CONSOLIDATED STATEMENTS OF OPERATIONS - Entity [Domain] - USD ($)	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Revenues:
Hotel	$ 56,811,000	$ 50,963,000
Real estate	15,926,000	16,332,000
Total revenues	72,737,000	67,295,000
Costs and operating expenses:
Hotel operating expenses	(47,016,000)	(40,805,000)
Hotel restructuring costs	0	(6,681,000)
Hotel occupancy tax - penalty fees	0	(1,278,000)
Real estate operating expenses	(8,237,000)	(8,982,000)
Depreciation and amortization expense	(4,943,000)	(4,723,000)
General and administrative expense	(2,859,000)	(2,168,000)
Total costs and operating expenses	(63,055,000)	(64,637,000)
Income from operations	9,682,000	2,658,000
Other income (expense):
Interest expense - mortgage	(10,153,000)	(7,986,000)
Interest expense - occupancy tax	0	(328,000)
Loss on extinguishment of debt	0	(3,910,000)
Loss on disposal of assets	(47,000)	(1,092,000)
Gain on sale of real estate	11,100,000	0
Other real estate income	458,000	0
Net (loss) gain on marketable securities	(4,652,000)	998,000
Net unrealized (loss) gain on other investments and derivatives	(204,000)	181,000
Impairment loss on other investments	(701,000)	(101,000)
Dividend and interest income	1,062,000	1,064,000
Trading and margin interest expense	(1,741,000)	(1,799,000)
Net other expense	(4,878,000)	(12,973,000)
Income (loss) before income taxes	4,804,000	(10,315,000)
Income tax (expense) benefit	(2,747,000)	3,567,000
Net income (loss)	2,057,000	(6,748,000)
Less: Net loss attributable to the noncontrolling interest	885,000	2,056,000
Net income (loss) attributable to InterGroup	$ 2,942,000	$ (4,692,000)
Net income (loss) per share
Basic (in dollars per share)	$ 0.86	$ (2.85)
Diluted (in dollars per share)	0.85	(2.85)
Net income (loss) per share attributable to InterGroup
Basic (in dollars per share)	1.23	(1.98)
Diluted (in dollars per share)	$ 1.21	$ (1.98)
Weighted average number of common shares outstanding (in shares)	2,384,521	2,368,861
Weighted average number of diluted common shares outstanding (in shares)	2,432,741	2,368,861