Document and Entity Information - shares	3 Months Ended
	Jun. 25, 2017	Jul. 28, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	TESSCO TECHNOLOGIES INC
Entity Central Index Key	0000927355
Current Fiscal Year End Date	--04-01
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		8,370,900
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 25, 2017