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STOCKHOLDERS' EQUITY (Details) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended | 5 Months Ended | 12 Months Ended | 19 Months Ended | 102 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 31, 2021 $ / shares | Sep. 30, 2021 $ / shares | Jun. 30, 2021 USD ($) $ / shares shares | Jun. 30, 2021 USD ($) $ / shares shares | Jun. 30, 2020 USD ($) $ / shares shares | Jan. 31, 2021 $ / shares | Jun. 30, 2021 USD ($) shares | Jun. 30, 2019 shares
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |
Payments of Ordinary Dividends, Common Stock (in Dollars) | $ |  |  |  | $ 640 | $ 452 |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount (in Dollars) | $ |  |  | $ 2,500 | 2,500 |  |  | $ 2,500 |
Repurchasing Amount (in Dollars) | $ |  |  |  | 314 | $ 113 |  |  |
Monthly Dividends Paid [Member] |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |
Common Stock, Dividends, Per Share, Cash Paid (in Dollars per share) | $ / shares | $ 0.0025 |  | $ 0.005 |  |  | $ 0.0025 |  |
Share Repurchase Plan Renewal, December 2012 - December 2020 [Member] |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount (in Dollars) | $ |  |  | $ 2,750 | $ 2,750 |  |  | 2,750 |
Repurchasing Amount (in Dollars) | $ |  |  |  |  |  |  | $ 1,800 |
Number of shares repurchased |  |  |  |  |  |  | 719,682 |
Forecast [Member] | Monthly Dividend Authorized [Member] |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |
Monthly dividend (in Dollars per share) | $ / shares |  | $ 0.005 |  |  |  |  |  |
Common Class B [Member] |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |
Common Stock, Shares, Issued |  |  | 0 | 0 | 0 |  | 0 |
Common Class A [Member] |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |
Common Stock, Shares, Issued |  |  | 13,866,913 | 13,866,913 | 13,866,913 |  | 13,866,913 |
Payments of Ordinary Dividends, Common Stock (in Dollars) | $ |  |  |  | $ 552 | $ 390 |  |  |
Number of shares repurchased |  |  |  | 53,151 | 105,721 |  |  |
Repurchasing Amount (in Dollars) | $ |  |  |  | $ 314 | $ 113 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number |  |  | 233,000 | 233,000 |  |  | 233,000 |
Common Class A [Member] | Certain Employees [Member] |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |
Class A common stock granted |  |  |  | 4,000 | 0 |  |  |
Class A common stock granted (in Dollars per share) | $ / shares |  |  |  | $ 2.5 |  |  |  |
Common Class A [Member] | Director [Member] |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |
Class A common stock granted |  |  |  | 3,300 | 3,600 |  |  |
Class A common stock granted (in Dollars per share) | $ / shares |  |  |  | $ 2.68 | $ 1.61 |  |  |
Common Class A [Member] | Key Advisor [Member] |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |
Class A common stock granted |  |  |  | 0 | 50,000 |  |  |
Class A common stock granted (in Dollars per share) | $ / shares |  |  |  |  | $ 1.95 |  |  |
Common Class C [Member] |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |
Common Stock, Shares, Issued |  |  | 2,068,635 | 2,068,635 | 2,068,635 |  | 2,068,635 |
Payments of Ordinary Dividends, Common Stock (in Dollars) | $ |  |  |  | $ 88 | $ 62 |  |  |
Number of shares converted |  |  |  | 0 | (162) |  |  |
Conversion ratio, shares issued as a result of stock conversion |  |  |  | 1 | 1 |  |  |
1989 Plan [Member] |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |
Number of options granted |  |  |  | 231,000,000 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number |  |  | 231,000,000 | 231,000,000 | 0 |  | 231,000,000 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period |  |  |  | 0 |  |  |  |
1989 Plan [Member] | Common Class A [Member] |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |
Number of shares authorized under Stock Option Plan |  |  | 1,600,000 | 1,600,000 |  |  | 1,600,000 |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights |  |  |  | six months from the grant date or 20 percent on the first, second, third, fourth, and fifth anniversaries of the grant date |  |  |  |
Annual award vesting, percentage |  |  |  | 20.00% |  |  |  |
Stock Option Plan expiration |  |  |  | 10 years |  |  |  |
Number of options granted |  |  |  | 231,000 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share) | $ / shares |  |  |  | $ 3.36 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  |  | 6 months |  |  |  |
Share-based Payment Arrangement, Expense (in Dollars) | $ |  |  |  | $ 43 |  |  |  |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost (in Dollars) | $ |  |  | $ 9 | 9 |  |  | $ 9 |
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount (in Dollars) | $ |  |  | $ 733 | $ 733 |  |  | $ 733 |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition |  |  |  | 5 months 19 days |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number |  |  | 231,000 | 231,000 | 0 |  | 231,000 |
1997 Plan [Member] |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |
Number of options granted |  |  |  | 0 | 0 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number |  |  | 2,000 | 2,000 | 2,000 |  | 2,000 | 4,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period |  |  |  | 0 | 0 |  |  |
1997 Plan [Member] | Common Class A [Member] |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |
Number of shares authorized under Stock Option Plan |  |  | 400,000 | 400,000 |  |  | 400,000 |
Stock Option Plan expiration |  |  |  | 10 years |  |  |  |
Number of options granted |  |  |  | 0 | 0 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number |  |  | 2,000 | 2,000 | 2,000 |  | 2,000 |
Number of options, options forfeited |  |  |  | 0 | 2,000 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period |  |  |  | 0 | 0 |  |  |
Treasury Stock [Member] |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |
Common Stock, Shares, Issued |  |  | 898,953 | 898,953 | 855,432 |  | 898,953 | 804,959
Number of shares repurchased |  |  |  | 53,151 |  |  |  |
Treasury Stock [Member] | Common Class A [Member] |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |
Number of shares repurchased |  |  |  |  | 105,721 |  |  |
Treasury Stock [Member] | Common Class A [Member] | Employee and Director [Member] |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |
Adjustment to additional paid in capital from shares issued with a weighted average cost basis greater than the current fair value (in Dollars) | $ |  |  |  | $ 11 |  |  |  |
Treasury Stock [Member] | Common Class A [Member] | Employee, Director, and Key Advisor [Member] |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |
Adjustment to additional paid in capital from shares issued with a weighted average cost basis greater than the current fair value (in Dollars) | $ |  |  |  |  | $ (17) |  |  |

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