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INVESTMENTS (Details) - USD ($)
$ in Thousands, shares in Millions
12 Months Ended 19 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Nov. 30, 2018
Jun. 30, 2018
INVESTMENTS (Details) [Line Items]          
Equity Securities, FV-NI $ 11,464 $ 15,187 $ 11,464    
Equity Securities, FV-NI, Cost $ 12,928 14,640 $ 12,928    
Market value of investments to Company's total assets 60.90%   60.90%    
Other investments $ 1,283 1,404 $ 1,283    
Equity Method Investments 158 309 158    
Foreign Currency Transaction Gain (Loss), before Tax 228        
Equity Securities, FV-NI, Unrealized Gain (Loss) (2,011) (2,406)      
Equity Securities without Readily Determinable Fair Value, Amount 1,283 1,404 1,283   $ 2,207
Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount 285 114      
Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Cumulative Amount 777   777    
Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Annual Amount 124 57      
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Cumulative Amount 780   780    
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount 163 617      
Income (Loss) from Equity Method Investments (142) 23      
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax (228) (22)      
Equity Securities without Readily Determinable Fair Value, Impairment Loss, Cumulative Amount 536   536    
Fair Value, Inputs, Level 1 [Member]          
INVESTMENTS (Details) [Line Items]          
Equity Securities, FV-NI $ 11,432 $ 14,355 $ 11,432    
Percentage of Financial Assets Derived From Level 1 Inputs Measured at Fair Value 100.00% 95.00% 100.00%    
Fair Value, Inputs, Level 2 [Member]          
INVESTMENTS (Details) [Line Items]          
Equity Securities, FV-NI $ 32 $ 832 $ 32    
Percentage of Financial Assets Derived From Level 2 Inputs Measured at Fair Value   5.00%      
U.S. Global Investors Funds [Member]          
INVESTMENTS (Details) [Line Items]          
Equity Securities, FV-NI 7,000 $ 8,800 $ 7,000    
Equity Securities [Member]          
INVESTMENTS (Details) [Line Items]          
Equity Securities, FV-NI, Unrealized Gain (Loss) $ (2,000)        
HIVE Blockchain Technologies Ltd. ("HIVE") [Member]          
INVESTMENTS (Details) [Line Items]          
Investment Owned, Balance, Shares (in Shares) 10   10    
Investment Owned, at Cost $ 2,400   $ 2,400    
Investment Owned, Direct Percentage 2.90%   2.90%    
HIVE Blockchain Technologies Ltd. ("HIVE") [Member] | Fair Value, Inputs, Level 1 [Member]          
INVESTMENTS (Details) [Line Items]          
Equity Securities, FV-NI $ 2,400 3,600 $ 2,400    
Thunderbird Entertainment Group [Member]          
INVESTMENTS (Details) [Line Items]          
Investment Owned, Direct Percentage 2.50%   2.50%    
Thunderbird Entertainment Group [Member] | Equity Securities [Member]          
INVESTMENTS (Details) [Line Items]          
Equity Securities, FV-NI $ 1,200 1,100 $ 1,200    
Thunderbird Entertainment Group [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]          
INVESTMENTS (Details) [Line Items]          
Equity Securities, FV-NI 1,200 377 1,200    
Thunderbird Entertainment Group [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]          
INVESTMENTS (Details) [Line Items]          
Equity Securities, FV-NI   675      
GoldSpot Discoveries, Inc. [Member] | Equity Securities [Member]          
INVESTMENTS (Details) [Line Items]          
Equity Securities, FV-NI $ 806 1,700 $ 806    
Investment Owned, Direct Percentage 7.50%   7.50%    
GoldSpot Discoveries, Inc. [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]          
INVESTMENTS (Details) [Line Items]          
Equity Securities, FV-NI $ 774 1,600 $ 774    
GoldSpot Discoveries, Inc. [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]          
INVESTMENTS (Details) [Line Items]          
Equity Securities, FV-NI 32 157 32    
Galileo Technology and Blockchain Fund [Member]          
INVESTMENTS (Details) [Line Items]          
Equity Method Investment, Aggregate Cost         $ 401
Income (Loss) from Equity Method Investments   (50)      
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax   $ (22)      
Galileo Technology and Blockchain Fund [Member] | Minimum [Member]          
INVESTMENTS (Details) [Line Items]          
Equity Method Investment, Ownership Percentage   20.00%      
Galileo Technology and Blockchain Fund [Member] | Maximum [Member]          
INVESTMENTS (Details) [Line Items]          
Equity Method Investment, Ownership Percentage   25.00%      
Galileo Technology and Blockchain Fund LP [Member]          
INVESTMENTS (Details) [Line Items]          
Equity Method Investments $ 158 $ 309 $ 158    
Equity Method Investment, Aggregate Cost       $ 230  
Equity Method Investment, Ownership Percentage 22.00%   22.00%    
Income (Loss) from Equity Method Investments $ (142) $ 73      
Galileo Technology and Blockchain Fund LP [Member] | Minimum [Member]          
INVESTMENTS (Details) [Line Items]          
Equity Method Investment, Ownership Percentage     16.00%    
Galileo Technology and Blockchain Fund LP [Member] | Maximum [Member]          
INVESTMENTS (Details) [Line Items]          
Equity Method Investment, Ownership Percentage     22.00%