Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information
3 Months Ended
Jun. 30, 2014
Jul. 21, 2014
Class A Common Stock
Jul. 21, 2014
Class B Common Stock
Document Type 10-Q    
Amendment Flag false    
Document Period End Date Jun. 30, 2014    
Document Fiscal Year Focus 2015    
Document Fiscal Period Focus Q1    
Entity Registrant Name WESTELL TECHNOLOGIES INC    
Entity Central Index Key 0001002135    
Current Fiscal Year End Date --03-31    
Entity Filer Category Accelerated Filer    
Entity Common Stock, Shares Outstanding   46,209,317 13,937,151