Document and Entity Information	9 Months Ended
	Jan. 31, 2012	Mar. 14, 2012
Document and Entity Information [Abstract]
Entity Registrant Name	VALUE LINE INC
Entity Central Index Key	0000717720
Trading Symbol	valu
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Current Fiscal Year End Date	--04-30
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		9,896,381
Document Type	10-Q
Document Period End Date	Jan. 31, 2012
Amendment Flag	false
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q3