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STOCKHOLDERS' EQUITY (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Sep. 30, 2017 | Jun. 30, 2018 | Dec. 05, 2017 | Dec. 06, 2016 | Dec. 09, 2015 | Dec. 10, 2014 | Dec. 12, 2013 | Dec. 07, 2012
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |
Repurchasing Amount |  | $ 2 | $ 14 |  |  |  |  |  |  |
Options outstanding (in Shares) |  | 4,000 |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number (in Shares) |  | 4,000 |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price (in Dollars per share) |  | $ 7.53 |  |  |  |  |  |  |  |
Number of options exercised (in Shares) |  | 0 | 0 |  |  |  |  |  |  |
Number of options forfeited (in Shares) |  | 0 | 0 |  |  |  |  |  |  |
Number of options granted (in Shares) |  | 0 | 0 |  |  |  |  |  |  |
Share-based Compensation |  | $ 2 | $ 0 |  |  |  |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options |  | $ 0 | $ 0 |  |  |  |  |  |  |
Monthly Dividends Paid [Member] |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |
Common Stock, Dividends, Per Share, Cash Paid (in Dollars per share) |  | $ 0.0025 |  | $ 0.0025 |  |  |  |  |  |
Scenario, Forecast [Member] | Monthly Dividend Authorized [Member] |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |
Monthly Dividend Declared (in Dollars per share) | $ 0.0025 |  |  |  |  |  |  |  |  |
Common Class A [Member] |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |
Number of shares repurchased (in Shares) |  | 1,000 | 9,199 |  |  |  |  |  |  |
Repurchasing Amount |  | $ 2 | $ 14 |  |  |  |  |  |  |
Share Repurchase Renewal, December 2014 [Member] |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount |  |  |  |  |  |  |  | $ 2,750 |  |
Share Repurchase Renewal, December 2015 [Member] |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount |  |  |  |  |  |  | $ 2,750 |  |  |
Share Repurchase Renewal, December 2017 [Member] |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount |  |  |  |  | $ 2,750 |  |  |  |  |
Share Repurchase Renewal, December 2016 [Member] |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount |  |  |  |  |  | $ 2,750 |  |  |  |
Share Repurchase Renewal, December 2013 [Member] |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount |  |  |  |  |  |  |  |  | $ 2,750 |
Share Repurchase Plan - December 2012 [Member] |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY (Details) [Line Items] |  |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount |  |  |  |  |  |  |  |  |  | $ 2,750

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