v2.4.0.6
Document and Entity Information
3 Months Ended
Jul. 31, 2011
Sep. 09, 2011
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jul. 31, 2011  
Document Fiscal Year Focus 2012  
Document Fiscal Period Focus Q1  
Trading Symbol FEIM  
Entity Registrant Name FREQUENCY ELECTRONICS INC  
Entity Central Index Key 0000039020  
Current Fiscal Year End Date --04-30  
Entity Filer Category Smaller Reporting Company  
Entity Common Stock, Shares Outstanding   8,310,907