Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Revenues:
Total revenues	$ 6,367,000	$ 15,016,000	$ 19,939,000	$ 52,902,000
Costs and operating expenses:
Depreciation and amortization expenses	(1,127,000)	(1,216,000)	(3,499,000)	(3,661,000)
General and administrative expenses	(605,000)	(890,000)	(2,531,000)	(2,231,000)
Total costs and operating expenses	(7,765,000)	(14,237,000)	(26,217,000)	(45,140,000)
(Loss) income from operations	(1,398,000)	779,000	(6,278,000)	7,762,000
Other income (expense):
Interest expense - mortgages	(2,180,000)	(2,251,000)	(6,736,000)	(6,978,000)
Gain from sale of real estate			12,043,000
Net gain (loss) on marketable securities	768,000	(2,367,000)	4,016,000	(2,565,000)
Net gain (loss) on marketable securities - Comstock	4,870,000	(26,000)	4,921,000	(396,000)
Gain on extinguishment of debt	453,000		453,000
Impairment loss on other investments	(30,000)	(103,000)	(119,000)	(103,000)
Dividend and interest income	158,000	105,000	363,000	346,000
Trading and margin interest expense	(362,000)	(256,000)	(918,000)	(790,000)
Total other income (expense), net	3,677,000	(4,898,000)	14,023,000	(10,486,000)
Income before income taxes	2,279,000	(4,119,000)	7,745,000	(2,724,000)
Income tax (expense) benefit	(880,000)	1,060,000	(2,590,000)	689,000
Net income (loss)	1,399,000	(3,059,000)	5,155,000	(2,035,000)
Less: Net loss attributable to the noncontrolling interest	(289,000)	479,000	440,000	39,000
Net income (loss) attributable to InterGroup Corporation	$ 1,110,000	$ (2,580,000)	$ 5,595,000	$ (1,996,000)
Basic	$ 0.62	$ (1.33)	$ 2.26	$ (0.88)
Diluted	0.54		1.97
Net income per share attributable to InterGroup Corporation
Basic	0.49	(1.12)	2.46	(0.87)
Diluted	$ 0.43		$ 2.14
Weighted average number of basic common shares outstanding	2,267,115	2,298,064	2,276,220	2,303,421
Weighted average number of diluted common shares outstanding	2,604,710		2,613,815
Hotel [Member]
Revenues:
Total revenues	$ 2,902,000	$ 11,259,000	$ 9,436,000	$ 41,589,000
Costs and operating expenses:
Total costs and operating expenses	(3,990,000)	(10,060,000)	(14,156,000)	(33,138,000)
Real Estate [Member]
Revenues:
Total revenues	3,465,000	3,757,000	10,503,000	11,313,000
Costs and operating expenses:
Total costs and operating expenses	$ (2,043,000)	$ (2,071,000)	$ (6,031,000)	$ (6,110,000)