SUBSEQUENT EVENTS (Details) (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended		1 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Oct. 31, 2011 Dividend declared
Subsequent event
Dividends declared per share (in dollars per share)	$ 0.22	$ 0.07	$ 0.60	$ 0.20	$ 0.22
Dividends declared					$ 34,606