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INVESTMENTS (Details) - Components of Company's Trading and Available-for-Sale Investments - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Sep. 30, 2018 | Jun. 30, 2018
Securities at fair value1 |  |  |
Securities, cost |  | $ 12,313 |
Securities, Unrealized Gains (Losses) |  | 2,002 |
Securities, Fair Value |  | 14,315 |
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] | 2,554 |
Securities, Unrealized Gains (Losses) | [2] | 2,151 |
Securities, Fair Value | [2] | 4,705 |
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) |  | 5 |
Securities, Fair Value |  | 8,790 |
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) |  | (109) |
Securities, Fair Value |  | $ 820 |
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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