XML 52 R1.htm IDEA: XBRL DOCUMENT v3.2.0.727
Document and Entity Information - shares
 3 Months Ended
Jul. 31, 2015
Aug. 25, 2015
Document and Entity Information [Abstract]    
Entity Registrant Name VALUE LINE INC  
Entity Central Index Key 0000717720  
Trading Symbol valu  
Current Fiscal Year End Date --04-30  
Entity Filer Category Non-accelerated Filer  
Entity Common Stock, Shares Outstanding   9,793,025
Document Type 10-Q  
Document Period End Date Jul. 31, 2015  
Amendment Flag false  
Document Fiscal Year Focus 2016  
Document Fiscal Period Focus Q1