FAIR VALUE (FAIR VALUE ASSETS AND LIABILITIES) (DETAILS) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets [Abstract]
Money market investments	$ 0	$ 0
Derivative assets, net	0	0
Total assets	0	0
Liabilities [Abstract]
Deferred compensation plan liability	0	0
Derivative instruments, net	0	0
Purchase price payable	0	0
Total liabilities	0	0
Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Money market investments	400	507
Derivative assets, net	5,589	0
Total assets	5,989	507
Liabilities [Abstract]
Deferred compensation plan liability	(4,808)	(3,990)
Derivative instruments, net	0	(9,762)
Purchase price payable	0	0
Total liabilities	(4,808)	(13,752)
Significant Unobservable Inputs (Level 3) [Member]
Assets [Abstract]
Money market investments	0	0
Derivative assets, net	0	0
Total assets	0	0
Liabilities [Abstract]
Deferred compensation plan liability	0	0
Derivative instruments, net	0	0
Purchase price payable	(3,234)	(4,985)
Total liabilities	$ (3,234)	$ (4,985)