Document and Entity Information (USD $)	12 Months Ended
	Jul. 31, 2014	Oct. 06, 2014	Jan. 31, 2014
Document and Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Jul. 31, 2014
Current Fiscal Year End Date	--07-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2014
Entity Registrant Name	COMTECH TELECOMMUNICATIONS CORP /DE/
Entity Central Index Key	0000023197
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		16,203,548
Entity Public Float			$ 463,137,000
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes