Quarterly report pursuant to Section 13 or 15(d)


Cover - shares
9 Months Ended
Sep. 30, 2021
Nov. 08, 2021
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2021  
Document Transition Report false  
Entity File Number 001-36467  
Entity Registrant Name RESONANT INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 45-4320930  
Entity Address, Address Line One 10900 Stonelake Blvd, Suite 100, Office 02-130  
Entity Address, City or Town Austin  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 78759  
City Area Code 805  
Local Phone Number 308-9803  
Title of 12(b) Security Common Stock, $0.001 par value  
Trading Symbol RESN  
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   65,710,592
Entity Central Index Key 0001579910  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q3  
Amendment Flag false