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