Document And Entity Information - USD ($)	12 Months Ended
	Apr. 30, 2023	Jun. 30, 2023	Oct. 31, 2022
Document Information [Line Items]
Entity Central Index Key	0000717720
Entity Registrant Name	VALUE LINE INC
Amendment Flag	false
Current Fiscal Year End Date	--04-30
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2023
Document Type	10-K
Document Annual Report	true
Document Period End Date	Apr. 30, 2023
Document Transition Report	false
Entity File Number	0-11306
Entity Incorporation, State or Country Code	NY
Entity Tax Identification Number	13-3139843
Entity Address, Address Line One	551 Fifth Avenue
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10176-0001
City Area Code	212
Local Phone Number	907-1500
Title of 12(b) Security	Common stock, $0.10 par value per share
Trading Symbol	VALU
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 44,153,911
Entity Common Stock, Shares Outstanding		9,431,384
Auditor Firm ID	921
Auditor Name	Horowitz & Ullmann, P.C
Auditor Location	New York, NY