SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3) (USD $)	0 Months Ended	3 Months Ended				12 Months Ended
	Dec. 31, 2012	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012	Dec. 31, 2011
Goodwill
Impairment loss	$ 37,431,000					$ 37,431,000	$ 1,861,000
Goodwill impairment			82,524,000	63,948,000	0	82,524,000	63,948,000
Non-cash impairment charge of intangible assets	$ 135,480,000	$ 135,480,000				$ 135,480,000