COMMITMENTS, CONTINGENCIES AND LITIGATION -Capital Leases (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Commitments and Contingencies Disclosure [Abstract]
2013	$ 8,710
2014	8,933
2015	9,366
2016	8,357
2017	7,870
Thereafter	26,597
Remaining capital lease payments	69,833
Less: amounts representing imputed interest	(21,275)
Present value of minimum lease payments	48,558
Less: current portion	(4,504)
Capital lease obligations	$ 44,054	$ 38,923

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.

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