FAIR VALUE (FAIR VALUE ASSETS AND LIABILITIES) (DETAILS) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Money market investments	$ 350	$ 507
Derivative assets, net	15,088
Total assets	15,438	507
Liabilities [Abstract]
Deferred compensation plan liability	5,305	3,990
Derivative instruments, net		9,762
Total liabilities	(5,305)	(13,752)
Significant Unobservable Inputs (Level 3) [Member]
Liabilities [Abstract]
Purchase price payable	12,533	4,985
Total liabilities	$ (12,533)	$ (4,985)