v3.26.1
Cover Page - shares
6 Months Ended
Jun. 30, 2026
Jul. 31, 2026
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Transition Report false  
Entity File Number 001-36343  
Entity Registrant Name A10 NETWORKS, INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 20-1446869  
Entity Address, Address Line One 2300 Orchard Parkway  
Entity Address, City or Town San Jose  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 95131  
City Area Code 408  
Local Phone Number 325-8668  
Title of 12(b) Security Common Stock, par value $0.00001 per share  
Trading Symbol ATEN  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   72,609,021
Amendment Flag false  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Entity Central Index Key 0001580808  
Current Fiscal Year End Date --12-31