				$ 2,923

X

- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) goodwill and intangible assets.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount, before 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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