Document and Entity Information	3 Months Ended
	Oct. 31, 2011	Dec. 05, 2011
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Oct. 31, 2011
Current Fiscal Year End Date	--07-31
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2012
Entity Registrant Name	COMTECH TELECOMMUNICATIONS CORP /DE/
Entity Central Index Key	0000023197
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		20,344,330