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COMMON STOCK (Details) $ / shares in Units, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 USD ($) $ / shares shares | Dec. 31, 2014 USD ($) Shareholder $ / shares shares | Dec. 31, 2013 USD ($) $ / shares shares | Dec. 31, 2012 USD ($)
Class of Stock [Line Items] |  |  |  |
Cost of common stock purchased and retired |  |  | $ 3,356 |
Minimum percentage of outstanding common stock held by two shareholders |  | 10.00% |  |
Minimum percentage of common stock needs to held by shareholders having more than ten percent of Class A common stock as per class B Protection clause |  | 10.00% |  |
Number of days from trigger date to purchase Class B common shares |  | 90 days |  |
Percentage of common stock held by shareholder one | 23.10% |  |  |
Percentage shareholding of class B considered as per class B Protection clause | below 10% |  |  |
Common stock dividends declared | $ 3,200 | $ 3,200 | $ 3,100 |
Class A [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Common stock repurchased during the period (in shares) | shares | 0 | 0 |  |
Number of shareholders with ownership in excess of ten percent | Shareholder |  | 1 |  |
Common stock dividends declared each quarter (in dollars per share) | $ / shares | $ 0.06 | $ 0.06 | $ 0.06 |
Class B [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Authorized amount of repurchase of outstanding Class B common shares |  |  |  | $ 10,000
Common stock purchased and retired (in shares) | shares |  |  | 547,366 |
Cost of common stock purchased and retired |  |  | $ 10,000 |
Common stock repurchased during the period (in shares) | shares | 0 | 0 |  |
Common stock dividends declared each quarter (in dollars per share) | $ / shares | $ 0.07 | $ 0.07 | $ 0.07 |

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