Note 1 - Operations	9 Months Ended
Jun. 30, 2021
Notes to Financial Statements
Nature of Operations [Text Block]	1. OPERATIONS Genasys Inc. (formerly LRAD® Corporation), a Delaware corporation (the “Company”), is engaged in the design, development and commercialization of directed and multidirectional sound technologies, voice broadcast products, location-based mass messaging solutions for emergency warning and enterprise safety, and evacuation planning and public safety resources. The principal markets for the Company’s proprietary sound reproduction technologies, voice broadcast products mass messaging solutions and public safety resources are in North and South America, Europe, the Middle East and Asia. On October 23, 2019, the Company announced its rebranding and began doing business as Genasys Inc.

The entire disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings. For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-URI http://asc.fasb.org/topic&trid=2134479

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