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Note 1 - Operations | 12 Months Ended
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Sep. 30, 2018
Notes to Financial Statements |
Nature of Operations [Text Block] | 1. OPERATIONS LRAD ® Corporation, a Delaware corporation (the “Company”), is engaged in the design, development and commercialization of directed and multidirectional sound technologies, voice broadcast products, and location-based mass messaging solutions for emergency warning and workforce management. The principal markets for the Company’s proprietary sound reproduction technologies, voice broadcast products and mass messaging solutions are in North and South America, Europe, Middle East and Asia. On January 18, 2018, the Company acquired all of the issued and outstanding shares of capital stock of Genasys Holdings, S.L. and its subsidiaries (“Genasys”), pursuant to a Stock Purchase Agreement, dated January 18, 2018. Genasys is a leading software provider of advanced location-based mass messaging solutions for emergency warning systems and workforce management. See Note 4, Acquisition, for additional information about this transaction.

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- Definition 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. + References 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 + Details
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