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INVESTMENTS (Details) $ / shares in Units, $ in Thousands, shares in Millions |  | 3 Months Ended | 9 Months Ended | 40 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jan. 12, 2021 USD ($) | Mar. 31, 2022 USD ($) $ / shares | Mar. 31, 2021 USD ($) | Mar. 31, 2022 USD ($) $ / shares | Mar. 31, 2021 USD ($) | Mar. 31, 2022 USD ($) $ / shares | Mar. 31, 2022 $ / shares | Jun. 30, 2021 USD ($) shares
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |  |  |  |
Securities, Fair Value |  |  | $ 25,184 |  | $ 25,184 |  | $ 25,184 |  | $ 35,307
Investments, Current and Noncurrent, Cost |  |  | $ 22,400 |  | $ 22,400 |  | $ 22,400 |  |
Market value of investments to Company's total assets |  |  | 40.30% |  | 40.30% |  | 40.30% |  |
Other investments |  |  | $ 4,208 |  | $ 4,208 |  | $ 4,208 |  | 3,453
Debt Securities, Held-to-Maturity, Fair Value, Noncurrent |  |  | 1,000 |  | 1,000 |  | 1,000 |  |
Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Fair Value |  |  | 12,706 |  | 12,706 |  | 12,706 |  |
Realized Gain (Loss) on Principal Payment Proceeds |  |  | 524 | $ 552 | 1,694 | $ 552 |  |  |
Equity Securities without Readily Determinable Fair Value, Amount |  |  | 4,208 | 2,940 | 4,208 | 2,940 | 4,208 |  | 3,500
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Cumulative Amount |  |  | 2,500 |  | 2,500 |  | 2,500 |  |
Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Cumulative Amount |  |  | 1,500 |  | 1,500 |  | 1,500 |  |
Other Investments | [1] |  | 362 |  | 362 |  | 362 |  | 2,554
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount |  |  | 187 | 1,156 | 187 | 1,156 |  |  |
Income (Loss) from Equity Method Investments |  |  | (173) | (64) | (206) | 420 |  |  |
Equity Method Investments |  |  | 0 |  | 0 |  | 0 |  | 532
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax |  |  | 10 | 0 | 10 | 0 |  |  |
Equity Securities Without Readily Determinable Fair Values Unrealized Gain (Loss) |  |  | 187 | 1,100 | (187) | 1,000 |  |  |
Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |  |  |  |
Securities, Fair Value |  |  | 17,464 |  | 17,464 |  | 17,464 |  | 25,075
Other Investments | [1] |  | 362 |  | 362 |  | 362 |  | 2,554
Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |  |  |  |
Securities, Fair Value |  |  | 7,720 |  | 7,720 |  | 7,720 |  | 10,097
Other Investments | [1] |  | 0 |  | 0 |  | 0 |  | 0
HIVE Blockchain Technologies Ltd. ("HIVE") [Member] | Fair Value, Inputs, Level 3 [Member] | Warrants and Convertible Debt [Member] |  |  |  |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |  |  |  |
Securities, Fair Value |  |  | 17,500 |  | 17,500 |  | $ 17,500 |  | 25,100
Galileo New Economy Fund LP [Member] |  |  |  |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |  |  |  |
Income (Loss) from Equity Method Investments |  |  | (173) | (64) | (206) | $ 420 |  |  |
Equity Method Investments |  |  |  |  |  |  |  |  | 532
Galileo New Economy Fund LP [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  | 22.00% |  |
Galileo New Economy Fund LP [Member] | Cash [Member] |  |  |  |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from Equity Method Investment, Distribution, Return of Capital |  |  | 85 |  |  |  |  |  |
Galileo New Economy Fund LP [Member] | Common Shares [Member] |  |  |  |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from Equity Method Investment, Distribution, Return of Capital |  |  | 228 |  |  |  |  |  |
Securities Investment [Member] | HIVE Blockchain Technologies Ltd. ("HIVE") [Member] |  |  |  |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |  |  |  |
Investment Owned, at Cost |  | $ 15,000 |  |  |  |  |  |  |
Debt Securities [Member] |  |  |  |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value |  |  | $ 12,706 |  | $ 12,706 |  | $ 12,706 |  | $ 17,049
Debt Securities [Member] | HIVE Blockchain Technologies Ltd. ("HIVE") [Member] |  |  |  |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  | 8.00%
Debt Instrument, Convertible, Conversion Price (in Dollars per share) | $ / shares |  |  | $ 2.34 |  | $ 2.34 |  | $ 2.34 |  |
Investment Owned, Balance, Principal Amount |  |  | $ 11,300 |  | $ 11,300 |  | $ 11,300 |  | $ 14,300
Debt Securities, Available-for-Sale, Unrealized Gain |  | 6,900 |  |  |  |  |  |  |
Realized Gain (Loss) on Principal Payment Proceeds |  |  | 524 | $ 552 | 1,700 |  |  |  |
Debt Securities, Available-for-Sale, Unrealized Gain (Loss) |  |  |  |  | 4,000 |  |  |  |
Debt Securities [Member] | HIVE Blockchain Technologies Ltd. ("HIVE") [Member] | Fair Value, Inputs, Level 3 [Member] | Debentures [Member] |  |  |  |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |  |  |  |
Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Fair Value |  | 16,000 |  |  |  |  |  |  |
Equity Securities [Member] |  |  |  |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value |  |  | 4,758 |  | $ 4,758 |  | 4,758 |  | $ 8,026
Equity Securities [Member] | HIVE Blockchain Technologies Ltd. ("HIVE") [Member] |  |  |  |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |  |  |  |
Investment, Common Share Purchase Warrants (in Shares) | shares |  |  |  |  |  |  |  |  | 5
Warrant, Description |  |  |  |  | Each whole warrant, expiring in January 2024, entitles the Company to acquire one common share at a price of $3.00 (Canadian). |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per share) | $ / shares |  |  |  |  |  |  |  | $ 3 |
Equity Securities [Member] | HIVE Blockchain Technologies Ltd. ("HIVE") [Member] | Fair Value, Inputs, Level 3 [Member] | Warrant [Member] |  |  |  |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |  |  |  |
Equity Securities, FV-NI, Cost |  | $ 5,900 |  |  |  |  |  |  |
Equity Securities [Member] | Thunderbird Entertainment Group [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |  |  |  |
Equity Securities, FV-NI, Current |  |  |  |  |  |  |  |  | $ 2,700
Equity Securities, FV-NI, Realized Gain |  |  |  |  | $ 1,900 |  |  |  |
U.S. Global Investors Funds [Member] |  |  |  |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |  |  |  |
Equity Securities, FV-NI, Current |  |  | 7,000 |  | 7,000 |  | 7,000 |  | 7,300
Other Investments [Member] | The Sonar Company (“Sonar”) [Member] |  |  |  |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |  |  |  |
Equity Securities without Readily Determinable Fair Value, Amount |  |  | 362 |  | 362 |  | 362 |  |
Other Investments and Securities, at Cost |  |  | 175 |  | $ 175 |  | $ 175 |  |
Other Investments |  |  |  |  |  |  |  |  | $ 100
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount |  |  | $ 187 |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  | 3.70% |  |  |  |  |  |
[1] | Other investments include equity securities without readily determinable fair values that were adjusted as a result of the measurement alternative on dates during the fiscal year ended June 30, 2021. These securities are classified as level 3 due to the infrequency of the observable price changes and/or restrictions on the shares.

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