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INVESTMENTS (Details)
$ in Thousands, shares in Millions

12 Months Ended

Jun. 30, 2018

USD ($)

shares

Jun. 30, 2017

USD ($)

INVESTMENTS (Details) [Line Items]

Fair value of investments held

$ 15,265

$ 13,121

Cost basis of investments held

$ 12,313

13,588

Market value of investments to Company's total assets

52.80%

Other investments

$ 2,207

2,130

Equity Method Investments

283

0

Available-for-sale, net unrealized gain (loss), gross

3,138

461

Available-for-sale, net unrealized gain (loss), net of tax

2,089

461

Available-for-sale securities, fair value

^[1],[2]

7,086

3,401

Proceeds from Sale of Available-for-sale Securities

2,130

649

Available-for-sale Securities, Gross Realized Gains

675

34

Available-for-sale Securities, Gross Realized Losses

6

3

Other-than-temporary impairments

0

411

Cost-method Investments, Other than Temporary Impairment

$ 0

$ 72

Percentage of Financial Assets Derived From Level 1 Inputs Measured at Fair Value

100.00%

100.00%

Debt Securities, Trading, and Equity Securities, FV-NI

^[3],[4]

$ 8,179

$ 9,720

Income (Loss) from Equity Method Investments

1,624

0

Corporate Debt Securities [Member]

INVESTMENTS (Details) [Line Items]

Available for Sale Securities, Par Value

1,700

Available-for-sale securities, fair value

^[2]

0

1,469

Debt Securities, Available-for-sale, Realized Gain

638

Fair Value, Inputs, Level 1 [Member]

INVESTMENTS (Details) [Line Items]

Fair value of investments held

15,265

12,706

Available-for-sale securities, fair value

7,086

3,401

Debt Securities, Trading, and Equity Securities, FV-NI

^[3]

8,179

9,305

Fair Value, Inputs, Level 1 [Member] | Corporate Debt Securities [Member]

INVESTMENTS (Details) [Line Items]

Available-for-sale securities, fair value

0

1,469

Galileo Partners Fund [Member]

INVESTMENTS (Details) [Line Items]

Income (Loss) from Equity Method Investments

$ 1,700

Galileo Partners Fund [Member] | Minimum [Member]

INVESTMENTS (Details) [Line Items]

Equity Method Investment, Ownership Percentage

23.00%

Galileo Partners Fund [Member] | Maximum [Member]

INVESTMENTS (Details) [Line Items]

Equity Method Investment, Ownership Percentage

30.00%

Galileo Technology and Blockchain Fund [Member]

INVESTMENTS (Details) [Line Items]

Equity Method Investments

$ 283

Equity Method Investment, Aggregate Cost

$ 401

Equity Method Investment, Ownership Percentage

25.00%

Income (Loss) from Equity Method Investments

$ (99)

Fair Value Measured at Net Asset Value Per Share [Member] | Offshore Fund [Member]

INVESTMENTS (Details) [Line Items]

Debt Securities, Trading, and Equity Securities, FV-NI

$ 415

Impaired Securities [Member]

INVESTMENTS (Details) [Line Items]

Number of positions, subject to impairment loss

4

Available-for-Sale Securities, Combined Cost Basis of Impaired Securities

$ 627

Available-for-Sale Securities, Combined Fair Value of Impaired Securities

$ 216

Number of Impaired Securities Held at Cost

1

Cost Method Investments, Original Cost

$ 72

Cost Method Investments

$ 0

HIVE Blockchain Technologies Ltd. ("HIVE") [Member]

INVESTMENTS (Details) [Line Items]

Investment Owned, Balance, Shares (in Shares) | shares

10

Investment Owned, at Cost

$ 2,400

Investment Owned, Direct Percentage

3.20%

Investment Owned, Percentage

3.20%

HIVE Blockchain Technologies Ltd. ("HIVE") [Member] | Fair Value, Inputs, Level 1 [Member]

INVESTMENTS (Details) [Line Items]

Available-for-sale securities, fair value

$ 5,600

HIVE Blockchain Technologies Ltd. ("HIVE") [Member] | Galileo Partners Fund [Member]

INVESTMENTS (Details) [Line Items]

Equity Method Investment, Aggregate Cost

$ 500

[1]	Net unrealized gains (losses) on available-for-sale securities gross and net of tax as of June 30, 2018, are $3,138 and $2,089, respectively, and as of June 30, 2017, are $461 and $461, respectively.
[2]	Unrealized gains and losses on available-for-sale securities are excluded from earnings and recorded in other comprehensive income (loss) as a separate component of shareholders' equity until realized.
[3]	In accordance with Subtopic 820-10, certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the Consolidated Balance Sheets.
[4]	Unrealized and realized gains and losses on trading securities are included in earnings in the statement of operations.

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