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STOCKHOLDERS' EQUITY (Details) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 $ / shares | Dec. 31, 2017 USD ($) Vote $ / shares | Dec. 31, 2016 USD ($) $ / shares | Dec. 31, 2015 USD ($) $ / shares
Common Stock [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Common stock dividend paid in cash (in dollars per share) | $ / shares | $ 1.00 |  |  |
Aggregate dividends paid on common Stock | $ |  | $ 10,473 | $ 27,674 | $ 7,358
Class A Common Stock [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Preferential dividend rate of common stock of dividends paid |  | 105.00% |  |
Percentage of number of directors elected under stock voting right |  | 75.00% |  |
Number of votes per share | Vote |  | 10 |  |
Conversion basis |  | 1-for-1 basis |  |
Common stock dividend paid in cash (in dollars per share) | $ / shares | $ 0.95 | $ 0.51 | $ 1.365 | $ 0.34
Aggregate dividends paid on common Stock | $ |  | $ 919 | $ 2,735 | $ 702

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- Definition Describe the conversion features of common stock if such stock is convertible. That is, shares of common stock into which another convertible security was converted, or shares of common stock into which another class of common stock was converted. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21506-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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