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STOCKHOLDERS' EQUITY (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2016
Vote
$ / shares
Dec. 31, 2014
$ / shares
Dec. 31, 2016
USD ($)
Vote
$ / shares
Dec. 31, 2015
USD ($)
$ / shares
Dec. 31, 2014
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 | $     $ 26,674 $ 7,358 $ 27,077
Class A Common Stock [Member]          
Class of Stock [Line Items]          
Preferential dividend rate of common stock of dividends paid 105.00%   105.00%    
Percentage of number of directors elected under stock voting right     75.00%    
Number of votes per share | Vote 10   10    
Conversion basis     1-for-1 basis    
Common stock dividend paid in cash (in dollars per share) | $ / shares   $ 0.95 $ 1.365 $ 0.34 $ 1.25
Aggregate dividends paid on common Stock | $     $ 2,735 $ 702 $ 2,703