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STOCKHOLDERS' EQUITY (Details) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended | 15 Months Ended | 21 Months Ended | 54 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2017 $ / shares | Jun. 30, 2017 USD ($) $ / shares shares | Jun. 30, 2016 USD ($) $ / shares shares | Jun. 30, 2015 USD ($) $ / shares shares | Sep. 30, 2015 $ / shares | Jun. 30, 2017 USD ($) $ / shares shares | Jun. 30, 2017 USD ($) $ / shares shares | Dec. 06, 2016 USD ($) | Dec. 09, 2015 USD ($) | Dec. 10, 2014 USD ($) | Jun. 30, 2014 shares | Dec. 12, 2013 USD ($) | Dec. 07, 2012 USD ($)
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchasing Amount (in Dollars) | $ |  | $ 114 | $ 313 | $ 292 |  |  |  |  |  |  |  |  |
Number of options granted |  | 0 | 0 | 0 |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number |  | 2,000 | 2,000 | 22,000 |  | 2,000 | 2,000 |  |  |  | 22,000 |  |
Options exercisable |  | 2,000 |  |  |  | 2,000 | 2,000 |  |  |  |  |  |
Weighted average exercise price, exercisable options (in Dollars per share) | $ / shares |  | $ 12.31 |  |  |  | $ 12.31 | $ 12.31 |  |  |  |  |  |
Common Class A [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends, Cash (in Dollars) | $ |  | $ 394 | $ 496 | $ 800 |  |  |  |  |  |  |  |  |
Number of shares repurchased |  | 69,636 | 177,998 | 95,251 |  |  |  |  |  |  |  |  |
Repurchasing Amount (in Dollars) | $ |  | $ 114 | $ 313 | $ 292 |  |  |  |  |  |  |  |  |
Common Class A [Member] | 1989 Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares authorized under Stock Option Plan |  | 1,600,000 |  |  |  | 1,600,000 | 1,600,000 |  |  |  |  |  |
Award vesting period |  | 6 months |  |  |  |  |  |  |  |  |  |  |
Annual award vesting, percentage |  | 20.00% |  |  |  |  |  |  |  |  |  |  |
Stock Option Plan expiration |  | 10 years |  |  |  |  |  |  |  |  |  |  |
Common Class A [Member] | 1997 Plan [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 | 0 |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number |  | 2,000 |  |  |  | 2,000 | 2,000 |  |  |  |  |  |
Common Class C [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends, Cash (in Dollars) | $ |  | $ 62 | $ 78 | $ 124 |  |  |  |  |  |  |  |  |
Number of shares converted |  | 180 | 0 | 60 |  |  |  |  |  |  |  |  |
Conversion ratio, shares issued as a result of stock conversion |  | 1 |  |  |  |  |  |  |  |  |  |  |
Share Repurchase Renewal, December 2013 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount (in Dollars) | $ |  |  |  |  |  |  |  |  |  |  |  | $ 2,750 |
Share Repurchase Plan - December 2012 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount (in Dollars) | $ |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,750
Share Repurchase Renewal, December 2014 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount (in Dollars) | $ |  |  |  |  |  |  |  |  |  | $ 2,750 |  |  |
Share Repurchase Renewal, December 2015 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount (in Dollars) | $ |  |  |  |  |  |  |  |  | $ 2,750 |  |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount (in Dollars) | $ |  | $ 2,720 |  |  |  | $ 2,720 | $ 2,720 |  |  |  |  |  |
Share Repurchase Renewal, December 2016 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount (in Dollars) | $ |  |  |  |  |  |  |  | $ 2,750 |  |  |  |  |
Share Repurchase Plan, December 2012 and Renewal, December 2013, December 2014, December 2015 and December 2016 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchasing Amount (in Dollars) | $ |  |  |  |  |  |  | $ 1,181 |  |  |  |  |  |
Number of shares repurchased |  |  |  |  |  |  | 491,288 |  |  |  |  |  |
Employee [Member] | Common Class A [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Class A common stock granted |  |  | 2,400 |  |  |  |  |  |  |  |  |  |
Class A common stock granted (in Dollars per share) | $ / shares |  |  | $ 2.66 |  |  |  |  |  |  |  |  |  |
Director [Member] | Common Class A [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Class A common stock granted |  | 3,600 | 3,600 | 3,600 |  |  |  |  |  |  |  |  |
Class A common stock granted (in Dollars per share) | $ / shares |  | $ 1.66 | $ 1.63 | $ 3.24 |  |  |  |  |  |  |  |  |
Employee and Director [Member] | Common Class A [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) | $ |  | $ (5) | $ (43) |  |  |  |  |  |  |  |  |  |
Employees [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Options exercisable |  | 2,000 | 2,000 | 22,000 |  | 2,000 | 2,000 |  |  |  |  |  |
Weighted average exercise price, exercisable options (in Dollars per share) | $ / shares |  | $ 12.31 | $ 12.31 | $ 18.72 |  | $ 12.31 | $ 12.31 |  |  |  |  |  |
Monthly Dividends Paid [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, Dividends, Per Share, Cash Paid (in Dollars per share) | $ / shares |  |  |  |  | $ 0.005 | $ 0.0025 |  |  |  |  |  |  |
Monthly Dividend Authorized [Member] | Scenario, Forecast [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Monthly dividend (in Dollars per share) | $ / shares | $ 0.0025 |  |  |  |  |  |  |  |  |  |  |  |

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- Details
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Namespace Prefix: |
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