Document and Entity Information	9 Months Ended
	Apr. 30, 2012	Jun. 04, 2012
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Apr. 30, 2012
Current Fiscal Year End Date	--07-31
Document Fiscal Period Focus	Q3
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		17,959,963