XML 12 R1.htm IDEA: XBRL DOCUMENT v3.22.0.1
Document And Entity Information - shares
 3 Months Ended
Dec. 31, 2021
Feb. 03, 2022
Document Information [Line Items]    
Entity Central Index Key 0000924383  
Entity Registrant Name Genasys Inc.  
Amendment Flag false  
Current Fiscal Year End Date --09-30  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2022  
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Dec. 31, 2021  
Document Transition Report false  
Entity File Number 000-24248  
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  
Entity Address, Postal Zip Code 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   36,407,072