EQUITY INVESTMENTS (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
EQUITY INVESTMENTS
Investee income statement data represented in summarized information (as a percent)			100.00%
Revenue	$ 22,218	$ 21,233	$ 58,534	$ 55,215
Costs and expenses	(15,563)	(16,549)	(34,776)	(34,161)
Non-operating expense	(3,145)	(1,061)	(9,265)	(7,182)
Net income	$ 3,510	$ 3,623	$ 14,493	$ 13,872