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INVESTMENTS (Details) $ in Thousands		3 Months Ended		9 Months Ended
		Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Jun. 30, 2016 USD ($)
INVESTMENTS (Details) [Line Items]
Fair value of investments held		$ 13,244		$ 13,244		$ 13,585
Cost basis of investments held		$ 14,000		$ 14,000
Market value of investments to Company's total assets		50.90%		50.90%
Other investments		$ 2,637		$ 2,637		1,924
Available-for-sale, net unrealized gain (loss), gross		205		205		45
Available-for-sale, net unrealized gain (loss), net of tax		205		205		$ 45
Other-than-temporary impairments		0	$ 0	16	$ 259
Cost-method Investments, Other than Temporary Impairment		$ 0	0	$ 0	$ 258
Percentage of Financial Assets Derived From Level 1 Inputs Measured at Fair Value		100.00%		100.00%		100.00%
Trading Securities	[1]	$ 9,720		$ 9,720		$ 10,104
U.S. Global Investors Funds [Member]
INVESTMENTS (Details) [Line Items]
Fair value of investments held		10,700		10,700
Offshore Fund [Member]
INVESTMENTS (Details) [Line Items]
Fair value of investments held		430		430
Offshore Fund [Member] | Net Asset Value Per Share [Member]
INVESTMENTS (Details) [Line Items]
Trading Securities		$ 430		$ 430		$ 358
Minimum redmption notice				45 days
Impaired Securities [Member]
INVESTMENTS (Details) [Line Items]
Number of positions, subject to impairment loss				2	8
Available-for-Sale Securities, Combined Cost Basis of Impaired Securities				$ 98	$ 702
Available-for-Sale Securities, Combined Fair Value of Impaired Securities				$ 82	$ 466
Number of Impaired Securities Held at Cost					3
Cost Method Investments, Original Cost			1,100		$ 1,100
Cost Method Investments			$ 867		867
Impaired Securities, Net Present Value of Estimated Cash Flows [Member] | Corporate Debt Securities [Member]
INVESTMENTS (Details) [Line Items]
Available-for-Sale Securities, Combined Cost Basis of Impaired Securities					970
Available-for-Sale Securities, Combined Fair Value of Impaired Securities					$ 947
[1] Unrealized and realized gains and losses on trading securities are included in earnings in the statement of operations.

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