CONSOLIDATED STATEMENTS OF SHAREHOLDERS' DEFICIT - USD ($)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]	InterGroup Shareholders' Deficit [Member]	Noncontrolling Interest [Member]
Beginning Balance at Jun. 30, 2016	$ (73,247,000)	$ 33,000	$ 10,363,000	$ (43,645,000)	$ (12,082,000)	$ (45,331,000)	$ (27,916,000)
Beginning Balance (in shares) at Jun. 30, 2016		3,395,616
Net income	(1,676,000)	$ 0	0	(1,653,000)	0	(1,653,000)	(23,000)
Stock options expense	268,000	0	268,000	0	0	268,000	0
Investment in Santa Fe	(83,000)	0	(188,000)	0	0	(188,000)	105,000
Investment in Portsmouth	(36,000)	0	(97,000)	0	0	(97,000)	61,000
Purchase of treasury stock	(544,000)	0	0	0	(544,000)	(544,000)	0
Ending Balance at Jun. 30, 2017	(75,318,000)	$ 33,000	10,346,000	(45,298,000)	(12,626,000)	(47,545,000)	(27,773,000)
Ending Balance (in shares) at Jun. 30, 2017		3,395,616
Net income	5,813,000	$ 0	0	4,081,000	0	4,081,000	1,732,000
Stock options expense	184,000	0	184,000	0	0	184,000	0
Investment in Santa Fe	(4,000)	0	(8,000)	0	0	(8,000)	4,000
Purchase of treasury stock	(642,000)	0	0	0	(642,000)	(642,000)	0
Ending Balance at Jun. 30, 2018	$ (69,967,000)	$ 33,000	$ 10,522,000	$ (41,217,000)	$ (13,268,000)	$ (43,930,000)	$ (26,037,000)
Ending Balance (in shares) at Jun. 30, 2018		3,395,616