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INVESTMENTS (Details) - USD ($) $ in Thousands, shares in Millions | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2019 | Jun. 30, 2018 | Nov. 30, 2018 | Sep. 30, 2017
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |
Equity Securities, FV-NI |  | $ 15,187 | $ 15,187 |  |  |
Equity Securities, FV-NI, Cost |  | $ 14,640 | $ 14,640 |  |  |
Market value of investments to Company's total assets |  | 64.00% | 64.00% |  |  |
Other investments |  | $ 1,404 | $ 1,404 | $ 2,207 |  |
Available-for-sale, net unrealized gain (loss), gross |  |  |  | 3,138 |  |
Available-for-sale, net unrealized gain (loss), net of tax |  |  |  | 2,089 |  |
Trading Securities, Realized Gain (Loss) |  |  |  | (736) |  |
Available-for-sale Securities, Gross Realized Gain (Loss), Excluding Other than Temporary Impairments |  |  |  | 669 |  |
Trading Securities, Change in Unrealized Holding Gain (Loss) |  |  |  | 742 |  |
Equity Securities, FV-NI, Unrealized Gain (Loss) | [1] |  | (2,406) | 742 |  |
Proceeds from Sale of Available-for-sale Securities |  |  | $ 0 | 2,130 |  |
Available-for-sale Securities, Gross Realized Gains |  |  |  | 675 |  |
Available-for-sale Securities, Gross Realized Losses |  |  |  | $ 6 |  |
Percentage of Financial Assets Derived From Level 1 Inputs Measured at Fair Value |  | 95.00% | 95.00% | 100.00% |  |
Percentage of Financial Assets Derived From Level 2 Inputs Measured at Fair Value |  | 5.00% | 5.00% |  |  |
Available-for-sale securities, fair value | [2],[3] |  |  | $ 7,086 |  |
Equity Securities without Readily Determinable Fair Value, Amount |  | $ 1,404 | $ 1,404 | 2,207 |  |
Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount |  |  | 114 | 0 |  |
Equity Securities without Readily Determinable Fair Value, Impairment Loss, Cumulative Amount |  | 251 | 251 |  |  |
Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Cumulative Amount |  | 652 | 652 |  |  |
Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Annual Amount |  |  | 57 |  |  |
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount |  | 617 | 617 | 0 |  |
Income (Loss) from Equity Method Investments |  |  | 23 | 1,624 |  |
Equity Method Investments |  | 309 | 309 | 283 |  |
Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |
Equity Securities, FV-NI |  | 14,355 | 14,355 |  |  |
Available-for-sale securities, fair value |  |  |  | 7,086 |  |
Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |
Equity Securities, FV-NI |  | $ 832 | 832 |  |  |
Available-for-sale securities, fair value |  |  |  | 0 |  |
Equity Securities [Member] |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |
Equity Securities, FV-NI, Unrealized Gain (Loss) |  |  | $ (1,800) |  |  |
Corporate Debt Securities [Member] |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |
Proceeds from Sale of Debt Securities, Available-for-sale |  |  |  | 1,700 |  |
Debt Securities, Available-for-sale, Realized Gain |  |  |  | 638 |  |
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 |  | $ 1,100 | $ 1,100 |  |  |
Other Investments |  |  |  | 1,500 |  |
Thunderbird Entertainment Group [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |
Equity Securities, FV-NI |  | 377 | 377 |  |  |
Thunderbird Entertainment Group [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |
Equity Securities, FV-NI |  | 675 | 675 |  |  |
GoldSpot Discoveries, Inc. [Member] |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |
Equity Securities, FV-NI |  | $ 1,700 | $ 1,700 |  |  |
Investment Owned, Direct Percentage |  | 7.50% | 7.50% |  |  |
GoldSpot Discoveries, Inc. [Member] | Equity Securities [Member] |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |
Equity Securities, FV-NI |  | $ 1,700 | $ 1,700 |  |  |
GoldSpot Discoveries, Inc. [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |
Equity Securities, FV-NI |  | 1,600 | 1,600 |  |  |
GoldSpot Discoveries, Inc. [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |
Equity Securities, FV-NI |  | $ 157 | 157 |  |  |
Galileo Partners Fund [Member] |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |
Equity Method Investment, Aggregate Cost |  |  |  | 500 |  |
Income (Loss) from Equity Method Investments |  |  |  | 1,700 |  |
Galileo Technology and Blockchain Fund [Member] |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |
Equity Method Investment, Aggregate Cost |  |  |  | 401 |  |
Income (Loss) from Equity Method Investments |  |  | $ (50) | $ (99) |  |
Galileo Technology and Blockchain Fund [Member] | Minimum [Member] |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  | 20.00% | 20.00% |  |  |
Galileo Technology and Blockchain Fund [Member] | Maximum [Member] |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  | 25.00% | 25.00% |  |  |
Galileo Technology and Blockchain Fund LP [Member] |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |
Equity Method Investment, Aggregate Cost |  |  |  |  | $ 230 |
Income (Loss) from Equity Method Investments |  |  | $ 73 |  |  |
Equity Method Investment, Ownership Percentage |  | 20.00% | 20.00% |  |  |
Equity Method Investments |  | $ 309 | $ 309 |  |  |
HIVE Blockchain Technologies Ltd. ("HIVE") [Member] |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |
Investment Owned, Balance, Shares (in Shares) |  | 10 | 10 | 10 |  | 10
Investment Owned, at Cost |  |  |  | $ 2,400 |  |
Investment Owned, Direct Percentage |  | 3.10% | 3.10% |  |  |
HIVE Blockchain Technologies Ltd. ("HIVE") [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
INVESTMENTS (Details) [Line Items] |  |  |  |  |  |
Equity Securities, FV-NI |  | $ 3,600 | $ 3,600 |  |  |
Available-for-sale securities, fair value |  |  |  | $ 5,600 |  |
[1] | The prior year amounts shown include $742 in unrealized gains on trading securities for the year ended June 30, 2018 (classification used prior to the adoption of ASU 2016-01 effective July 1, 2018).
[2] | Net unrealized gains on available-for-sale securities gross and net of tax as of June 30, 2018, were $3,138 and $2,089, respectively.
[3] | Prior to July 1, 2018, changes in unrealized gains and losses on available-for-sale securities were excluded from earnings and recorded in other comprehensive income as a separate component of shareholders' equity until realized.

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