Business and Significant Accounting Policies and Practices (Details Narrative) - USD ($)			12 Months Ended
	Sep. 28, 2018	Feb. 03, 2017	Jun. 30, 2020	Jun. 30, 2019
Agreement description			Justice entered into a Hotel management agreement ("HMA") with Interstate Management Company, LLC ("Interstate") to manage the Hotel, along with its five-level parking garage, with an effective takeover date of February 3, 2017. The term of the management agreement is for an initial period of ten years commencing on the takeover date and automatically renews for successive one (1) year periods, to not exceed five years in the aggregate, subject to certain conditions. Under the terms of the HMA, base management fee payable to Interstate shall be one and seven-tenths percent (1.70%) of total Hotel revenue. The HMA also provides for Interstate to advance a key money incentive fee to the Hotel for capital improvements in the form of a self-exhausting, interest free note payable in the amount of $2,000,000 in a separate key money agreement. As of June 30, 2020 and 2019, balance of the key money including accrued interests are $1,009,000 and $2,049,000, respectively, and are included in restricted cash in the consolidated balance sheets. As of June 30, 2020 and 2019, balance of the unamortized portion of the key money are $1,646,000 and $1,896,000, respectively, and are included in the related party notes payable in the consolidated balance sheets. On October 25, 2019, Interstate merged with Aimbridge Hospitality, North America's largest independent hotel management firm. With the completion of the merger, the newly combined company will be positioned under the Aimbridge Hospitality name in the Americas.
Bears interest percentage	4.75%
Accrued interests			$ 1,009,000	$ 2,049,000
Unamortized portion amount			1,646,000	1,896,000
Impairment losses related to other investments			219,000	98,000
Allowance for impairment losses			$ 6,270,000	6,367,000
Asset amortized life			15 years
Allowance for doubtful accounts			$ 79,000	$ 71,000
Acquisition of treasury stock			21,153	33,601
Advertising cost			$ 176,000	$ 282,000
Buildings Improvements [Member] | Minimum [Member]
Estimated useful lives			3 years
Buildings Improvements [Member] | Maximum [Member]
Estimated useful lives			39 years
Furniture And Fixtures [Member] | Minimum [Member]
Estimated useful lives			3 years
Furniture And Fixtures [Member] | Maximum [Member]
Estimated useful lives			7 years
Rental Property [Member] | Minimum [Member]
Estimated useful lives			5 years
Rental Property [Member] | Maximum [Member]
Estimated useful lives			40 years
Building and Improvements [Member] | Minimum [Member]
Estimated useful lives			5 years
Building and Improvements [Member] | Maximum [Member]
Estimated useful lives			10 years
Mortgage Note Payable [Member]
Bears interest percentage		1.70%
Interest free note payable amount		$ 2,000,000
Portsmouth [Member]
Ownership interest percentage			68.80%
Portsmouth [Member] | InterGroup [Member]
Ownership interest percentage			93.30%
InterGroup [Member]
Ownership interest percentage			13.70%
Mr. Winfield [Member]
Potentially dilutive securities outstanding			323,195
Santa Fe [Member]
Power to vote percentage interest			87.40%
Santa Fe [Member] | Chairman and CEO [Member]
Power to vote percentage interest			3.70%