v3.26.1
Cover Page - shares
 3 Months Ended
Mar. 31, 2026
Jun. 18, 2026
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2026  
Document Transition Report false  
Entity File Number 001-43266  
Entity Registrant Name HawkEye 360, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 47-5078666  
Entity Address, Address Line One 450 Springpark Place  
Entity Address, Address Line Two Suite 500  
Entity Address, City or Town Herndon  
Entity Address, State or Province VA  
Entity Address, Postal Zip Code 20170  
City Area Code 571  
Local Phone Number 203-0360  
Title of 12(b) Security Common Stock, $0.0001 par value  
Trading Symbol HAWK  
Security Exchange Name NYSE  
Entity Current Reporting Status No  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Emerging Growth Company true  
Entity Small Business false  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   97,959,969
Amendment Flag false  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2026  
Current Fiscal Year End Date --12-31  
Entity Central Index Key 0001750704