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COMMON STOCK (Details) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 USD ($) Shareholder $ / shares | Dec. 31, 2017 USD ($) $ / shares
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |
Number of days from trigger date to purchase Class B common shares | 90 days |
Percentage of common stock held by shareholder one | 23.60% |
Common stock dividends declared | $ | $ 3.3 | $ 3.3
Minimum [Member] |  |
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |
Percentage of outstanding common stock held by shareholders | 10.00% |
Threshold to be met to trigger the Class B protection clause | 10.00% |
Maximum [Member] |  |
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |
Percentage shareholding of class B considered as per class B Protection clause | 10.00% |
Class A [Member] |  |
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |
Number of shareholders with ownership in excess of ten percent | Shareholder | 1 |
Common stock dividends declared each quarter (in dollars per share) | $ 0.06 | $ 0.06
Class B [Member] |  |
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |
Common stock dividends declared each quarter (in dollars per share) | $ 0.07 | $ 0.07

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