Document and Entity Information - shares	3 Months Ended
	Sep. 30, 2020	Nov. 03, 2020
Cover [Abstract]
Entity Registrant Name	INTERGROUP CORP
Entity Central Index Key	0000069422
Document Type	10-Q
Document Period End Date	Sep. 30, 2020
Amendment Flag	false
Current Fiscal Year End Date	--06-30
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business Flag	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		2,283,916
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2021