INCOME TAXES (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Provision (benefit) for income taxes
Income tax expense	$ (1,744,000)	$ (11,338,000)
Net deferred tax liabilities	$ 261,200,000		$ 257,000,000