Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information
6 Months Ended
Sep. 30, 2012
Oct. 16, 2012
Class A Common Stock
Oct. 16, 2012
Class B Common Stock
Entity Registrant Name WESTELL TECHNOLOGIES INC    
Entity Central Index Key 0001002135    
Document Type 10-Q    
Document Period End Date Sep. 30, 2012    
Amendment Flag false    
Document Fiscal Year Focus 2013    
Document Fiscal Period Focus Q2    
Current Fiscal Year End Date --03-31    
Entity Filer Category Accelerated Filer    
Entity Common Stock, Shares Outstanding   45,868,505 13,937,151
Trading Symbol wstl