Document and Entity Information	6 Months Ended
	Jan. 31, 2013	Mar. 04, 2013
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jan. 31, 2013
Current Fiscal Year End Date	--07-31
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2013
Entity Registrant Name	COMTECH TELECOMMUNICATIONS CORP /DE/
Entity Central Index Key	0000023197
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		16,821,079