Cover - USD ($)	12 Months Ended
	Jun. 30, 2023	Oct. 13, 2023	Dec. 31, 2022
Cover [Abstract]
Document Type	10-K/A
Amendment Flag	true
Amendment Description	We are filing this Amendment No. 1 to our Form 10-K filed on October 16, 2023 to include all required IXBRL files.
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Jun. 30, 2023
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2023
Current Fiscal Year End Date	--06-30
Entity File Number	1-10324
Entity Registrant Name	THE INTERGROUP CORPORATION
Entity Central Index Key	0000069422
Entity Tax Identification Number	13-3293645
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	1516 S. Bundy Drive
Entity Address, Address Line Two	Suite 200
Entity Address, City or Town	Los Angeles
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	90025
City Area Code	(310)
Local Phone Number	889-2500
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	INTG
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	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 31,358,000
Entity Common Stock, Shares Outstanding		2,205,927
Documents Incorporated by Reference [Text Block]	None
Document Financial Statement Error Correction [Flag]	false
Auditor Name	WithumSmith+Brown, PC
Auditor Location	East Brunswick, NJ
Auditor Firm ID	100