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INVESTMENTS (Details) - Components of Company's Trading and Available-for-Sale Investments - USD ($)
$ in Thousands

Dec. 31, 2018

Jun. 30, 2018

Securities at fair value1

Securities, cost

$ 13,812

Securities, Unrealized Gains (Losses)

(1,422)

Securities, Fair Value

12,390

Trading securities1

Trading securities, cost

$ 8,365

Trading securities, Fair Value

8,179

Trading securities, Unrealized Gains

22

Trading securities, Unrealized (Losses)

(208)

Available-for-sale securities2

Available-for-sale securities, cost

^[1]

3,948

Available-for-sale securities, Fair Value

^[1]

7,086

Available-for-sale securities, Unrealized Gains

^[1]

3,241

Available-for-sale securities, Unrealized (Losses)

^[1]

(103)

Total Securities, cost

12,313

Total Securities, Fair Value

15,265

Total Securities, Unrealized Gains

3,263

Total Securities, Unrealized (Losses)

(311)

Common Stock - International [Member]

Securities at fair value1

Securities, cost

^[2]

4,053

Securities, Unrealized Gains (Losses)

^[2]

(1,127)

Securities, Fair Value

^[2]

2,926

Available-for-sale securities2

Available-for-sale securities, cost

^[3]

2,554

Available-for-sale securities, Fair Value

^[3]

5,673

Available-for-sale securities, Unrealized Gains

^[3]

3,213

Available-for-sale securities, Unrealized (Losses)

^[3]

(94)

Common Stock - Domestic [Member]

Securities at fair value1

Securities, cost

45

Securities, Unrealized Gains (Losses)

(45)

Securities, Fair Value

0

Fixed Income Securities [Member]

Securities at fair value1

Securities, cost

8,785

Securities, Unrealized Gains (Losses)

13

Securities, Fair Value

8,798

Trading securities1

Trading securities, cost

^[2]

7,785

Trading securities, Fair Value

^[2]

7,807

Trading securities, Unrealized Gains

^[2]

22

Trading securities, Unrealized (Losses)

^[2]

0

Available-for-sale securities2

Available-for-sale securities, cost

^[3]

1,000

Available-for-sale securities, Fair Value

^[3]

991

Available-for-sale securities, Unrealized Gains

^[3]

0

Available-for-sale securities, Unrealized (Losses)

^[3]

(9)

Mutual Funds, Domestic Equity [Member]

Securities at fair value1

Securities, cost

929

Securities, Unrealized Gains (Losses)

(263)

Securities, Fair Value

$ 666

Trading securities1

Trading securities, cost

535

Trading securities, Fair Value

372

Trading securities, Unrealized Gains

0

Trading securities, Unrealized (Losses)

(163)

Available-for-sale securities2

Available-for-sale securities, cost

^[3]

394

Available-for-sale securities, Fair Value

^[3]

422

Available-for-sale securities, Unrealized Gains

^[3]

28

Available-for-sale securities, Unrealized (Losses)

^[3]

0

Other Securities [Member]

Trading securities1

Trading securities, cost

^[2]

45

Trading securities, Fair Value

^[2]

0

Trading securities, Unrealized Gains

^[2]

0

Trading securities, Unrealized (Losses)

^[2]

$ (45)

[1]	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.
[2]	Prior to July 1, 2018, changes in unrealized and realized gains and losses on trading securities were included in earnings in the statement of operations.
[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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