v3.26.1
Cover - shares
9 Months Ended
Apr. 30, 2026
Jun. 11, 2026
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Apr. 30, 2026  
Document Transition Report false  
Entity File Number 0-7928  
Entity Registrant Name COMTECH TELECOMMUNICATIONS CORP /DE/  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 11-2139466  
Entity Address, Address Line One 305 N 54th Street  
Entity Address, City or Town Chandler  
Entity Address, State or Province AZ  
Entity Address, Postal Zip Code 333-2200  
City Area Code (480)  
Local Phone Number 333-2200  
Title of 12(b) Security Common Stock, par value $0.10 per share  
Trading Symbol CMTL  
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   29,961,431
Amendment Flag false  
Current Fiscal Year End Date --07-31  
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2026  
Entity Central Index Key 0000023197