ACCRUED LIABILITIES (Details) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Payables and Accruals [Abstract]
Insurance dispute reserve	$ 30,000,000	$ 9,729,000
Compensation	13,523,000	17,031,000
Indemnification expenses	4,540,000	2,799,000
Other	11,161,000	12,115,000
Accrual and estimate of the reasonably possible loss	0
Accrued liabilities	$ 59,224,000	$ 41,674,000