Document And Entity Information - shares	6 Months Ended
	Mar. 31, 2024	May 10, 2024
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	000-24248
Entity Registrant Name	GENASYS INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	87-0361799
Entity Address, Address Line One	16262 West Bernardo Drive
Entity Address, City or Town	San Diego
Entity Address, State or Province	CA
16262 West Bernardo Drive, San Diego, California	92127
City Area Code	858
Local Phone Number	676-1112
Title of 12(b) Security	Common stock, $0.00001 par value per share
Trading Symbol	GNSS
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		44,594,562
Entity Central Index Key	0000924383
Current Fiscal Year End Date	--09-30
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Amendment Flag	false