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Significant Accounting Policies (Policies) | 9 Months Ended
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Jun. 30, 2020
Accounting Policies [Abstract] |
Basis of Accounting, Policy [Policy Text Block] | General The Company's unaudited interim condensed consolidated financial statements included herein have been prepared in accordance with the instructions to Form 10 -Q and Article 8 of Regulation S- X and the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles have been condensed or omitted pursuant to such rules and regulations. In management's opinion, the accompanying statements reflect adjustments necessary to present fairly the financial position, results of operations, and cash flows for those periods indicated, and contain adequate disclosure to make the information presented not misleading. Adjustments included herein are of a normal, recurring nature unless otherwise disclosed in the footnotes. The condensed consolidated financial statements and notes thereto should be read in conjunction with the Company's audited financial statements and notes thereto for the year ended September 30, 2019 included in the Company's Annual Report on Form 10 -K, as filed with the SEC on December 10, 2019. The accompanying condensed consolidated balance sheet at September 30, 2019 has been derived from the audited consolidated balance sheet at September 30, 2019 contained in the above referenced Form 10 -K. Results of operations for interim periods are not necessarily indicative of the results of operations for a full year.
Consolidation, Policy [Policy Text Block] | Principles of Consolidation The Company has three wholly owned subsidiaries, Genasys II Spain, S.A.U. (“Genasys Spain”) and two currently inactive subsidiaries, Genasys America de CV and LRAD International Corporation. The condensed consolidated financial statements include the accounts of these subsidiaries after elimination of intercompany transactions and accounts.
Reclassification, Comparability Adjustment [Policy Text Block] | Reclassifications Where necessary, the prior year's information has been reclassified to conform to the current year presentation.

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- Definition Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). + References No definition available. + Details
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- Definition Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109239629&loc=d3e5614-111684 + Details
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- Definition Disclosure of accounting policy for reclassification affecting comparability of financial statement. Excludes amendment to accounting standards, other change in accounting principle, and correction of error. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6359566&loc=d3e326-107755 + Details
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