Consolidated Statements of Operations - USD ($)	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Revenues:
Total revenues	$ 28,658,000	$ 58,017,000
Costs and operating expenses:
Depreciation and amortization expense	(4,639,000)	(4,872,000)
General and administrative expense	(3,109,000)	(2,870,000)
Total costs and operating expenses	(33,528,000)	(53,126,000)
(Loss) income from operations	(4,870,000)	4,891,000
Other income (expense):
Interest expense - mortgage	(8,914,000)	(9,321,000)
Gain from sale of real estate	12,043,000
Gain on disposal of assets	12,000
Net gain (loss) on marketable securities	8,248,000	(1,913,000)
Net gain on marketable securities - Comstock	3,390,000
Gain on debt forgiveness	5,172,000
Loss on debt extinguishment		(687,000)
Impairment loss on other investments	(119,000)	(219,000)
Dividend and interest income	519,000	363,000
Trading and margin interest expense	(1,333,000)	(997,000)
Net other income (expense)	19,018,000	(12,774,000)
Income (loss) before income taxes	14,148,000	(7,883,000)
Income tax (expense) benefit	(3,603,000)	2,794,000
Net income (loss)	10,545,000	(5,089,000)
Less: Net (income) loss attributable to the non-controlling interest	(136,000)	1,308,000
Net income (loss) attributable to InterGroup	$ 10,409,000	$ (3,781,000)
Basic	$ 4.74	$ (2.21)
Diluted	4.12	(2.21)
Net income (loss) per share attributable to InterGroup
Basic	4.68	(1.64)
Diluted	$ 4.06	$ (1.64)
Weighted average number of common shares outstanding	2,222,919	2,300,059
Weighted average number of diluted shares outstanding	2,560,514	2,623,254
Hotel [Member]
Revenues:
Total revenues	$ 14,668,000	$ 42,839,000
Costs and operating expenses:
Total costs and operating expenses	(17,911,000)	(37,333,000)
Real Estate [Member]
Revenues:
Total revenues	13,990,000	15,178,000
Costs and operating expenses:
Total costs and operating expenses	$ (7,869,000)	$ (8,051,000)