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OTHER - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  | 9 Months Ended
--- | --- | --- | --- | --- | ---
Nov. 07, 2019 | Aug. 15, 2019 | May 15, 2019 | Feb. 15, 2019 | Sep. 30, 2019 | Sep. 30, 2018
Dividends Payable [Line Items] |  |  |  |  |  |
Dividends paid to shareholders |  |  |  |  | $ 2,693 | $ 2,405
Dividends payable |  |  |  |  | $ 900 |
Dividend per share (usd per share) |  |  |  |  | $ 0.1275 | $ 0.1275
Dividend Paid |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |
Dividends paid to shareholders |  | $ 900 | $ 900 | $ 900 |  |
Dividend Declared | Subsequent Event |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |
Dividend per share (usd per share) | $ 0.0425 |  |  |  |  |

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